Added breaking animation to all breakable blocks.

Smart preview: only blocks that can be (re)placed show a preview.
Smart outline when breaking: only blocks that can be broken by the current tool get an outline.
Improved occlusion by render further block previews first.
Reversed order of mirror and array to mirror arrays (for roofs etc).

build.gradle

@@ -11,7 +11,7 @@ apply plugin: 'net.minecraftforge.gradle.forge'
 //Only edit below this line, the above code adds and enables the necessary things for Forge to be setup.
 
 
-version = "0.1.1"
+version = "0.5"
 group = "nl.requios.effortlessbuilding" // http://maven.apache.org/guides/mini/guide-naming-conventions.html
 archivesBaseName = "effortlessbuilding"
 

src/main/java/nl/requios/effortlessbuilding/Array.java

@@ -1,21 +1,32 @@
 package nl.requios.effortlessbuilding;
 
+import net.minecraft.block.Block;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.math.Vec3i;
-import net.minecraftforge.common.util.BlockSnapshot;
+import net.minecraft.world.World;
+import net.minecraftforge.event.entity.player.PlayerEvent;
 import net.minecraftforge.event.world.BlockEvent;
+import net.minecraftforge.items.IItemHandler;
+import nl.requios.effortlessbuilding.helper.SurvivalHelper;
+import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
+
+import java.util.ArrayList;
+import java.util.List;
 
 public class Array {
-    //TODO config file
-    public static final int MAX_COUNT = 100;
 
     public static class ArraySettings{
         public boolean enabled = false;
         public BlockPos offset = BlockPos.ORIGIN;
         public int count = 5;
 
-        public ArraySettings(){
+        public ArraySettings() {
         }
 
         public ArraySettings(boolean enabled, BlockPos offset, int count) {
@@ -23,60 +34,75 @@ public class Array {
             this.offset = offset;
             this.count = count;
         }
-    }
 
-    //Called from EventHandler
-    public static void onBlockPlaced(BlockEvent.PlaceEvent event) {
-        if (event.getWorld().isRemote) return;
+        public int getReach() {
+            //find largest offset
+            int x = Math.abs(offset.getX());
+            int y = Math.abs(offset.getY());
+            int z = Math.abs(offset.getZ());
+            int largestOffset = Math.max(Math.max(x, y), z);
 
-        //find arraysettings for the player that placed the block
-        ArraySettings a = BuildSettingsManager.getBuildSettings(event.getPlayer()).getArraySettings();
-        if (a == null || !a.enabled) return;
-
-        if (a.offset.getX() == 0 && a.offset.getY() == 0 && a.offset.getZ() == 0) return;
-
-        BlockPos pos = event.getPos();
-        Vec3i offset = new Vec3i(a.offset.getX(), a.offset.getY(), a.offset.getZ());
-        for (int i = 0; i < a.count; i++) {
-            pos = pos.add(offset);
-            if (event.getWorld().isBlockLoaded(pos, true)) {
-                event.getWorld().setBlockState(pos, event.getPlacedBlock());
-
-                //Mirror synergy
-                BlockSnapshot blockSnapshot = new BlockSnapshot(event.getWorld(), pos, event.getPlacedBlock());
-                BlockEvent.PlaceEvent placeEvent = new BlockEvent.PlaceEvent(blockSnapshot, event.getPlacedBlock(), event.getPlayer(), EnumHand.MAIN_HAND);
-                Mirror.onBlockPlaced(placeEvent);
-            }
+            return largestOffset * count;
         }
     }
 
-    //Called from EventHandler
-    public static void onBlockBroken(BlockEvent.BreakEvent event) {
-        if (event.getWorld().isRemote) return;
+    public static List<BlockPos> findCoordinates(EntityPlayer player, BlockPos startPos) {
+        List<BlockPos> coordinates = new ArrayList<>();
 
-        //find arraysettings for the player that placed the block
-        ArraySettings a = BuildSettingsManager.getBuildSettings(event.getPlayer()).getArraySettings();
-        if (a == null || !a.enabled) return;
+        //find arraysettings for the player
+        ArraySettings a = BuildSettingsManager.getBuildSettings(player).getArraySettings();
+        if (!isEnabled(a)) return coordinates;
 
-        if (a.offset.getX() == 0 && a.offset.getY() == 0 && a.offset.getZ() == 0) return;
-
-        BlockPos pos = event.getPos();
+        BlockPos pos = startPos;
         Vec3i offset = new Vec3i(a.offset.getX(), a.offset.getY(), a.offset.getZ());
+
         for (int i = 0; i < a.count; i++) {
             pos = pos.add(offset);
-            if (event.getWorld().isBlockLoaded(pos, false)) {
-                event.getWorld().setBlockToAir(pos);
-
-                //Mirror synergy
-                BlockEvent.BreakEvent breakEvent = new BlockEvent.BreakEvent(event.getWorld(), pos, event.getState(), event.getPlayer());
-                Mirror.onBlockBroken(breakEvent);
-            }
+            coordinates.add(pos);
         }
+
+        return coordinates;
+    }
+
+    public static List<IBlockState> findBlockStates(EntityPlayer player, BlockPos startPos, IBlockState blockState, ItemStack itemStack, List<ItemStack> itemStacks) {
+        List<IBlockState> blockStates = new ArrayList<>();
+
+        //find arraysettings for the player that placed the block
+        ArraySettings a = BuildSettingsManager.getBuildSettings(player).getArraySettings();
+        if (!isEnabled(a)) return blockStates;
+
+        BlockPos pos = startPos;
+        Vec3i offset = new Vec3i(a.offset.getX(), a.offset.getY(), a.offset.getZ());
+
+        //Randomizer bag synergy
+        IItemHandler bagInventory = null;
+        if (!itemStack.isEmpty() && itemStack.getItem() instanceof ItemRandomizerBag) {
+            bagInventory = ItemRandomizerBag.getBagInventory(itemStack);
+        }
+
+        for (int i = 0; i < a.count; i++) {
+            pos = pos.add(offset);
+
+            //Randomizer bag synergy
+            if (bagInventory != null) {
+                itemStack = ItemRandomizerBag.pickRandomStack(bagInventory);
+                blockState = BuildModifiers.getBlockStateFromItem(itemStack, player, startPos, EnumFacing.UP, new Vec3d(0, 0, 0), EnumHand.MAIN_HAND);
+            }
+
+            //blockState = blockState.getBlock().getStateForPlacement(player.world, pos, )
+            blockStates.add(blockState);
+            itemStacks.add(itemStack);
+        }
+
+        return blockStates;
+    }
+
+    public static boolean isEnabled(ArraySettings a) {
+        if (a == null || !a.enabled) return false;
+
+        if (a.offset.getX() == 0 && a.offset.getY() == 0 && a.offset.getZ() == 0) return false;
+
+        return true;
     }
 
-//    @SubscribeEvent
-//    @SideOnly(Side.CLIENT)
-//    public static void onRender(RenderWorldLastEvent event) {
-//
-//    }
 }

src/main/java/nl/requios/effortlessbuilding/BuildConfig.java

@@ -0,0 +1,54 @@
+package nl.requios.effortlessbuilding;
+
+import net.minecraftforge.common.config.Config;
+
+import static net.minecraftforge.common.config.Config.*;
+
+@Config(modid = EffortlessBuilding.MODID, name = "EffortlessBuilding", type = Type.INSTANCE, category = "")
+public class BuildConfig {
+
+    public static Reach reach = new Reach();
+    public static SurvivalBalancers survivalBalancers = new SurvivalBalancers();
+    public static Visuals visuals = new Visuals();
+
+    public static class Reach {
+        @Comment({"Reach: how far away the player can place blocks using mirror/array etc.",
+                 "Maximum reach in creative"})
+        public int maxReachCreative = 200;
+
+        @Comment({"Maximum reach in survival without upgrades",
+                 "Reach upgrades are craftable consumables that permanently increase reach.",
+                 "Set to 0 to disable Effortless Building until the player has consumed a reach upgrade."})
+        public int maxReachLevel0 = 20;
+
+        @Comment("Maximum reach in survival with one upgrade")
+        public int maxReachLevel1 = 50;
+
+        @Comment("Maximum reach in survival with two upgrades")
+        public int maxReachLevel2 = 100;
+
+        @Comment("Maximum reach in survival with three upgrades")
+        public int maxReachLevel3 = 200;
+    }
+
+    public static class SurvivalBalancers {
+
+        @Comment({"Increases the time to mine a block when breaking multiple at once.",
+                 "Mining time depends on how many blocks, what type of blocks, and the percentage below.",
+                 "Example: breaking 1 dirt + 1 obsidian takes the time of breaking 1 dirt + 1 obsidian."})
+        public boolean increasedMiningTime = true;
+
+        @Comment({"How much the mining time of each additional block counts towards an increased mining time.",
+                 "A percentage between 0% and 100%, where 0% is the same as disabling it,",
+                 "and 100% takes as much time as breaking each block individually.",
+                 "The block in front of you always counts as 100%."})
+        @RangeInt(min = 0, max = 100)
+        public int miningTimePercentage = 50;
+    }
+
+    public static class Visuals {
+        @Comment({"Show a block preview if you have a block in hand,",
+                 "even when mirror and array are off."})
+        public boolean alwaysShowBlockPreview = false;
+    }
+}

src/main/java/nl/requios/effortlessbuilding/BuildModifiers.java

@@ -0,0 +1,185 @@
+package nl.requios.effortlessbuilding;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.ItemBlock;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.EnumHand;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.RayTraceResult;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.World;
+import net.minecraftforge.event.world.BlockEvent;
+import net.minecraftforge.fml.common.gameevent.TickEvent;
+import nl.requios.effortlessbuilding.helper.SurvivalHelper;
+import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
+import nl.requios.effortlessbuilding.network.BlockPlacedMessage;
+
+import java.util.*;
+
+public class BuildModifiers {
+
+    //Uses a network message to get the previous raytraceresult from the player
+    //The server could keep track of all raytraceresults but this might lag with many players
+    //Raytraceresult is needed for sideHit and hitVec
+    public static void onBlockPlacedMessage(EntityPlayer player, BlockPlacedMessage message) {
+        if (!message.isBlockHit() || message.getBlockPos() == null) return;
+
+        World world = player.world;
+        ItemRandomizerBag.renewRandomness();
+
+        BlockPos startPos = message.getBlockPos();
+
+        //Offset in direction of sidehit if not quickreplace and not replaceable
+        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(player);
+        boolean replaceable = world.getBlockState(startPos).getBlock().isReplaceable(player.world, startPos);
+        if (!buildSettings.doQuickReplace() && !replaceable) {
+            startPos = startPos.offset(message.getSideHit());
+        }
+
+        //Get under tall grass and other replaceable blocks
+        if (buildSettings.doQuickReplace() && replaceable) {
+            startPos = startPos.down();
+        }
+
+        //Format hitvec to 0.x
+        Vec3d hitVec = message.getHitVec();
+        hitVec = new Vec3d(Math.abs(hitVec.x - ((int) hitVec.x)), Math.abs(hitVec.y - ((int) hitVec.y)), Math.abs(hitVec.z - ((int) hitVec.z)));
+
+        //find coordinates and blockstates
+        List<BlockPos> coordinates = findCoordinates(player, startPos);
+        List<ItemStack> itemStacks = new ArrayList<>();
+        List<IBlockState> blockStates = findBlockStates(player, startPos, hitVec, message.getSideHit(), itemStacks);
+
+        //check if valid blockstates
+        if (blockStates.size() == 0 || coordinates.size() != blockStates.size()) return;
+
+        //place blocks
+        for (int i = 0; i < coordinates.size(); i++) {
+            BlockPos blockPos = coordinates.get(i);
+            IBlockState blockState = blockStates.get(i);
+            ItemStack itemStack = itemStacks.get(i);
+
+            if (world.isBlockLoaded(blockPos, true)) {
+                //check itemstack empty
+                if (itemStack.isEmpty()) continue;
+                SurvivalHelper.placeBlock(world, player, blockPos, blockState, itemStack, EnumFacing.UP, true, false);
+            }
+        }
+    }
+
+    public static void onBlockPlaced(BlockEvent.PlaceEvent event) {
+        if (event.getWorld().isRemote) return;
+
+        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(event.getPlayer());
+        //Only use own place event if anything is enabled
+        if (isEnabled(buildSettings, event.getPos())) {
+            EffortlessBuilding.packetHandler.sendTo(new BlockPlacedMessage(), (EntityPlayerMP) event.getPlayer());
+            event.setCanceled(true);
+        }
+
+    }
+
+    public static void onBlockBroken(BlockEvent.BreakEvent event) {
+        if (event.getWorld().isRemote) return;
+
+        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(event.getPlayer());
+        //Only use own break event if anything is enabled
+        if (isEnabled(buildSettings, event.getPos())) {
+            //get coordinates
+            List<BlockPos> coordinates = findCoordinates(event.getPlayer(), event.getPos());
+
+            //break all those blocks
+            for (BlockPos coordinate : coordinates) {
+                if (event.getWorld().isBlockLoaded(coordinate, false)) {
+                    SurvivalHelper.breakBlock(event.getWorld(), event.getPlayer(), coordinate);
+                }
+            }
+        }
+    }
+
+    public static List<BlockPos> findCoordinates(EntityPlayer player, BlockPos startPos) {
+        List<BlockPos> coordinates = new ArrayList<>();
+        //Add current block being placed too
+        coordinates.add(startPos);
+
+        List<BlockPos> arrayCoordinates = Array.findCoordinates(player, startPos);
+        coordinates.addAll(arrayCoordinates);
+        coordinates.addAll(Mirror.findCoordinates(player, startPos));
+        //get array for each coordinate
+        for (BlockPos coordinate : arrayCoordinates) {
+            coordinates.addAll(Mirror.findCoordinates(player, coordinate));
+        }
+
+        return coordinates;
+    }
+
+    public static List<IBlockState> findBlockStates(EntityPlayer player, BlockPos startPos, Vec3d hitVec, EnumFacing facing, List<ItemStack> itemStacks) {
+        List<IBlockState> blockStates = new ArrayList<>();
+        itemStacks.clear();
+
+        //Get itemstack
+        ItemStack itemStack = player.getHeldItem(EnumHand.MAIN_HAND);
+        if (itemStack.isEmpty() || !(itemStack.getItem() instanceof ItemBlock || itemStack.getItem() instanceof ItemRandomizerBag)) {
+            itemStack = player.getHeldItem(EnumHand.OFF_HAND);
+        }
+        if (itemStack.isEmpty() || !(itemStack.getItem() instanceof ItemBlock || itemStack.getItem() instanceof ItemRandomizerBag)) {
+            return blockStates;
+        }
+
+        //Get ItemBlock stack
+        ItemStack itemBlock = ItemStack.EMPTY;
+        if (itemStack.getItem() instanceof ItemBlock) itemBlock = itemStack;
+        ItemRandomizerBag.resetRandomness();
+        if (itemStack.getItem() instanceof ItemRandomizerBag) itemBlock = ItemRandomizerBag.pickRandomStack(ItemRandomizerBag.getBagInventory(itemStack));
+
+        IBlockState blockState = getBlockStateFromItem(itemBlock, player, startPos, facing, hitVec, EnumHand.MAIN_HAND);
+        //Add current block being placed too
+        blockStates.add(blockState);
+        itemStacks.add(itemStack);
+
+        List<IBlockState> arrayBlockStates = Array.findBlockStates(player, startPos, blockState, itemStack, itemStacks);
+        blockStates.addAll(arrayBlockStates);
+        blockStates.addAll(Mirror.findBlockStates(player, startPos, blockState, itemStack, itemStacks));
+        //add array for each mirror coordinate
+        List<BlockPos> arrayCoordinates = Array.findCoordinates(player, startPos);
+        for (int i = 0; i < arrayCoordinates.size(); i++) {
+            BlockPos coordinate = arrayCoordinates.get(i);
+            IBlockState blockState1 = arrayBlockStates.get(i);
+            blockStates.addAll(Mirror.findBlockStates(player, coordinate, blockState1, itemStack, itemStacks));
+        }
+
+        //Adjust blockstates for torches and ladders etc to place on a valid side
+        //TODO optimize findCoordinates (done twice now)
+        //TODO fix mirror
+//        List<BlockPos> coordinates = findCoordinates(player, startPos);
+//        for (int i = 0; i < blockStates.size(); i++) {
+//            blockStates.set(i, blockStates.get(i).getBlock().getStateForPlacement(player.world, coordinates.get(i), facing,
+//                    (float) hitVec.x, (float) hitVec.y, (float) hitVec.z, itemStacks.get(i).getMetadata(), player, EnumHand.MAIN_HAND));
+//        }
+
+        return blockStates;
+    }
+
+    public static boolean isEnabled(BuildSettingsManager.BuildSettings buildSettings, BlockPos startPos) {
+        return Mirror.isEnabled(buildSettings.getMirrorSettings(), startPos) ||
+               Array.isEnabled(buildSettings.getArraySettings()) ||
+               buildSettings.doQuickReplace();
+    }
+
+    public static IBlockState getBlockStateFromItem(ItemStack itemStack, EntityPlayer player, BlockPos blockPos, EnumFacing facing, Vec3d hitVec, EnumHand hand) {
+        return Block.getBlockFromItem(itemStack.getItem()).getStateForPlacement(player.world, blockPos, facing,
+                ((float) hitVec.x), ((float) hitVec.y), ((float) hitVec.z), itemStack.getMetadata(), player, hand);
+    }
+
+    //Returns true if equal (or both null)
+    public static boolean compareCoordinates(List<BlockPos> coordinates1, List<BlockPos> coordinates2) {
+        if (coordinates1 == null && coordinates2 == null) return true;
+        if (coordinates1 == null || coordinates2 == null) return false;
+
+        return coordinates1.equals(coordinates2);
+    }
+}

src/main/java/nl/requios/effortlessbuilding/BuildSettingsManager.java

@@ -5,48 +5,108 @@ import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.PlayerEvent;
-import nl.requios.effortlessbuilding.capability.BuildModifierCapability;
+import nl.requios.effortlessbuilding.capability.BuildModifierCapabilityManager;
 import nl.requios.effortlessbuilding.network.BuildSettingsMessage;
 
 @Mod.EventBusSubscriber
 public class BuildSettingsManager {
 
+    //Retrieves the buildsettings of a player through the buildModifierCapability capability
+    //Never returns null
     public static BuildSettings getBuildSettings(EntityPlayer player){
-        if (player.hasCapability(BuildModifierCapability.buildModifier, null)) {
-            BuildModifierCapability.IBuildModifier capability = player.getCapability(BuildModifierCapability.buildModifier, null);
+        if (player.hasCapability(BuildModifierCapabilityManager.buildModifierCapability, null)) {
+            BuildModifierCapabilityManager.IBuildModifierCapability capability = player.getCapability(
+                    BuildModifierCapabilityManager.buildModifierCapability, null);
+            if (capability.getBuildModifierData() == null) {
+                capability.setBuildModifierData(new BuildSettings());
+            }
             return capability.getBuildModifierData();
         }
-        EffortlessBuilding.log("buildsettings is null");
-        return null;
+        throw new IllegalArgumentException("Player does not have buildModifierCapability capability");
     }
 
     public static void setBuildSettings(EntityPlayer player, BuildSettings buildSettings) {
         if (player == null) {
-            EffortlessBuilding.log("cannot set buildsettings, player is null");
+            EffortlessBuilding.log("Cannot set buildsettings, player is null");
             return;
         }
-        if (player.hasCapability(BuildModifierCapability.buildModifier, null)) {
-            BuildModifierCapability.IBuildModifier capability = player.getCapability(BuildModifierCapability.buildModifier, null);
+        if (player.hasCapability(BuildModifierCapabilityManager.buildModifierCapability, null)) {
+            BuildModifierCapabilityManager.IBuildModifierCapability capability = player.getCapability(
+                    BuildModifierCapabilityManager.buildModifierCapability, null);
             capability.setBuildModifierData(buildSettings);
         } else {
             EffortlessBuilding.log(player, "Saving buildsettings failed.");
         }
     }
 
+    public static String sanitize(BuildSettings buildSettings, EntityPlayer player) {
+        int maxReach = getMaxReach(player);
+        String error = "";
+
+        //Mirror settings
+        Mirror.MirrorSettings m = buildSettings.getMirrorSettings();
+        if (m.radius < 1) {
+            m.radius = 1;
+            error += "Mirror size is too small. Size has been set to 1. ";
+        }
+        if (m.getReach() > maxReach) {
+            m.radius = maxReach / 2;
+            error += "Mirror exceeds your maximum reach. Reach has been set to max. ";
+        }
+
+        //Array settings
+        Array.ArraySettings a = buildSettings.getArraySettings();
+        if (a.count < 0) {
+            a.count = 0;
+            error += "Array count cannot be negative. Count has been set to 0. ";
+        }
+
+        if (a.getReach() > maxReach) {
+            a.count = 0;
+            error += "Array exceeds your maximum reach. Count has been set to 0. ";
+        }
+
+        //Other
+        if (buildSettings.reachUpgrade < 0) {
+            buildSettings.reachUpgrade = 0;
+        }
+        if (buildSettings.reachUpgrade > 3) {
+            buildSettings.reachUpgrade = 3;
+        }
+
+        return error;
+    }
+
+    public static int getMaxReach(EntityPlayer player) {
+        if (player.isCreative()) return BuildConfig.reach.maxReachCreative;
+
+        //Check buildsettings for reachUpgrade
+        int reachUpgrade = getBuildSettings(player).getReachUpgrade();
+        switch (reachUpgrade) {
+            case 0: return BuildConfig.reach.maxReachLevel0;
+            case 1: return BuildConfig.reach.maxReachLevel1;
+            case 2: return BuildConfig.reach.maxReachLevel2;
+            case 3: return BuildConfig.reach.maxReachLevel3;
+        }
+        return BuildConfig.reach.maxReachLevel0;
+    }
+
     public static class BuildSettings {
         private Mirror.MirrorSettings mirrorSettings;
         private Array.ArraySettings arraySettings;
         private boolean quickReplace = false;
+        private int reachUpgrade = 0;
 
         public BuildSettings() {
             mirrorSettings = new Mirror.MirrorSettings();
             arraySettings = new Array.ArraySettings();
         }
 
-        public BuildSettings(Mirror.MirrorSettings mirrorSettings, Array.ArraySettings arraySettings, boolean quickReplace) {
+        public BuildSettings(Mirror.MirrorSettings mirrorSettings, Array.ArraySettings arraySettings, boolean quickReplace, int reachUpgrade) {
             this.mirrorSettings = mirrorSettings;
             this.arraySettings = arraySettings;
             this.quickReplace = quickReplace;
+            this.reachUpgrade = reachUpgrade;
         }
 
         public Mirror.MirrorSettings getMirrorSettings() {
@@ -72,6 +132,14 @@ public class BuildSettingsManager {
         public void setQuickReplace(boolean quickReplace) {
             this.quickReplace = quickReplace;
         }
+
+        public int getReachUpgrade() {
+            return reachUpgrade;
+        }
+
+        public void setReachUpgrade(int reachUpgrade) {
+            this.reachUpgrade = reachUpgrade;
+        }
     }
 
     @SubscribeEvent

src/main/java/nl/requios/effortlessbuilding/EffortlessBuilding.java

@@ -5,6 +5,8 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.Item;
 import net.minecraft.util.text.TextComponentString;
 import net.minecraftforge.common.capabilities.CapabilityManager;
+import net.minecraftforge.common.config.Config;
+import net.minecraftforge.common.config.ConfigManager;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.Mod.EventHandler;
 import net.minecraftforge.fml.common.SidedProxy;
@@ -16,10 +18,10 @@ import net.minecraftforge.fml.common.network.NetworkRegistry;
 import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper;
 import net.minecraftforge.fml.relauncher.Side;
 import nl.requios.effortlessbuilding.capability.*;
-import nl.requios.effortlessbuilding.inventory.RandomizerGuiHandler;
+import nl.requios.effortlessbuilding.gui.RandomizerBagGuiHandler;
 import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
 import nl.requios.effortlessbuilding.network.BuildSettingsMessage;
-import nl.requios.effortlessbuilding.network.QuickReplaceMessage;
+import nl.requios.effortlessbuilding.network.BlockPlacedMessage;
 import nl.requios.effortlessbuilding.proxy.IProxy;
 import org.apache.logging.log4j.Logger;
 
@@ -29,7 +31,7 @@ public class EffortlessBuilding
 {
     public static final String MODID = "effortlessbuilding";
     public static final String NAME = "Effortless Building";
-    public static final String VERSION = "0.1.2";
+    public static final String VERSION = "0.5";
 
     @Mod.Instance(EffortlessBuilding.MODID)
     public static EffortlessBuilding instance;
@@ -44,11 +46,13 @@ public class EffortlessBuilding
 
     public static final SimpleNetworkWrapper packetHandler = NetworkRegistry.INSTANCE.newSimpleChannel(EffortlessBuilding.MODID);
 
+    public static final ItemRandomizerBag ITEM_RANDOMIZER_BAG = new ItemRandomizerBag();
+
     public static final Block[] BLOCKS = {
     };
 
     public static final Item[] ITEMS = {
-            new ItemRandomizerBag()
+            ITEM_RANDOMIZER_BAG
     };
 
     public static final int RANDOMIZER_BAG_GUI = 0;
@@ -59,13 +63,14 @@ public class EffortlessBuilding
     {
         logger = event.getModLog();
 
-        CapabilityManager.INSTANCE.register(BuildModifierCapability.IBuildModifier.class, new BuildModifierCapability.Storage(), BuildModifierCapability.BuildModifier.class);
+        CapabilityManager.INSTANCE.register(
+                BuildModifierCapabilityManager.IBuildModifierCapability.class, new BuildModifierCapabilityManager.Storage(), BuildModifierCapabilityManager.BuildModifierCapability.class);
 
