001    package net.minecraft.src;
002    
003    import java.util.Random;
004    
005    public class WorldGenLakes extends WorldGenerator
006    {
007        private int blockIndex;
008    
009        public WorldGenLakes(int par1)
010        {
011            this.blockIndex = par1;
012        }
013    
014        public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
015        {
016            par3 -= 8;
017    
018            for (par5 -= 8; par4 > 5 && par1World.isAirBlock(par3, par4, par5); --par4)
019            {
020                ;
021            }
022    
023            if (par4 <= 4)
024            {
025                return false;
026            }
027            else
028            {
029                par4 -= 4;
030                boolean[] var6 = new boolean[2048];
031                int var7 = par2Random.nextInt(4) + 4;
032                int var8;
033    
034                for (var8 = 0; var8 < var7; ++var8)
035                {
036                    double var9 = par2Random.nextDouble() * 6.0D + 3.0D;
037                    double var11 = par2Random.nextDouble() * 4.0D + 2.0D;
038                    double var13 = par2Random.nextDouble() * 6.0D + 3.0D;
039                    double var15 = par2Random.nextDouble() * (16.0D - var9 - 2.0D) + 1.0D + var9 / 2.0D;
040                    double var17 = par2Random.nextDouble() * (8.0D - var11 - 4.0D) + 2.0D + var11 / 2.0D;
041                    double var19 = par2Random.nextDouble() * (16.0D - var13 - 2.0D) + 1.0D + var13 / 2.0D;
042    
043                    for (int var21 = 1; var21 < 15; ++var21)
044                    {
045                        for (int var22 = 1; var22 < 15; ++var22)
046                        {
047                            for (int var23 = 1; var23 < 7; ++var23)
048                            {
049                                double var24 = ((double)var21 - var15) / (var9 / 2.0D);
050                                double var26 = ((double)var23 - var17) / (var11 / 2.0D);
051                                double var28 = ((double)var22 - var19) / (var13 / 2.0D);
052                                double var30 = var24 * var24 + var26 * var26 + var28 * var28;
053    
054                                if (var30 < 1.0D)
055                                {
056                                    var6[(var21 * 16 + var22) * 8 + var23] = true;
057                                }
058                            }
059                        }
060                    }
061                }
062    
063                int var10;
064                int var32;
065                boolean var33;
066    
067                for (var8 = 0; var8 < 16; ++var8)
068                {
069                    for (var32 = 0; var32 < 16; ++var32)
070                    {
071                        for (var10 = 0; var10 < 8; ++var10)
072                        {
073                            var33 = !var6[(var8 * 16 + var32) * 8 + var10] && (var8 < 15 && var6[((var8 + 1) * 16 + var32) * 8 + var10] || var8 > 0 && var6[((var8 - 1) * 16 + var32) * 8 + var10] || var32 < 15 && var6[(var8 * 16 + var32 + 1) * 8 + var10] || var32 > 0 && var6[(var8 * 16 + (var32 - 1)) * 8 + var10] || var10 < 7 && var6[(var8 * 16 + var32) * 8 + var10 + 1] || var10 > 0 && var6[(var8 * 16 + var32) * 8 + (var10 - 1)]);
074    
075                            if (var33)
076                            {
077                                Material var12 = par1World.getBlockMaterial(par3 + var8, par4 + var10, par5 + var32);
078    
079                                if (var10 >= 4 && var12.isLiquid())
080                                {
081                                    return false;
082                                }
083    
084                                if (var10 < 4 && !var12.isSolid() && par1World.getBlockId(par3 + var8, par4 + var10, par5 + var32) != this.blockIndex)
085                                {
086                                    return false;
087                                }
088                            }
089                        }
090                    }
091                }
092    
093                for (var8 = 0; var8 < 16; ++var8)
094                {
095                    for (var32 = 0; var32 < 16; ++var32)
096                    {
097                        for (var10 = 0; var10 < 8; ++var10)
098                        {
099                            if (var6[(var8 * 16 + var32) * 8 + var10])
100                            {
101                                par1World.setBlock(par3 + var8, par4 + var10, par5 + var32, var10 >= 4 ? 0 : this.blockIndex);
102                            }
103                        }
104                    }
105                }
106    
107                for (var8 = 0; var8 < 16; ++var8)
108                {
109                    for (var32 = 0; var32 < 16; ++var32)
110                    {
111                        for (var10 = 4; var10 < 8; ++var10)
112                        {
113                            if (var6[(var8 * 16 + var32) * 8 + var10] && par1World.getBlockId(par3 + var8, par4 + var10 - 1, par5 + var32) == Block.dirt.blockID && par1World.getSavedLightValue(EnumSkyBlock.Sky, par3 + var8, par4 + var10, par5 + var32) > 0)
114                            {
115                                BiomeGenBase var35 = par1World.getBiomeGenForCoords(par3 + var8, par5 + var32);
116    
117                                if (var35.topBlock == Block.mycelium.blockID)
118                                {
119                                    par1World.setBlock(par3 + var8, par4 + var10 - 1, par5 + var32, Block.mycelium.blockID);
120                                }
121                                else
122                                {
123                                    par1World.setBlock(par3 + var8, par4 + var10 - 1, par5 + var32, Block.grass.blockID);
124                                }
125                            }
126                        }
127                    }
128                }
129    
130                if (Block.blocksList[this.blockIndex].blockMaterial == Material.lava)
131                {
132                    for (var8 = 0; var8 < 16; ++var8)
133                    {
134                        for (var32 = 0; var32 < 16; ++var32)
135                        {
136                            for (var10 = 0; var10 < 8; ++var10)
137                            {
138                                var33 = !var6[(var8 * 16 + var32) * 8 + var10] && (var8 < 15 && var6[((var8 + 1) * 16 + var32) * 8 + var10] || var8 > 0 && var6[((var8 - 1) * 16 + var32) * 8 + var10] || var32 < 15 && var6[(var8 * 16 + var32 + 1) * 8 + var10] || var32 > 0 && var6[(var8 * 16 + (var32 - 1)) * 8 + var10] || var10 < 7 && var6[(var8 * 16 + var32) * 8 + var10 + 1] || var10 > 0 && var6[(var8 * 16 + var32) * 8 + (var10 - 1)]);
139    
140                                if (var33 && (var10 < 4 || par2Random.nextInt(2) != 0) && par1World.getBlockMaterial(par3 + var8, par4 + var10, par5 + var32).isSolid())
141                                {
142                                    par1World.setBlock(par3 + var8, par4 + var10, par5 + var32, Block.stone.blockID);
143                                }
144                            }
145                        }
146                    }
147                }
148    
149                if (Block.blocksList[this.blockIndex].blockMaterial == Material.water)
150                {
151                    for (var8 = 0; var8 < 16; ++var8)
152                    {
153                        for (var32 = 0; var32 < 16; ++var32)
154                        {
155                            byte var34 = 4;
156    
157                            if (par1World.isBlockFreezable(par3 + var8, par4 + var34, par5 + var32))
158                            {
159                                par1World.setBlock(par3 + var8, par4 + var34, par5 + var32, Block.ice.blockID);
160                            }
161                        }
162                    }
163                }
164    
165                return true;
166            }
167        }
168    }