diff --git a/sources/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/sources/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
new file mode 100644
index 000000000..13e429ded
--- /dev/null
+++ b/sources/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
@@ -0,0 +1,317 @@
+package org.bukkit.craftbukkit;
+
+import java.lang.ref.WeakReference;
+import java.util.Arrays;
+
+import java.util.Random;
+import net.minecraft.server.*;
+
+import org.bukkit.Chunk;
+import org.bukkit.World;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockState;
+import org.bukkit.craftbukkit.block.CraftBlock;
+import org.bukkit.entity.Entity;
+import org.bukkit.ChunkSnapshot;
+
+public class CraftChunk implements Chunk {
+    private WeakReference<net.minecraft.server.Chunk> weakChunk;
+    private final WorldServer worldServer;
+    private final int x;
+    private final int z;
+    private static final byte[] emptyData = new byte[2048];
+    private static final short[] emptyBlockIDs = new short[4096];
+    private static final byte[] emptySkyLight = new byte[2048];
+
+    public CraftChunk(net.minecraft.server.Chunk chunk) {
+        this.weakChunk = new WeakReference<net.minecraft.server.Chunk>(chunk);
+
+        worldServer = (WorldServer) getHandle().world;
+        x = getHandle().locX;
+        z = getHandle().locZ;
+    }
+
+    public World getWorld() {
+        return worldServer.getWorld();
+    }
+
+    public CraftWorld getCraftWorld() {
+        return (CraftWorld) getWorld();
+    }
+
+    public net.minecraft.server.Chunk getHandle() {
+        net.minecraft.server.Chunk c = weakChunk.get();
+
+        if (c == null) {
+            c = worldServer.getChunkAt(x, z);
+
+            weakChunk = new WeakReference<net.minecraft.server.Chunk>(c);
+        }
+
+        return c;
+    }
+
+    void breakLink() {
+        weakChunk.clear();
+    }
+
+    public int getX() {
+        return x;
+    }
+
+    public int getZ() {
+        return z;
+    }
+
+    @Override
+    public String toString() {
+        return "CraftChunk{" + "x=" + getX() + "z=" + getZ() + '}';
+    }
+
+    public Block getBlock(int x, int y, int z) {
+        return new CraftBlock(this, (getX() << 4) | (x & 0xF), y, (getZ() << 4) | (z & 0xF));
+    }
+
+    public Entity[] getEntities() {
+        int count = 0, index = 0;
+        net.minecraft.server.Chunk chunk = getHandle();
+
+        for (int i = 0; i < 16; i++) {
+            count += chunk.entitySlices[i].size();
+        }
+
+        Entity[] entities = new Entity[count];
+
+        for (int i = 0; i < 16; i++) {
+
+            //for (Object obj : chunk.entitySlices[i].toArray()) {
+            //    if (!(obj instanceof net.minecraft.server.Entity)) {
+            // NeonPaper start - speed up (was with chunk.entitySlices[i].toArray() and cast checks which costs a lot of performance if called often)
+			for (net.minecraft.server.Entity entity : chunk.entitySlices[i]) {
+                if (entity == null) {
+                    continue;
+                }
+
+                //entities[index++] = ((net.minecraft.server.Entity) obj).getBukkitEntity();
+				entities[index++] = entity.getBukkitEntity();
+            }
+			//NeonPaper end
+        }
+
+        return entities;
+    }
+
+    public BlockState[] getTileEntities() {
+        int index = 0;
+        net.minecraft.server.Chunk chunk = getHandle();
+
+        BlockState[] entities = new BlockState[chunk.tileEntities.size()];
+
+        for (Object obj : chunk.tileEntities.keySet().toArray()) {
+            if (!(obj instanceof BlockPosition)) {
+                continue;
+            }
+
+            BlockPosition position = (BlockPosition) obj;