         EffortlessBuilding.packetHandler.registerMessage(BuildSettingsMessage.MessageHandler.class, BuildSettingsMessage.class, 0, Side.SERVER);
         EffortlessBuilding.packetHandler.registerMessage(BuildSettingsMessage.MessageHandler.class, BuildSettingsMessage.class, 0, Side.CLIENT);
 
-        EffortlessBuilding.packetHandler.registerMessage(QuickReplaceMessage.MessageHandler.class, QuickReplaceMessage.class, 1, Side.SERVER);
-        EffortlessBuilding.packetHandler.registerMessage(QuickReplaceMessage.MessageHandler.class, QuickReplaceMessage.class, 1, Side.CLIENT);
+        EffortlessBuilding.packetHandler.registerMessage(BlockPlacedMessage.MessageHandler.class, BlockPlacedMessage.class, 1, Side.SERVER);
+        EffortlessBuilding.packetHandler.registerMessage(BlockPlacedMessage.MessageHandler.class, BlockPlacedMessage.class, 1, Side.CLIENT);
 
         proxy.preInit(event);
     }
@@ -75,7 +80,8 @@ public class EffortlessBuilding
     // Register network handlers
     public void init(FMLInitializationEvent event)
     {
-        NetworkRegistry.INSTANCE.registerGuiHandler(EffortlessBuilding.instance, new RandomizerGuiHandler());
+        ConfigManager.sync(MODID, Config.Type.INSTANCE);
+        NetworkRegistry.INSTANCE.registerGuiHandler(EffortlessBuilding.instance, new RandomizerBagGuiHandler());
         proxy.init(event);
     }
 

src/main/java/nl/requios/effortlessbuilding/EventHandler.java

@@ -1,21 +1,37 @@
 package nl.requios.effortlessbuilding;
 
 import net.minecraft.block.Block;
+import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemBlock;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.EnumFacing;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.World;
+import net.minecraftforge.common.config.Config;
+import net.minecraftforge.common.config.ConfigManager;
 import net.minecraftforge.event.AttachCapabilitiesEvent;
 import net.minecraftforge.event.RegistryEvent;
+import net.minecraftforge.event.entity.player.PlayerEvent;
 import net.minecraftforge.event.world.BlockEvent;
+import net.minecraftforge.fml.client.event.ConfigChangedEvent;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
-import nl.requios.effortlessbuilding.capability.BuildModifierCapability;
+import net.minecraftforge.fml.common.gameevent.TickEvent;
+import nl.requios.effortlessbuilding.capability.BuildModifierCapabilityManager;
+import nl.requios.effortlessbuilding.helper.SurvivalHelper;
+
+import java.util.ArrayList;
+import java.util.List;
 
 @Mod.EventBusSubscriber
 public class EventHandler
 {
+
     @SubscribeEvent
     public static void registerBlocks(RegistryEvent.Register<Block> event)
     {
@@ -36,24 +52,67 @@ public class EventHandler
     @SubscribeEvent
     public static void attachCapabilities(AttachCapabilitiesEvent<Entity> event) {
         if (event.getObject() instanceof EntityPlayer) {
-            event.addCapability(new ResourceLocation(EffortlessBuilding.MODID, "BuildModifier"), new BuildModifierCapability.Provider());
+            event.addCapability(new ResourceLocation(EffortlessBuilding.MODID, "BuildModifier"), new BuildModifierCapabilityManager.Provider());
         }
     }
 
+    @SubscribeEvent
+    public void onConfigChangedEvent(ConfigChangedEvent.OnConfigChangedEvent event)
+    {
+        if (event.getModID().equals(EffortlessBuilding.MODID))
+        {
+            ConfigManager.sync(EffortlessBuilding.MODID, Config.Type.INSTANCE);
+        }
+    }
+
+//    @SubscribeEvent
+//    public static void onServerTick(TickEvent.ServerTickEvent event) {
+//
+//    }
 
     @SubscribeEvent
     public static void onBlockPlaced(BlockEvent.PlaceEvent event) {
-        QuickReplace.onBlockPlaced(event);
-        if (event.isCanceled()) return;
-        Array.onBlockPlaced(event);
-        Mirror.onBlockPlaced(event);
+        BuildModifiers.onBlockPlaced(event);
     }
 
-
     @SubscribeEvent
     public static void onBlockBroken(BlockEvent.BreakEvent event) {
-        Array.onBlockBroken(event);
-        Mirror.onBlockBroken(event);
+        BuildModifiers.onBlockBroken(event);
     }
 
+    @SubscribeEvent
+    public static void breakSpeed(PlayerEvent.BreakSpeed event) {
+        //Disable if config says so
+        if (!BuildConfig.survivalBalancers.increasedMiningTime) return;
+
+        EntityPlayer player = event.getEntityPlayer();
+        World world = player.world;
+        BlockPos pos = event.getPos();
+
+        //EffortlessBuilding.log(player, String.valueOf(event.getNewSpeed()));
+
+        float originalBlockHardness = event.getState().getBlockHardness(world, pos);
+        float totalBlockHardness = 0;
+        //get coordinates
+        List<BlockPos> coordinates = BuildModifiers.findCoordinates(player, pos);
+        for (int i = 1; i < coordinates.size(); i++) {
+            BlockPos coordinate = coordinates.get(i);
+            //get existing blockstates at those coordinates
+            IBlockState blockState = world.getBlockState(coordinate);
+            //add hardness for each blockstate, if can break
+            if (SurvivalHelper.canBreak(world, player, coordinate))
+                totalBlockHardness += blockState.getBlockHardness(world, coordinate);
+        }
+
+        //Grabbing percentage from config
+        float percentage = (float) BuildConfig.survivalBalancers.miningTimePercentage / 100;
+        totalBlockHardness *= percentage;
+        totalBlockHardness += originalBlockHardness;
+
+        float newSpeed = event.getOriginalSpeed() / totalBlockHardness * originalBlockHardness;
+        if (Float.isNaN(newSpeed) || newSpeed == 0f) newSpeed = 1f;
+        event.setNewSpeed(newSpeed);
+
+        //EffortlessBuilding.log(player, String.valueOf(event.getNewSpeed()));
+    }
 }

src/main/java/nl/requios/effortlessbuilding/Mirror.java

@@ -1,47 +1,32 @@
 package nl.requios.effortlessbuilding;
 
-import net.minecraft.block.BlockDirectional;
-import net.minecraft.block.BlockDispenser;
-import net.minecraft.block.BlockStairs;
+import net.minecraft.block.*;
 import net.minecraft.block.state.IBlockState;
-import net.minecraft.client.Minecraft;
-import net.minecraft.client.entity.EntityPlayerSP;
-import net.minecraft.client.renderer.BufferBuilder;
-import net.minecraft.client.renderer.Tessellator;
-import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.item.ItemStack;
 import net.minecraft.util.EnumFacing;
+import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.Vec3i;
 import net.minecraft.world.World;
-import net.minecraftforge.client.event.RenderWorldLastEvent;
+import net.minecraftforge.common.util.BlockSnapshot;
 import net.minecraftforge.event.world.BlockEvent;
-import net.minecraftforge.fml.common.Mod;
-import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
-import net.minecraftforge.fml.relauncher.Side;
-import net.minecraftforge.fml.relauncher.SideOnly;
-import org.lwjgl.opengl.GL11;
-import org.lwjgl.util.Color;
+import net.minecraftforge.items.IItemHandler;
+import nl.requios.effortlessbuilding.helper.SurvivalHelper;
+import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
+
+import java.util.ArrayList;
+import java.util.List;
 
-@Mod.EventBusSubscriber
 public class Mirror {
 
-    //TODO config file
-    public static final int MAX_RADIUS = 200;
-
-    private static final Color colorX = new Color(255, 72, 52);
-    private static final Color colorY = new Color(67, 204, 51);
-    private static final Color colorZ = new Color(52, 247, 255);
-    private static final int lineAlpha = 200;
-    private static final int planeAlpha = 75;
-    private static final Vec3d epsilon = new Vec3d(0.001, 0.001, 0.001); //prevents z-fighting
-
-
     public static class MirrorSettings {
         public boolean enabled = false;
         public Vec3d position = new Vec3d(0.5, 64.5, 0.5);
         public boolean mirrorX = true, mirrorY = false, mirrorZ = false;
         public int radius = 20;
-        public boolean drawLines = true, drawPlanes = false;
+        public boolean drawLines = true, drawPlanes = true;
 
         public MirrorSettings() {
         }
@@ -56,79 +41,147 @@ public class Mirror {
             this.drawLines = drawLines;
             this.drawPlanes = drawPlanes;
         }
-    }
 
-    //Called from EventHandler
-    public static void onBlockPlaced(BlockEvent.PlaceEvent event) {
-        if (event.getWorld().isRemote) return;
-
-        //find mirrorsettings for the player that placed the block
-        MirrorSettings m = BuildSettingsManager.getBuildSettings(event.getPlayer()).getMirrorSettings();
-        if (m == null) return;
-
-        if (!m.enabled || (!m.mirrorX && !m.mirrorY && !m.mirrorZ)) return;
-
-        //if within mirror distance, mirror
-        BlockPos oldBlockPos = event.getPos();
-
-        if (oldBlockPos.getX() + 0.5 < m.position.x - m.radius || oldBlockPos.getX() + 0.5 > m.position.x + m.radius ||
-                oldBlockPos.getY() + 0.5 < m.position.y - m.radius || oldBlockPos.getY() + 0.5 > m.position.y + m.radius ||
-                oldBlockPos.getZ() + 0.5 < m.position.z - m.radius || oldBlockPos.getZ() + 0.5 > m.position.z+ m.radius)
-            return;
-
-        if (m.mirrorX) {
-            placeMirrorX(event.getWorld(), m, oldBlockPos, event.getPlacedBlock());
-        }
-
-        if (m.mirrorY) {
-            placeMirrorY(event.getWorld(), m, oldBlockPos, event.getPlacedBlock());
-        }
-
-        if (m.mirrorZ) {
-            placeMirrorZ(event.getWorld(), m, oldBlockPos, event.getPlacedBlock());
+        public int getReach() {
+            return radius * 2;
         }
     }
+    
+    public static List<BlockPos> findCoordinates(EntityPlayer player, BlockPos startPos) {
+        List<BlockPos> coordinates = new ArrayList<>();
 
-    private static void placeMirrorX(World world, MirrorSettings m, BlockPos oldBlockPos, IBlockState oldBlockState) {
+        //find mirrorsettings for the player
+        MirrorSettings m = BuildSettingsManager.getBuildSettings(player).getMirrorSettings();
+        if (!isEnabled(m, startPos)) return coordinates;
+
+        if (m.mirrorX) coordinateMirrorX(m, startPos, coordinates);
+        if (m.mirrorY) coordinateMirrorY(m, startPos, coordinates);
+        if (m.mirrorZ) coordinateMirrorZ(m, startPos, coordinates);
+
+        return coordinates;
+    }
+
+    private static void coordinateMirrorX(MirrorSettings m, BlockPos oldBlockPos, List<BlockPos> coordinates) {
         //find mirror position
         double x = m.position.x + (m.position.x - oldBlockPos.getX() - 0.5);
         BlockPos newBlockPos = new BlockPos(x, oldBlockPos.getY(), oldBlockPos.getZ());
-        IBlockState newBlockState = oldBlockState;
-        //place block
-        if (world.isBlockLoaded(newBlockPos, true)) {
-            newBlockState = oldBlockState.withMirror(net.minecraft.util.Mirror.FRONT_BACK);
+        coordinates.add(newBlockPos);
 
-            world.setBlockState(newBlockPos, newBlockState);
-        }
-        if (m.mirrorY) placeMirrorY(world, m, newBlockPos, newBlockState);
-        if (m.mirrorZ) placeMirrorZ(world, m, newBlockPos, newBlockState);
+        if (m.mirrorY) coordinateMirrorY(m, newBlockPos, coordinates);
+        if (m.mirrorZ) coordinateMirrorZ(m, newBlockPos, coordinates);
     }
 
-    private static void placeMirrorY(World world, MirrorSettings m, BlockPos oldBlockPos, IBlockState oldBlockState) {
+    private static void coordinateMirrorY(MirrorSettings m, BlockPos oldBlockPos, List<BlockPos> coordinates) {
         //find mirror position
         double y = m.position.y + (m.position.y - oldBlockPos.getY() - 0.5);
         BlockPos newBlockPos = new BlockPos(oldBlockPos.getX(), y, oldBlockPos.getZ());
-        IBlockState newBlockState = oldBlockState;
-        //place block
-        if (world.isBlockLoaded(newBlockPos, true)) {
-            newBlockState = getVerticalMirror(oldBlockState);
+        coordinates.add(newBlockPos);
 
-            world.setBlockState(newBlockPos, newBlockState);
-        }
-        if (m.mirrorZ) placeMirrorZ(world, m, newBlockPos, newBlockState);
+        if (m.mirrorZ) coordinateMirrorZ(m, newBlockPos, coordinates);
     }
 
-    private static void placeMirrorZ(World world, MirrorSettings m, BlockPos oldBlockPos, IBlockState oldBlockState) {
+    private static void coordinateMirrorZ(MirrorSettings m, BlockPos oldBlockPos, List<BlockPos> coordinates) {
         //find mirror position
         double z = m.position.z + (m.position.z - oldBlockPos.getZ() - 0.5);
         BlockPos newBlockPos = new BlockPos(oldBlockPos.getX(), oldBlockPos.getY(), z);
-        IBlockState newBlockState = oldBlockState;
-        //place block
-        if (world.isBlockLoaded(newBlockPos, true)) {
-            newBlockState = oldBlockState.withMirror(net.minecraft.util.Mirror.LEFT_RIGHT);
+        coordinates.add(newBlockPos);
+    }
 
-            world.setBlockState(newBlockPos, newBlockState);
+    public static List<IBlockState> findBlockStates(EntityPlayer player, BlockPos startPos, IBlockState blockState, ItemStack itemStack, List<ItemStack> itemStacks) {
+        List<IBlockState> blockStates = new ArrayList<>();
+
+        //find mirrorsettings for the player
+        MirrorSettings m = BuildSettingsManager.getBuildSettings(player).getMirrorSettings();
+        if (!isEnabled(m, startPos)) return blockStates;
+
+        //Randomizer bag synergy
+        IItemHandler bagInventory = null;
+        if (!itemStack.isEmpty() && itemStack.getItem() instanceof ItemRandomizerBag) {
+            bagInventory = ItemRandomizerBag.getBagInventory(itemStack);
         }
+
+        if (m.mirrorX) blockStateMirrorX(player, m, startPos, blockState, bagInventory, itemStack, EnumHand.MAIN_HAND, blockStates, itemStacks);
+        if (m.mirrorY) blockStateMirrorY(player, m, startPos, blockState, bagInventory, itemStack, EnumHand.MAIN_HAND, blockStates, itemStacks);
+        if (m.mirrorZ) blockStateMirrorZ(player, m, startPos, blockState, bagInventory, itemStack, EnumHand.MAIN_HAND, blockStates, itemStacks);
+
+        return blockStates;
+    }
+
+    private static void blockStateMirrorX(EntityPlayer player, MirrorSettings m, BlockPos oldBlockPos, IBlockState oldBlockState,
+                                          IItemHandler bagInventory, ItemStack itemStack, EnumHand hand, List<IBlockState> blockStates, List<ItemStack> itemStacks) {
+        //find mirror position
+        double x = m.position.x + (m.position.x - oldBlockPos.getX() - 0.5);
+        BlockPos newBlockPos = new BlockPos(x, oldBlockPos.getY(), oldBlockPos.getZ());
+
+        //Randomizer bag synergy
+        if (bagInventory != null) {
+            itemStack = ItemRandomizerBag.pickRandomStack(bagInventory);
+            oldBlockState = BuildModifiers.getBlockStateFromItem(itemStack, player, oldBlockPos, EnumFacing.UP, new Vec3d(0, 0, 0), hand);
+        }
+
+        //Find blockstate
+        IBlockState newBlockState = oldBlockState == null ? null : oldBlockState.withMirror(net.minecraft.util.Mirror.FRONT_BACK);
+
+        //Store blockstate and itemstack
+        blockStates.add(newBlockState);
+        itemStacks.add(itemStack);
+
+        if (m.mirrorY) blockStateMirrorY(player, m, newBlockPos, newBlockState, bagInventory, itemStack, hand, blockStates, itemStacks);
+        if (m.mirrorZ) blockStateMirrorZ(player, m, newBlockPos, newBlockState, bagInventory, itemStack, hand, blockStates, itemStacks);
+    }
+
+    private static void blockStateMirrorY(EntityPlayer player, MirrorSettings m, BlockPos oldBlockPos, IBlockState oldBlockState,
+                                          IItemHandler bagInventory, ItemStack itemStack, EnumHand hand, List<IBlockState> blockStates, List<ItemStack> itemStacks) {
+        //find mirror position
+        double y = m.position.y + (m.position.y - oldBlockPos.getY() - 0.5);
+        BlockPos newBlockPos = new BlockPos(oldBlockPos.getX(), y, oldBlockPos.getZ());
+
+        //Randomizer bag synergy
+        if (bagInventory != null) {
+            itemStack = ItemRandomizerBag.pickRandomStack(bagInventory);
+            oldBlockState = BuildModifiers.getBlockStateFromItem(itemStack, player, oldBlockPos, EnumFacing.UP, new Vec3d(0, 0, 0), hand);
+        }
+
+        //Find blockstate
+        IBlockState newBlockState = oldBlockState == null ? null : getVerticalMirror(oldBlockState);
+
+        //Store blockstate and itemstack
+        blockStates.add(newBlockState);
+        itemStacks.add(itemStack);
+
+        if (m.mirrorZ) blockStateMirrorZ(player, m, newBlockPos, newBlockState, bagInventory, itemStack, hand, blockStates, itemStacks);
+    }
+
+    private static void blockStateMirrorZ(EntityPlayer player, MirrorSettings m, BlockPos oldBlockPos, IBlockState oldBlockState,
+                                          IItemHandler bagInventory, ItemStack itemStack, EnumHand hand, List<IBlockState> blockStates, List<ItemStack> itemStacks) {
+        //find mirror position
+        double z = m.position.z + (m.position.z - oldBlockPos.getZ() - 0.5);
+        BlockPos newBlockPos = new BlockPos(oldBlockPos.getX(), oldBlockPos.getY(), z);
+
+        //Randomizer bag synergy
+        if (bagInventory != null) {
+            itemStack = ItemRandomizerBag.pickRandomStack(bagInventory);
+            oldBlockState = BuildModifiers.getBlockStateFromItem(itemStack, player, oldBlockPos, EnumFacing.UP, new Vec3d(0, 0, 0), hand);
+        }
+
+        //Find blockstate
+        IBlockState newBlockState = oldBlockState == null ? null : oldBlockState.withMirror(net.minecraft.util.Mirror.LEFT_RIGHT);
+
+        //Store blockstate and itemstack
+        blockStates.add(newBlockState);
+        itemStacks.add(itemStack);
+    }
+
+    public static boolean isEnabled(MirrorSettings m, BlockPos startPos) {
+        if (m == null || !m.enabled || (!m.mirrorX && !m.mirrorY && !m.mirrorZ)) return false;
+
+        //if within mirror distance, mirror
+        if (startPos.getX() + 0.5 < m.position.x - m.radius || startPos.getX() + 0.5 > m.position.x + m.radius ||
+            startPos.getY() + 0.5 < m.position.y - m.radius || startPos.getY() + 0.5 > m.position.y + m.radius ||
+            startPos.getZ() + 0.5 < m.position.z - m.radius || startPos.getZ() + 0.5 > m.position.z + m.radius)
+            return false;
+
+        return true;
     }
 
     private static IBlockState getVerticalMirror(IBlockState blockState) {
@@ -141,6 +194,16 @@ public class Mirror {
             }
         }
 
+        //Slabs
+        if (blockState.getBlock() instanceof BlockSlab) {
+            if (((BlockSlab) blockState.getBlock()).isDouble()) return blockState;
+            if (blockState.getValue(BlockSlab.HALF) == BlockSlab.EnumBlockHalf.BOTTOM) {
+                return blockState.withProperty(BlockSlab.HALF, BlockSlab.EnumBlockHalf.TOP);
+            } else {
+                return blockState.withProperty(BlockSlab.HALF, BlockSlab.EnumBlockHalf.BOTTOM);
+            }
+        }
+
         //Buttons, endrod, observer, piston
         if (blockState.getBlock() instanceof BlockDirectional) {
             if (blockState.getValue(BlockDirectional.FACING) == EnumFacing.DOWN) {
@@ -161,241 +224,4 @@ public class Mirror {
 
