001    package net.minecraft.world.gen.layer;
002    
003    import net.minecraft.world.biome.BiomeGenBase;
004    
005    public class GenLayerSwampRivers extends GenLayer
006    {
007        public GenLayerSwampRivers(long par1, GenLayer par3GenLayer)
008        {
009            super(par1);
010            this.parent = par3GenLayer;
011        }
012    
013        /**
014         * Returns a list of integer values generated by this layer. These may be interpreted as temperatures, rainfall
015         * amounts, or biomeList[] indices based on the particular GenLayer subclass.
016         */
017        public int[] getInts(int par1, int par2, int par3, int par4)
018        {
019            int[] var5 = this.parent.getInts(par1 - 1, par2 - 1, par3 + 2, par4 + 2);
020            int[] var6 = IntCache.getIntCache(par3 * par4);
021    
022            for (int var7 = 0; var7 < par4; ++var7)
023            {
024                for (int var8 = 0; var8 < par3; ++var8)
025                {
026                    this.initChunkSeed((long)(var8 + par1), (long)(var7 + par2));
027                    int var9 = var5[var8 + 1 + (var7 + 1) * (par3 + 2)];
028    
029                    if ((var9 != BiomeGenBase.swampland.biomeID || this.nextInt(6) != 0) && (var9 != BiomeGenBase.jungle.biomeID && var9 != BiomeGenBase.jungleHills.biomeID || this.nextInt(8) != 0))
030                    {
031                        var6[var8 + var7 * par3] = var9;
032                    }
033                    else
034                    {
035                        var6[var8 + var7 * par3] = BiomeGenBase.river.biomeID;
036                    }
037                }
038            }
039    
040            return var6;
041        }
042    }