Added chunk generators and our custom biome layer

src/main/java/biomesoplenty/common/world/WorldChunkManagerBOP.java

@@ -0,0 +1,32 @@
+/*******************************************************************************
+ * Copyright 2015, the Biomes O' Plenty Team
+ * 
+ * This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License.
+ * 
+ * To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.
+ ******************************************************************************/
+
+package biomesoplenty.common.world;
+
+import net.minecraft.world.World;
+import net.minecraft.world.WorldType;
+import net.minecraft.world.biome.WorldChunkManager;
+import net.minecraft.world.gen.layer.GenLayer;
+
+public class WorldChunkManagerBOP extends WorldChunkManager
+{
+    public WorldChunkManagerBOP(long seed, WorldType worldType, String chunkProviderSettings)
+    {
+        super();
+        this.field_180301_f = chunkProviderSettings;
+        GenLayer[] agenlayer = GenLayer.initializeAllBiomeGenerators(seed, worldType, chunkProviderSettings);
+        agenlayer = getModdedBiomeGenerators(worldType, seed, agenlayer);
+        this.genBiomes = agenlayer[0];
+        this.biomeIndexLayer = agenlayer[1];
+    }
+    
+    public WorldChunkManagerBOP(World world)
+    {
+        this(world.getSeed(), world.getWorldInfo().getTerrainType(), world.getWorldInfo().getGeneratorOptions());
+    }
+}

src/main/java/biomesoplenty/common/world/WorldTypeBOP.java

@@ -8,7 +8,13 @@
 
 package biomesoplenty.common.world;
 
+import net.minecraft.world.World;
 import net.minecraft.world.WorldType;
+import net.minecraft.world.biome.WorldChunkManager;
+import net.minecraft.world.gen.layer.GenLayer;
+import net.minecraft.world.gen.layer.GenLayerBiomeEdge;
+import net.minecraft.world.gen.layer.GenLayerZoom;
+import biomesoplenty.common.world.layer.GenLayerBiomeBOP;
 
 public class WorldTypeBOP extends WorldType
 {
@@ -18,4 +24,19 @@ public class WorldTypeBOP extends WorldType
 
         this.setNotificationData();
     }
+
+    @Override
+    public GenLayer getBiomeLayer(long worldSeed, GenLayer parentLayer, String chunkProviderSettingsJson)
+    {
+        GenLayer ret = new GenLayerBiomeBOP(200L, parentLayer, this, chunkProviderSettingsJson);
+        ret = GenLayerZoom.magnify(1000L, ret, 2);
+        ret = new GenLayerBiomeEdge(1000L, ret);
+        return ret;
+    }
+    
+    @Override
+    public WorldChunkManager getChunkManager(World world)
+    {
+        return new WorldChunkManagerBOP(world);
+    }
 }

