Did some more things...

src/main/java/net/minecraft/src/ChunkProviderIso.java

@@ -1,68 +0,0 @@
-package net.minecraft.src;
-
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
-
-public class ChunkProviderIso implements IChunkProvider {
-	private Map<Integer, Chunk> chunks = new HashMap<Integer, Chunk>();
-	private World worldObj;
-	private IChunkLoader chunkLoader;
-	byte[] field_899_a = new byte[-Short.MIN_VALUE];
-
-	public ChunkProviderIso(World var1, IChunkLoader var2) {
-		this.worldObj = var1;
-		this.chunkLoader = var2;
-	}
-
-	public boolean chunkExists(int var1, int var2) {
-		int var3 = var1 & 15 | (var2 & 15) * 16;
-		return this.chunks.containsKey(var3) && this.chunks.get(var3).isAtLocation(var1, var2);
-	}
-
-	public Chunk provideChunk(int var1, int var2) {
-		int var3 = var1 & 15 | (var2 & 15) * 16;
-
-		try {
-			if(!this.chunkExists(var1, var2)) {
-				Chunk var4 = this.func_543_c(var1, var2);
-				if(var4 == null) {
-					var4 = new Chunk(this.worldObj, this.field_899_a, var1, var2);
-					var4.field_1524_q = true;
-					var4.neverSave = true;
-				}
-
-				this.chunks.put(var3, var4);
-			}
-
-			return this.chunks.get(var3);
-		} catch (Exception var5) {
-			var5.printStackTrace();
-			return null;
-		}
-	}
-
-	private synchronized Chunk func_543_c(int var1, int var2) {
-		try {
-			return this.chunkLoader.loadChunk(this.worldObj, var1, var2);
-		} catch (IOException var4) {
-			var4.printStackTrace();
-			return null;
-		}
-	}
-
-	public void populate(IChunkProvider var1, int var2, int var3) {
-	}
-
-	public boolean saveChunks(boolean var1, IProgressUpdate var2) {
-		return true;
-	}
-
-	public boolean func_532_a() {
-		return false;
-	}
-
-	public boolean func_536_b() {
-		return false;
-	}
-}

src/main/java/net/minecraft/src/ChunkProviderLoadOrGenerate.java

@@ -8,7 +8,7 @@ public class ChunkProviderLoadOrGenerate implements IChunkProvider {
 	private Chunk blankChunk;
 	private IChunkProvider chunkProvider;
 	private IChunkLoader chunkLoader;
-	private Map<Integer, Chunk> chunks = new HashMap<Integer, Chunk>();
+	private Chunk[] chunks = new Chunk[1024];
 	private World worldObj;
 	int lastQueriedChunkXPos = -999999999;
 	int lastQueriedChunkZPos = -999999999;
@@ -30,7 +30,7 @@ public class ChunkProviderLoadOrGenerate implements IChunkProvider {
 			int var3 = var1 & 31;
 			int var4 = var2 & 31;
 			int var5 = var3 + var4 * 32;
-			return this.chunks.containsKey(var5) && (this.chunks.get(var5) == this.blankChunk || this.chunks.get(var5).isAtLocation(var1, var2));
+			return this.chunks[var5] != null && (this.chunks[var5] == this.blankChunk || this.chunks[var5].isAtLocation(var1, var2));
 		}
 	}
 
@@ -42,10 +42,10 @@ public class ChunkProviderLoadOrGenerate implements IChunkProvider {
 			int var4 = var2 & 31;
 			int var5 = var3 + var4 * 32;
 			if(!this.chunkExists(var1, var2)) {
-				if(this.chunks.containsKey(var5)) {
-					this.chunks.get(var5).onChunkUnload();
-					this.saveChunk(this.chunks.get(var5));
-					this.saveExtraChunkData(this.chunks.get(var5));
+				if(this.chunks[var5] != null) {
+					this.chunks[var5].onChunkUnload();
+					this.saveChunk(this.chunks[var5]);
+					this.saveExtraChunkData(this.chunks[var5]);
 				}
 