         return blockState;
     }
-
-    //Called from EventHandler
-    public static void onBlockBroken(BlockEvent.BreakEvent event) {
-        if (event.getWorld().isRemote) return;
-
-        //find mirrorsettings for the player that broke the block
-        MirrorSettings m = BuildSettingsManager.getBuildSettings(event.getPlayer()).getMirrorSettings();
-        if (m == null) return;
-
-        if (!m.enabled || (!m.mirrorX && !m.mirrorY && !m.mirrorZ)) return;
-
-        //if within mirror distance, break mirror block
-        BlockPos oldBlockPos = event.getPos();
-
-        if (oldBlockPos.getX() + 0.5 < m.position.x - m.radius || oldBlockPos.getX() + 0.5 > m.position.x + m.radius ||
-                oldBlockPos.getY() + 0.5 < m.position.y - m.radius || oldBlockPos.getY() + 0.5 > m.position.y + m.radius ||
-                oldBlockPos.getZ() + 0.5 < m.position.z - m.radius || oldBlockPos.getZ() + 0.5 > m.position.z+ m.radius)
-            return;
-
-        if (m.mirrorX) {
-            breakMirrorX(event, m, oldBlockPos);
-        }
-
-        if (m.mirrorY) {
-            breakMirrorY(event, m, oldBlockPos);
-        }
-
-        if (m.mirrorZ) {
-            breakMirrorZ(event, m, oldBlockPos);
-        }
-    }
-
-    private static void breakMirrorX(BlockEvent.BreakEvent event, MirrorSettings m, BlockPos oldBlockPos) {
-        //find mirror position
-        double x = m.position.x + (m.position.x - oldBlockPos.getX() - 0.5);
-        BlockPos newBlockPos = new BlockPos(x, oldBlockPos.getY(), oldBlockPos.getZ());
-        //break block
-        if (event.getWorld().isBlockLoaded(newBlockPos, true)) {
-            event.getWorld().setBlockToAir(newBlockPos);
-        }
-        if (m.mirrorY) breakMirrorY(event, m, newBlockPos);
-        if (m.mirrorZ) breakMirrorZ(event, m, newBlockPos);
-    }
-
-    private static void breakMirrorY(BlockEvent.BreakEvent event, MirrorSettings m, BlockPos oldBlockPos) {
-        //find mirror position
-        double y = m.position.y + (m.position.y - oldBlockPos.getY() - 0.5);
-        BlockPos newBlockPos = new BlockPos(oldBlockPos.getX(), y, oldBlockPos.getZ());
-        //place block
-        if (event.getWorld().isBlockLoaded(newBlockPos, true)) {
-            event.getWorld().setBlockToAir(newBlockPos);
-        }
-        if (m.mirrorZ) breakMirrorZ(event, m, newBlockPos);
-    }
-
-    private static void breakMirrorZ(BlockEvent.BreakEvent event, MirrorSettings m, BlockPos oldBlockPos) {
-        //find mirror position
-        double z = m.position.z + (m.position.z - oldBlockPos.getZ() - 0.5);
-        BlockPos newBlockPos = new BlockPos(oldBlockPos.getX(), oldBlockPos.getY(), z);
-        //place block
-        if (event.getWorld().isBlockLoaded(newBlockPos, true)) {
-            event.getWorld().setBlockToAir(newBlockPos);
-        }
-    }
-
-    @SubscribeEvent
-    @SideOnly(Side.CLIENT)
-    public static void onRender(RenderWorldLastEvent event) {
-        EntityPlayerSP player = Minecraft.getMinecraft().player;
-        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(player);
-        if (buildSettings == null) return;
-        MirrorSettings m = buildSettings.getMirrorSettings();
-
-        if (m == null || !m.enabled || (!m.mirrorX && !m.mirrorY && !m.mirrorZ)) return;
-
-        Vec3d playerPos = new Vec3d(player.posX, player.posY, player.posZ);
-        Vec3d pos = m.position.add(epsilon);
-        int radius = m.radius;
-
-        if (m.mirrorX) {
-            Vec3d posA = new Vec3d(pos.x, pos.y - radius, pos.z - radius);
-            Vec3d posB = new Vec3d(pos.x, pos.y + radius, pos.z + radius);
-
-            drawMirrorPlane(playerPos, posA, posB, colorX, m.drawLines, m.drawPlanes);
-        }
-        if (m.mirrorY) {
-            Vec3d posA = new Vec3d(pos.x - radius, pos.y, pos.z - radius);
-            Vec3d posB = new Vec3d(pos.x + radius, pos.y, pos.z + radius);
-
-            drawMirrorPlaneY(playerPos, posA, posB, colorY, m.drawLines, m.drawPlanes);
-        }
-        if (m.mirrorZ) {
-            Vec3d posA = new Vec3d(pos.x - radius, pos.y - radius, pos.z);
-            Vec3d posB = new Vec3d(pos.x + radius, pos.y + radius, pos.z);
-
-            drawMirrorPlane(playerPos, posA, posB, colorZ, m.drawLines, m.drawPlanes);
-        }
-
-        //Draw axis coordinated colors if two or more axes are enabled
-        //(If only one is enabled the lines are that planes color)
-        if (m.drawLines && ((m.mirrorX && m.mirrorY) || (m.mirrorX && m.mirrorZ) || (m.mirrorY && m.mirrorZ))) {
-            drawMirrorLines(playerPos, m);
-        }
-    }
-
-    @SideOnly(Side.CLIENT)
-    public static void drawMirrorPlane(Vec3d playerPos, Vec3d posA, Vec3d posB, Color c, boolean drawLines, boolean drawPlanes) {
-
-        GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
-        GL11.glPushMatrix();
-        GL11.glDisable(GL11.GL_CULL_FACE);
-        GL11.glDisable(GL11.GL_LIGHTING);
-        GL11.glDisable(GL11.GL_TEXTURE_2D);
-
-        GL11.glEnable(GL11.GL_BLEND);
-        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
-        GL11.glTranslated(-playerPos.x, -playerPos.y, -playerPos.z);
-
-        GL11.glColor4d(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha);
-        GL11.glLineWidth(2);
-        GL11.glDepthMask(false);
-        Tessellator tessellator = Tessellator.getInstance();
-        BufferBuilder bufferBuilder = tessellator.getBuffer();
-
-        if (drawPlanes) {
-            bufferBuilder.begin(GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION_COLOR);
-
-            bufferBuilder.pos(posA.x, posA.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
-            bufferBuilder.pos(posA.x, posB.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
-            bufferBuilder.pos(posB.x, posA.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
-            bufferBuilder.pos(posB.x, posB.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
-
-            tessellator.draw();
-        }
-
-        if (drawLines) {
-            Vec3d middle = posA.add(posB).scale(0.5);
-            bufferBuilder.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION_COLOR);
-
-            bufferBuilder.pos(posA.x, middle.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
-            bufferBuilder.pos(posB.x, middle.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
-            bufferBuilder.pos(middle.x, posA.y, middle.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
-            bufferBuilder.pos(middle.x, posB.y, middle.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
-
-            tessellator.draw();
-        }
-
-        GL11.glDepthMask(true);
-        GL11.glPopMatrix();
-        GL11.glPopAttrib();
-    }
-
-    @SideOnly(Side.CLIENT)
-    public static void drawMirrorPlaneY(Vec3d playerPos, Vec3d posA, Vec3d posB, Color c, boolean drawLines, boolean drawPlanes) {
-
-        GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
-        GL11.glPushMatrix();
-        GL11.glDisable(GL11.GL_CULL_FACE);
-        GL11.glDisable(GL11.GL_LIGHTING);
-        GL11.glDisable(GL11.GL_TEXTURE_2D);
-
-        GL11.glEnable(GL11.GL_BLEND);
-        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
-        GL11.glTranslated(-playerPos.x, -playerPos.y, -playerPos.z);
-
-        GL11.glColor4d(c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
-        GL11.glLineWidth(2);
-        GL11.glDepthMask(false);
-        Tessellator tessellator = Tessellator.getInstance();
-        BufferBuilder bufferBuilder = tessellator.getBuffer();
-
-        if (drawPlanes) {
-            bufferBuilder.begin(GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION_COLOR);
-
-            bufferBuilder.pos(posA.x, posA.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
-            bufferBuilder.pos(posA.x, posA.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
-            bufferBuilder.pos(posB.x, posA.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
-            bufferBuilder.pos(posB.x, posA.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
-
-            tessellator.draw();
-        }
-
-        if (drawLines) {
-            Vec3d middle = posA.add(posB).scale(0.5);
-            bufferBuilder.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION_COLOR);
-
-            bufferBuilder.pos(middle.x, middle.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
-            bufferBuilder.pos(middle.x, middle.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
-            bufferBuilder.pos(posA.x, middle.y, middle.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
-            bufferBuilder.pos(posB.x, middle.y, middle.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
-
-            tessellator.draw();
-        }
-
-        GL11.glDepthMask(true);
-        GL11.glPopMatrix();
-        GL11.glPopAttrib();
-    }
-
-    @SideOnly(Side.CLIENT)
-    public static void drawMirrorLines(Vec3d playerPos, MirrorSettings m) {
-
-        Vec3d pos = m.position.add(epsilon);
-
-        GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
-        GL11.glPushMatrix();
-        GL11.glDisable(GL11.GL_CULL_FACE);
-        GL11.glDisable(GL11.GL_LIGHTING);
-        GL11.glDisable(GL11.GL_TEXTURE_2D);
-
-        GL11.glEnable(GL11.GL_BLEND);
-        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
-        GL11.glTranslated(-playerPos.x, -playerPos.y, -playerPos.z);
-
-        GL11.glColor4d(100, 100, 100, 255);
-        GL11.glLineWidth(2);
-        GL11.glDepthMask(false);
-        Tessellator tessellator = Tessellator.getInstance();
-        BufferBuilder bufferBuilder = tessellator.getBuffer();
-
-        bufferBuilder.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION_COLOR);
-
-        bufferBuilder.pos(pos.x - m.radius, pos.y, pos.z).color(colorZ.getRed(), colorZ.getGreen(), colorZ.getBlue(), lineAlpha).endVertex();
-        bufferBuilder.pos(pos.x + m.radius, pos.y, pos.z).color(colorZ.getRed(), colorZ.getGreen(), colorZ.getBlue(), lineAlpha).endVertex();
-        bufferBuilder.pos(pos.x, pos.y - m.radius, pos.z).color(colorY.getRed(), colorY.getGreen(), colorY.getBlue(), lineAlpha).endVertex();
-        bufferBuilder.pos(pos.x, pos.y + m.radius, pos.z).color(colorY.getRed(), colorY.getGreen(), colorY.getBlue(), lineAlpha).endVertex();
-        bufferBuilder.pos(pos.x, pos.y, pos.z - m.radius).color(colorX.getRed(), colorX.getGreen(), colorX.getBlue(), lineAlpha).endVertex();
-        bufferBuilder.pos(pos.x, pos.y, pos.z + m.radius).color(colorX.getRed(), colorX.getGreen(), colorX.getBlue(), lineAlpha).endVertex();
-
-        tessellator.draw();
-
-        GL11.glDepthMask(true);
-        GL11.glPopMatrix();
-        GL11.glPopAttrib();
-    }
-
-
 }

src/main/java/nl/requios/effortlessbuilding/QuickReplace.java

@@ -1,61 +0,0 @@
-package nl.requios.effortlessbuilding;
-
-import net.minecraft.block.state.IBlockState;
-import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.entity.player.EntityPlayerMP;
-import net.minecraft.util.EnumHand;
-import net.minecraft.util.math.BlockPos;
-import net.minecraftforge.common.util.BlockSnapshot;
-import net.minecraftforge.event.world.BlockEvent;
-import nl.requios.effortlessbuilding.network.QuickReplaceMessage;
-
-import java.util.Dictionary;
-import java.util.Hashtable;
-import java.util.UUID;
-
-public class QuickReplace {
-    //Dilemma in getting blockstate from event to when message is received:
-    // 1) send via client. Then hacking makes it possible to place any block.
-    // 2) save serverside. Messages may not be received chronologically so data could get switched.
-    //Solution for now: save blockstate per player. Messages from 1 player will rarely come unchronologically
-    //and players will rarely switch between blocks that quickly.
-
-    private static Dictionary<UUID, IBlockState> blockStates = new Hashtable<>();
-
-    public static void onBlockPlaced(BlockEvent.PlaceEvent event) {
-        if (event.getWorld().isRemote) return;
-        //Only serverside
-
-        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(event.getPlayer());
-        if (!buildSettings.doQuickReplace()) return;
-
-        //TODO base on player facing instead, no more messages (or break block clientside)
-
-        blockStates.put(event.getPlayer().getUniqueID(), event.getPlacedBlock());
-
-        //RayTraceResult result = event.getWorld().rayTraceBlocks(event.getPlayer().getPositionEyes(1f), event.getPlayer().getLookVec());
-        EffortlessBuilding.packetHandler.sendTo(new QuickReplaceMessage(), (EntityPlayerMP) event.getPlayer());
-
-        event.setCanceled(true);
-    }
-
-    public static void onMessageReceived(EntityPlayer player, QuickReplaceMessage message) {
-        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(player);
-        if (!buildSettings.doQuickReplace()) return;
-
-        //TODO check for bedrock, end portal etc in survival
-
-        if (!message.isBlockHit() || message.getBlockPos() == null) return;
-
-        BlockPos placedAgainstBlockPos = message.getBlockPos();
-        //placedAgainstBlockPos = placedAgainstBlockPos.down();
-        IBlockState blockState = blockStates.get(player.getUniqueID());
-        player.world.setBlockState(placedAgainstBlockPos, blockState);
-
-        //Mirror and Array synergy
-        BlockSnapshot blockSnapshot = new BlockSnapshot(player.world, placedAgainstBlockPos, blockState);
-        BlockEvent.PlaceEvent placeEvent = new BlockEvent.PlaceEvent(blockSnapshot, blockState, player, EnumHand.MAIN_HAND);
-        Array.onBlockPlaced(placeEvent);
-        Mirror.onBlockPlaced(placeEvent);
-    }
-}

src/main/java/nl/requios/effortlessbuilding/capability/BuildModifierCapabilityManager.java

@@ -19,18 +19,18 @@ import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 @Mod.EventBusSubscriber
-public class BuildModifierCapability {
+public class BuildModifierCapabilityManager {
 
-    @CapabilityInject(IBuildModifier.class)
-    public final static Capability<IBuildModifier> buildModifier = null;
+    @CapabilityInject(IBuildModifierCapability.class)
+    public final static Capability<IBuildModifierCapability> buildModifierCapability = null;
 
-    public interface IBuildModifier {
+    public interface IBuildModifierCapability {
         BuildSettings getBuildModifierData();
 
         void setBuildModifierData(BuildSettings buildSettings);
     }
 
-    public static class BuildModifier implements IBuildModifier {
+    public static class BuildModifierCapability implements IBuildModifierCapability {
         private BuildSettings buildSettings;
 
         @Override
@@ -44,11 +44,12 @@ public class BuildModifierCapability {
         }
     }
 
-    public static class Storage implements Capability.IStorage<IBuildModifier> {
+    public static class Storage implements Capability.IStorage<IBuildModifierCapability> {
         @Override
-        public NBTBase writeNBT(Capability<IBuildModifier> capability, IBuildModifier instance, EnumFacing side) {
+        public NBTBase writeNBT(Capability<IBuildModifierCapability> capability, IBuildModifierCapability instance, EnumFacing side) {
             NBTTagCompound compound = new NBTTagCompound();
             BuildSettings buildSettings = instance.getBuildModifierData();
+            if (buildSettings == null) buildSettings = new BuildSettings();
 
             //MIRROR
             Mirror.MirrorSettings m = buildSettings.getMirrorSettings();
@@ -71,12 +72,14 @@ public class BuildModifierCapability {
             compound.setInteger("arrayOffsetZ", a.offset.getZ());
             compound.setInteger("arrayCount", a.count);
 
+            compound.setInteger("reachUpgrade", buildSettings.getReachUpgrade());
+
             //compound.setBoolean("quickReplace", buildSettings.doQuickReplace()); dont save quickreplace
             return compound;
         }
 
         @Override
-        public void readNBT(Capability<IBuildModifier> capability, IBuildModifier instance, EnumFacing side, NBTBase nbt) {
+        public void readNBT(Capability<IBuildModifierCapability> capability, IBuildModifierCapability instance, EnumFacing side, NBTBase nbt) {
             NBTTagCompound compound = (NBTTagCompound) nbt;
 
             //MIRROR
@@ -96,43 +99,45 @@ public class BuildModifierCapability {
             int arrayCount = compound.getInteger("arrayCount");
             Array.ArraySettings arraySettings = new Array.ArraySettings(arrayEnabled, arrayOffset, arrayCount);
 
+            int reachUpgrade = compound.getInteger("reachUpgrade");
+
             //boolean quickReplace = compound.getBoolean("quickReplace"); //dont load quickreplace
 
-            BuildSettings buildSettings = new BuildSettings(mirrorSettings, arraySettings, false);
+            BuildSettings buildSettings = new BuildSettings(mirrorSettings, arraySettings, false, reachUpgrade);
             instance.setBuildModifierData(buildSettings);
         }
     }
 
     public static class Provider implements ICapabilitySerializable<NBTBase> {
-        IBuildModifier inst = buildModifier.getDefaultInstance();
+        IBuildModifierCapability inst = buildModifierCapability.getDefaultInstance();
 
         @Override
         public boolean hasCapability(@Nonnull Capability<?> capability, @Nullable EnumFacing facing) {
-            return capability == buildModifier;
+            return capability == buildModifierCapability;
         }
 
         @Override
         public <T> T getCapability(@Nonnull Capability<T> capability, @Nullable EnumFacing facing) {
-            if (capability == buildModifier) return buildModifier.<T>cast(inst);
+            if (capability == buildModifierCapability) return buildModifierCapability.<T>cast(inst);
             return null;
         }
 
         @Override
         public NBTBase serializeNBT() {
-            return buildModifier.getStorage().writeNBT(buildModifier, inst, null);
+            return buildModifierCapability.getStorage().writeNBT(buildModifierCapability, inst, null);
         }
 
         @Override
         public void deserializeNBT(NBTBase nbt) {
-            buildModifier.getStorage().readNBT(buildModifier, inst, null, nbt);
+            buildModifierCapability.getStorage().readNBT(buildModifierCapability, inst, null, nbt);
         }
     }
 
     // Allows for the capability to persist after death.
     @SubscribeEvent
     public static void clonePlayer(PlayerEvent.Clone event) {
-        IBuildModifier original = event.getOriginal().getCapability(buildModifier, null);
-        IBuildModifier clone = event.getEntity().getCapability(buildModifier, null);
+        IBuildModifierCapability original = event.getOriginal().getCapability(buildModifierCapability, null);
+        IBuildModifierCapability clone = event.getEntity().getCapability(buildModifierCapability, null);
         clone.setBuildModifierData(original.getBuildModifierData());
     }
 }

src/main/java/nl/requios/effortlessbuilding/capability/ItemHandlerCapabilityProvider.java

@@ -0,0 +1,42 @@
+package nl.requios.effortlessbuilding.capability;
+
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.util.EnumFacing;
+import net.minecraftforge.common.capabilities.Capability;
+import net.minecraftforge.common.capabilities.ICapabilitySerializable;
+import net.minecraftforge.items.CapabilityItemHandler;
+import net.minecraftforge.items.IItemHandler;
+import net.minecraftforge.items.ItemStackHandler;
+import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+public class ItemHandlerCapabilityProvider implements ICapabilitySerializable<NBTTagCompound> {
+    IItemHandler itemHandler = new ItemStackHandler(ItemRandomizerBag.INV_SIZE);
+
+    @Override
+    public boolean hasCapability(@Nonnull Capability<?> capability, @Nullable EnumFacing facing) {
+        if (capability == CapabilityItemHandler.ITEM_HANDLER_CAPABILITY)
+            return true;
+        return false;
+    }
+
+    @Nullable
+    @Override
+    public <T> T getCapability(@Nonnull Capability<T> capability, @Nullable EnumFacing facing) {
+        if (capability == CapabilityItemHandler.ITEM_HANDLER_CAPABILITY)
+            return (T) itemHandler;
+        return null;
+    }
+
+    @Override
+    public NBTTagCompound serializeNBT() {
+        return ((ItemStackHandler) itemHandler).serializeNBT();
+    }
+
+    @Override
+    public void deserializeNBT(NBTTagCompound nbt) {
+        ((ItemStackHandler) itemHandler).deserializeNBT(nbt);
+    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/ArraySettingsGui.java

@@ -0,0 +1,211 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.TextFormatting;
+import net.minecraftforge.fml.client.config.GuiCheckBox;
+import nl.requios.effortlessbuilding.Array;
+import nl.requios.effortlessbuilding.BuildSettingsManager;
+import nl.requios.effortlessbuilding.EffortlessBuilding;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class ArraySettingsGui extends GuiCollapsibleScrollEntry {
+
+    protected List<GuiNumberField> arrayNumberFieldList = new ArrayList<>();
+
+    private GuiCheckBox buttonArrayEnabled;
+    private GuiNumberField textArrayOffsetX, textArrayOffsetY, textArrayOffsetZ, textArrayCount;
+
+    public ArraySettingsGui(GuiScrollPane scrollPane) {
+        super(scrollPane);
+    }
+
+    @Override
+    public int initGui(int id, List<GuiButton> buttonList) {
+        id = super.initGui(id, buttonList);
+
+        int y = top;
+        buttonArrayEnabled = new GuiCheckBox(id++, left - 15 + 8, y, "", false);
+        buttonList.add(buttonArrayEnabled);
+
+        y = top + 20;
+        textArrayOffsetX = new GuiNumberField(id++, id++, id++, fontRenderer, buttonList, left + 70, y, 50, 18);
+        textArrayOffsetX.setNumber(0);
+        textArrayOffsetX.setTooltip("How much each copy is shifted.");
+        arrayNumberFieldList.add(textArrayOffsetX);
+
+        textArrayOffsetY = new GuiNumberField(id++, id++, id++, fontRenderer, buttonList, left + 140, y, 50, 18);
+        textArrayOffsetY.setNumber(0);
+        textArrayOffsetY.setTooltip("How much each copy is shifted.");
+        arrayNumberFieldList.add(textArrayOffsetY);
+
+        textArrayOffsetZ = new GuiNumberField(id++, id++, id++, fontRenderer, buttonList, left + 210, y, 50, 18);
+        textArrayOffsetZ.setNumber(0);
+        textArrayOffsetZ.setTooltip("How much each copy is shifted.");
+        arrayNumberFieldList.add(textArrayOffsetZ);
+
+        y = top + 50;
+        textArrayCount = new GuiNumberField(id++, id++, id++, fontRenderer, buttonList, left + 55, y, 50, 18);
+        textArrayCount.setNumber(5);
+        textArrayCount.setTooltip("How many copies should be made.");
+        arrayNumberFieldList.add(textArrayCount);
+
+        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(mc.player);
+        if (buildSettings != null) {
+            Array.ArraySettings a = buildSettings.getArraySettings();
+            buttonArrayEnabled.setIsChecked(a.enabled);
+            textArrayOffsetX.setNumber(a.offset.getX());
+            textArrayOffsetY.setNumber(a.offset.getY());
+            textArrayOffsetZ.setNumber(a.offset.getZ());
+            textArrayCount.setNumber(a.count);
+        }
+
+        setCollapsed(!buttonArrayEnabled.isChecked());
+
+        return id;
+    }
+
+    @Override
+    public void updateScreen() {
+        super.updateScreen();
+        arrayNumberFieldList.forEach(GuiNumberField::update);
+    }
+
+    @Override
+    public void drawEntry(int slotIndex, int x, int y, int listWidth, int slotHeight, int mouseX, int mouseY,
+                          boolean isSelected, float partialTicks) {
+        super.drawEntry(slotIndex, x, y, listWidth, slotHeight, mouseX, mouseY, isSelected, partialTicks);
+
+        int yy = y;
+        int offset = 8;
+
+        buttonArrayEnabled.drawButton(this.mc, mouseX, mouseY, partialTicks);
+        if (buttonArrayEnabled.isChecked()) {
+            buttonArrayEnabled.y = yy;
+            fontRenderer.drawString("Array enabled", left + offset, yy + 2, 0xFFFFFF, true);
+
+            yy = y + 20;
+            fontRenderer.drawString("Offset", left + offset, yy + 5, 0xFFFFFF, true);
+            fontRenderer.drawString("X", left + 50 + offset, yy + 5, 0xFFFFFF, true);
+            textArrayOffsetX.y = yy;
+            fontRenderer.drawString("Y", left + 120 + offset, yy + 5, 0xFFFFFF, true);
+            textArrayOffsetY.y = yy;
+            fontRenderer.drawString("Z", left + 190 + offset, yy + 5, 0xFFFFFF, true);
+            textArrayOffsetZ.y = yy;
+
+            yy = y + 50;
+            fontRenderer.drawString("Count", left + offset, yy + 5, 0xFFFFFF, true);
+            textArrayCount.y = yy;
+
+            int currentReach = Math.max(-1, getArrayReach());
+            int maxReach = BuildSettingsManager.getMaxReach(mc.player);
+            TextFormatting reachColor = isCurrentReachValid(currentReach, maxReach) ? TextFormatting.GRAY : TextFormatting.RED;
+            String reachText = "Reach: " + reachColor + currentReach + TextFormatting.GRAY + "/" + TextFormatting.GRAY + maxReach;
+            fontRenderer.drawString(reachText, left + 176 + offset, yy + 5, 0xFFFFFF, true);
+
+            arrayNumberFieldList.forEach(numberField -> numberField.drawNumberField(this.mc, mouseX, mouseY, partialTicks));
+        } else {
+            buttonArrayEnabled.y = yy;
+            fontRenderer.drawString("Array disabled", left + offset, yy + 2, 0x999999, true);
+        }
+
+    }
+
+    public void drawTooltip(GuiScreen guiScreen, int mouseX, int mouseY) {
+        //Draw tooltips last
+        if (buttonArrayEnabled.isChecked())
+        {
+            arrayNumberFieldList.forEach(numberField -> numberField.drawTooltip(scrollPane.parent, mouseX, mouseY));
+        }
+    }
+
+    @Override
+    public void updatePosition(int slotIndex, int x, int y, float partialTicks) {
+        super.updatePosition(slotIndex, x, y, partialTicks);
+    }
+
+    @Override
+    public void keyTyped(char typedChar, int keyCode) throws IOException {
+        super.keyTyped(typedChar, keyCode);
+        for (GuiNumberField numberField : arrayNumberFieldList) {
+            numberField.keyTyped(typedChar, keyCode);
+        }
+    }
+
+    @Override
+    public boolean mousePressed(int slotIndex, int mouseX, int mouseY, int mouseEvent, int relativeX, int relativeY) {
+         super.mousePressed(slotIndex, mouseX, mouseY, mouseEvent, relativeX, relativeY);
+        arrayNumberFieldList.forEach(numberField -> numberField.mouseClicked(mouseX, mouseY, mouseEvent));
+
+        boolean insideArrayEnabledLabel = mouseX >= left && mouseX < right && relativeY >= -2 && relativeY < 12;
+
+        if (insideArrayEnabledLabel) {
+            buttonArrayEnabled.setIsChecked(!buttonArrayEnabled.isChecked());
+            buttonArrayEnabled.playPressSound(this.mc.getSoundHandler());
+            actionPerformed(buttonArrayEnabled);
+        }
+
+        return true;
+    }
+
+    @Override
+    public void actionPerformed(GuiButton button) {
+        super.actionPerformed(button);
+        if (button == buttonArrayEnabled) {
+            setCollapsed(!buttonArrayEnabled.isChecked());
+        }
+        arrayNumberFieldList.forEach(numberField -> numberField.actionPerformed(button));
+    }
+
+    public Array.ArraySettings getArraySettings() {
+        boolean arrayEnabled = buttonArrayEnabled.isChecked();
+        BlockPos arrayOffset = new BlockPos(0, 0, 0);
+        try {
+            arrayOffset = new BlockPos(textArrayOffsetX.getNumber(), textArrayOffsetY.getNumber(), textArrayOffsetZ.getNumber());
+        } catch (NumberFormatException | NullPointerException ex) {
+            EffortlessBuilding.log(mc.player, "Array offset not valid.");
+        }
+
+        int arrayCount = 5;
+        try {
+            arrayCount = (int) textArrayCount.getNumber();
+        } catch (NumberFormatException | NullPointerException ex) {
+            EffortlessBuilding.log(mc.player, "Array count not valid.");
+        }
+
+        return new Array.ArraySettings(arrayEnabled, arrayOffset, arrayCount);
+    }
+
+    @Override
+    protected String getName() {
+        return "Array";
+    }
+
+    @Override
+    protected int getExpandedHeight() {
+        return 80;
+    }
+
+    private int getArrayReach() {
+        try
+        {
+            //find largest offset
+            double x = Math.abs(textArrayOffsetX.getNumber());
+            double y = Math.abs(textArrayOffsetY.getNumber());
+            double z = Math.abs(textArrayOffsetZ.getNumber());
+            double largestOffset = Math.max(Math.max(x, y), z);
+            return (int) (largestOffset * textArrayCount.getNumber());
+        } catch (NumberFormatException | NullPointerException ex) {
+            return -1;
+        }
+    }
+
+    private boolean isCurrentReachValid(int currentReach, int maxReach) {
+        return currentReach <= maxReach && currentReach > -1;
+    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/GuiCollapsibleScrollEntry.java

@@ -0,0 +1,103 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.FontRenderer;
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.client.gui.GuiScreen;
+
+import java.io.IOException;
+import java.util.List;
+
+public abstract class GuiCollapsibleScrollEntry implements GuiScrollPane.IScrollEntry {
+
+    public GuiScrollPane scrollPane;
+    protected FontRenderer fontRenderer;
+    protected Minecraft mc;
+
+    protected boolean isCollapsed = true;
+    protected int left, right, top, bottom;
+
+    public GuiCollapsibleScrollEntry(GuiScrollPane scrollPane) {
+        this.scrollPane = scrollPane;
+        this.fontRenderer = scrollPane.fontRenderer;
+        this.mc = scrollPane.parent.mc;
+    }
+
+    @Override
+    public int initGui(int id, List<GuiButton> buttonList) {
+
+        left = scrollPane.width / 2 - 140;
+        right = scrollPane.width / 2 + 140;
+        top = scrollPane.height / 2 - 100;
+        bottom = scrollPane.height / 2 + 100;
+
+        return id;
+    }
+
+    @Override
+    public void updateScreen() {
+
+    }
+
+    @Override
+    public void drawEntry(int slotIndex, int x, int y, int listWidth, int slotHeight, int mouseX, int mouseY,
+                          boolean isSelected, float partialTicks) {
+
+    }
+
+    @Override
+    public void drawTooltip(GuiScreen guiScreen, int mouseX, int mouseY) {
+
+    }
+
+    @Override
+    public void updatePosition(int slotIndex, int x, int y, float partialTicks) {
+
+    }
+
+    @Override
+    public void keyTyped(char eventChar, int eventKey) throws IOException {
+
+    }
+
+    @Override
+    public boolean mousePressed(int slotIndex, int mouseX, int mouseY, int mouseEvent, int relativeX, int relativeY) {
+        return false;
+    }
+
+    @Override
+    public void mouseReleased(int slotIndex, int x, int y, int mouseEvent, int relativeX, int relativeY) {
+
+    }
+
+    @Override
+    public void actionPerformed(GuiButton button) {
+
+    }
+
+    @Override
+    public void onGuiClosed() {
+
+    }
+
+    @Override
+    public int getHeight() {
+        return isCollapsed ? getCollapsedHeight() : getExpandedHeight();
+    }
+
+    public void setCollapsed(boolean collapsed) {
+        this.isCollapsed = collapsed;
+    }
+
+    protected String getName() {
+        return "Collapsible scroll entry";
+    }
+
+    protected int getCollapsedHeight() {
+        return 24;
+    }
+
+    protected int getExpandedHeight() {
+        return 100;
+    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/GuiIconButton.java

