001    package net.minecraft.src;
002    
003    public class GenLayerAddIsland extends GenLayer
004    {
005        public GenLayerAddIsland(long par1, GenLayer par3GenLayer)
006        {
007            super(par1);
008            this.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 + 2;
020            int var8 = par4 + 2;
021            int[] var9 = this.parent.getInts(var5, var6, var7, var8);
022            int[] var10 = IntCache.getIntCache(par3 * par4);
023    
024            for (int var11 = 0; var11 < par4; ++var11)
025            {
026                for (int var12 = 0; var12 < par3; ++var12)
027                {
028                    int var13 = var9[var12 + 0 + (var11 + 0) * var7];
029                    int var14 = var9[var12 + 2 + (var11 + 0) * var7];
030                    int var15 = var9[var12 + 0 + (var11 + 2) * var7];
031                    int var16 = var9[var12 + 2 + (var11 + 2) * var7];
032                    int var17 = var9[var12 + 1 + (var11 + 1) * var7];
033                    this.initChunkSeed((long)(var12 + par1), (long)(var11 + par2));
034    
035                    if (var17 == 0 && (var13 != 0 || var14 != 0 || var15 != 0 || var16 != 0))
036                    {
037                        int var18 = 1;
038                        int var19 = 1;
039    
040                        if (var13 != 0 && this.nextInt(var18++) == 0)
041                        {
042                            var19 = var13;
043                        }
044    
045                        if (var14 != 0 && this.nextInt(var18++) == 0)
046                        {
047                            var19 = var14;
048                        }
049    
050                        if (var15 != 0 && this.nextInt(var18++) == 0)
051                        {
052                            var19 = var15;
053                        }
054    
055                        if (var16 != 0 && this.nextInt(var18++) == 0)
056                        {
057                            var19 = var16;
058                        }
059    
060                        if (this.nextInt(3) == 0)
061                        {
062                            var10[var12 + var11 * par3] = var19;
063                        }
064                        else if (var19 == BiomeGenBase.icePlains.biomeID)
065                        {
066                            var10[var12 + var11 * par3] = BiomeGenBase.frozenOcean.biomeID;
067                        }
068                        else
069                        {
070                            var10[var12 + var11 * par3] = 0;
071                        }
072                    }
073                    else if (var17 > 0 && (var13 == 0 || var14 == 0 || var15 == 0 || var16 == 0))
074                    {
075                        if (this.nextInt(5) == 0)
076                        {
077                            if (var17 == BiomeGenBase.icePlains.biomeID)
078                            {
079                                var10[var12 + var11 * par3] = BiomeGenBase.frozenOcean.biomeID;
080                            }
081                            else
082                            {
083                                var10[var12 + var11 * par3] = 0;
084                            }
085                        }
086                        else
087                        {
088                            var10[var12 + var11 * par3] = var17;
089                        }
090                    }
091                    else
092                    {
093                        var10[var12 + var11 * par3] = var17;
094                    }
095                }
096            }
097    
098            return var10;
099        }
100    }