001    package net.minecraft.world.gen.layer;
002    
003    import net.minecraft.world.biome.BiomeGenBase;
004    
005    public class GenLayerHills extends GenLayer
006    {
007        public GenLayerHills(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 (this.nextInt(3) == 0)
030                    {
031                        int var10 = var9;
032    
033                        if (var9 == BiomeGenBase.desert.biomeID)
034                        {
035                            var10 = BiomeGenBase.desertHills.biomeID;
036                        }
037                        else if (var9 == BiomeGenBase.forest.biomeID)
038                        {
039                            var10 = BiomeGenBase.forestHills.biomeID;
040                        }
041                        else if (var9 == BiomeGenBase.taiga.biomeID)
042                        {
043                            var10 = BiomeGenBase.taigaHills.biomeID;
044                        }
045                        else if (var9 == BiomeGenBase.plains.biomeID)
046                        {
047                            var10 = BiomeGenBase.forest.biomeID;
048                        }
049                        else if (var9 == BiomeGenBase.icePlains.biomeID)
050                        {
051                            var10 = BiomeGenBase.iceMountains.biomeID;
052                        }
053                        else if (var9 == BiomeGenBase.jungle.biomeID)
054                        {
055                            var10 = BiomeGenBase.jungleHills.biomeID;
056                        }
057    
058                        if (var10 == var9)
059                        {
060                            var6[var8 + var7 * par3] = var9;
061                        }
062                        else
063                        {
064                            int var11 = var5[var8 + 1 + (var7 + 1 - 1) * (par3 + 2)];
065                            int var12 = var5[var8 + 1 + 1 + (var7 + 1) * (par3 + 2)];
066                            int var13 = var5[var8 + 1 - 1 + (var7 + 1) * (par3 + 2)];
067                            int var14 = var5[var8 + 1 + (var7 + 1 + 1) * (par3 + 2)];
068    
069                            if (var11 == var9 && var12 == var9 && var13 == var9 && var14 == var9)
070                            {
071                                var6[var8 + var7 * par3] = var10;
072                            }
073                            else
074                            {
075                                var6[var8 + var7 * par3] = var9;
076                            }
077                        }
078                    }
079                    else
080                    {
081                        var6[var8 + var7 * par3] = var9;
082                    }
083                }
084            }
085    
086            return var6;
087        }
088    }