    001package net.minecraft.world.gen.layer;
    002
    003import net.minecraft.world.biome.BiomeGenBase;
    004
    005public 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[] aint = this.parent.getInts(par1 - 1, par2 - 1, par3 + 2, par4 + 2);
    020        int[] aint1 = IntCache.getIntCache(par3 * par4);
    021
    022        for (int i1 = 0; i1 < par4; ++i1)
    023        {
    024            for (int j1 = 0; j1 < par3; ++j1)
    025            {
    026                this.initChunkSeed((long)(j1 + par1), (long)(i1 + par2));
    027                int k1 = aint[j1 + 1 + (i1 + 1) * (par3 + 2)];
    028
    029                if ((k1 != BiomeGenBase.swampland.biomeID || this.nextInt(6) != 0) && (k1 != BiomeGenBase.jungle.biomeID && k1 != BiomeGenBase.jungleHills.biomeID || this.nextInt(8) != 0))
    030                {
    031                    aint1[j1 + i1 * par3] = k1;
    032                }
    033                else
    034                {
    035                    aint1[j1 + i1 * par3] = BiomeGenBase.river.biomeID;
    036                }
    037            }
    038        }
    039
    040        return aint1;
    041    }
    042}