 				Chunk var6 = this.func_542_c(var1, var2);
@@ -57,13 +57,13 @@ public class ChunkProviderLoadOrGenerate implements IChunkProvider {
 					}
 				}
 
-				this.chunks.put(var5, var6);
+				this.chunks[var5] = var6;
 				var6.func_4143_d();
-				if(this.chunks.containsKey(var5)) {
-					this.chunks.get(var5).onChunkLoad();
+				if(this.chunks[var5] != null) {
+					this.chunks[var5].onChunkLoad();
 				}
 
-				if(!this.chunks.get(var5).isTerrainPopulated && this.chunkExists(var1 + 1, var2 + 1) && this.chunkExists(var1, var2 + 1) && this.chunkExists(var1 + 1, var2)) {
+				if(!this.chunks[var5].isTerrainPopulated && this.chunkExists(var1 + 1, var2 + 1) && this.chunkExists(var1, var2 + 1) && this.chunkExists(var1 + 1, var2)) {
 					this.populate(this, var1, var2);
 				}
 
@@ -82,8 +82,8 @@ public class ChunkProviderLoadOrGenerate implements IChunkProvider {
 
 			this.lastQueriedChunkXPos = var1;
 			this.lastQueriedChunkZPos = var2;
-			this.lastQueriedChunk = this.chunks.get(var5);
-			return this.chunks.get(var5);
+			this.lastQueriedChunk = this.chunks[var5];
+			return this.chunks[var5];
 		}
 	}
 
@@ -145,8 +145,8 @@ public class ChunkProviderLoadOrGenerate implements IChunkProvider {
 		int var4 = 0;
 		int var5;
 		if(var2 != null) {
-			for(var5 = 0; var5 < this.chunks.size(); ++var5) {
-				if(this.chunks.get(var5) != null && this.chunks.get(var5).needsSaving(var1)) {
+			for(var5 = 0; var5 < this.chunks.length; ++var5) {
+				if(this.chunks[var5] != null && this.chunks[var5].needsSaving(var1)) {
 					++var4;
 				}
 			}
@@ -154,15 +154,15 @@ public class ChunkProviderLoadOrGenerate implements IChunkProvider {
 
 		var5 = 0;
 
-		for(int var6 = 0; var6 < this.chunks.size(); ++var6) {
-			if(this.chunks.get(var6) != null) {
-				if(var1 && !this.chunks.get(var6).neverSave) {
-					this.saveExtraChunkData(this.chunks.get(var6));
+		for(int var6 = 0; var6 < this.chunks.length; ++var6) {
+			if(this.chunks[var6] != null) {
+				if(var1 && !this.chunks[var6].neverSave) {
+					this.saveExtraChunkData(this.chunks[var6]);
 				}
 
-				if(this.chunks.get(var6).needsSaving(var1)) {
-					this.saveChunk(this.chunks.get(var6));
-					this.chunks.get(var6).isModified = false;
+				if(this.chunks[var6].needsSaving(var1)) {
+					this.saveChunk(this.chunks[var6]);
+					this.chunks[var6].isModified = false;
 					++var3;
 					if(var3 == 2 && !var1) {
 						return false;

src/main/java/net/minecraft/src/RenderList.java

@@ -11,7 +11,7 @@ public class RenderList {
 	private float field_1239_d;
 	private float field_1238_e;
 	private float field_1237_f;
-	private IntBuffer field_1236_g = GLAllocation.createDirectIntBuffer(65536);
+	private IntBuffer field_1236_g = GLAllocation.createDirectIntBuffer(4096);
 	private boolean field_1235_h = false;
 	private boolean field_1234_i = false;
 