@@ -0,0 +1,75 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraft.util.ResourceLocation;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class GuiIconButton extends GuiButton {
+
+    private final ResourceLocation resourceLocation;
+    private final int iconX, iconY, iconWidth, iconHeight, iconAltX, iconAltY;
+    List<String> tooltip = new ArrayList<>();
+    private boolean useAltIcon = false;
+
+    public GuiIconButton(int buttonId, int x, int y, int iconX, int iconY, ResourceLocation resourceLocation) {
+        this(buttonId, x, y, 20, 20, iconX, iconY, 20, 20, 20, 0, resourceLocation);
+    }
+
+    public GuiIconButton(int buttonId, int x, int y, int width, int height, int iconX, int iconY, int iconWidth, int iconHeight, int iconAltX, int iconAltY, ResourceLocation resourceLocation) {
+        super(buttonId, x, y, width, height, "");
+        this.iconX = iconX;
+        this.iconY = iconY;
+        this.iconWidth = iconWidth;
+        this.iconHeight = iconHeight;
+        this.iconAltX = iconAltX;
+        this.iconAltY = iconAltY;
+        this.resourceLocation = resourceLocation;
+    }
+
+    public void setTooltip(String tooltip) {
+        setTooltip(Arrays.asList(tooltip));
+    }
+
+    public void setTooltip(List<String> tooltip) {
+        this.tooltip = tooltip;
+    }
+
+    public void setUseAlternateIcon(boolean useAlternateIcon) {
+        this.useAltIcon = useAlternateIcon;
+    }
+
+    @Override
+    public void drawButton(Minecraft mc, int mouseX, int mouseY, float partialTicks) {
+        super.drawButton(mc, mouseX, mouseY, partialTicks);
+        if (this.visible)
+        {
+            this.hovered = mouseX >= this.x && mouseY >= this.y && mouseX < this.x + this.width && mouseY < this.y + this.height;
+            mc.getTextureManager().bindTexture(this.resourceLocation);
+            int currentIconX = this.iconX;
+            int currentIconY = this.iconY;
+
+            if (useAltIcon)
+            {
+                currentIconX += iconAltX;
+                currentIconY += iconAltY;
+            }
+
+            this.drawTexturedModalRect(this.x, this.y, currentIconX, currentIconY, this.iconWidth, this.iconHeight);
+        }
+    }
+
+    public void drawTooltip(GuiScreen guiScreen, int mouseX, int mouseY) {
+        boolean flag = mouseX >= x && mouseX < x + width && mouseY >= y && mouseY < y + height;
+
+        if (flag) {
+            List<String> textLines = new ArrayList<>();
+            textLines.addAll(tooltip);
+            guiScreen.drawHoveringText(textLines, mouseX - 10, mouseY + 25);
+        }
+    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/GuiNumberField.java

@@ -0,0 +1,154 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.*;
+import net.minecraft.util.text.TextFormatting;
+import nl.requios.effortlessbuilding.EffortlessBuilding;
+import org.lwjgl.input.Keyboard;
+import org.lwjgl.input.Mouse;
+
+import java.io.IOException;
+import java.text.DecimalFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class GuiNumberField extends Gui {
+
+    int x, y, width, height;
+    int buttonWidth = 10;
+
+    protected GuiTextField textField;
+    protected GuiButton minusButton, plusButton;
+
+    List<String> tooltip = new ArrayList<>();
+
+    public GuiNumberField(int id1, int id2, int id3, FontRenderer fontRenderer,
+                          List<GuiButton> buttonList, int x, int y, int width, int height) {
+        this.x = x;
+        this.y = y;
+        this.width = width;
+        this.height = height;
+
+        textField = new GuiTextField(id1, fontRenderer, x + buttonWidth + 1, y + 1, width - 2 * buttonWidth - 2, height - 2);
+        minusButton = new GuiButton(id2, x, y - 1, buttonWidth, height + 2, "-");
+        plusButton  = new GuiButton(id3, x + width - buttonWidth, y - 1, buttonWidth, height + 2, "+");
+
+        buttonList.add(minusButton);
+        buttonList.add(plusButton);
+    }
+
+    public void setNumber(double number) {
+        DecimalFormat format = new DecimalFormat("0.#");
+        textField.setText(format.format(number));
+    }
+
+    public double getNumber() {
+        if (textField.getText().isEmpty()) return 0;
+        return Double.parseDouble(textField.getText());
+    }
+
+    public void setTooltip(String tooltip) {
+        setTooltip(Arrays.asList(tooltip));
+    }
+
+    public void setTooltip(List<String> tooltip) {
+        this.tooltip = tooltip;
+    }
+
+    public boolean mouseClicked(int mouseX, int mouseY, int mouseButton) {
+        boolean result = textField.mouseClicked(mouseX, mouseY, mouseButton);
+
+        //Check if clicked inside textfield
+        boolean flag = mouseX >= x + buttonWidth && mouseX < x + width - buttonWidth && mouseY >= y && mouseY < y + height;
+
+        //Rightclicked inside textfield
+        if (flag && mouseButton == 1) {
+            textField.setText("");
+            textField.setFocused(true);
+            result = true;
+        }
+
+        return result;
+    }
+
+    public void drawNumberField(Minecraft mc, int mouseX, int mouseY, float partialTicks) {
+        textField.y = y + 1;
+        minusButton.y = y - 1;
+        plusButton.y = y - 1;
+
+        textField.drawTextBox();
+        minusButton.drawButton(mc, mouseX, mouseY, partialTicks);
+        plusButton.drawButton(mc, mouseX, mouseY, partialTicks);
+    }
+
+    public void drawTooltip(GuiScreen guiScreen, int mouseX, int mouseY) {
+        boolean insideTextField = mouseX >= x + buttonWidth && mouseX < x + width - buttonWidth && mouseY >= y && mouseY < y + height;
+        boolean insideMinusButton = mouseX >= x && mouseX < x + buttonWidth && mouseY >= y && mouseY < y + height;
+        boolean insidePlusButton = mouseX >= x + width - buttonWidth && mouseX < x + width && mouseY >= y && mouseY < y + height;
+
+        List<String> textLines = new ArrayList<>();
+
+        if (insideTextField) {
+            if (!tooltip.isEmpty())
+                textLines.addAll(tooltip);
+//            textLines.add(TextFormatting.GRAY + "Tip: try scrolling.");
+        }
+
+        if (insideMinusButton) {
+            textLines.add("Hold " + TextFormatting.AQUA + "shift " + TextFormatting.RESET + "for " + TextFormatting.RED + "10");
+            textLines.add("Hold " + TextFormatting.AQUA + "ctrl " + TextFormatting.RESET + "for " + TextFormatting.RED + "5");
+        }
+
+        if (insidePlusButton) {
+            textLines.add("Hold " + TextFormatting.AQUA + "shift " + TextFormatting.RESET + "for " + TextFormatting.DARK_GREEN + "10");
+            textLines.add("Hold " + TextFormatting.AQUA + "ctrl " + TextFormatting.RESET + "for " + TextFormatting.DARK_GREEN + "5");
+        }
+
+        guiScreen.drawHoveringText(textLines, mouseX - 10, mouseY + 25);
+
+    }
+
+    protected void actionPerformed(GuiButton button) {
+        float valueChanged = 1f;
+        if (GuiScreen.isCtrlKeyDown()) valueChanged = 5f;
+        if (GuiScreen.isShiftKeyDown()) valueChanged = 10f;
+
+        if (button == minusButton) {
+            setNumber(getNumber() - valueChanged);
+        }
+        if (button == plusButton) {
+            setNumber(getNumber() + valueChanged);
+        }
+    }
+
+    public void update() {
+        textField.updateCursorCounter();
+    }
+
+    protected void keyTyped(char typedChar, int keyCode) throws IOException {
+        if (!textField.isFocused()) return;
+//        if (Character.isDigit(typedChar) || typedChar == '.' || typedChar == '-' || keyCode == Keyboard.KEY_BACK
+//            || keyCode == Keyboard.KEY_DELETE || keyCode == Keyboard.KEY_LEFT || keyCode == Keyboard.KEY_RIGHT
+//            || keyCode == Keyboard.KEY_UP || keyCode == Keyboard.KEY_DOWN) {
+            textField.textboxKeyTyped(typedChar, keyCode);
+//        }
+    }
+
+    //Scroll inside textfield to change number
+//    public void handleMouseInput(int mouseX, int mouseY) {
+//        boolean insideTextField = mouseX >= x + buttonWidth && mouseX < x + width - buttonWidth && mouseY >= y && mouseY < y + height;
+//
+//        if (insideTextField)
+//        {
+//            int valueChanged = 0;
+//            if (Mouse.getEventDWheel() > 0)
+//                valueChanged = 1;
+//            if (Mouse.getEventDWheel() < 0)
+//                valueChanged = -1;
+//
+//            if (valueChanged != 0)
+//                setNumber(getNumber() + valueChanged);
+//        }
+//    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/GuiScrollPane.java

@@ -0,0 +1,435 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.FontRenderer;
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.client.gui.GuiListExtended;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraft.client.renderer.BufferBuilder;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
+import net.minecraft.util.math.MathHelper;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
+import org.lwjgl.input.Mouse;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+@SideOnly(Side.CLIENT)
+public class GuiScrollPane extends GuiListExtended {
+
+    public GuiScreen parent;
+    public FontRenderer fontRenderer;
+    public List<IScrollEntry> listEntries;
+
+    public GuiScrollPane(GuiScreen parent, FontRenderer fontRenderer, int top, int bottom) {
+        super(parent.mc, parent.width, parent.height, top, bottom, 100);
+        this.parent = parent;
+        this.fontRenderer = fontRenderer;
+        this.setShowSelectionBox(false);
+        listEntries = new ArrayList<>();
+    }
+
+    @Override
+    public IGuiListEntry getListEntry(int index) {
+        return listEntries.get(index);
+    }
+
+    @Override
+    protected int getSize() {
+        return listEntries.size();
+    }
+
+    @Override
+    protected int getScrollBarX() {
+        //return width / 2 + 140 + 10;
+        return width - 15;
+    }
+
+    @Override
+    public int getListWidth() {
+        return 280;
+    }
+
+    //Removed background
+    @Override
+    public void drawScreen(int mouseXIn, int mouseYIn, float partialTicks)
+    {
+        if (this.visible)
+        {
+            this.mouseX = mouseXIn;
+            this.mouseY = mouseYIn;
+            int scrollBarLeft = this.getScrollBarX();
+            int scrollBarRight = scrollBarLeft + 6;
+            this.bindAmountScrolled();
+            GlStateManager.disableLighting();
+            GlStateManager.disableFog();
+
+            Tessellator tessellator = Tessellator.getInstance();
+            BufferBuilder bufferbuilder = tessellator.getBuffer();
+            int insideLeft = this.left + this.width / 2 - this.getListWidth() / 2 + 2;
+            int insideTop = this.top + 4 - (int)this.amountScrolled;
+
+            if (this.hasListHeader)
+            {
+                this.drawListHeader(insideLeft, insideTop, tessellator);
+            }
+
+            //All entries
+            this.drawSelectionBox(insideLeft, insideTop, mouseXIn, mouseYIn, partialTicks);
+            GlStateManager.disableDepth();
+            //Dirt overlays on top and bottom
+//            this.overlayBackground(0, this.top, 255, 255);
+//            this.overlayBackground(this.bottom, this.height, 255, 255);
+            GlStateManager.enableBlend();
+            GlStateManager.tryBlendFuncSeparate(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA, GlStateManager.SourceFactor.ZERO, GlStateManager.DestFactor.ONE);
+            GlStateManager.disableAlpha();
+            GlStateManager.shadeModel(7425);
+            GlStateManager.disableTexture2D();
+//            //top fade
+//            bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
+//            bufferbuilder.pos((double)this.left, (double)(this.top + 5), 0.0D).tex(0.0D, 1.0D).color(100, 100, 100, 0).endVertex();
+//            bufferbuilder.pos((double)this.right, (double)(this.top + 5), 0.0D).tex(1.0D, 1.0D).color(100, 100, 100, 0).endVertex();
+//            bufferbuilder.pos((double)this.right, (double)this.top, 0.0D).tex(1.0D, 0.0D).color(100, 100, 100, 100).endVertex();
+//            bufferbuilder.pos((double)this.left, (double)this.top, 0.0D).tex(0.0D, 0.0D).color(100, 100, 100, 100).endVertex();
+//            tessellator.draw();
+//            //top line
+//            bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
+//            bufferbuilder.pos((double)this.left, (double)this.top, 0.0D).tex(0.0D, 1.0D).color(20, 20, 20, 255).endVertex();
+//            bufferbuilder.pos((double)this.right, (double)this.top, 0.0D).tex(1.0D, 1.0D).color(20, 20, 20, 255).endVertex();
+//            bufferbuilder.pos((double)this.right, (double)(this.top - 1), 0.0D).tex(1.0D, 0.0D).color(20, 20, 20, 255).endVertex();
+//            bufferbuilder.pos((double)this.left, (double)(this.top - 1), 0.0D).tex(0.0D, 0.0D).color(20, 20, 20, 255).endVertex();
+//            tessellator.draw();
+//            //bottom fade
+//            bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
+//            bufferbuilder.pos((double)this.left, (double)this.bottom, 0.0D).tex(0.0D, 1.0D).color(10, 10, 10, 100).endVertex();
+//            bufferbuilder.pos((double)this.right, (double)this.bottom, 0.0D).tex(1.0D, 1.0D).color(10, 10, 10, 100).endVertex();
+//            bufferbuilder.pos((double)this.right, (double)(this.bottom - 5), 0.0D).tex(1.0D, 0.0D).color(10, 10, 10, 0).endVertex();
+//            bufferbuilder.pos((double)this.left, (double)(this.bottom - 5), 0.0D).tex(0.0D, 0.0D).color(10, 10, 10, 0).endVertex();
+//            tessellator.draw();
+//            //bottom line
+//            bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
+//            bufferbuilder.pos((double)this.left, (double)(this.bottom + 1), 0.0D).tex(0.0D, 1.0D).color(20, 20, 20, 255).endVertex();
+//            bufferbuilder.pos((double)this.right, (double)(this.bottom + 1), 0.0D).tex(1.0D, 1.0D).color(20, 20, 20, 255).endVertex();
+//            bufferbuilder.pos((double)this.right, (double)this.bottom, 0.0D).tex(1.0D, 0.0D).color(20, 20, 20, 255).endVertex();
+//            bufferbuilder.pos((double)this.left, (double)this.bottom, 0.0D).tex(0.0D, 0.0D).color(20, 20, 20, 255).endVertex();
+//            tessellator.draw();
+
+            //Draw scrollbar
+            int maxScroll = this.getMaxScroll();
+            if (maxScroll > 0)
+            {
+                int k1 = (this.bottom - this.top) * (this.bottom - this.top) / this.getContentHeight();
+                k1 = MathHelper.clamp(k1, 32, this.bottom - this.top - 8);
+                int l1 = (int)this.amountScrolled * (this.bottom - this.top - k1) / maxScroll + this.top;
+
+                if (l1 < this.top)
+                {
+                    l1 = this.top;
+                }
+
+                bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
+                bufferbuilder.pos((double)scrollBarLeft, (double)this.bottom, 0.0D).tex(0.0D, 1.0D).color(0, 0, 0, 255).endVertex();
+                bufferbuilder.pos((double)scrollBarRight, (double)this.bottom, 0.0D).tex(1.0D, 1.0D).color(0, 0, 0, 255).endVertex();
+                bufferbuilder.pos((double)scrollBarRight, (double)this.top, 0.0D).tex(1.0D, 0.0D).color(0, 0, 0, 255).endVertex();
+                bufferbuilder.pos((double)scrollBarLeft, (double)this.top, 0.0D).tex(0.0D, 0.0D).color(0, 0, 0, 255).endVertex();
+                tessellator.draw();
+                bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
+                bufferbuilder.pos((double)scrollBarLeft, (double)(l1 + k1), 0.0D).tex(0.0D, 1.0D).color(128, 128, 128, 255).endVertex();
+                bufferbuilder.pos((double)scrollBarRight, (double)(l1 + k1), 0.0D).tex(1.0D, 1.0D).color(128, 128, 128, 255).endVertex();
+                bufferbuilder.pos((double)scrollBarRight, (double)l1, 0.0D).tex(1.0D, 0.0D).color(128, 128, 128, 255).endVertex();
+                bufferbuilder.pos((double)scrollBarLeft, (double)l1, 0.0D).tex(0.0D, 0.0D).color(128, 128, 128, 255).endVertex();
+                tessellator.draw();
+                bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
+                bufferbuilder.pos((double)scrollBarLeft, (double)(l1 + k1 - 1), 0.0D).tex(0.0D, 1.0D).color(192, 192, 192, 255).endVertex();
+                bufferbuilder.pos((double)(scrollBarRight - 1), (double)(l1 + k1 - 1), 0.0D).tex(1.0D, 1.0D).color(192, 192, 192, 255).endVertex();
+                bufferbuilder.pos((double)(scrollBarRight - 1), (double)l1, 0.0D).tex(1.0D, 0.0D).color(192, 192, 192, 255).endVertex();
+                bufferbuilder.pos((double)scrollBarLeft, (double)l1, 0.0D).tex(0.0D, 0.0D).color(192, 192, 192, 255).endVertex();
+                tessellator.draw();
+            }
+
+            GlStateManager.enableTexture2D();
+            GlStateManager.shadeModel(7424);
+            GlStateManager.enableAlpha();
+            GlStateManager.disableBlend();
+        }
+    }
+
+    //SLOTHEIGHT MODIFICATIONS
+    //SlotHeight is still relied on for determining how much to scroll
+    @Override
+    protected int getContentHeight() {
+        //Add every entry height
+        int height = this.headerPadding;
+        for (IScrollEntry entry : listEntries) {
+            height += entry.getHeight();
+        }
+        return height;
+    }
+
+    public int getContentHeight(int count) {
+        //Add all count entry heights
+        int height = this.headerPadding;
+        for (int i = 0; i < count; i++) {
+            IScrollEntry entry = listEntries.get(i);
+            height += entry.getHeight();
+        }
+        return height;
+    }
+
+    @Override
+    public int getSlotIndexFromScreenCoords(int posX, int posY) {
+        int left = this.left + (this.width - this.getListWidth()) / 2;
+        int right = this.left + (this.width + this.getListWidth()) / 2;
+        int relativeMouseY = posY - this.top - this.headerPadding + (int)this.amountScrolled - 4; //click height in content dimensions
+        //int slotIndex = relativeMouseY / this.slotHeight;
+
+        //Iterate over every entry until relativeMouseY falls within its height
+        for (int i = 0; i < listEntries.size(); i++) {
+            IScrollEntry entry = listEntries.get(i);
+            if (relativeMouseY <= entry.getHeight())
+                return posX < this.getScrollBarX() && posX >= left && posX <= right && i >= 0 &&
+                       relativeMouseY >= 0 && i < this.getSize() ? i : -1;
+            relativeMouseY -= entry.getHeight();
+        }
+        return -1;
+    }
+
+    @Override
+    public boolean mouseClicked(int mouseX, int mouseY, int mouseEvent)
+    {
+        if (this.isMouseYWithinSlotBounds(mouseY))
+        {
+            int i = this.getSlotIndexFromScreenCoords(mouseX, mouseY);
+
+            if (i >= 0)
+            {
+                int j = this.left + this.width / 2 - this.getListWidth() / 2 + 2;
+                int k = this.top + 4 - this.getAmountScrolled() + getContentHeight(i) + this.headerPadding;
+                int relativeX = mouseX - j;
+                int relativeY = mouseY - k;
+
+                if (this.getListEntry(i).mousePressed(i, mouseX, mouseY, mouseEvent, relativeX, relativeY))
+                {
+                    this.setEnabled(false);
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    @Override
+    public boolean mouseReleased(int x, int y, int mouseEvent)
+    {
+        for (int i = 0; i < this.getSize(); ++i)
+        {
+            int j = this.left + this.width / 2 - this.getListWidth() / 2 + 2;
+            int k = this.top + 4 - this.getAmountScrolled() + getContentHeight(i) + this.headerPadding;
+            int relativeX = x - j;
+            int relativeY = y - k;
+            this.getListEntry(i).mouseReleased(i, x, y, mouseEvent, relativeX, relativeY);
+        }
+
+        this.setEnabled(true);
+        return false;
+    }
+
+    @Override
+    public void handleMouseInput() {
+        if (this.isMouseYWithinSlotBounds(this.mouseY)) {
+            if (Mouse.getEventButton() == 0 && Mouse.getEventButtonState() && this.mouseY >= this.top &&
+                this.mouseY <= this.bottom) {
+                int i = this.left + (this.width - this.getListWidth()) / 2;
+                int j = this.left + (this.width + this.getListWidth()) / 2;
+                int relativeMouseY = this.mouseY - this.top - this.headerPadding + (int) this.amountScrolled -
+                                     4; //click height in content dimensions
+                int slotIndex = getSlotIndexFromScreenCoords(this.mouseX, this.mouseY);
+
+                if (slotIndex > -1) {
+                    this.elementClicked(slotIndex, false, this.mouseX, this.mouseY);
+                    this.selectedElement = slotIndex;
+                } else if (this.mouseX >= i && this.mouseX <= j && relativeMouseY < 0) {
+                    this.clickedHeader(this.mouseX - i, this.mouseY - this.top + (int) this.amountScrolled - 4);
+                }
+            }
+
+            if (Mouse.isButtonDown(0) && this.getEnabled()) {
+                if (this.initialClickY == -1) {
+                    boolean flag1 = true;
+
+                    if (this.mouseY >= this.top && this.mouseY <= this.bottom) {
+                        int i2 = this.left + (this.width - this.getListWidth()) / 2;
+                        int j2 = this.left + (this.width + this.getListWidth()) / 2;
+                        int relativeMouseY = this.mouseY - this.top - this.headerPadding + (int) this.amountScrolled -
+                                             4; //click height in content dimensions
+                        int slotIndex = getSlotIndexFromScreenCoords(this.mouseX, this.mouseY);
+
+                        if (slotIndex > -1) {
+                            boolean flag = slotIndex == this.selectedElement &&
+                                           Minecraft.getSystemTime() - this.lastClicked < 250L;
+                            this.elementClicked(slotIndex, flag, this.mouseX, this.mouseY);
+                            this.selectedElement = slotIndex;
+                            this.lastClicked = Minecraft.getSystemTime();
+                        } else if (this.mouseX >= i2 && this.mouseX <= j2 && relativeMouseY < 0) {
+                            this.clickedHeader(this.mouseX - i2,
+                                    this.mouseY - this.top + (int) this.amountScrolled - 4);
+                            flag1 = false;
+                        }
+
+                        int i3 = this.getScrollBarX();
+                        int j1 = i3 + 6;
+
+                        if (this.mouseX >= i3 && this.mouseX <= j1) {
+                            this.scrollMultiplier = -1.0F;
+                            int maxScroll = this.getMaxScroll();
+
+                            if (maxScroll < 1) {
+                                maxScroll = 1;
+                            }
+
+                            int l1 = (int) ((float) ((this.bottom - this.top) * (this.bottom - this.top)) /
+                                            (float) this.getContentHeight());
+                            l1 = MathHelper.clamp(l1, 32, this.bottom - this.top - 8);
+                            this.scrollMultiplier /= (float) (this.bottom - this.top - l1) / (float) maxScroll;
+                        } else {
+                            this.scrollMultiplier = 1.0F;
+                        }
+
+                        if (flag1) {
+                            this.initialClickY = this.mouseY;
+                        } else {
+                            this.initialClickY = -2;
+                        }
+                    } else {
+                        this.initialClickY = -2;
+                    }
+                } else if (this.initialClickY >= 0) {
+                    this.amountScrolled -= (float) (this.mouseY - this.initialClickY) * this.scrollMultiplier;
+                    this.initialClickY = this.mouseY;
+                }
+            } else {
+                this.initialClickY = -1;
+            }
+
+            int i2 = Mouse.getEventDWheel();
+
+            if (i2 != 0) {
+                if (i2 > 0) {
+                    i2 = -1;
+                } else if (i2 < 0) {
+                    i2 = 1;
+                }
+
+                this.amountScrolled += (float) (i2 * this.slotHeight / 2);
+            }
+        }
+    }
+
+    //Draw in center if it fits
+    @Override
+    protected void drawSelectionBox(int insideLeft, int insideTop, int mouseXIn, int mouseYIn, float partialTicks)
+    {
+        int size = this.getSize();
+        Tessellator tessellator = Tessellator.getInstance();
+        BufferBuilder bufferbuilder = tessellator.getBuffer();
+
+        //Find y to start with
+        int y = this.headerPadding + insideTop;
+        int contentHeight = getContentHeight();
+        int insideHeight = this.bottom - this.top - 4;
+
+        if (contentHeight < insideHeight) {
+            //it fits, so we can center it vertically
+            y += (insideHeight - contentHeight) / 2;
+        }
+
+        //Draw all entries
+        for (int i = 0; i < size; ++i)
+        {
+            int entryHeight = listEntries.get(i).getHeight();
+            int entryHeight2 = entryHeight - 4;
+
+            if (y > this.bottom || y + entryHeight2 < this.top)
+            {
+                this.updateItemPos(i, insideLeft, y, partialTicks);
+            }
+
+            if (this.showSelectionBox && this.isSelected(i))
+            {
+                int i1 = this.left + this.width / 2 - this.getListWidth() / 2;
+                int j1 = this.left + this.width / 2 + this.getListWidth() / 2;
+                GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
+                GlStateManager.disableTexture2D();
+                bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
+                bufferbuilder.pos((double)i1, (double)(y + entryHeight2 + 2), 0.0D).tex(0.0D, 1.0D).color(128, 128, 128, 255).endVertex();
+                bufferbuilder.pos((double)j1, (double)(y + entryHeight2 + 2), 0.0D).tex(1.0D, 1.0D).color(128, 128, 128, 255).endVertex();
+                bufferbuilder.pos((double)j1, (double)(y - 2), 0.0D).tex(1.0D, 0.0D).color(128, 128, 128, 255).endVertex();
+                bufferbuilder.pos((double)i1, (double)(y - 2), 0.0D).tex(0.0D, 0.0D).color(128, 128, 128, 255).endVertex();
+                bufferbuilder.pos((double)(i1 + 1), (double)(y + entryHeight2 + 1), 0.0D).tex(0.0D, 1.0D).color(0, 0, 0, 255).endVertex();
+                bufferbuilder.pos((double)(j1 - 1), (double)(y + entryHeight2 + 1), 0.0D).tex(1.0D, 1.0D).color(0, 0, 0, 255).endVertex();
+                bufferbuilder.pos((double)(j1 - 1), (double)(y - 1), 0.0D).tex(1.0D, 0.0D).color(0, 0, 0, 255).endVertex();
+                bufferbuilder.pos((double)(i1 + 1), (double)(y - 1), 0.0D).tex(0.0D, 0.0D).color(0, 0, 0, 255).endVertex();
+                tessellator.draw();
+                GlStateManager.enableTexture2D();
+            }
+
+            this.drawSlot(i, insideLeft, y, entryHeight2, mouseXIn, mouseYIn, partialTicks);
+            y += entryHeight;
+        }
+    }
+
+    //PASSTHROUGHS
+    public int initGui(int id, List<GuiButton> buttonList) {
+        for (IScrollEntry entry : this.listEntries) {
+            id = entry.initGui(id, buttonList);
+        }
+        registerScrollButtons(id++, id++);
+        return id;
+    }
+
+    public void updateScreen() {
+        for (IScrollEntry entry : this.listEntries)
+            entry.updateScreen();
+    }
+
+    public void drawTooltip(GuiScreen guiScreen, int mouseX, int mouseY) {
+        for (IScrollEntry entry : this.listEntries)
+            entry.drawTooltip(guiScreen, mouseX, mouseY);
+    }
+
+    public void keyTyped(char eventChar, int eventKey) throws IOException {
+        for (IScrollEntry entry : this.listEntries)
+            entry.keyTyped(eventChar, eventKey);
+    }
+
+    public void actionPerformed(GuiButton button) {
+        for (IScrollEntry entry : this.listEntries)
+            entry.actionPerformed(button);
+    }
+
+    public void onGuiClosed() {
+        for (IScrollEntry entry : this.listEntries)
+            entry.onGuiClosed();
+    }
+
+    public interface IScrollEntry extends GuiListExtended.IGuiListEntry {
+        int initGui(int id, List<GuiButton> buttonList);
+
+        void updateScreen();
+
+        void drawTooltip(GuiScreen guiScreen, int mouseX, int mouseY);
+
+        void keyTyped(char eventChar, int eventKey) throws IOException;
+
+        void actionPerformed(GuiButton button);
+
+        void onGuiClosed();
+
+        int getHeight();
+    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/MirrorSettingsGui.java