src/main/java/biomesoplenty/common/world/layer/GenLayerBiomeBOP.java

@@ -0,0 +1,130 @@
+/*******************************************************************************
+ * Copyright 2015, the Biomes O' Plenty Team
+ * 
+ * This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License.
+ * 
+ * To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.
+ ******************************************************************************/
+
+package biomesoplenty.common.world.layer;
+
+import static net.minecraftforge.common.BiomeManager.BiomeType.COOL;
+import static net.minecraftforge.common.BiomeManager.BiomeType.DESERT;
+import static net.minecraftforge.common.BiomeManager.BiomeType.ICY;
+import static net.minecraftforge.common.BiomeManager.BiomeType.WARM;
+
+import java.util.List;
+
+import net.minecraft.util.WeightedRandom;
+import net.minecraft.world.WorldType;
+import net.minecraft.world.biome.BiomeGenBase;
+import net.minecraft.world.gen.layer.GenLayer;
+import net.minecraft.world.gen.layer.GenLayerBiome;
+import net.minecraft.world.gen.layer.IntCache;
+import net.minecraftforge.common.BiomeManager;
+import net.minecraftforge.common.BiomeManager.BiomeEntry;
+import net.minecraftforge.fml.relauncher.ReflectionHelper;
+
+public class GenLayerBiomeBOP extends GenLayerBiome
+{
+    private List<BiomeEntry>[] biomes;
+    
+    public GenLayerBiomeBOP(long seed, GenLayer parentLayer, WorldType worldType, String chunkProviderSettings)
+    {
+        super(seed, parentLayer, worldType, chunkProviderSettings);
+        
+        biomes = ReflectionHelper.getPrivateValue(GenLayerBiome.class, this, "biomes");
+        
+        //TODO: Use vanilla biome weights
+    }
+    
+    @Override
+    public int[] getInts(int areaX, int areaY, int areaWidth, int areaHeight)
+    {
+        int[] inputBiomeIds = this.parent.getInts(areaX, areaY, areaWidth, areaHeight);
+        int[] outputBiomeIds = IntCache.getIntCache(areaWidth * areaHeight);
+
+        for (int x = 0; x < areaHeight; ++x)
+        {
+            for (int z = 0; z < areaWidth; ++z)
+            {
+                this.initChunkSeed((long)(z + areaX), (long)(x + areaY));
+                int k1 = inputBiomeIds[z + x * areaWidth];
+                int l1 = (k1 & 3840) >> 8;
+                k1 &= -3841;
+
+                /*if (this.field_175973_g != null && this.field_175973_g.fixedBiome >= 0)
+                {
+                    aint1[j1 + i1 * areaWidth] = this.field_175973_g.fixedBiome;
+                }
+                else */if (isBiomeOceanic(k1))
+                {
+                    outputBiomeIds[z + x * areaWidth] = k1;
+                }
+                else if (k1 == BiomeGenBase.mushroomIsland.biomeID)
+                {
+                    outputBiomeIds[z + x * areaWidth] = k1;
+                }
+                else if (k1 == 1)
+                {
+                    if (l1 > 0)
+                    {
+                        if (this.nextInt(3) == 0)
+                        {
+                            outputBiomeIds[z + x * areaWidth] = BiomeGenBase.mesaPlateau.biomeID;
+                        }
+                        else
+                        {
+                            outputBiomeIds[z + x * areaWidth] = BiomeGenBase.mesaPlateau_F.biomeID;
+                        }
+                    }
+                    else
+                    {
+                        outputBiomeIds[z + x * areaWidth] = getWeightedBiomeEntry(DESERT).biome.biomeID;
+                    }
+                }
+                else if (k1 == 2)
+                {
+                    if (l1 > 0)
+                    {
+                        outputBiomeIds[z + x * areaWidth] = BiomeGenBase.jungle.biomeID;
+                    }
+                    else
+                    {
+                        outputBiomeIds[z + x * areaWidth] = getWeightedBiomeEntry(WARM).biome.biomeID;
+                    }
+                }
+                else if (k1 == 3)
+                {
+                    if (l1 > 0)
+                    {
+                        outputBiomeIds[z + x * areaWidth] = BiomeGenBase.megaTaiga.biomeID;
+                    }
+                    else
+                    {
+                        outputBiomeIds[z + x * areaWidth] = getWeightedBiomeEntry(COOL).biome.biomeID;
+                    }
+                }
+                else if (k1 == 4)
+                {
+                    outputBiomeIds[z + x * areaWidth] = getWeightedBiomeEntry(ICY).biome.biomeID;
+                }
+                else
+                {
+                    outputBiomeIds[z + x * areaWidth] = BiomeGenBase.mushroomIsland.biomeID;
+                }
+            }
+        }
+
+        return outputBiomeIds;
+    }
+
+    @Override
+    protected BiomeEntry getWeightedBiomeEntry(BiomeManager.BiomeType type)
+    {
+        List<BiomeEntry> biomeList = biomes[type.ordinal()];
+        int totalWeight = WeightedRandom.getTotalWeight(biomeList);
+        int weight = nextInt(totalWeight);
+        return (BiomeEntry)WeightedRandom.getRandomItem(biomeList, weight);
+    }
+}

src/main/resources/biomesoplenty_at.cfg

@@ -1,5 +1,9 @@
 public net.minecraft.client.gui.GuiScreen func_146283_a(Ljava/util/List;II)V #drawHoveringText
 public net.minecraft.client.gui.GuiCreateWorld field_146320_D #field_146320_D
 public net.minecraft.client.gui.GuiCreateWorld field_146331_K #field_146331_K
+
 public-f net.minecraft.world.biome.BiomeGenBase field_76756_M #biomeID
 public net.minecraft.world.WorldType func_151358_j()Lnet/minecraft/world/WorldType; #setNotificationData
+protected net.minecraft.world.biome.WorldChunkManager field_76944_d #genBiomes
+protected net.minecraft.world.biome.WorldChunkManager field_76945_e #biomeIndexLayer
+protected net.minecraft.world.biome.WorldChunkManager field_180301_f #field_180301_f