    001    package net.minecraft.world.gen.layer;
    002
    003    public class GenLayerFuzzyZoom extends GenLayer
    004    {
    005        public GenLayerFuzzyZoom(long par1, GenLayer par3GenLayer)
    006        {
    007            super(par1);
    008            super.parent = par3GenLayer;
    009        }
    010
    011        /**
    012         * Returns a list of integer values generated by this layer. These may be interpreted as temperatures, rainfall
    013         * amounts, or biomeList[] indices based on the particular GenLayer subclass.
    014         */
    015        public int[] getInts(int par1, int par2, int par3, int par4)
    016        {
    017            int var5 = par1 >> 1;
    018            int var6 = par2 >> 1;
    019            int var7 = (par3 >> 1) + 3;
    020            int var8 = (par4 >> 1) + 3;
    021            int[] var9 = this.parent.getInts(var5, var6, var7, var8);
    022            int[] var10 = IntCache.getIntCache(var7 * 2 * var8 * 2);
    023            int var11 = var7 << 1;
    024            int var13;
    025
    026            for (int var12 = 0; var12 < var8 - 1; ++var12)
    027            {
    028                var13 = var12 << 1;
    029                int var14 = var13 * var11;
    030                int var15 = var9[0 + (var12 + 0) * var7];
    031                int var16 = var9[0 + (var12 + 1) * var7];
    032
    033                for (int var17 = 0; var17 < var7 - 1; ++var17)
    034                {
    035                    this.initChunkSeed((long)(var17 + var5 << 1), (long)(var12 + var6 << 1));
    036                    int var18 = var9[var17 + 1 + (var12 + 0) * var7];
    037                    int var19 = var9[var17 + 1 + (var12 + 1) * var7];
    038                    var10[var14] = var15;
    039                    var10[var14++ + var11] = this.choose(var15, var16);
    040                    var10[var14] = this.choose(var15, var18);
    041                    var10[var14++ + var11] = this.choose(var15, var18, var16, var19);
    042                    var15 = var18;
    043                    var16 = var19;
    044                }
    045            }
    046
    047            int[] var20 = IntCache.getIntCache(par3 * par4);
    048
    049            for (var13 = 0; var13 < par4; ++var13)
    050            {
    051                System.arraycopy(var10, (var13 + (par2 & 1)) * (var7 << 1) + (par1 & 1), var20, var13 * par3, par3);
    052            }
    053
    054            return var20;
    055        }
    056
    057        /**
    058         * randomly choose between the two args
    059         */
    060        protected int choose(int par1, int par2)
    061        {
    062            return this.nextInt(2) == 0 ? par1 : par2;
    063        }
    064
    065        /**
    066         * randomly choose between the four args
    067         */
    068        protected int choose(int par1, int par2, int par3, int par4)
    069        {
    070            int var5 = this.nextInt(4);
    071            return var5 == 0 ? par1 : (var5 == 1 ? par2 : (var5 == 2 ? par3 : par4));
    072        }
    073    }