@@ -0,0 +1,294 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.text.TextFormatting;
+import net.minecraftforge.fml.client.config.GuiCheckBox;
+import nl.requios.effortlessbuilding.BuildSettingsManager;
+import nl.requios.effortlessbuilding.EffortlessBuilding;
+import nl.requios.effortlessbuilding.Mirror;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class MirrorSettingsGui extends GuiCollapsibleScrollEntry {
+
+    protected static final ResourceLocation BUILDING_ICONS = new ResourceLocation(EffortlessBuilding.MODID, "textures/gui/building_icons.png");
+
+    protected List<GuiButton> mirrorButtonList = new ArrayList<>();
+    protected List<GuiIconButton> mirrorIconButtonList = new ArrayList<>();
+    protected List<GuiNumberField> mirrorNumberFieldList = new ArrayList<>();
+
+    private GuiNumberField textMirrorPosX, textMirrorPosY, textMirrorPosZ, textMirrorRadius;
+    private GuiCheckBox buttonMirrorEnabled, buttonMirrorX, buttonMirrorY, buttonMirrorZ;
+    private GuiIconButton buttonCurrentPosition, buttonToggleOdd, buttonDrawPlanes, buttonDrawLines;
+    private boolean drawPlanes, drawLines, toggleOdd;
+
+    public MirrorSettingsGui(GuiScrollPane scrollPane) {
+        super(scrollPane);
+    }
+
+    @Override
+    public int initGui(int id, List<GuiButton> buttonList) {
+        id = super.initGui(id, buttonList);
+
+        int y = top - 2;
+        buttonMirrorEnabled = new GuiCheckBox(id++, left - 15 + 8, y, "", false);
+        buttonList.add(buttonMirrorEnabled);
+
+        y = top + 18;
+        textMirrorPosX = new GuiNumberField(id++, id++, id++, fontRenderer, buttonList, left + 58, y, 62, 18);
+        textMirrorPosX.setNumber(0);
+        textMirrorPosX.setTooltip(
+                Arrays.asList("The position of the mirror.", TextFormatting.GRAY + "For odd numbered builds add 0.5."));
+        mirrorNumberFieldList.add(textMirrorPosX);
+
+        textMirrorPosY = new GuiNumberField(id++, id++, id++, fontRenderer, buttonList, left + 138, y, 62, 18);
+        textMirrorPosY.setNumber(64);
+        textMirrorPosY.setTooltip(Arrays.asList("The position of the mirror.", TextFormatting.GRAY + "For odd numbered builds add 0.5."));
+        mirrorNumberFieldList.add(textMirrorPosY);
+
+        textMirrorPosZ = new GuiNumberField(id++, id++, id++, fontRenderer, buttonList, left + 218, y, 62, 18);
+        textMirrorPosZ.setNumber(0);
+        textMirrorPosZ.setTooltip(Arrays.asList("The position of the mirror.", TextFormatting.GRAY + "For odd numbered builds add 0.5."));
+        mirrorNumberFieldList.add(textMirrorPosZ);
+
+        y = top + 50;
+        buttonMirrorX = new GuiCheckBox(id++, left + 60, y, " X", true);
+        mirrorButtonList.add(buttonMirrorX);
+
+        buttonMirrorY = new GuiCheckBox(id++, left + 100, y, " Y", false);
+        mirrorButtonList.add(buttonMirrorY);
+
+        buttonMirrorZ = new GuiCheckBox(id++, left + 140, y, " Z", false);
+        mirrorButtonList.add(buttonMirrorZ);
+
+        y = top + 47;
+        textMirrorRadius = new GuiNumberField(id++, id++, id++, fontRenderer, buttonList, left + 218, y, 62, 18);
+        textMirrorRadius.setNumber(50);
+        //TODO change to diameter (remove /2)
+        textMirrorRadius.setTooltip(Arrays.asList("How far the mirror reaches in any direction.",
+                TextFormatting.GRAY + "Max: " + TextFormatting.GOLD + BuildSettingsManager.getMaxReach(mc.player) / 2,
+                TextFormatting.GRAY + "Upgradeable in survival with reach upgrades."));
+        mirrorNumberFieldList.add(textMirrorRadius);
+
+        y = top + 72;
+        buttonCurrentPosition = new GuiIconButton(id++, left + 5, y, 0, 0, BUILDING_ICONS);
+        buttonCurrentPosition.setTooltip("Set mirror position to current player position");
+        mirrorIconButtonList.add(buttonCurrentPosition);
+
+        buttonToggleOdd = new GuiIconButton(id++, left + 35, y, 0, 20, BUILDING_ICONS);
+        buttonToggleOdd.setTooltip(Arrays.asList("Set mirror position to middle of block", "for odd numbered builds"));
+        mirrorIconButtonList.add(buttonToggleOdd);
+
+        buttonDrawLines = new GuiIconButton(id++, left + 65, y, 0, 40, BUILDING_ICONS);
+        buttonDrawLines.setTooltip("Show lines");
+        mirrorIconButtonList.add(buttonDrawLines);
+
+        buttonDrawPlanes = new GuiIconButton(id++, left + 95, y, 0, 60, BUILDING_ICONS);
+        buttonDrawPlanes.setTooltip("Show area");
+        mirrorIconButtonList.add(buttonDrawPlanes);
+
+        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(mc.player);
+        if (buildSettings != null) {
+            Mirror.MirrorSettings m = buildSettings.getMirrorSettings();
+            buttonMirrorEnabled.setIsChecked(m.enabled);
+            textMirrorPosX.setNumber(m.position.x);
+            textMirrorPosY.setNumber(m.position.y);
+            textMirrorPosZ.setNumber(m.position.z);
+            buttonMirrorX.setIsChecked(m.mirrorX);
+            buttonMirrorY.setIsChecked(m.mirrorY);
+            buttonMirrorZ.setIsChecked(m.mirrorZ);
+            textMirrorRadius.setNumber(m.radius);
+            drawLines = m.drawLines;
+            drawPlanes = m.drawPlanes;
+            buttonDrawLines.setUseAlternateIcon(drawLines);
+            buttonDrawPlanes.setUseAlternateIcon(drawPlanes);
+            buttonDrawLines.setTooltip(drawLines ? "Hide lines" : "Show lines");
+            buttonDrawPlanes.setTooltip(drawPlanes ? "Hide area" : "Show area");
+            if (textMirrorPosX.getNumber() == Math.floor(textMirrorPosX.getNumber())) {
+                toggleOdd = false;
+                buttonToggleOdd.setTooltip(Arrays.asList("Set mirror position to middle of block", "for odd numbered builds"));
+            } else {
+                toggleOdd = true;
+                buttonToggleOdd.setTooltip(Arrays.asList("Set mirror position to corner of block", "for even numbered builds"));
+            }
+            buttonToggleOdd.setUseAlternateIcon(toggleOdd);
+        }
+
+        buttonList.addAll(mirrorButtonList);
+        buttonList.addAll(mirrorIconButtonList);
+
+        setCollapsed(!buttonMirrorEnabled.isChecked());
+
+        return id;
+    }
+
+    @Override
+    public void updateScreen() {
+        super.updateScreen();
+        mirrorNumberFieldList.forEach(GuiNumberField::update);
+    }
+
+    @Override
+    public void drawEntry(int slotIndex, int x, int y, int listWidth, int slotHeight, int mouseX, int mouseY,
+                          boolean isSelected, float partialTicks) {
+        super.drawEntry(slotIndex, x, y, listWidth, slotHeight, mouseX, mouseY, isSelected, partialTicks);
+
+        int yy = y;
+        int offset = 8;
+
+        buttonMirrorEnabled.drawButton(this.mc, mouseX, mouseY, partialTicks);
+        if (buttonMirrorEnabled.isChecked()) {
+            buttonMirrorEnabled.y = yy;
+            fontRenderer.drawString("Mirror enabled", left + offset, yy + 2, 0xFFFFFF, true);
+
+            yy = y + 18;
+            fontRenderer.drawString("Position", left + offset, yy + 5, 0xFFFFFF, true);
+            fontRenderer.drawString("X", left + 40 + offset, yy + 5, 0xFFFFFF, true);
+            textMirrorPosX.y = yy;
+            fontRenderer.drawString("Y", left + 120 + offset, yy + 5, 0xFFFFFF, true);
+            textMirrorPosY.y = yy;
+            fontRenderer.drawString("Z", left + 200 + offset, yy + 5, 0xFFFFFF, true);
+            textMirrorPosZ.y = yy;
+
+            yy = y + 50;
+            fontRenderer.drawString("Direction", left + offset, yy + 2, 0xFFFFFF, true);
+            buttonMirrorX.y = yy;
+            buttonMirrorY.y = yy;
+            buttonMirrorZ.y = yy;
+            fontRenderer.drawString("Reach", left + 176 + offset, yy + 2, 0xFFFFFF, true);
+            textMirrorRadius.y = yy - 3;
+
+            yy = y + 72;
+            buttonCurrentPosition.y = yy;
+            buttonToggleOdd.y = yy;
+            buttonDrawLines.y = yy;
+            buttonDrawPlanes.y = yy;
+
+            mirrorButtonList.forEach(button -> button.drawButton(this.mc, mouseX, mouseY, partialTicks));
+            mirrorIconButtonList.forEach(button -> button.drawButton(this.mc, mouseX, mouseY, partialTicks));
+            mirrorNumberFieldList.forEach(numberField -> numberField.drawNumberField(this.mc, mouseX, mouseY, partialTicks));
+        } else {
+            buttonMirrorEnabled.y = yy;
+            fontRenderer.drawString("Mirror disabled", left + offset, yy + 2, 0x999999, true);
+        }
+
+    }
+
+    public void drawTooltip(GuiScreen guiScreen, int mouseX, int mouseY) {
+        //Draw tooltips last
+        if (buttonMirrorEnabled.isChecked())
+        {
+            mirrorIconButtonList.forEach(iconButton -> iconButton.drawTooltip(scrollPane.parent, mouseX, mouseY));
+            mirrorNumberFieldList.forEach(numberField -> numberField.drawTooltip(scrollPane.parent, mouseX, mouseY));
+        }
+    }
+
+    @Override
+    public void updatePosition(int slotIndex, int x, int y, float partialTicks) {
+        super.updatePosition(slotIndex, x, y, partialTicks);
+    }
+
+    @Override
+    public void keyTyped(char typedChar, int keyCode) throws IOException {
+        super.keyTyped(typedChar, keyCode);
+        for (GuiNumberField numberField : mirrorNumberFieldList) {
+            numberField.keyTyped(typedChar, keyCode);
+        }
+    }
+
+    @Override
+    public boolean mousePressed(int slotIndex, int mouseX, int mouseY, int mouseEvent, int relativeX, int relativeY) {
+        super.mousePressed(slotIndex, mouseX, mouseY, mouseEvent, relativeX, relativeY);
+        mirrorNumberFieldList.forEach(numberField -> numberField.mouseClicked(mouseX, mouseY, mouseEvent));
+
+        boolean insideMirrorEnabledLabel = mouseX >= left && mouseX < right && relativeY >= -2 && relativeY < 12;
+
+        if (insideMirrorEnabledLabel) {
+            buttonMirrorEnabled.setIsChecked(!buttonMirrorEnabled.isChecked());
+            buttonMirrorEnabled.playPressSound(this.mc.getSoundHandler());
+            actionPerformed(buttonMirrorEnabled);
+        }
+
+        return true;
+    }
+
+    @Override
+    public void actionPerformed(GuiButton button) {
+        super.actionPerformed(button);
+        if (button == buttonMirrorEnabled) {
+            setCollapsed(!buttonMirrorEnabled.isChecked());
+        }
+        if (button == buttonCurrentPosition) {
+            Vec3d pos = new Vec3d(Math.floor(mc.player.posX) + 0.5, Math.floor(mc.player.posY) + 0.5, Math.floor(mc.player.posZ) + 0.5);
+            textMirrorPosX.setNumber(pos.x);
+            textMirrorPosY.setNumber(pos.y);
+            textMirrorPosZ.setNumber(pos.z);
+        }
+        if (button == buttonToggleOdd) {
+            toggleOdd = !toggleOdd;
+            buttonToggleOdd.setUseAlternateIcon(toggleOdd);
+            if (toggleOdd) {
+                buttonToggleOdd.setTooltip(Arrays.asList("Set mirror position to corner of block", "for even numbered builds"));
+                textMirrorPosX.setNumber(textMirrorPosX.getNumber() + 0.5);
+                textMirrorPosY.setNumber(textMirrorPosY.getNumber() + 0.5);
+                textMirrorPosZ.setNumber(textMirrorPosZ.getNumber() + 0.5);
+            } else {
+                buttonToggleOdd.setTooltip(Arrays.asList("Set mirror position to middle of block", "for odd numbered builds"));
+                textMirrorPosX.setNumber(Math.floor(textMirrorPosX.getNumber()));
+                textMirrorPosY.setNumber(Math.floor(textMirrorPosY.getNumber()));
+                textMirrorPosZ.setNumber(Math.floor(textMirrorPosZ.getNumber()));
+            }
+        }
+        if (button == buttonDrawLines) {
+            drawLines = !drawLines;
+            buttonDrawLines.setUseAlternateIcon(drawLines);
+            buttonDrawLines.setTooltip(drawLines ? "Hide lines" : "Show lines");
+        }
+        if (button == buttonDrawPlanes) {
+            drawPlanes = !drawPlanes;
+            buttonDrawPlanes.setUseAlternateIcon(drawPlanes);
+            buttonDrawPlanes.setTooltip(drawPlanes ? "Hide area" : "Show area");
+        }
+        mirrorNumberFieldList.forEach(numberField -> numberField.actionPerformed(button));
+    }
+
+    public Mirror.MirrorSettings getMirrorSettings() {
+        boolean mirrorEnabled = buttonMirrorEnabled.isChecked();
+
+        Vec3d mirrorPos = new Vec3d(0, 64, 0);
+        try {
+            mirrorPos = new Vec3d(textMirrorPosX.getNumber(), textMirrorPosY.getNumber(), textMirrorPosZ.getNumber());
+        } catch (NumberFormatException | NullPointerException ex) {
+            EffortlessBuilding.log(mc.player, "Mirror position not valid.");
+        }
+
+        boolean mirrorX = buttonMirrorX.isChecked();
+        boolean mirrorY = buttonMirrorY.isChecked();
+        boolean mirrorZ = buttonMirrorZ.isChecked();
+
+        int mirrorRadius = 50;
+        try {
+            mirrorRadius = (int) textMirrorRadius.getNumber();
+        } catch (NumberFormatException | NullPointerException ex) {
+            EffortlessBuilding.log(mc.player, "Mirror radius not valid.");
+        }
+
+        return new Mirror.MirrorSettings(mirrorEnabled, mirrorPos, mirrorX, mirrorY, mirrorZ, mirrorRadius, drawLines, drawPlanes);
+    }
+
+    @Override
+    protected String getName() {
+        return "Mirror";
+    }
+
+    @Override
+    protected int getExpandedHeight() {
+        return 100;
+    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/RandomizerBagContainer.java

@@ -0,0 +1,135 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.InventoryPlayer;
+import net.minecraft.inventory.ClickType;
+import net.minecraft.inventory.Container;
+import net.minecraft.inventory.IInventory;
+import net.minecraft.inventory.Slot;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.EnumHand;
+import net.minecraftforge.items.IItemHandler;
+import net.minecraftforge.items.SlotItemHandler;
+import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
+
+public class RandomizerBagContainer extends Container {
+
+    private final IItemHandler bagInventory;
+    private final int sizeInventory;
+
+    private static final int INV_START = ItemRandomizerBag.INV_SIZE, INV_END = INV_START + 26,
+            HOTBAR_START = INV_END + 1, HOTBAR_END = HOTBAR_START + 8;
+
+    public RandomizerBagContainer(InventoryPlayer parInventoryPlayer, IItemHandler parIInventory) {
+        bagInventory = parIInventory;
+        sizeInventory = bagInventory.getSlots();
+        for (int i = 0; i < sizeInventory; ++i) {
+            this.addSlotToContainer(new SlotItemHandler(bagInventory, i, 44 + (18 * i), 20));
+        }
+
+        // add player inventory slots
+        int i;
+        for (i = 0; i < 3; ++i) {
+            for (int j = 0; j < 9; ++j) {
+                addSlotToContainer(new Slot(parInventoryPlayer, j + i * 9 + 9, 8 + j * 18, 51 + i * 18));
+            }
+        }
+
+        // add hotbar slots
+        for (i = 0; i < 9; ++i) {
+            addSlotToContainer(new Slot(parInventoryPlayer, i, 8 + i * 18, 109));
+        }
+    }
+
+    @Override
+    public boolean canInteractWith(EntityPlayer playerIn) {
+        return true;
+    }
+
+    @Override
+    public Slot getSlot(int parSlotIndex)
+    {
+        if(parSlotIndex >= inventorySlots.size())
+            parSlotIndex = inventorySlots.size() - 1;
+        return super.getSlot(parSlotIndex);
+    }
+
+    @Override
+    public ItemStack transferStackInSlot(EntityPlayer playerIn, int slotIndex) {
+        ItemStack itemstack = ItemStack.EMPTY;
+        Slot slot = this.inventorySlots.get(slotIndex);
+
+        if (slot != null && slot.getHasStack()) {
+            ItemStack itemstack1 = slot.getStack();
+            itemstack = itemstack1.copy();
+
+            // If item is in our custom inventory
+            if (slotIndex < INV_START) {
+                // try to place in player inventory / action bar
+                if (!this.mergeItemStack(itemstack1, INV_START, HOTBAR_END + 1, true)) {
+                    return ItemStack.EMPTY;
+                }
+
+                slot.onSlotChange(itemstack1, itemstack);
+            }
+            // Item is in inventory / hotbar, try to place in custom inventory or armor slots
+            else {
+                /**
+                 * Implementation number 1: Shift-click into your custom inventory
+                 */
+                if (slotIndex >= INV_START) {
+                    // place in custom inventory
+                    if (!this.mergeItemStack(itemstack1, 0, INV_START, false)) {
+                        return ItemStack.EMPTY;
+                    }
+                }
+
+            }
+
+            if (itemstack1.getCount() == 0) {
+                slot.putStack(ItemStack.EMPTY);
+            } else {
+                slot.onSlotChanged();
+            }
+
+            if (itemstack1.getCount() == itemstack.getCount()) {
+                return ItemStack.EMPTY;
+            }
+
+            slot.onTake(playerIn, itemstack1);
+        }
+
+        return itemstack;
+    }
+
+    /**
+     * You should override this method to prevent the player from moving the stack that
+     * opened the inventory, otherwise if the player moves it, the inventory will not
+     * be able to save properly
+     */
+    @Override
+    public ItemStack slotClick(int slot, int dragType, ClickType clickTypeIn, EntityPlayer player) {
+        // this will prevent the player from interacting with the item that opened the inventory:
+        ItemStack clickItemStack = super.slotClick(slot, dragType, clickTypeIn, player);
+        if (slot >= 0 && getSlot(slot) != null && getSlot(slot).getStack() == player.getHeldItem(EnumHand.MAIN_HAND)) {
+            return ItemStack.EMPTY;
+        }
+        return clickItemStack;
+    }
+
+    /**
+     * Callback for when the crafting gui is closed.
+     */
+//    @Override
+//    public void onContainerClosed(EntityPlayer player)
+//    {
+//        if(player.inventory.getItemStack() != null)
+//        {
+//            player.entityDropItem(player.inventory.getItemStack(), 0.5f);
+//        }
+//        if(!player.world.isRemote)
+//        {
+//            detectAndSendChanges();
+//        }
+//    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/RandomizerBagGuiContainer.java

@@ -0,0 +1,49 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.client.gui.inventory.GuiContainer;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.entity.player.InventoryPlayer;
+import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
+import net.minecraftforge.items.IItemHandler;
+import nl.requios.effortlessbuilding.EffortlessBuilding;
+
+@SideOnly(Side.CLIENT)
+public class RandomizerBagGuiContainer extends GuiContainer {
+    private static final ResourceLocation guiTextures =
+            new ResourceLocation(EffortlessBuilding.MODID + ":textures/gui/container/randomizerbag.png");
+    private final InventoryPlayer inventoryPlayer;
+    private final IItemHandler inventoryBag;
+
+    public RandomizerBagGuiContainer(InventoryPlayer inventoryPlayer, IItemHandler inventoryBag) {
+        super(new RandomizerBagContainer(inventoryPlayer, inventoryBag));
+        this.inventoryPlayer = inventoryPlayer;
+        this.inventoryBag = inventoryBag;
+
+        ySize = 134;
+    }
+
+    @Override
+    public void drawScreen(int mouseX, int mouseY, float partialTicks) {
+        drawDefaultBackground();
+        super.drawScreen(mouseX, mouseY, partialTicks);
+        this.renderHoveredToolTip(mouseX, mouseY);
+    }
+
+    @Override
+    protected void drawGuiContainerForegroundLayer(int mouseX, int mouseY) {
+        String s = "Randomizer Bag";
+        fontRenderer.drawString(s, 8, 6, 0x404040);
+        fontRenderer.drawString(inventoryPlayer.getDisplayName().getUnformattedText(), 8, ySize - 96 + 2, 0x404040);
+    }
+
+    @Override
+    protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) {
+        GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
+        mc.getTextureManager().bindTexture(guiTextures);
+        int marginHorizontal = (width - xSize) / 2;
+        int marginVertical = (height - ySize) / 2;
+        drawTexturedModalRect(marginHorizontal, marginVertical, 0, 0, xSize, ySize);
+    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/RandomizerBagGuiHandler.java

