    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    }