src/main/java/net/minecraft/src/WorldRenderer.java

@@ -69,7 +69,7 @@ public class WorldRenderer {
 			float var4 = 2.0F;
 			this.field_1736_v = AxisAlignedBB.getBoundingBox((double)((float)var1 - var4), (double)((float)var2 - var4), (double)((float)var3 - var4), (double)((float)(var1 + this.field_1758_f) + var4), (double)((float)(var2 + this.field_1757_g) + var4), (double)((float)(var3 + this.field_1756_h) + var4));
 			GL11.glNewList(this.field_1744_C + 2, GL11.GL_COMPILE);
-			RenderItem.renderAABB(AxisAlignedBB.getBoundingBoxFromPool((double)((float)this.field_1752_l - var4), (double)((float)this.field_1751_m - var4), (double)((float)this.field_1750_n - var4), (double)((float)(this.field_1752_l + this.field_1758_f) + var4), (double)((float)(this.field_1751_m + this.field_1757_g) + var4), (double)((float)(this.field_1750_n + this.field_1756_h) + var4)));
+			//RenderItem.renderAABB(AxisAlignedBB.getBoundingBoxFromPool((double)((float)this.field_1752_l - var4), (double)((float)this.field_1751_m - var4), (double)((float)this.field_1750_n - var4), (double)((float)(this.field_1752_l + this.field_1758_f) + var4), (double)((float)(this.field_1751_m + this.field_1757_g) + var4), (double)((float)(this.field_1750_n + this.field_1756_h) + var4)));
 			GL11.glEndList();
 			this.MarkDirty();
 		}

src/teavm/java/net/minecraft/src/ChunkLoader.java

@@ -14,53 +14,42 @@ public class ChunkLoader implements IChunkLoader {
 		this.createIfNecessary = var2;
 	}
 	
-	private String chunkFileForXZ(int var1, int var2) {
+	private String chunkFileForXZ_OLD(int var1, int var2) {
 		String var3 = "c." + Integer.toString(var1, 36) + "." + Integer.toString(var2, 36) + ".dat";
 		String var4 = Integer.toString(var1 & 63, 36);
 		String var5 = Integer.toString(var2 & 63, 36);
-		String var6;
-		if(saveDir.endsWith("/")) {
-			var6 = saveDir + var4;
+		String var6 = saveDir + "/" + var4 + "/" + var5 + "/" + var3;
+		
+		if(GL11.readFile(var6) != null) {
+			return var6;
 		} else {
-			var6 = saveDir + "/" + var4;
-		}
-		
-		byte[] data = GL11.readFile(var6);
-		
-		if(data == null) {
-			if(!this.createIfNecessary) {
 			return null;
 		}
-
-			GL11.writeFile(var6, new byte[0]);
 	}
 	
-		if(var6.endsWith("/")) {
-			var6 = var6 + var5;
-		} else {
-			var6 = var6 + "/" + var5;
+	public static final String CHUNK_CHARS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+	public String chunkFileForXZ(int x, int z) {
+		boolean oldChunk = false;
+		String oldChunkPath = chunkFileForXZ_OLD(x, z);
+		if(oldChunkPath != null) {
+			oldChunk = true;
 		}
-		
-		data = null;
-		data = GL11.readFile(var6);
-		
-		if(data == null) {
-			if(!this.createIfNecessary) {
-				return null;
+		int unsignedX = x + 30233088;
+		int unsignedZ = z + 30233088;
+		int radix = CHUNK_CHARS.length();
+		char[] path = new char[10];
+		for(int i = 0; i < 5; ++i) {
+			path[i * 2] = CHUNK_CHARS.charAt(unsignedX % radix);
+			unsignedX /= radix;
+			path[i * 2 + 1] = CHUNK_CHARS.charAt(unsignedZ % radix);
+			unsignedZ /= radix;
 		}
-
-			GL11.writeFile(var6, new byte[0]);
+		String s = this.saveDir + "/" + new String(path);
+		if(oldChunk) {
+			GL11.renameFile(oldChunkPath, s);
 		}
-		
-		if(var6.endsWith("/")) {
-			var6 = var6 + var3;
-		} else {
-			var6 = var6 + "/" + var3;
-		}
-		
-		data = null;
-		data = GL11.readFile(var6);
-		return data == null && !this.createIfNecessary ? null : var6;
+		return s;
 	}
 
 	public Chunk loadChunk(World var1, int var2, int var3) throws IOException {