@@ -0,0 +1,42 @@
+package nl.requios.effortlessbuilding.gui;
+
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.EnumHand;
+import net.minecraft.world.World;
+import net.minecraftforge.fml.common.network.IGuiHandler;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
+import net.minecraftforge.items.CapabilityItemHandler;
+import net.minecraftforge.items.IItemHandler;
+import nl.requios.effortlessbuilding.EffortlessBuilding;
+
+import javax.annotation.Nullable;
+
+public class RandomizerBagGuiHandler implements IGuiHandler {
+    @Nullable
+    @Override
+    public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
+        if (ID == EffortlessBuilding.RANDOMIZER_BAG_GUI) {
+            // Use the player's held item to create the container
+            IItemHandler capability = player.getHeldItemMainhand().hasCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null) ?
+                    player.getHeldItemMainhand().getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null) :
+                    player.getHeldItemOffhand().getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null);
+            return new RandomizerBagContainer(player.inventory, capability);
+        }
+        return null;
+    }
+
+    @Nullable
+    @Override
+    @SideOnly(Side.CLIENT)
+    public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
+        if (ID == EffortlessBuilding.RANDOMIZER_BAG_GUI) {
+            // Use the player's held item to create the client-side gui container
+            IItemHandler capability = player.getHeldItemMainhand().hasCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null) ?
+                    player.getHeldItemMainhand().getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null) :
+                    player.getHeldItemOffhand().getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null);
+            return new RandomizerBagGuiContainer(player.inventory, capability);
+        }
+        return null;
+    }
+}

src/main/java/nl/requios/effortlessbuilding/gui/SettingsGui.java

@@ -1,158 +1,50 @@
 package nl.requios.effortlessbuilding.gui;
 
-import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.GuiButton;
 import net.minecraft.client.gui.GuiScreen;
-import net.minecraft.client.gui.GuiTextField;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
-import net.minecraftforge.fml.client.config.GuiCheckBox;
 import nl.requios.effortlessbuilding.Array;
 import nl.requios.effortlessbuilding.BuildSettingsManager;
 import nl.requios.effortlessbuilding.EffortlessBuilding;
 import nl.requios.effortlessbuilding.Mirror;
 import nl.requios.effortlessbuilding.network.BuildSettingsMessage;
 import nl.requios.effortlessbuilding.proxy.ClientProxy;
-import org.lwjgl.input.Keyboard;
 
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
 
 public class SettingsGui extends GuiScreen {
 
-    protected List<GuiTextField> textFieldList = new ArrayList<>();
+    private GuiScrollPane scrollPane;
+    private GuiButton buttonClose;
 
-    protected List<GuiButton> mirrorButtonList = new ArrayList<>();
-    protected List<GuiTextField> mirrorTextFieldList = new ArrayList<>();
-    protected List<GuiTextField> arrayTextFieldList = new ArrayList<>();
-
-    private GuiTextField textMirrorPosX, textMirrorPosY, textMirrorPosZ, textMirrorRadius;
-    private GuiCheckBox buttonMirrorEnabled, buttonMirrorX, buttonMirrorY, buttonMirrorZ;
-    private GuiButton buttonDrawPlanes, buttonDrawLines;
-    private boolean drawPlanes, drawLines;
-    private GuiButton buttonCurrentPosition, buttonClose;
-
-    private GuiCheckBox buttonArrayEnabled;
-    private GuiTextField textArrayOffsetX, textArrayOffsetY, textArrayOffsetZ, textArrayCount;
-
-    private int left, right, top, bottom;
+    private MirrorSettingsGui mirrorSettingsGui;
+    private ArraySettingsGui arraySettingsGui;
 
     @Override
     //Create buttons and labels and add them to buttonList/labelList
     public void initGui() {
         int id = 0;
-        left = width / 2 - 140;
-        right = width / 2 + 140;
-        top = height / 2 - 100;
-        bottom = height / 2 + 100;
 
-        //MIRROR
-        int y = top - 2;
-        buttonMirrorEnabled = new GuiCheckBox(id++, left - 15 + 8, y, "", false);
-        buttonList.add(buttonMirrorEnabled);
+        scrollPane = new GuiScrollPane(this, fontRenderer, 8, height - 30);
 
-        y = top + 18;
-        textMirrorPosX = new GuiTextField(id++, fontRenderer, left + 70, y, 50, 18);
-        textMirrorPosX.setText("0.5");
-        mirrorTextFieldList.add(textMirrorPosX);
+        mirrorSettingsGui = new MirrorSettingsGui(scrollPane);
+        scrollPane.listEntries.add(mirrorSettingsGui);
 
-        textMirrorPosY = new GuiTextField(id++, fontRenderer, left + 140, y, 50, 18);
-        textMirrorPosY.setText("64.5");
-        mirrorTextFieldList.add(textMirrorPosY);
+        arraySettingsGui = new ArraySettingsGui(scrollPane);
+        scrollPane.listEntries.add(arraySettingsGui);
 
-        textMirrorPosZ = new GuiTextField(id++, fontRenderer, left + 210, y, 50, 18);
-        textMirrorPosZ.setText("0.5");
-        mirrorTextFieldList.add(textMirrorPosZ);
+        id = scrollPane.initGui(id, buttonList);
 
-        y = top + 50;
-        buttonMirrorX = new GuiCheckBox(id++, left + 60, y, " X", true);
-        mirrorButtonList.add(buttonMirrorX);
-
-        buttonMirrorY = new GuiCheckBox(id++, left + 100, y, " Y", false);
-        mirrorButtonList.add(buttonMirrorY);
-
-        buttonMirrorZ = new GuiCheckBox(id++, left + 140, y, " Z", false);
-        mirrorButtonList.add(buttonMirrorZ);
-
-        y = top + 47;
-        textMirrorRadius = new GuiTextField(id++, fontRenderer, left + 220, y, 60, 18);
-        textMirrorRadius.setText("50");
-        mirrorTextFieldList.add(textMirrorRadius);
-
-        y = top + 72;
-        buttonCurrentPosition = new GuiButton(id++, left + 5, y, 110, 20, "Set to current pos");
-        mirrorButtonList.add(buttonCurrentPosition);
-
-        buttonDrawLines = new GuiButton(id++, left + 127, y, 70, 20, "Show lines");
-        mirrorButtonList.add(buttonDrawLines);
-
-        buttonDrawPlanes = new GuiButton(id++, left + 209, y, 75, 20, "Show area");
-        mirrorButtonList.add(buttonDrawPlanes);
-
-        //ARRAY
-        y = top + 100;
-        buttonArrayEnabled = new GuiCheckBox(id++, left - 15 + 8, y, "", false);
-        buttonList.add(buttonArrayEnabled);
-
-        y = top + 120;
-        textArrayOffsetX = new GuiTextField(id++, fontRenderer, left + 70, y, 50, 18);
-        textArrayOffsetX.setText("0");
-        arrayTextFieldList.add(textArrayOffsetX);
-
-        textArrayOffsetY = new GuiTextField(id++, fontRenderer, left + 140, y, 50, 18);
-        textArrayOffsetY.setText("0");
-        arrayTextFieldList.add(textArrayOffsetY);
-
-        textArrayOffsetZ = new GuiTextField(id++, fontRenderer, left + 210, y, 50, 18);
-        textArrayOffsetZ.setText("0");
-        arrayTextFieldList.add(textArrayOffsetZ);
-
-        y = top + 150;
-        textArrayCount = new GuiTextField(id++, fontRenderer, left + 55, y, 50, 18);
-        textArrayCount.setText("5");
-        arrayTextFieldList.add(textArrayCount);
-
-        //CLOSE
-        y = height - 40;
+        //Close button
+        int y = height - 26;
         buttonClose = new GuiButton(id++, width / 2 - 100, y, "Close");
         buttonList.add(buttonClose);
 
-        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(mc.player);
-        if (buildSettings != null) {
-            //MIRROR
-            Mirror.MirrorSettings m = buildSettings.getMirrorSettings();
-            buttonMirrorEnabled.setIsChecked(m.enabled);
-            textMirrorPosX.setText(String.valueOf(m.position.x));
-            textMirrorPosY.setText(String.valueOf(m.position.y));
-            textMirrorPosZ.setText(String.valueOf(m.position.z));
-            buttonMirrorX.setIsChecked(m.mirrorX);
-            buttonMirrorY.setIsChecked(m.mirrorY);
-            buttonMirrorZ.setIsChecked(m.mirrorZ);
-            textMirrorRadius.setText(String.valueOf(m.radius));
-            drawLines = m.drawLines;
-            drawPlanes = m.drawPlanes;
-            buttonDrawLines.displayString = drawLines ? "Hide lines" : "Show lines";
-            buttonDrawPlanes.displayString = drawPlanes ? "Hide area" : "Show area";
-
-            //ARRAY
-            Array.ArraySettings a = buildSettings.getArraySettings();
-            buttonArrayEnabled.setIsChecked(a.enabled);
-            textArrayOffsetX.setText(String.valueOf(a.offset.getX()));
-            textArrayOffsetY.setText(String.valueOf(a.offset.getY()));
-            textArrayOffsetZ.setText(String.valueOf(a.offset.getZ()));
-            textArrayCount.setText(String.valueOf(a.count));
-        }
-
-        buttonList.addAll(mirrorButtonList);
-        textFieldList.addAll(mirrorTextFieldList);
-        textFieldList.addAll(arrayTextFieldList);
     }
 
     @Override
     //Process general logic, i.e. hide buttons
     public void updateScreen() {
-        textFieldList.forEach(GuiTextField::updateCursorCounter);
+        scrollPane.updateScreen();
     }
 
     @Override
@@ -161,154 +53,77 @@ public class SettingsGui extends GuiScreen {
     public void drawScreen(int mouseX, int mouseY, float partialTicks) {
         this.drawDefaultBackground();
 
-        int y = top;
-        int offset = 8;
-
-        buttonMirrorEnabled.drawButton(this.mc, mouseX, mouseY, partialTicks);
-        if (buttonMirrorEnabled.isChecked()) {
-            fontRenderer.drawString("Mirror enabled", left + offset, y, 0xFFFFFF, true);
-
-            y = top + 18 + 5;
-            fontRenderer.drawString("Position", left + offset, y, 0xFFFFFF, true);
-            fontRenderer.drawString("X", left + 50 + offset, y, 0xFFFFFF, true);
-            fontRenderer.drawString("Y", left + 120 + offset, y, 0xFFFFFF, true);
-            fontRenderer.drawString("Z", left + 190 + offset, y, 0xFFFFFF, true);
-
-            y = top + 52;
-            fontRenderer.drawString("Direction", left + offset, y, 0xFFFFFF, true);
-            fontRenderer.drawString("Size", left + 190, y, 0xFFFFFF, true);
-
-            mirrorButtonList.forEach(button -> button.drawButton(this.mc, mouseX, mouseY, partialTicks));
-            mirrorTextFieldList.forEach(textField -> textField.drawTextBox());
-        } else {
-            fontRenderer.drawString("Mirror disabled", left + offset, y, 0x999999, true);
-        }
-
-        y = top + 100 + 2;
-        buttonArrayEnabled.drawButton(this.mc, mouseX, mouseY, partialTicks);
-        if (buttonArrayEnabled.isChecked()) {
-            fontRenderer.drawString("Array enabled", left + offset, y, 0xFFFFFF, true);
-
-            y = top + 120 + 5;
-            fontRenderer.drawString("Offset", left + offset, y, 0xFFFFFF, true);
-            fontRenderer.drawString("X", left + 50 + offset, y, 0xFFFFFF, true);
-            fontRenderer.drawString("Y", left + 120 + offset, y, 0xFFFFFF, true);
-            fontRenderer.drawString("Z", left + 190 + offset, y, 0xFFFFFF, true);
-
-            y = top + 150 + 5;
-            fontRenderer.drawString("Count", left + offset, y, 0xFFFFFF, true);
-
-            arrayTextFieldList.forEach(textField -> textField.drawTextBox());
-        } else {
-            fontRenderer.drawString("Array disabled", left + offset, y, 0x999999, true);
-        }
+        scrollPane.drawScreen(mouseX, mouseY, partialTicks);
 
         buttonClose.drawButton(this.mc, mouseX, mouseY, partialTicks);
+
+        scrollPane.drawTooltip(this, mouseX, mouseY);
     }
 
     @Override
     protected void keyTyped(char typedChar, int keyCode) throws IOException {
         super.keyTyped(typedChar, keyCode);
-        if (Character.isDigit(typedChar) || typedChar == '.' || typedChar == '-' || keyCode == Keyboard.KEY_BACK || keyCode == Keyboard.KEY_DELETE) {
-            for (GuiTextField textField : textFieldList) {
-                if (textField.isFocused()) {
-                    textField.textboxKeyTyped(typedChar, keyCode);
-                }
-            }
-        }
+        scrollPane.keyTyped(typedChar, keyCode);
         if (keyCode == ClientProxy.keyBindings[0].getKeyCode()) {
-            Minecraft.getMinecraft().player.closeScreen();
+            mc.player.closeScreen();
         }
     }
 
     @Override
     protected void mouseClicked(int mouseX, int mouseY, int mouseButton) throws IOException {
         super.mouseClicked(mouseX, mouseY, mouseButton);
-        textFieldList.forEach(textField -> textField.mouseClicked(mouseX, mouseY, mouseButton));
+        scrollPane.mouseClicked(mouseX, mouseY, mouseButton);
     }
 
     @Override
-    protected void actionPerformed(GuiButton button) throws IOException {
+    protected void mouseReleased(int mouseX, int mouseY, int state) {
+        if (state != 0 || !scrollPane.mouseReleased(mouseX, mouseY, state))
+        {
+            super.mouseReleased(mouseX, mouseY, state);
+        }
+    }
+
+    @Override
+    public void handleMouseInput() throws IOException {
+        super.handleMouseInput();
+        scrollPane.handleMouseInput();
+
+        //Scrolling numbers
+//        int mouseX = Mouse.getEventX() * this.width / this.mc.displayWidth;
+//        int mouseY = this.height - Mouse.getEventY() * this.height / this.mc.displayHeight - 1;
+//        numberFieldList.forEach(numberField -> numberField.handleMouseInput(mouseX, mouseY));
+    }
+
+    @Override
+    protected void actionPerformed(GuiButton button) {
         //check what button and action type (left/right click)
         if (button == buttonClose) {
             mc.player.closeScreen();
         }
-        if (button == buttonCurrentPosition) {
-            Vec3d pos = new Vec3d(Math.floor(mc.player.posX) + 0.5, Math.floor(mc.player.posY) + 0.5, Math.floor(mc.player.posZ) + 0.5);
-            textMirrorPosX.setText(String.valueOf(pos.x));
-            textMirrorPosY.setText(String.valueOf(pos.y));
-            textMirrorPosZ.setText(String.valueOf(pos.z));
-        }
-        if (button == buttonDrawLines) {
-            drawLines = !drawLines;
-            buttonDrawLines.displayString = drawLines ? "Hide lines" : "Show lines";
-        }
-        if (button == buttonDrawPlanes) {
-            drawPlanes = !drawPlanes;
-            buttonDrawPlanes.displayString = drawPlanes ? "Hide area" : "Show area";
-        }
+        scrollPane.actionPerformed(button);
     }
 
     @Override
     public void onGuiClosed() {
+        scrollPane.onGuiClosed();
+
         //save everything
-
-        //MIRROR
-        boolean mirrorEnabled = buttonMirrorEnabled.isChecked();
-
-        Vec3d mirrorPos = new Vec3d(0.5, 64.5, 0.5);
-        try {
-            mirrorPos = new Vec3d(Double.parseDouble(textMirrorPosX.getText()), Double.parseDouble(textMirrorPosY.getText()), Double.parseDouble(textMirrorPosZ.getText()));
-        } catch (NumberFormatException | NullPointerException ex) {
-            EffortlessBuilding.log(Minecraft.getMinecraft().player, "Mirror position not valid.", true);
-            EffortlessBuilding.log("Mirror position not valid. Resetting to default.");
-        }
-
-        boolean mirrorX = buttonMirrorX.isChecked();
-        boolean mirrorY = buttonMirrorY.isChecked();
-        boolean mirrorZ = buttonMirrorZ.isChecked();
-
-        int mirrorRadius = 50;
-        try {
-            mirrorRadius = Math.min(Integer.parseInt(textMirrorRadius.getText()), Mirror.MAX_RADIUS);
-        } catch (NumberFormatException | NullPointerException ex) {
-            EffortlessBuilding.log(Minecraft.getMinecraft().player, "Mirror radius not valid.", true);
-            EffortlessBuilding.log("Mirror radius not valid. Resetting to default.");
-        }
-        mirrorRadius = Math.max(1, mirrorRadius);
-        mirrorRadius = Math.min(Mirror.MAX_RADIUS, mirrorRadius);
-
-        Mirror.MirrorSettings m = new Mirror.MirrorSettings(mirrorEnabled, mirrorPos, mirrorX, mirrorY, mirrorZ, mirrorRadius, drawLines, drawPlanes);
-
-        //ARRAY
-        boolean arrayEnabled = buttonArrayEnabled.isChecked();
-        BlockPos arrayOffset = new BlockPos(0, 0, 0);
-        try {
-            arrayOffset = new BlockPos(Integer.parseInt(textArrayOffsetX.getText()), Integer.parseInt(textArrayOffsetY.getText()), Integer.parseInt(textArrayOffsetZ.getText()));
-        } catch (NumberFormatException | NullPointerException ex) {
-            EffortlessBuilding.log(Minecraft.getMinecraft().player, "Array offset not valid.", true);
-            EffortlessBuilding.log("Array offset not valid. Resetting to default.");
-        }
-
-        int arrayCount = 5;
-        try {
-            arrayCount = Integer.parseInt(textArrayCount.getText());
-        } catch (NumberFormatException | NullPointerException ex) {
-            EffortlessBuilding.log(Minecraft.getMinecraft().player, "Array count not valid.", true);
-            EffortlessBuilding.log("Array count not valid. Resetting to default.");
-        }
-        arrayCount = Math.max(1, arrayCount);
-        arrayCount = Math.min(Array.MAX_COUNT, arrayCount);
-
-        Array.ArraySettings a = new Array.ArraySettings(arrayEnabled, arrayOffset, arrayCount);
+        Mirror.MirrorSettings m = mirrorSettingsGui.getMirrorSettings();
+        Array.ArraySettings a = arraySettingsGui.getArraySettings();
 
         BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(mc.player);
         if (buildSettings == null) buildSettings = new BuildSettingsManager.BuildSettings();
         buildSettings.setMirrorSettings(m);
         buildSettings.setArraySettings(a);
+
+        //Sanitize
+        String error = BuildSettingsManager.sanitize(buildSettings, mc.player);
+        if (!error.isEmpty()) EffortlessBuilding.log(mc.player, error);
+
         BuildSettingsManager.setBuildSettings(mc.player, buildSettings);
 
         //Send to server
         EffortlessBuilding.packetHandler.sendToServer(new BuildSettingsMessage(buildSettings));
     }
+
 }