+            entities[index++] = worldServer.getWorld().getBlockAt(position.getX(), position.getY(), position.getZ()).getState();
+        }
+
+        return entities;
+    }
+
+    public boolean isLoaded() {
+        return getWorld().isChunkLoaded(this);
+    }
+
+    public boolean load() {
+        return getWorld().loadChunk(getX(), getZ(), true);
+    }
+
+    public boolean load(boolean generate) {
+        return getWorld().loadChunk(getX(), getZ(), generate);
+    }
+
+    public boolean unload() {
+        return getWorld().unloadChunk(getX(), getZ());
+    }
+
+    @Override
+    public boolean isSlimeChunk() {
+        // 987234911L is deterimined in EntitySlime when seeing if a slime can spawn in a chunk
+        return getHandle().a(worldServer.spigotConfig.slimeSeed).nextInt(10) == 0;
+    }
+
+    public boolean unload(boolean save) {
+        return getWorld().unloadChunk(getX(), getZ(), save);
+    }
+
+    public boolean unload(boolean save, boolean safe) {
+        return getWorld().unloadChunk(getX(), getZ(), save, safe);
+    }
+
+    public ChunkSnapshot getChunkSnapshot() {
+        return getChunkSnapshot(true, false, false);
+    }
+
+    public ChunkSnapshot getChunkSnapshot(boolean includeMaxBlockY, boolean includeBiome, boolean includeBiomeTempRain) {
+        net.minecraft.server.Chunk chunk = getHandle();
+
+        ChunkSection[] cs = chunk.getSections();
+        short[][] sectionBlockIDs = new short[cs.length][];
+        byte[][] sectionBlockData = new byte[cs.length][];
+        byte[][] sectionSkyLights = new byte[cs.length][];
+        byte[][] sectionEmitLights = new byte[cs.length][];
+        boolean[] sectionEmpty = new boolean[cs.length];
+
+        for (int i = 0; i < cs.length; i++) {
+            if (cs[i] == null) { // Section is empty?
+                sectionBlockIDs[i] = emptyBlockIDs;
+                sectionBlockData[i] = emptyData;
+                sectionSkyLights[i] = emptySkyLight;
+                sectionEmitLights[i] = emptyData;
+                sectionEmpty[i] = true;
+            } else { // Not empty
+                short[] blockids = new short[4096];
+
+                byte[] rawIds = new byte[4096];
+                NibbleArray data = new NibbleArray();
+                cs[i].getBlocks().exportData(rawIds, data);
+
+                byte[] dataValues = sectionBlockData[i] = data.asBytes();
+
+                // Copy base IDs
+                for (int j = 0; j < 4096; j++) {
+                    blockids[j] = (short) (rawIds[j] & 0xFF);
+                }
+
+                sectionBlockIDs[i] = blockids;
+
+                if (cs[i].getSkyLightArray() == null) {
+                    sectionSkyLights[i] = emptyData;
+                } else {
+                    sectionSkyLights[i] = new byte[2048];
+                    System.arraycopy(cs[i].getSkyLightArray().asBytes(), 0, sectionSkyLights[i], 0, 2048);
+                }
+                sectionEmitLights[i] = new byte[2048];
+                System.arraycopy(cs[i].getEmittedLightArray().asBytes(), 0, sectionEmitLights[i], 0, 2048);
+            }
+        }
+
+        int[] hmap = null;
+
+        if (includeMaxBlockY) {
+            hmap = new int[256]; // Get copy of height map
+            System.arraycopy(chunk.heightMap, 0, hmap, 0, 256);
+        }
+
+        BiomeBase[] biome = null;
+        double[] biomeTemp = null;
+        double[] biomeRain = null;
+
+        if (includeBiome || includeBiomeTempRain) {
+            WorldChunkManager wcm = chunk.world.getWorldChunkManager();
+
+            if (includeBiome) {
+                biome = new BiomeBase[256];
+                for (int i = 0; i < 256; i++) {
