001package net.minecraft.world.gen.feature;
002
003import java.util.Random;
004import net.minecraft.block.Block;
005import net.minecraft.block.material.Material;
006import net.minecraft.world.EnumSkyBlock;
007import net.minecraft.world.World;
008import net.minecraft.world.biome.BiomeGenBase;
009
010public class WorldGenLakes extends WorldGenerator
011{
012    private int blockIndex;
013
014    public WorldGenLakes(int par1)
015    {
016        this.blockIndex = par1;
017    }
018
019    public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
020    {
021        par3 -= 8;
022
023        for (par5 -= 8; par4 > 5 && par1World.isAirBlock(par3, par4, par5); --par4)
024        {
025            ;
026        }
027
028        if (par4 <= 4)
029        {
030            return false;
031        }
032        else
033        {
034            par4 -= 4;
035            boolean[] var6 = new boolean[2048];
036            int var7 = par2Random.nextInt(4) + 4;
037            int var8;
038
039            for (var8 = 0; var8 < var7; ++var8)
040            {
041                double var9 = par2Random.nextDouble() * 6.0D + 3.0D;
042                double var11 = par2Random.nextDouble() * 4.0D + 2.0D;
043                double var13 = par2Random.nextDouble() * 6.0D + 3.0D;
044                double var15 = par2Random.nextDouble() * (16.0D - var9 - 2.0D) + 1.0D + var9 / 2.0D;
045                double var17 = par2Random.nextDouble() * (8.0D - var11 - 4.0D) + 2.0D + var11 / 2.0D;
046                double var19 = par2Random.nextDouble() * (16.0D - var13 - 2.0D) + 1.0D + var13 / 2.0D;
047
048                for (int var21 = 1; var21 < 15; ++var21)
049                {
050                    for (int var22 = 1; var22 < 15; ++var22)
051                    {
052                        for (int var23 = 1; var23 < 7; ++var23)
053                        {
054                            double var24 = ((double)var21 - var15) / (var9 / 2.0D);
055                            double var26 = ((double)var23 - var17) / (var11 / 2.0D);
056                            double var28 = ((double)var22 - var19) / (var13 / 2.0D);
057                            double var30 = var24 * var24 + var26 * var26 + var28 * var28;
058
059                            if (var30 < 1.0D)
060                            {
061                                var6[(var21 * 16 + var22) * 8 + var23] = true;
062                            }
063                        }
064                    }
065                }
066            }
067
068            int var10;
069            int var32;
070            boolean var33;
071
072            for (var8 = 0; var8 < 16; ++var8)
073            {
074                for (var32 = 0; var32 < 16; ++var32)
075                {
076                    for (var10 = 0; var10 < 8; ++var10)
077                    {
078                        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)]);
079
080                        if (var33)
081                        {
082                            Material var12 = par1World.getBlockMaterial(par3 + var8, par4 + var10, par5 + var32);
083
084                            if (var10 >= 4 && var12.isLiquid())
085                            {
086                                return false;
087                            }
088
089                            if (var10 < 4 && !var12.isSolid() && par1World.getBlockId(par3 + var8, par4 + var10, par5 + var32) != this.blockIndex)
090                            {
091                                return false;
092                            }
093                        }
094                    }
095                }
096            }
097
098            for (var8 = 0; var8 < 16; ++var8)
099            {
100                for (var32 = 0; var32 < 16; ++var32)
101                {
102                    for (var10 = 0; var10 < 8; ++var10)
103                    {
104                        if (var6[(var8 * 16 + var32) * 8 + var10])
105                        {
106                            par1World.setBlock(par3 + var8, par4 + var10, par5 + var32, var10 >= 4 ? 0 : this.blockIndex);
107                        }
108                    }
109                }
110            }
111
112            for (var8 = 0; var8 < 16; ++var8)
113            {
114                for (var32 = 0; var32 < 16; ++var32)
115                {
116                    for (var10 = 4; var10 < 8; ++var10)
117                    {
118                        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)
119                        {
120                            BiomeGenBase var35 = par1World.getBiomeGenForCoords(par3 + var8, par5 + var32);
121
122                            if (var35.topBlock == Block.mycelium.blockID)
123                            {
124                                par1World.setBlock(par3 + var8, par4 + var10 - 1, par5 + var32, Block.mycelium.blockID);
125                            }
126                            else
127                            {
128                                par1World.setBlock(par3 + var8, par4 + var10 - 1, par5 + var32, Block.grass.blockID);
129                            }
130                        }
131                    }
132                }
133            }
134
135            if (Block.blocksList[this.blockIndex].blockMaterial == Material.lava)
136            {
137                for (var8 = 0; var8 < 16; ++var8)
138                {
139                    for (var32 = 0; var32 < 16; ++var32)
140                    {
141                        for (var10 = 0; var10 < 8; ++var10)
142                        {
143                            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)]);
144
145                            if (var33 && (var10 < 4 || par2Random.nextInt(2) != 0) && par1World.getBlockMaterial(par3 + var8, par4 + var10, par5 + var32).isSolid())
146                            {
147                                par1World.setBlock(par3 + var8, par4 + var10, par5 + var32, Block.stone.blockID);
148                            }
149                        }
150                    }
151                }
152            }
153
154            if (Block.blocksList[this.blockIndex].blockMaterial == Material.water)
155            {
156                for (var8 = 0; var8 < 16; ++var8)
157                {
158                    for (var32 = 0; var32 < 16; ++var32)
159                    {
160                        byte var34 = 4;
161
162                        if (par1World.isBlockFreezable(par3 + var8, par4 + var34, par5 + var32))
163                        {
164                            par1World.setBlock(par3 + var8, par4 + var34, par5 + var32, Block.ice.blockID);
165                        }
166                    }
167                }
168            }
169
170            return true;
171        }
172    }
173}