src/main/java/nl/requios/effortlessbuilding/helper/RenderHelper.java

@@ -0,0 +1,407 @@
+package nl.requios.effortlessbuilding.helper;
+
+import com.google.common.collect.Maps;
+import net.minecraft.block.Block;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.*;
+import net.minecraft.client.renderer.texture.TextureMap;
+import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.item.ItemStack;
+import net.minecraft.item.ItemTool;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.SoundCategory;
+import net.minecraft.util.SoundEvent;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.RayTraceResult;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.IWorldEventListener;
+import net.minecraft.world.World;
+import net.minecraftforge.client.event.RenderWorldLastEvent;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.relauncher.Side;
+import nl.requios.effortlessbuilding.*;
+import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL14;
+import org.lwjgl.util.Color;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+@Mod.EventBusSubscriber(Side.CLIENT)
+public class RenderHelper implements IWorldEventListener {
+
+    private static final Color colorX = new Color(255, 72, 52);
+    private static final Color colorY = new Color(67, 204, 51);
+    private static final Color colorZ = new Color(52, 247, 255);
+    private static final int lineAlpha = 200;
+    private static final int planeAlpha = 75;
+    private static final Vec3d epsilon = new Vec3d(0.001, 0.001, 0.001); //prevents z-fighting
+
+    private static List<BlockPos> previousCoordinates;
+
+    private static void begin(float partialTicks) {
+        EntityPlayer player = Minecraft.getMinecraft().player;
+        double playerX = player.prevPosX + (player.posX - player.prevPosX) * partialTicks;
+        double playerY = player.prevPosY + (player.posY - player.prevPosY) * partialTicks;
+        double playerZ = player.prevPosZ + (player.posZ - player.prevPosZ) * partialTicks;
+        Vec3d playerPos = new Vec3d(playerX, playerY, playerZ);
+
+        GL11.glPushMatrix();
+        GL11.glTranslated(-playerPos.x, -playerPos.y, -playerPos.z);
+
+        GL11.glDepthMask(false);
+    }
+
+    private static void beginLines() {
+        GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
+        GL11.glDisable(GL11.GL_CULL_FACE);
+        GL11.glDisable(GL11.GL_LIGHTING);
+        GL11.glDisable(GL11.GL_TEXTURE_2D);
+
+        GL11.glEnable(GL11.GL_BLEND);
+        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
+
+        GL11.glLineWidth(2);
+    }
+
+    private static void endLines() {
+        GL11.glPopAttrib();
+    }
+
+    private static void beginBlockPreviews() {
+        GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
+        GL11.glEnable(GL11.GL_CULL_FACE);
+        GL11.glEnable(GL11.GL_TEXTURE_2D);
+        Minecraft.getMinecraft().renderEngine.bindTexture(TextureMap.LOCATION_BLOCKS_TEXTURE);
+        GlStateManager.enableBlend();
+        GlStateManager.blendFunc(GL11.GL_CONSTANT_ALPHA, GL11.GL_ONE_MINUS_CONSTANT_ALPHA);
+        GL14.glBlendColor(1F, 1F, 1F, 0.8f);
+    }
+
+    private static void endBlockPreviews() {
+        GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
+        GlStateManager.disableBlend();
+        GL11.glPopAttrib();
+    }
+
+    private static void end() {
+        GL11.glDepthMask(true);
+        GL11.glPopMatrix();
+    }
+
+    private static void renderBlockPreview(BlockRendererDispatcher dispatcher, BlockPos blockPos, IBlockState blockState) {
+        GlStateManager.pushMatrix();
+        GlStateManager.translate(blockPos.getX(), blockPos.getY(), blockPos.getZ());
+        GlStateManager.rotate(-90.0F, 0.0F, 1.0F, 0.0F);
+        GlStateManager.translate(-0.005f, -0.005f, 0.005f);
+        GlStateManager.scale(1.01f, 1.01f, 1.01f);
+        dispatcher.renderBlockBrightness(blockState, 0.85f);
+        GlStateManager.popMatrix();
+    }
+
+    public static void renderBlockOutline(BlockPos pos) {
+        renderBlockOutline(pos, pos);
+    }
+
+    //Renders outline. Pos1 has to be minimal x,y,z and pos2 maximal x,y,z
+    public static void renderBlockOutline(BlockPos pos1, BlockPos pos2) {
+        GL11.glLineWidth(2);
+
+        AxisAlignedBB aabb = new AxisAlignedBB(pos1, pos2.add(1, 1, 1)).grow(0.0020000000949949026);
+
+        RenderGlobal.drawSelectionBoundingBox(aabb, 0f, 0f, 0f, 0.4f);
+    }
+
+    @SubscribeEvent
+    public static void onRender(RenderWorldLastEvent event) {
+        EntityPlayer player = Minecraft.getMinecraft().player;
+        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(player);
+
+        begin(event.getPartialTicks());
+
+        //Mirror lines and areas
+        beginLines();
+        Mirror.MirrorSettings m = buildSettings.getMirrorSettings();
+        if (m != null && m.enabled && (m.mirrorX || m.mirrorY || m.mirrorZ))
+        {
+            Vec3d pos = m.position.add(epsilon);
+            int radius = m.radius;
+
+            if (m.mirrorX)
+            {
+                Vec3d posA = new Vec3d(pos.x, pos.y - radius, pos.z - radius);
+                Vec3d posB = new Vec3d(pos.x, pos.y + radius, pos.z + radius);
+
+                drawMirrorPlane(posA, posB, colorX, m.drawLines, m.drawPlanes);
+            }
+            if (m.mirrorY)
+            {
+                Vec3d posA = new Vec3d(pos.x - radius, pos.y, pos.z - radius);
+                Vec3d posB = new Vec3d(pos.x + radius, pos.y, pos.z + radius);
+
+                drawMirrorPlaneY(posA, posB, colorY, m.drawLines, m.drawPlanes);
+            }
+            if (m.mirrorZ)
+            {
+                Vec3d posA = new Vec3d(pos.x - radius, pos.y - radius, pos.z);
+                Vec3d posB = new Vec3d(pos.x + radius, pos.y + radius, pos.z);
+
+                drawMirrorPlane(posA, posB, colorZ, m.drawLines, m.drawPlanes);
+            }
+
+            //Draw axis coordinated colors if two or more axes are enabled
+            //(If only one is enabled the lines are that planes color)
+            if (m.drawLines && ((m.mirrorX && m.mirrorY) || (m.mirrorX && m.mirrorZ) || (m.mirrorY && m.mirrorZ)))
+            {
+                drawMirrorLines(m);
+            }
+        }
+        endLines();
+
+        //Render block previews
+        RayTraceResult objectMouseOver = Minecraft.getMinecraft().objectMouseOver;
+        //Checking for null is necessary! Even in vanilla when looking down ladders it is occasionally null (instead of Type MISS)
+        if (objectMouseOver != null && objectMouseOver.typeOfHit == RayTraceResult.Type.BLOCK)
+        {
+            beginBlockPreviews();
+            BlockRendererDispatcher dispatcher = Minecraft.getMinecraft().getBlockRendererDispatcher();
+            BlockPos startPos = objectMouseOver.getBlockPos();
+
+            //Check if tool (or none) in hand
+            ItemStack mainhand = player.getHeldItemMainhand();
+            boolean toolInHand = mainhand.isEmpty() || (!mainhand.isEmpty() && mainhand.getItem() instanceof ItemTool);
+            boolean replaceable =
+                    player.world.getBlockState(startPos).getBlock().isReplaceable(player.world, startPos);
+            if (!buildSettings.doQuickReplace() && !toolInHand && !replaceable) {
+                startPos = startPos.offset(objectMouseOver.sideHit);
+            }
+
+            //Get under tall grass and other replaceable blocks
+            if (buildSettings.doQuickReplace() && !toolInHand && replaceable) {
+                startPos = startPos.down();
+            }
+
+            //get coordinates
+            List<BlockPos> newCoordinates = BuildModifiers.findCoordinates(player, startPos);
+
+            if (BuildModifiers.isEnabled(buildSettings, startPos) || BuildConfig.visuals.alwaysShowBlockPreview) {
+                //check if they are different from previous
+                if (!BuildModifiers.compareCoordinates(previousCoordinates, newCoordinates)) {
+                    previousCoordinates = newCoordinates;
+                    //if so, renew randomness of randomizer bag
+                    ItemRandomizerBag.renewRandomness();
+                }
+
+                Vec3d hitVec = objectMouseOver.hitVec;
+                hitVec = new Vec3d(Math.abs(hitVec.x - ((int) hitVec.x)), Math.abs(hitVec.y - ((int) hitVec.y)),
+                        Math.abs(hitVec.z - ((int) hitVec.z)));
+                List<ItemStack> itemStacks = new ArrayList<>();
+                List<IBlockState> blockStates = BuildModifiers.findBlockStates(player, startPos, hitVec, objectMouseOver.sideHit, itemStacks);
+
+                //check if valid blockstates
+                if (blockStates.size() != 0 && newCoordinates.size() == blockStates.size()) {
+                    for (int i = newCoordinates.size() - 1; i >= 0; i--) {
+                        BlockPos blockPos = newCoordinates.get(i);
+                        IBlockState blockState = blockStates.get(i);
+                        ItemStack itemstack = itemStacks.get(i);
+                        //Check if can place
+                        if (!itemstack.isEmpty() && SurvivalHelper.canPlayerEdit(player, player.world, blockPos, itemstack) &&
+                            SurvivalHelper.mayPlace(player.world, Block.getBlockFromItem(itemstack.getItem()), blockState, blockPos, true, EnumFacing.UP, player) &&
+                            SurvivalHelper.canReplace(player.world, player, blockPos)) {
+                            renderBlockPreview(dispatcher, blockPos, blockState);
+                        }
+                    }
+                }
+            }
+            endBlockPreviews();
+
+            beginLines();
+            //Draw outlines if tool in hand
+            if (toolInHand) {
+                for (int i = 1; i < newCoordinates.size(); i++) {
+                    BlockPos coordinate = newCoordinates.get(i);
+
+                    IBlockState blockState = player.world.getBlockState(coordinate);
+                    if (!blockState.getBlock().isAir(blockState, player.world, coordinate) &&
+                        SurvivalHelper.canBreak(player.world, player, coordinate)) {
+                        renderBlockOutline(coordinate);
+                    }
+                }
+            }
+            endLines();
+        }
+
+        end();
+    }
+
+
+    //----Mirror----
+
+    public static void drawMirrorPlane(Vec3d posA, Vec3d posB, Color c, boolean drawLines, boolean drawPlanes) {
+
+        GL11.glColor4d(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha);
+        Tessellator tessellator = Tessellator.getInstance();
+        BufferBuilder bufferBuilder = tessellator.getBuffer();
+
+        if (drawPlanes) {
+            bufferBuilder.begin(GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION_COLOR);
+
+            bufferBuilder.pos(posA.x, posA.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
+            bufferBuilder.pos(posA.x, posB.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
+            bufferBuilder.pos(posB.x, posA.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
+            bufferBuilder.pos(posB.x, posB.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
+
+            tessellator.draw();
+        }
+
+        if (drawLines) {
+            Vec3d middle = posA.add(posB).scale(0.5);
+            bufferBuilder.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION_COLOR);
+
+            bufferBuilder.pos(posA.x, middle.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
+            bufferBuilder.pos(posB.x, middle.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
+            bufferBuilder.pos(middle.x, posA.y, middle.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
+            bufferBuilder.pos(middle.x, posB.y, middle.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
+
+            tessellator.draw();
+        }
+    }
+
+    public static void drawMirrorPlaneY(Vec3d posA, Vec3d posB, Color c, boolean drawLines, boolean drawPlanes) {
+
+        GL11.glColor4d(c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+        Tessellator tessellator = Tessellator.getInstance();
+        BufferBuilder bufferBuilder = tessellator.getBuffer();
+
+        if (drawPlanes) {
+            bufferBuilder.begin(GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION_COLOR);
+
+            bufferBuilder.pos(posA.x, posA.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
+            bufferBuilder.pos(posA.x, posA.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
+            bufferBuilder.pos(posB.x, posA.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
+            bufferBuilder.pos(posB.x, posA.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), planeAlpha).endVertex();
+
+            tessellator.draw();
+        }
+
+        if (drawLines) {
+            Vec3d middle = posA.add(posB).scale(0.5);
+            bufferBuilder.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION_COLOR);
+
+            bufferBuilder.pos(middle.x, middle.y, posA.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
+            bufferBuilder.pos(middle.x, middle.y, posB.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
+            bufferBuilder.pos(posA.x, middle.y, middle.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
+            bufferBuilder.pos(posB.x, middle.y, middle.z).color(c.getRed(), c.getGreen(), c.getBlue(), lineAlpha).endVertex();
+
+            tessellator.draw();
+        }
+    }
+
+    public static void drawMirrorLines(Mirror.MirrorSettings m) {
+
+        Vec3d pos = m.position.add(epsilon);
+
+        GL11.glColor4d(100, 100, 100, 255);
+        GL11.glLineWidth(2);
+        Tessellator tessellator = Tessellator.getInstance();
+        BufferBuilder bufferBuilder = tessellator.getBuffer();
+
+        bufferBuilder.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION_COLOR);
+
+        bufferBuilder.pos(pos.x - m.radius, pos.y, pos.z).color(colorX.getRed(), colorX.getGreen(), colorX.getBlue(), lineAlpha).endVertex();
+        bufferBuilder.pos(pos.x + m.radius, pos.y, pos.z).color(colorX.getRed(), colorX.getGreen(), colorX.getBlue(), lineAlpha).endVertex();
+        bufferBuilder.pos(pos.x, pos.y - m.radius, pos.z).color(colorY.getRed(), colorY.getGreen(), colorY.getBlue(), lineAlpha).endVertex();
+        bufferBuilder.pos(pos.x, pos.y + m.radius, pos.z).color(colorY.getRed(), colorY.getGreen(), colorY.getBlue(), lineAlpha).endVertex();
+        bufferBuilder.pos(pos.x, pos.y, pos.z - m.radius).color(colorZ.getRed(), colorZ.getGreen(), colorZ.getBlue(), lineAlpha).endVertex();
+        bufferBuilder.pos(pos.x, pos.y, pos.z + m.radius).color(colorZ.getRed(), colorZ.getGreen(), colorZ.getBlue(), lineAlpha).endVertex();
+
+        tessellator.draw();
+    }
+
+    //IWORLDEVENTLISTENER IMPLEMENTATION
+    @Override
+    public void notifyBlockUpdate(World worldIn, BlockPos pos, IBlockState oldState, IBlockState newState, int flags) {
+
+    }
+
+    @Override
+    public void notifyLightSet(BlockPos pos) {
+
+    }
+
+    @Override
+    public void markBlockRangeForRenderUpdate(int x1, int y1, int z1, int x2, int y2, int z2) {
+
+    }
+
+    @Override
+    public void playSoundToAllNearExcept(@Nullable EntityPlayer player, SoundEvent soundIn, SoundCategory category,
+                                         double x, double y, double z, float volume, float pitch) {
+
+    }
+
+    @Override
+    public void playRecord(SoundEvent soundIn, BlockPos pos) {
+
+    }
+
+    @Override
+    public void spawnParticle(int particleID, boolean ignoreRange, double xCoord, double yCoord, double zCoord,
+                              double xSpeed, double ySpeed, double zSpeed, int... parameters) {
+
+    }
+
+    @Override
+    public void spawnParticle(int id, boolean ignoreRange, boolean p_190570_3_, double x, double y, double z,
+                              double xSpeed, double ySpeed, double zSpeed, int... parameters) {
+
+    }
+
+    @Override
+    public void onEntityAdded(Entity entityIn) {
+
+    }
+
+    @Override
+    public void onEntityRemoved(Entity entityIn) {
+
+    }
+
+    @Override
+    public void broadcastSound(int soundID, BlockPos pos, int data) {
+
+    }
+
+    @Override
+    public void playEvent(EntityPlayer player, int type, BlockPos blockPosIn, int data) {
+
+    }
+
+    //Sends breaking progress for all coordinates to renderglobal, so all blocks get visually broken
+    @Override
+    public void sendBlockBreakProgress(int breakerId, BlockPos pos, int progress) {
+        Minecraft mc = Minecraft.getMinecraft();
+
+        BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(mc.player);
+        if (!BuildModifiers.isEnabled(buildSettings, pos)) return;
+
+        List<BlockPos> coordinates = BuildModifiers.findCoordinates(mc.player, pos);
+        for (int i = 1; i < coordinates.size(); i++) {
+            BlockPos coordinate = coordinates.get(i);
+            if (SurvivalHelper.canBreak(mc.world, mc.player, coordinate)) {
+                //Send i as entity id because only one block can be broken per id
+                //Unless i happens to be the player id, then take something else
+                int fakeId = mc.player.getEntityId() != i ? i : coordinates.size();
+                mc.renderGlobal.sendBlockBreakProgress(fakeId, coordinate, progress);
+            }
+        }
+    }
+}

src/main/java/nl/requios/effortlessbuilding/helper/SurvivalHelper.java

@@ -0,0 +1,219 @@
+package nl.requios.effortlessbuilding.helper;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockLiquid;
+import net.minecraft.block.SoundType;
+import net.minecraft.block.material.Material;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.enchantment.EnchantmentHelper;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.init.Blocks;
+import net.minecraft.init.Enchantments;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemBlock;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.SoundCategory;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.IBlockAccess;
+import net.minecraft.world.World;
+import net.minecraftforge.items.IItemHandler;
+import net.minecraftforge.items.ItemHandlerHelper;
+import nl.requios.effortlessbuilding.BuildSettingsManager;
+import nl.requios.effortlessbuilding.EffortlessBuilding;
+import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.util.List;
+
+public class SurvivalHelper {
+
+    //Used for all placing of blocks in this mod.
+    //Checks if area is loaded, if player has the right permissions, if existing block can be replaced (drops it if so) and consumes an item from the stack.
+    //Based on ItemBlock#onItemUse
+    public static boolean placeBlock(World world, EntityPlayer player, BlockPos pos, IBlockState blockState, ItemStack itemstack, EnumFacing facing, boolean skipCollisionCheck, boolean playSound) {
+        if (!world.isBlockLoaded(pos, true)) return false;
+
+        //Randomizer bag synergy
+        //Find itemstack that belongs to the blockstate
+        if (itemstack.getItem() == EffortlessBuilding.ITEM_RANDOMIZER_BAG) {
+            IItemHandler bagInventory = ItemRandomizerBag.getBagInventory(itemstack);
+            itemstack = ItemRandomizerBag.findStack(bagInventory, Item.getItemFromBlock(blockState.getBlock()));
+        }
+
+        //Check if itemstack is correct
+        if (!(itemstack.getItem() instanceof ItemBlock) || Block.getBlockFromItem(itemstack.getItem()) != blockState.getBlock()) {
+            EffortlessBuilding.log(player, "Cannot (re)place block", true);
+            EffortlessBuilding.log("SurvivalHelper#placeBlock: itemstack " + itemstack.toString() + " does not match blockstate " + blockState.toString());
+            return false;
+        }
+
+        Block block = ((ItemBlock) itemstack.getItem()).getBlock();
+
+        if (!itemstack.isEmpty() && canPlayerEdit(player, world, pos, itemstack) &&
+            mayPlace(world, block, blockState, pos, skipCollisionCheck, facing.getOpposite(), player) &&
+            canReplace(world, player, pos))
+        {
+            //Drop existing block
+            //TODO check if can replace
+            dropBlock(world, player, pos);
+
+            //From ItemBlock#placeBlockAt
+            if (!world.setBlockState(pos, blockState, 11)) return false;
+
+            IBlockState state = world.getBlockState(pos);
+            if (state.getBlock() == block)
+            {
+                ((ItemBlock) itemstack.getItem()).setTileEntityNBT(world, player, pos, itemstack);
+                block.onBlockPlacedBy(world, pos, state, player, itemstack);
+
+//                if (player instanceof EntityPlayerMP)
+//                    CriteriaTriggers.PLACED_BLOCK.trigger((EntityPlayerMP)player, pos, itemstack);
+            }
+
+            if (playSound) {
+                SoundType soundtype = state.getBlock().getSoundType(state, world, pos, player);
+                world.playSound(null, pos, soundtype.getPlaceSound(), SoundCategory.BLOCKS, (soundtype.getVolume() + 1.0F) / 2.0F, soundtype.getPitch() * 0.8F);
+            }
+
+            if (!player.isCreative() && Block.getBlockFromItem(itemstack.getItem()) == block) {
+                itemstack.shrink(1);
+            }
+
+            return true;
+        }
+        return false;
+    }
+
+    //Used for all breaking of blocks in this mod.
+    //Checks if area is loaded, if appropriate tool is used in survival mode, and drops the block directly into the players inventory
+    public static boolean breakBlock(World world, EntityPlayer player, BlockPos pos) {
+        if (!world.isBlockLoaded(pos, false)) return false;
+
+        //Check if can break
+        if (canBreak(world, player, pos))
+        {
+            //Drop existing block
+            dropBlock(world, player, pos);
+
+            //Damage tool
+            player.getHeldItemMainhand().onBlockDestroyed(world, world.getBlockState(pos), pos, player);
+
+            world.setBlockToAir(pos);
+            return true;
+        }
+        return false;
+    }
+
+    //Can break using held tool? (or in creative)
+    public static boolean canBreak(World world, EntityPlayer player, BlockPos pos) {
+        IBlockState blockState = world.getBlockState(pos);
+        if (blockState.getBlock() instanceof BlockLiquid) return false;
+
+        if (player.isCreative()) return true;
+
+        return canHarvestBlock(blockState.getBlock(), player, world, pos);
+    }
+
+    //From ForgeHooks#canHarvestBlock
+    public static boolean canHarvestBlock(@Nonnull Block block, @Nonnull EntityPlayer player, @Nonnull IBlockAccess world, @Nonnull BlockPos pos)
+    {
+        IBlockState state = world.getBlockState(pos);
+        state = state.getBlock().getActualState(state, world, pos);
+        if (state.getMaterial().isToolNotRequired())
+        {
+            return true;
+        }
+
+        ItemStack stack = player.getHeldItemMainhand();
+        String tool = block.getHarvestTool(state);
+        if (stack.isEmpty() || tool == null)
+        {
+            return player.canHarvestBlock(state);
+        }
+
+        if (stack.getItemDamage() >= stack.getMaxDamage()) return false;
+
+        int toolLevel = stack.getItem().getHarvestLevel(stack, tool, player, state);
+        if (toolLevel < 0)
+        {
+            return player.canHarvestBlock(state);
+        }
+
+        return toolLevel >= block.getHarvestLevel(state);
+    }
+
+    //Can be harvested with hand? (or in creative)
+    public static boolean canReplace(World world, EntityPlayer player, BlockPos pos){
+        if (player.isCreative()) return true;
+
+        IBlockState state = world.getBlockState(pos);
+        state = state.getBlock().getActualState(state, world, pos);
+        if (state.getMaterial().isToolNotRequired()) return true;
+
+        return false;
+    }
+
+    //Gives items directly to player
+    public static void dropBlock(World world, EntityPlayer player, BlockPos pos){
+        if (player.isCreative()) return;
+
+        IBlockState blockState = world.getBlockState(pos);
+
+        int fortune = EnchantmentHelper.getEnchantmentLevel(Enchantments.FORTUNE, player.getHeldItemMainhand());
+        List<ItemStack> drops = blockState.getBlock().getDrops(world, pos, blockState, fortune);
+        for (ItemStack drop : drops)
+        {
+            ItemHandlerHelper.giveItemToPlayer(player, drop);
+        }
+    }
+
+    //From EntityPlayer#canPlayerEdit
+    public static boolean canPlayerEdit(EntityPlayer player, World world, BlockPos pos, ItemStack stack)
+    {
+        if (player.capabilities.allowEdit)
+        {
+            //True in creative and survival mode
+            return true;
+        }
+        else
+        {
+            //Adventure mode
+            Block block = world.getBlockState(pos).getBlock();
+            return stack.canPlaceOn(block) || stack.canEditBlocks();
+        }
+    }
+
+    //From World#mayPlace
+    public static boolean mayPlace(World world, Block blockIn, IBlockState newBlockState, BlockPos pos, boolean skipCollisionCheck, EnumFacing sidePlacedOn, @Nullable Entity placer)
+    {
+        IBlockState iblockstate1 = world.getBlockState(pos);
+        AxisAlignedBB axisalignedbb = skipCollisionCheck ? null : blockIn.getDefaultState().getCollisionBoundingBox(world, pos);
+
+        if (axisalignedbb != Block.NULL_AABB && !world.checkNoEntityCollision(axisalignedbb.offset(pos), placer))
+        {
+            return false;
+        }
+
+        //Check if same block
+        //Necessary otherwise extra items will be dropped
+        if (iblockstate1 == newBlockState) {
+            return false;
+        }
+
+        if (iblockstate1.getMaterial() == Material.CIRCUITS && blockIn == Blocks.ANVIL)
+        {
+            return true;
+        }
+
+        //Check quickreplace
+        if (placer instanceof EntityPlayer && BuildSettingsManager.getBuildSettings(((EntityPlayer) placer)).doQuickReplace()) {
+            return true;
+        }
+
+        return iblockstate1.getBlock().isReplaceable(world, pos) && blockIn.canPlaceBlockOnSide(world, pos, sidePlacedOn);
+    }
+}

src/main/java/nl/requios/effortlessbuilding/inventory/RandomizerBagContainer.java

@@ -1,11 +0,0 @@
-package nl.requios.effortlessbuilding.inventory;
-
-import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.inventory.Container;
-
-public class RandomizerBagContainer extends Container {
-    @Override
-    public boolean canInteractWith(EntityPlayer playerIn) {
-        return false;
-    }
-}

src/main/java/nl/requios/effortlessbuilding/inventory/RandomizerBagGuiContainer.java

@@ -1,15 +0,0 @@
-package nl.requios.effortlessbuilding.inventory;
-
-import net.minecraft.client.gui.inventory.GuiContainer;
-import net.minecraft.inventory.Container;
-
-public class RandomizerBagGuiContainer extends GuiContainer {
-    public RandomizerBagGuiContainer(Container inventorySlotsIn) {
-        super(inventorySlotsIn);
-    }
-
-    @Override
-    protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) {
-
-    }
-}

src/main/java/nl/requios/effortlessbuilding/inventory/RandomizerBagInventory.java

@@ -1,144 +0,0 @@
-package nl.requios.effortlessbuilding.inventory;
-
-import net.minecraft.item.ItemStack;
-import net.minecraft.nbt.NBTTagCompound;
-import net.minecraft.nbt.NBTTagList;
-import net.minecraftforge.items.IItemHandler;
-
-import javax.annotation.Nonnull;
-
-public class RandomizerBagInventory implements IItemHandler {
-
-    //Reference to NBT data
-    private final ItemStack invItem;
-
-    public static final int INV_SIZE = 5;
-
-    private ItemStack[] inventory = new ItemStack[INV_SIZE];
-
-    public RandomizerBagInventory(ItemStack invItem) {
-        this.invItem = invItem;
-
-        if (!invItem.hasTagCompound()) {
-            invItem.setTagCompound(new NBTTagCompound());
-        }
-
-        readFromNBT(invItem.getTagCompound());
-    }
-
-    @Override
-    public int getSlots() {
-        return INV_SIZE;
-    }
-
-    @Nonnull
-    @Override
-    public ItemStack getStackInSlot(int slot) {
-        return inventory[slot];
-    }
-
-    @Nonnull
-    @Override
-    public ItemStack insertItem(int slot, @Nonnull ItemStack stack, boolean simulate) {
-        ItemStack slotStack = getStackInSlot(slot);
-        if (slotStack.getCount() == 0) {
-            setInventorySlotContents(slot, stack);
-            return null;
-        }
-        if (getSlotLimit(slot) - slotStack.getCount() < stack.getCount()) {
-            //Not enough place remaining, split stack
-            slotStack.setCount(getSlotLimit(slot));
-            onInventoryChanged();
-            stack.copy().shrink(getSlotLimit(slot) - slotStack.getCount());
-            //TODO make proper
-            return stack;
-        } else {
-            slotStack.grow(stack.getCount());
-            onInventoryChanged();
-            return null;
-        }
-    }
-
-    @Nonnull
-    @Override
-    public ItemStack extractItem(int slot, int amount, boolean simulate) {
-        ItemStack stack = getStackInSlot(slot);
-        if (stack == null) return stack;
-
-        if (stack.getCount() > amount) {
-            stack = stack.splitStack(amount);
-            onInventoryChanged();
-        } else {
-            setInventorySlotContents(slot, null);
-        }
-        return stack;
-    }
-
-    @Override
-    public int getSlotLimit(int slot) {
-        return 64;
-    }
-
-    public void onInventoryChanged() {
-        for (int i = 0; i < getSlotLimit(0); ++i) {
-            if (getStackInSlot(i) != null && getStackInSlot(i).getCount() == 0) {
-                inventory[i] = null;
-            }
-        }
-
-        writeToNBT(invItem.getTagCompound());
-    }
-
-    public void setInventorySlotContents(int slot, ItemStack stack) {
-        inventory[slot] = stack;
-
-        if (stack != null && stack.getCount() > getSlotLimit(slot)) {
-            stack.setCount(getSlotLimit(slot));
-        }
-
-        // Don't forget this line or your inventory will not be saved!
-        onInventoryChanged();
-    }
-
-    public void readFromNBT(NBTTagCompound compound) {
-        // Gets the custom taglist we wrote to this compound, if any
-        // 1.7.2+ change to compound.getTagList("ItemInventory", Constants.NBT.TAG_COMPOUND);
-        NBTTagList items = compound.getTagList("ItemInventory", 0);
-
-        for (int i = 0; i < items.tagCount(); ++i) {
-            // 1.7.2+ change to items.getCompoundTagAt(i)
-            NBTTagCompound item = items.getCompoundTagAt(i);
-            int slot = item.getInteger("Slot");
-
-            // Just double-checking that the saved slot index is within our inventory array bounds
-            if (slot >= 0 && slot < getSlots()) {
-                inventory[slot] = new ItemStack(item);
-            }
-        }
-    }
-
-    /**
-     * A custom method to write our inventory to an ItemStack's NBT compound
-     */
-    public void writeToNBT(NBTTagCompound tagcompound) {
-        // Create a new NBT Tag List to store itemstacks as NBT Tags
-        NBTTagList items = new NBTTagList();
-
-        for (int i = 0; i < getSlots(); ++i) {
-            // Only write stacks that contain items
-            if (getStackInSlot(i) != null) {
-                // Make a new NBT Tag Compound to write the itemstack and slot index to
-                NBTTagCompound item = new NBTTagCompound();
-                item.setInteger("Slot", i);
-                // Writes the itemstack in slot(i) to the Tag Compound we just made
-                getStackInSlot(i).writeToNBT(item);
-
-                // add the tag compound to our tag list
-                items.appendTag(item);
-            }
-        }
-        // Add the TagList to the ItemStack's Tag Compound with the name "ItemInventory"
-        tagcompound.setTag("ItemInventory", items);
-    }
-
-}

src/main/java/nl/requios/effortlessbuilding/inventory/RandomizerGuiHandler.java

@@ -1,32 +0,0 @@
-package nl.requios.effortlessbuilding.inventory;
-
-import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.world.World;
-import net.minecraftforge.fml.common.network.IGuiHandler;
-import nl.requios.effortlessbuilding.EffortlessBuilding;
-import nl.requios.effortlessbuilding.inventory.RandomizerBagContainer;
-
-import javax.annotation.Nullable;
-
-public class RandomizerGuiHandler implements IGuiHandler {
-    @Nullable
-    @Override
-    public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
-        if (ID == EffortlessBuilding.RANDOMIZER_BAG_GUI) {
-            // Use the player's held item to create the inventory
-            return new RandomizerBagContainer();
-        }
-        return null;
-    }
-
-    @Nullable
-    @Override
-    public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
-        if (ID == EffortlessBuilding.RANDOMIZER_BAG_GUI) {
-            // We have to cast the new container as our custom class
-            // and pass in currently held item for the inventory
-            return new RandomizerBagGuiContainer(new RandomizerBagContainer());
-        }
-        return null;
-    }
-}

src/main/java/nl/requios/effortlessbuilding/item/ItemRandomizerBag.java

@@ -1,56 +1,196 @@
 package nl.requios.effortlessbuilding.item;
 
+import net.minecraft.block.Block;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.client.util.ITooltipFlag;
 import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.util.ActionResult;
 import net.minecraft.util.EnumActionResult;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.TextFormatting;
 import net.minecraft.world.World;
+import net.minecraftforge.common.capabilities.ICapabilityProvider;
+import net.minecraftforge.items.CapabilityItemHandler;
+import net.minecraftforge.items.IItemHandler;
 import nl.requios.effortlessbuilding.EffortlessBuilding;
+import nl.requios.effortlessbuilding.capability.ItemHandlerCapabilityProvider;
+import nl.requios.effortlessbuilding.helper.SurvivalHelper;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.List;
+import java.util.Random;
 
 public class ItemRandomizerBag extends Item {
+    public static final int INV_SIZE = 5;
 
