001    package net.minecraft.src;
002    
003    public class GenLayerBiome extends GenLayer
004    {
005        /** this sets all the biomes that are allowed to appear in the overworld */
006        private BiomeGenBase[] allowedBiomes;
007    
008        public GenLayerBiome(long par1, GenLayer par3GenLayer, WorldType par4WorldType)
009        {
010            super(par1);
011            this.allowedBiomes = par4WorldType.getBiomesForWorldType();
012            this.parent = par3GenLayer;
013        }
014    
015        /**
016         * Returns a list of integer values generated by this layer. These may be interpreted as temperatures, rainfall
017         * amounts, or biomeList[] indices based on the particular GenLayer subclass.
018         */
019        public int[] getInts(int par1, int par2, int par3, int par4)
020        {
021            int[] var5 = this.parent.getInts(par1, par2, par3, par4);
022            int[] var6 = IntCache.getIntCache(par3 * par4);
023    
024            for (int var7 = 0; var7 < par4; ++var7)
025            {
026                for (int var8 = 0; var8 < par3; ++var8)
027                {
028                    this.initChunkSeed((long)(var8 + par1), (long)(var7 + par2));
029                    int var9 = var5[var8 + var7 * par3];
030    
031                    if (var9 == 0)
032                    {
033                        var6[var8 + var7 * par3] = 0;
034                    }
035                    else if (var9 == BiomeGenBase.mushroomIsland.biomeID)
036                    {
037                        var6[var8 + var7 * par3] = var9;
038                    }
039                    else if (var9 == 1)
040                    {
041                        var6[var8 + var7 * par3] = this.allowedBiomes[this.nextInt(this.allowedBiomes.length)].biomeID;
042                    }
043                    else
044                    {
045                        int var10 = this.allowedBiomes[this.nextInt(this.allowedBiomes.length)].biomeID;
046    
047                        if (var10 == BiomeGenBase.taiga.biomeID)
048                        {
049                            var6[var8 + var7 * par3] = var10;
050                        }
051                        else
052                        {
053                            var6[var8 + var7 * par3] = BiomeGenBase.icePlains.biomeID;
054                        }
055                    }
056                }
057            }
058    
059            return var6;
060        }
061    }