    001    package net.minecraft.world.gen.layer;
    002
    003    import net.minecraft.world.biome.BiomeGenBase;
    004
    005    public class GenLayerAddIsland extends GenLayer
    006    {
    007        public GenLayerAddIsland(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 = par1 - 1;
    020            int var6 = par2 - 1;
    021            int var7 = par3 + 2;
    022            int var8 = par4 + 2;
    023            int[] var9 = this.parent.getInts(var5, var6, var7, var8);
    024            int[] var10 = IntCache.getIntCache(par3 * par4);
    025
    026            for (int var11 = 0; var11 < par4; ++var11)
    027            {
    028                for (int var12 = 0; var12 < par3; ++var12)
    029                {
    030                    int var13 = var9[var12 + 0 + (var11 + 0) * var7];
    031                    int var14 = var9[var12 + 2 + (var11 + 0) * var7];
    032                    int var15 = var9[var12 + 0 + (var11 + 2) * var7];
    033                    int var16 = var9[var12 + 2 + (var11 + 2) * var7];
    034                    int var17 = var9[var12 + 1 + (var11 + 1) * var7];
    035                    this.initChunkSeed((long)(var12 + par1), (long)(var11 + par2));
    036
    037                    if (var17 == 0 && (var13 != 0 || var14 != 0 || var15 != 0 || var16 != 0))
    038                    {
    039                        int var18 = 1;
    040                        int var19 = 1;
    041
    042                        if (var13 != 0 && this.nextInt(var18++) == 0)
    043                        {
    044                            var19 = var13;
    045                        }
    046
    047                        if (var14 != 0 && this.nextInt(var18++) == 0)
    048                        {
    049                            var19 = var14;
    050                        }
    051
    052                        if (var15 != 0 && this.nextInt(var18++) == 0)
    053                        {
    054                            var19 = var15;
    055                        }
    056
    057                        if (var16 != 0 && this.nextInt(var18++) == 0)
    058                        {
    059                            var19 = var16;
    060                        }
    061
    062                        if (this.nextInt(3) == 0)
    063                        {
    064                            var10[var12 + var11 * par3] = var19;
    065                        }
    066                        else if (var19 == BiomeGenBase.icePlains.biomeID)
    067                        {
    068                            var10[var12 + var11 * par3] = BiomeGenBase.frozenOcean.biomeID;
    069                        }
    070                        else
    071                        {
    072                            var10[var12 + var11 * par3] = 0;
    073                        }
    074                    }
    075                    else if (var17 > 0 && (var13 == 0 || var14 == 0 || var15 == 0 || var16 == 0))
    076                    {
    077                        if (this.nextInt(5) == 0)
    078                        {
    079                            if (var17 == BiomeGenBase.icePlains.biomeID)
    080                            {
    081                                var10[var12 + var11 * par3] = BiomeGenBase.frozenOcean.biomeID;
    082                            }
    083                            else
    084                            {
    085                                var10[var12 + var11 * par3] = 0;
    086                            }
    087                        }
    088                        else
    089                        {
    090                            var10[var12 + var11 * par3] = var17;
    091                        }
    092                    }
    093                    else
    094                    {
    095                        var10[var12 + var11 * par3] = var17;
    096                    }
    097                }
    098            }
    099
    100            return var10;
    101        }
    102    }