-    public ItemRandomizerBag(){
+    private static long currentSeed = 1337;
+    private static Random rand = new Random(currentSeed);
+
+    public ItemRandomizerBag() {
         this.setRegistryName(EffortlessBuilding.MODID, "randomizer_bag");
         this.setUnlocalizedName(this.getRegistryName().toString());
 
         this.maxStackSize = 1;
-        this.setCreativeTab(CreativeTabs.DECORATIONS);
+        this.setCreativeTab(CreativeTabs.TOOLS);
     }
 
     @Override
-    public EnumActionResult onItemUse(EntityPlayer player, World worldIn, BlockPos pos, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {
+    public EnumActionResult onItemUse(EntityPlayer player, World world, BlockPos pos, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {
 
-        if (worldIn.isRemote) return EnumActionResult.PASS;
-        EffortlessBuilding.log(player, "onItemUse");
-
-        if (player.isSneaking()){
+        if (player.isSneaking()) {
+            if (world.isRemote) return EnumActionResult.SUCCESS;
             //Open inventory
-            player.openGui(EffortlessBuilding.instance, EffortlessBuilding.RANDOMIZER_BAG_GUI, worldIn, 0, 0, 0);
+            player.openGui(EffortlessBuilding.instance, EffortlessBuilding.RANDOMIZER_BAG_GUI, world, 0, 0, 0);
         } else {
-            //Place block
+            if (world.isRemote) return EnumActionResult.SUCCESS;
+            //Use item
+            //Get bag inventory
+            ItemStack bag = player.getHeldItem(hand);
+            IItemHandler bagInventory = getBagInventory(bag);
+            if (bagInventory == null)
+                return EnumActionResult.FAIL;
 
+            ItemStack toPlace = pickRandomStack(bagInventory);
+            if (toPlace.isEmpty()) return EnumActionResult.FAIL;
+
+            //Previously: use onItemUse to place block (no synergy)
+            //bag.setItemDamage(toPlace.getMetadata());
+            //toPlace.onItemUse(player, world, pos, hand, facing, hitX, hitY, hitZ);
+
+            if (!world.getBlockState(pos).getBlock().isReplaceable(world, pos)) {
+                pos = pos.offset(facing);
+            }
+
+            IBlockState blockState = Block.getBlockFromItem(toPlace.getItem()).getStateForPlacement(world, pos, facing,
+                    hitX, hitY, hitZ, toPlace.getMetadata(), player, hand);
+
+            SurvivalHelper.placeBlock(world, player, pos, blockState, toPlace, facing, false, true);
+
+            //Synergy
+            //Works without calling
+//            BlockSnapshot blockSnapshot = new BlockSnapshot(player.world, pos, blockState);
+//            BlockEvent.PlaceEvent placeEvent = new BlockEvent.PlaceEvent(blockSnapshot, blockState, player, hand);
+//            Mirror.onBlockPlaced(placeEvent);
+//            Array.onBlockPlaced(placeEvent);
         }
-        return EnumActionResult.PASS;
+        return EnumActionResult.SUCCESS;
     }
 
     @Override
-    public ActionResult<ItemStack> onItemRightClick(World worldIn, EntityPlayer playerIn, EnumHand handIn) {
-        if (worldIn.isRemote) return new ActionResult<>(EnumActionResult.PASS, playerIn.getHeldItem(handIn));
-        EffortlessBuilding.log(playerIn, "onItemRightClick");
+    public ActionResult<ItemStack> onItemRightClick(World world, EntityPlayer player, EnumHand hand) {
+        ItemStack bag = player.getHeldItem(hand);
 
-        //Open inventory
-        playerIn.openGui(EffortlessBuilding.instance, EffortlessBuilding.RANDOMIZER_BAG_GUI, worldIn, 0, 0, 0);
+        if (player.isSneaking()) {
+            if (world.isRemote) return new ActionResult<>(EnumActionResult.SUCCESS, bag);
+            //Open inventory
+            player.openGui(EffortlessBuilding.instance, EffortlessBuilding.RANDOMIZER_BAG_GUI, world, 0, 0, 0);
+        } else {
+            //Use item
+            //Get bag inventory
+            IItemHandler bagInventory = getBagInventory(bag);
+            if (bagInventory == null)
+                return new ActionResult<>(EnumActionResult.FAIL, bag);
 
-        return new ActionResult<>(EnumActionResult.PASS, playerIn.getHeldItem(handIn));
+            ItemStack toUse = pickRandomStack(bagInventory);
+            if (toUse.isEmpty()) return new ActionResult<>(EnumActionResult.FAIL, bag);
+
+            return toUse.useItemRightClick(world, player, hand);
+        }
+        return new ActionResult<>(EnumActionResult.PASS, bag);
+    }
+
+    /**
+     * Get the inventory of a randomizer bag by checking the capability.
+     *
+     * @param bag
+     * @return
+     */
+    public static IItemHandler getBagInventory(ItemStack bag) {
+        if (!bag.hasCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null)) return null;
+        return bag.getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null);
+    }
+
+    /**
+     * Pick a random slot from the bag. Empty slots will never get chosen.
+     *
+     * @param bagInventory
+     * @return
+     */
+    public static ItemStack pickRandomStack(IItemHandler bagInventory) {
+        //Find how many stacks are non-empty, and save them in a list
+        int nonempty = 0;
+        List<ItemStack> nonEmptyStacks = new ArrayList<>(INV_SIZE);
+        List<Integer> originalSlots = new ArrayList<>(INV_SIZE);
+        for (int i = 0; i < bagInventory.getSlots(); i++) {
+            ItemStack stack = bagInventory.getStackInSlot(i);
+            if (!stack.isEmpty()) {
+                nonempty++;
+                nonEmptyStacks.add(stack);
+                originalSlots.add(i);
+            }
+        }
+
+        if (nonEmptyStacks.size() != originalSlots.size())
+            throw new Error("NonEmptyStacks and OriginalSlots not same size");
+
+        if (nonempty == 0) return ItemStack.EMPTY;
+
+        //Pick random slot
+        int randomSlot = rand.nextInt(nonempty);
+        if (randomSlot < 0 || randomSlot > bagInventory.getSlots()) return ItemStack.EMPTY;
+
+        int originalSlot = originalSlots.get(randomSlot);
+        if (originalSlot < 0 || originalSlot > bagInventory.getSlots()) return ItemStack.EMPTY;
+
+        return bagInventory.getStackInSlot(originalSlot);
+    }
+
+    public static ItemStack findStack(IItemHandler bagInventory, Item item) {
+        for (int i = 0; i < bagInventory.getSlots(); i++) {
+            ItemStack stack = bagInventory.getStackInSlot(i);
+            if (!stack.isEmpty() && stack.getItem() == item) {
+                return stack;
+            }
+        }
+        return ItemStack.EMPTY;
     }
 
     @Override
     public int getMaxItemUseDuration(ItemStack stack) {
         return 1;
     }
+
+    @Nullable
+    @Override
+    public ICapabilityProvider initCapabilities(ItemStack stack, @Nullable NBTTagCompound nbt) {
+        return new ItemHandlerCapabilityProvider();
+    }
+
+    @Override
+    public void addInformation(ItemStack stack, @Nullable World world, List<String> tooltip, ITooltipFlag flag) {
+        tooltip.add(TextFormatting.BLUE + "Rightclick" + TextFormatting.GRAY + " to place a random block");
+        tooltip.add(TextFormatting.BLUE + "Sneak + rightclick" + TextFormatting.GRAY + " to open inventory");
+    }
+
+    @Override
+    public String getUnlocalizedName() {
+        return super.getUnlocalizedName();
+    }
+
+    public static void resetRandomness() {
+        rand.setSeed(currentSeed);
+    }
+
+    public static void renewRandomness() {
+        currentSeed = Calendar.getInstance().getTimeInMillis();
+        rand.setSeed(currentSeed);
+    }
 }

src/main/java/nl/requios/effortlessbuilding/network/BlockPlacedMessage.java

@@ -4,29 +4,34 @@ import io.netty.buffer.ByteBuf;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.RayTraceResult;
+import net.minecraft.util.math.Vec3d;
 import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
 import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
 import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;
 import net.minecraftforge.fml.relauncher.Side;
-import nl.requios.effortlessbuilding.QuickReplace;
+import nl.requios.effortlessbuilding.BuildModifiers;
+import nl.requios.effortlessbuilding.EffortlessBuilding;
 import nl.requios.effortlessbuilding.proxy.ClientProxy;
 
-public class QuickReplaceMessage implements IMessage {
+public class BlockPlacedMessage implements IMessage {
 
     private boolean blockHit;
     private BlockPos blockPos;
     private EnumFacing sideHit;
+    private Vec3d hitVec;
 
-    public QuickReplaceMessage() {
+    public BlockPlacedMessage() {
         this.blockHit = false;
         this.blockPos = BlockPos.ORIGIN;
         this.sideHit = EnumFacing.UP;
+        this.hitVec = new Vec3d(0, 0, 0);
     }
 
-    public QuickReplaceMessage(RayTraceResult result) {
+    public BlockPlacedMessage(RayTraceResult result) {
         this.blockHit = result.typeOfHit == RayTraceResult.Type.BLOCK;
         this.blockPos = result.getBlockPos();
         this.sideHit = result.sideHit;
+        this.hitVec = result.hitVec;
     }
 
     public boolean isBlockHit() {
@@ -41,6 +46,10 @@ public class QuickReplaceMessage implements IMessage {
         return sideHit;
     }
 
+    public Vec3d getHitVec() {
+        return hitVec;
+    }
+
     @Override
     public void toBytes(ByteBuf buf) {
         buf.writeBoolean(blockHit);
@@ -48,6 +57,9 @@ public class QuickReplaceMessage implements IMessage {
         buf.writeInt(blockPos.getY());
         buf.writeInt(blockPos.getZ());
         buf.writeInt(sideHit.getIndex());
+        buf.writeDouble(hitVec.x);
+        buf.writeDouble(hitVec.y);
+        buf.writeDouble(hitVec.z);
     }
 
     @Override
@@ -55,34 +67,29 @@ public class QuickReplaceMessage implements IMessage {
         blockHit = buf.readBoolean();
         blockPos = new BlockPos(buf.readInt(), buf.readInt(), buf.readInt());
         sideHit = EnumFacing.getFront(buf.readInt());
+        hitVec = new Vec3d(buf.readDouble(), buf.readDouble(), buf.readDouble());
     }
 
     // The params of the IMessageHandler are <REQ, REPLY>
-    public static class MessageHandler implements IMessageHandler<QuickReplaceMessage, IMessage> {
+    public static class MessageHandler implements IMessageHandler<BlockPlacedMessage, IMessage> {
         // Do note that the default constructor is required, but implicitly defined in this case
 
         @Override
-        public IMessage onMessage(QuickReplaceMessage message, MessageContext ctx) {
+        public IMessage onMessage(BlockPlacedMessage message, MessageContext ctx) {
             //EffortlessBuilding.log("message received on " + ctx.side + " side");
 
             if (ctx.side == Side.CLIENT){
                 //Received clientside
                 //Send back your info
-                return new QuickReplaceMessage(ClientProxy.previousLookAt);
-
-                //TODO break block then return
-//                Minecraft.getMinecraft().addScheduledTask(() -> {
-//                    EffortlessBuilding.packetHandler.sendToServer(new QuickReplaceMessage(Minecraft.getMinecraft().objectMouseOver));
-//                });
-
+                return new BlockPlacedMessage(ClientProxy.previousLookAt);
             } else {
                 //Received serverside
-                ctx.getServerHandler().player.getServerWorld().addScheduledTask(() -> {
-                    QuickReplace.onMessageReceived(ctx.getServerHandler().player, message);
+                EffortlessBuilding.proxy.getThreadListenerFromContext(ctx).addScheduledTask(() -> {
+                    BuildModifiers.onBlockPlacedMessage(ctx.getServerHandler().player, message);
                 });
+                // No response packet
+                return null;
             }
-            // No response packet
-            return null;
         }
     }
 }

src/main/java/nl/requios/effortlessbuilding/network/BuildSettingsMessage.java

@@ -1,9 +1,7 @@
 package nl.requios.effortlessbuilding.network;
 
 import io.netty.buffer.ByteBuf;
-import net.minecraft.client.Minecraft;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.util.IThreadListener;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
@@ -13,6 +11,7 @@ import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;
 import nl.requios.effortlessbuilding.Array;
 import nl.requios.effortlessbuilding.BuildSettingsManager;
 import nl.requios.effortlessbuilding.BuildSettingsManager.BuildSettings;
+import nl.requios.effortlessbuilding.EffortlessBuilding;
 import nl.requios.effortlessbuilding.Mirror;
 
 public class BuildSettingsMessage implements IMessage {
@@ -50,6 +49,8 @@ public class BuildSettingsMessage implements IMessage {
         buf.writeInt(a.count);
 
         buf.writeBoolean(buildSettings.doQuickReplace());
+
+        buf.writeInt(buildSettings.getReachUpgrade());
     }
 
     @Override
@@ -72,7 +73,10 @@ public class BuildSettingsMessage implements IMessage {
         Array.ArraySettings a = new Array.ArraySettings(arrayEnabled, arrayOffset, arrayCount);
 
         boolean quickReplace = buf.readBoolean();
-        buildSettings = new BuildSettings(m, a, quickReplace);
+
+        int reachUpgrade = buf.readInt();
+
+        buildSettings = new BuildSettings(m, a, quickReplace, reachUpgrade);
     }
 
     // The params of the IMessageHandler are <REQ, REPLY>
@@ -84,23 +88,17 @@ public class BuildSettingsMessage implements IMessage {
             //EffortlessBuilding.log("message received on " + ctx.side + " side");
 
             // This is the player the packet was sent to the server from
-            EntityPlayer player = (ctx.side.isClient() ? Minecraft.getMinecraft().player : ctx.getServerHandler().player);
+            EntityPlayer player = EffortlessBuilding.proxy.getPlayerEntityFromContext(ctx);
             // The value that was sent
             BuildSettings buildSettings = message.buildSettings;
-            Mirror.MirrorSettings m = buildSettings.getMirrorSettings();
-            Array.ArraySettings a = buildSettings.getArraySettings();
 
             // Sanitize
-            m.radius = Math.min(m.radius, Mirror.MAX_RADIUS);
-            m.radius = Math.max(1, m.radius);
-
-            a.count = Math.min(a.count, Array.MAX_COUNT);
-            a.count = Math.max(0, a.count);
+            BuildSettingsManager.sanitize(buildSettings, player);
 
             // Execute the action on the main server thread by adding it as a scheduled task
-            IThreadListener threadListener = (ctx.side.isClient() ? Minecraft.getMinecraft() : ((EntityPlayerMP) player).getServerWorld());
+            IThreadListener threadListener = EffortlessBuilding.proxy.getThreadListenerFromContext(ctx);
             threadListener.addScheduledTask(() -> {
-                EntityPlayer p = (ctx.side.isClient() ? Minecraft.getMinecraft().player : ctx.getServerHandler().player);
+                EntityPlayer p = EffortlessBuilding.proxy.getPlayerEntityFromContext(ctx);
                 BuildSettingsManager.setBuildSettings(p, buildSettings);
             });
             // No response packet

src/main/java/nl/requios/effortlessbuilding/proxy/ClientProxy.java

@@ -1,16 +1,28 @@
 package nl.requios.effortlessbuilding.proxy;
 
 import net.minecraft.block.Block;
+import net.minecraft.block.SoundType;
+import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.entity.EntityPlayerSP;
 import net.minecraft.client.renderer.block.model.ModelResourceLocation;
 import net.minecraft.client.settings.KeyBinding;
+import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.Item;
+import net.minecraft.util.IThreadListener;
+import net.minecraft.util.SoundCategory;
+import net.minecraft.util.SoundEvent;
+import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.RayTraceResult;
+import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.text.TextFormatting;
+import net.minecraft.world.IWorldEventListener;
+import net.minecraft.world.World;
 import net.minecraftforge.client.event.ModelRegistryEvent;
 import net.minecraftforge.client.model.ModelLoader;
+import net.minecraftforge.event.entity.EntityJoinWorldEvent;
 import net.minecraftforge.fml.client.registry.ClientRegistry;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.event.*;
@@ -23,8 +35,12 @@ import net.minecraftforge.fml.relauncher.Side;
 import nl.requios.effortlessbuilding.BuildSettingsManager;
 import nl.requios.effortlessbuilding.EffortlessBuilding;
 import nl.requios.effortlessbuilding.gui.SettingsGui;
+import nl.requios.effortlessbuilding.helper.RenderHelper;
 import nl.requios.effortlessbuilding.network.BuildSettingsMessage;
 import org.lwjgl.input.Keyboard;
+import scala.collection.parallel.ParIterableLike;
+
+import javax.annotation.Nullable;
 
 @Mod.EventBusSubscriber(Side.CLIENT)
 public class ClientProxy implements IProxy {
@@ -39,11 +55,12 @@ public class ClientProxy implements IProxy {
     @Override
     public void init(FMLInitializationEvent event) {
         // register key bindings
-        keyBindings = new KeyBinding[2];
+        keyBindings = new KeyBinding[3];
 
         // instantiate the key bindings
-        keyBindings[0] = new KeyBinding("key.hud.desc", Keyboard.KEY_NUMPAD0, "key.effortlessbuilding.category");
-        keyBindings[1] = new KeyBinding("key.replace.desc", Keyboard.KEY_NUMPAD1, "key.effortlessbuilding.category");
+        keyBindings[0] = new KeyBinding("key.effortlessbuilding.hud.desc", Keyboard.KEY_ADD, "key.effortlessbuilding.category");
+        keyBindings[1] = new KeyBinding("key.effortlessbuilding.replace.desc", Keyboard.KEY_SUBTRACT, "key.effortlessbuilding.category");
+        keyBindings[2] = new KeyBinding("key.effortlessbuilding.creative.desc", Keyboard.KEY_F4, "key.effortlessbuilding.category");
 
         // register all the key bindings
         for (int i = 0; i < keyBindings.length; ++i) {
@@ -58,7 +75,12 @@ public class ClientProxy implements IProxy {
 
     @Override
     public EntityPlayer getPlayerEntityFromContext(MessageContext ctx) {
-        return (ctx.side.isClient() ? Minecraft.getMinecraft().player : EffortlessBuilding.proxy.getPlayerEntityFromContext(ctx));
+        return (ctx.side.isClient() ? Minecraft.getMinecraft().player : ctx.getServerHandler().player);
+    }
+
+    @Override
+    public IThreadListener getThreadListenerFromContext(MessageContext ctx) {
+        return (ctx.side.isClient() ? Minecraft.getMinecraft() : ((EntityPlayerMP) getPlayerEntityFromContext(ctx)).getServerWorld());
     }
 
     @Override
@@ -77,34 +99,58 @@ public class ClientProxy implements IProxy {
         }
     }
 
+    @SubscribeEvent
+    public static void onEntityJoinWorld(EntityJoinWorldEvent event) {
+        if (event.getEntity() == Minecraft.getMinecraft().player) {
+            event.getWorld().addEventListener(new RenderHelper());
+        }
+    }
+
     @SubscribeEvent(priority = EventPriority.NORMAL, receiveCanceled = true)
     public static void onKeyPress(InputEvent.KeyInputEvent event) {
-        // check each enumerated key binding type for pressed and take appropriate action
         EntityPlayerSP player = Minecraft.getMinecraft().player;
+
+        //Remember to send packet to server if necessary
+        //Show HUD
         if (keyBindings[0].isPressed()) {
-            // do stuff for this key binding here
-            // remember you may need to send packet to server
-            if (Minecraft.getMinecraft().currentScreen == null) {
-                Minecraft.getMinecraft().displayGuiScreen(new SettingsGui());
+            //Disabled if max reach is 0, might be set in the config that way.
+            if (BuildSettingsManager.getMaxReach(player) == 0) {
+                EffortlessBuilding.log(player, "Effortless Building is disabled until your reach has increased. Increase your reach with craftable reach upgrades.");
             } else {
-                player.closeScreen();
+                if (Minecraft.getMinecraft().currentScreen == null) {
+                    Minecraft.getMinecraft().displayGuiScreen(new SettingsGui());
+                } else {
+                    player.closeScreen();
+                }
             }
         }
+
+        //QuickReplace toggle
         if (keyBindings[1].isPressed()) {
-            // do stuff for this key binding here
-            // remember you may need to send packet to server
             BuildSettingsManager.BuildSettings buildSettings = BuildSettingsManager.getBuildSettings(player);
             buildSettings.setQuickReplace(!buildSettings.doQuickReplace());
             EffortlessBuilding.log(player, "Set "+ TextFormatting.GOLD + "Quick Replace " + TextFormatting.RESET + (buildSettings.doQuickReplace() ? "on" : "off"));
             EffortlessBuilding.packetHandler.sendToServer(new BuildSettingsMessage(buildSettings));
         }
+
+        //Creative/survival mode toggle
+        if (keyBindings[2].isPressed()) {
+            if (player.isCreative()) {
+                player.sendChatMessage("/gamemode 0");
+            } else {
+                player.sendChatMessage("/gamemode 1");
+            }
+        }
     }
 
     @SubscribeEvent
     public static void onClientTick(TickEvent.ClientTickEvent event) {
         if (event.phase != TickEvent.Phase.START) return;
 
+        //TODO increase range using getLookingAt
+        // Would also need other trigger than onBlockPlaced
         RayTraceResult objectMouseOver = Minecraft.getMinecraft().objectMouseOver;
+        //Checking for null is necessary! Even in vanilla when looking down ladders it is occasionally null (instead of Type MISS)
         if (objectMouseOver == null) return;
 
         if (currentLookAt == null) {
@@ -124,7 +170,14 @@ public class ClientProxy implements IProxy {
                 }
             }
         }
+    }
 
-
+    private static float rayTraceRange = 32f;
+    public static RayTraceResult getLookingAt(EntityPlayer player) {
+        World world = player.world;
+        Vec3d look = player.getLookVec();
+        Vec3d start = new Vec3d(player.posX, player.posY + player.getEyeHeight(), player.posZ);
+        Vec3d end = new Vec3d(player.posX + look.x * rayTraceRange, player.posY + player.getEyeHeight() + look.y * rayTraceRange, player.posZ + look.z * rayTraceRange);
+        return world.rayTraceBlocks(start, end, false, false, false);
     }
 }

src/main/java/nl/requios/effortlessbuilding/proxy/IProxy.java

@@ -1,6 +1,7 @@
 package nl.requios.effortlessbuilding.proxy;
 
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.IThreadListener;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
@@ -33,8 +34,10 @@ public interface IProxy
     /**
      * Returns a side-appropriate EntityPlayer for use during message handling.
      *
-     * @param parContext the context
+     * @param ctx the context
      * @return the player entity from context
      */
-    EntityPlayer getPlayerEntityFromContext(MessageContext parContext);
+    EntityPlayer getPlayerEntityFromContext(MessageContext ctx);
+
+    IThreadListener getThreadListenerFromContext(MessageContext ctx);
 }

src/main/java/nl/requios/effortlessbuilding/proxy/ServerProxy.java

@@ -1,6 +1,8 @@
 package nl.requios.effortlessbuilding.proxy;
 
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.util.IThreadListener;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
@@ -9,6 +11,7 @@ import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;
 
 public class ServerProxy implements IProxy
 {
+    //Only physical server! Singleplayer server is seen as clientproxy
     @Override
     public void preInit(FMLPreInitializationEvent event)
     {
@@ -35,4 +38,9 @@ public class ServerProxy implements IProxy
     {
         return ctx.getServerHandler().player;
     }
+
+    @Override
+    public IThreadListener getThreadListenerFromContext(MessageContext ctx) {
+        return ((EntityPlayerMP) getPlayerEntityFromContext(ctx)).getServerWorld();
+    }
 }

src/main/resources/assets/effortlessbuilding/lang/en_us.lang

@@ -1,5 +1,6 @@
 key.effortlessbuilding.category=Effortless Building
-key.hud.desc=Open Settings
-key.replace.desc=Switch Replace Mode
+key.effortlessbuilding.hud.desc=Open Settings
+key.effortlessbuilding.replace.desc=Toggle QuickReplace
+key.effortlessbuilding.creative.desc=Toggle Survival/Creative Mode
 
 item.effortlessbuilding:randomizer_bag.name=Randomizer Bag

src/main/resources/assets/effortlessbuilding/models/item/randomizer_bag.json

@@ -1,6 +1,6 @@
 {
     "parent": "item/generated",
     "textures": {
-        "layer0": "items/fireball"
+        "layer0": "effortlessbuilding:items/randomizerbag"
     }
 }

src/main/resources/assets/effortlessbuilding/recipes/randomizer_bag.json

@@ -0,0 +1,20 @@
+{
+    "type": "minecraft:crafting_shaped",
+    "pattern": [
+        " # ",
+        "#O#",
+        " # "
+    ],
+    "key": {
+        "#": {
+            "item": "minecraft:leather"
+        },
+		"O": {
+            "item": "minecraft:planks",
+			"data": 32767
+        }
+    },
+    "result": {
+        "item": "effortlessbuilding:randomizer_bag"
+    }
+}

src/main/resources/mcmod.info

@@ -2,10 +2,10 @@
 {
   "modid": "effortlessbuilding",
   "name": "Effortless Building",
-  "description": "Makes building easier by providing tools like mirrors, arrays, quickreplace and a block randomizer.",
+  "description": "Makes building easier by providing tools like mirrors, arrays, QuickReplace and a block randomizer. For survival and creative mode.",
   "version": "${version}",
   "mcversion": "${mcversion}",
-  "url": "https://requios.nl/",
+  "url": "https://minecraft.curseforge.com/projects/effortless-building",
   "updateUrl": "",
   "authorList": ["Requios"],
   "credits": "",