+                    biome[i] = chunk.getBiome(new BlockPosition(i & 0xF, 0, i >> 4), wcm);
+                }
+            }
+
+            if (includeBiomeTempRain) {
+                biomeTemp = new double[256];
+                biomeRain = new double[256];
+                float[] dat = getTemperatures(wcm, getX() << 4, getZ() << 4);
+
+                for (int i = 0; i < 256; i++) {
+                    biomeTemp[i] = dat[i];
+                }
+
+                /* Removed 15w46a
+                dat = wcm.getWetness(null, getX() << 4, getZ() << 4, 16, 16);
+
+                for (int i = 0; i < 256; i++) {
+                    biomeRain[i] = dat[i];
+                }
+                */
+            }
+        }
+
+        World world = getWorld();
+        return new CraftChunkSnapshot(getX(), getZ(), world.getName(), world.getFullTime(), sectionBlockIDs, sectionBlockData, sectionSkyLights, sectionEmitLights, sectionEmpty, hmap, biome, biomeTemp, biomeRain);
+    }
+
+    public static ChunkSnapshot getEmptyChunkSnapshot(int x, int z, CraftWorld world, boolean includeBiome, boolean includeBiomeTempRain) {
+        BiomeBase[] biome = null;
+        double[] biomeTemp = null;
+        double[] biomeRain = null;
+
+        if (includeBiome || includeBiomeTempRain) {
+            WorldChunkManager wcm = world.getHandle().getWorldChunkManager();
+
+            if (includeBiome) {
+                biome = new BiomeBase[256];
+                for (int i = 0; i < 256; i++) {
+                    biome[i] = world.getHandle().getBiome(new BlockPosition((x << 4) + (i & 0xF), 0, (z << 4) + (i >> 4)));
+                }
+            }
+
+            if (includeBiomeTempRain) {
+                biomeTemp = new double[256];
+                biomeRain = new double[256];
+                float[] dat = getTemperatures(wcm, x << 4, z << 4);
+
+                for (int i = 0; i < 256; i++) {
+                    biomeTemp[i] = dat[i];
+                }
+
+                /* Removed 15w46a
+                dat = wcm.getWetness(null, x << 4, z << 4, 16, 16);
+
+                for (int i = 0; i < 256; i++) {
+                    biomeRain[i] = dat[i];
+                }
+                */
+            }
+        }
+
+        /* Fill with empty data */
+        int hSection = world.getMaxHeight() >> 4;
+        short[][] blockIDs = new short[hSection][];
+        byte[][] skyLight = new byte[hSection][];
+        byte[][] emitLight = new byte[hSection][];
+        byte[][] blockData = new byte[hSection][];
+        boolean[] empty = new boolean[hSection];
+
+        for (int i = 0; i < hSection; i++) {
+            blockIDs[i] = emptyBlockIDs;
+            skyLight[i] = emptySkyLight;
+            emitLight[i] = emptyData;
+            blockData[i] = emptyData;
+            empty[i] = true;
+        }
+
+        return new CraftChunkSnapshot(x, z, world.getName(), world.getFullTime(), blockIDs, blockData, skyLight, emitLight, empty, new int[256], biome, biomeTemp, biomeRain);
+    }
+
+    private static float[] getTemperatures(WorldChunkManager chunkmanager, int chunkX, int chunkZ) {
+        BiomeBase[] biomes = chunkmanager.getBiomes(null, chunkX, chunkZ, 16, 16);
+        float[] temps = new float[biomes.length];
+
+        for (int i = 0; i < biomes.length; i++) {
+            float temp = biomes[i].getTemperature(); // Vanilla of olde: ((int) biomes[i].temperature * 65536.0F) / 65536.0F
+
+            if (temp > 1F) {
+                temp = 1F;
+            }
+
+            temps[i] = temp;
+        }
+
+        return temps;
+    }
+
+    static {
+        Arrays.fill(emptySkyLight, (byte) 0xFF);
+    }
+}