001package net.minecraft.world.gen.feature;
002
003import java.util.Random;
004
005import net.minecraft.block.Block;
006import net.minecraft.block.BlockSapling;
007import net.minecraft.world.World;
008import net.minecraftforge.common.ForgeDirection;
009
010public class WorldGenForest extends WorldGenerator
011{
012    public WorldGenForest(boolean par1)
013    {
014        super(par1);
015    }
016
017    public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
018    {
019        int var6 = par2Random.nextInt(3) + 5;
020        boolean var7 = true;
021
022        if (par4 >= 1 && par4 + var6 + 1 <= 256)
023        {
024            int var8;
025            int var10;
026            int var11;
027            int var12;
028
029            for (var8 = par4; var8 <= par4 + 1 + var6; ++var8)
030            {
031                byte var9 = 1;
032
033                if (var8 == par4)
034                {
035                    var9 = 0;
036                }
037
038                if (var8 >= par4 + 1 + var6 - 2)
039                {
040                    var9 = 2;
041                }
042
043                for (var10 = par3 - var9; var10 <= par3 + var9 && var7; ++var10)
044                {
045                    for (var11 = par5 - var9; var11 <= par5 + var9 && var7; ++var11)
046                    {
047                        if (var8 >= 0 && var8 < 256)
048                        {
049                            var12 = par1World.getBlockId(var10, var8, var11);
050
051                            Block block = Block.blocksList[var12];
052
053                            if (var12 != 0 && (block != null && !block.isLeaves(par1World, var10,  var8, var11)))
054                            {
055                                var7 = false;
056                            }
057                        }
058                        else
059                        {
060                            var7 = false;
061                        }
062                    }
063                }
064            }
065
066            if (!var7)
067            {
068                return false;
069            }
070            else
071            {
072                var8 = par1World.getBlockId(par3, par4 - 1, par5);
073                Block soil = Block.blocksList[var8];
074                boolean isValidSoil = soil != null && soil.canSustainPlant(par1World, par3, par4 - 1, par5, ForgeDirection.UP, (BlockSapling)Block.sapling);
075
076                if (isValidSoil && par4 < 256 - var6 - 1)
077                {
078                    soil.onPlantGrow(par1World, par3, par4 - 1, par5, par3, par4, par5);
079                    int var16;
080
081                    for (var16 = par4 - 3 + var6; var16 <= par4 + var6; ++var16)
082                    {
083                        var10 = var16 - (par4 + var6);
084                        var11 = 1 - var10 / 2;
085
086                        for (var12 = par3 - var11; var12 <= par3 + var11; ++var12)
087                        {
088                            int var13 = var12 - par3;
089
090                            for (int var14 = par5 - var11; var14 <= par5 + var11; ++var14)
091                            {
092                                int var15 = var14 - par5;
093
094                                Block block = Block.blocksList[par1World.getBlockId(var12, var16, var14)];
095                                
096                                if ((Math.abs(var13) != var11 || Math.abs(var15) != var11 || par2Random.nextInt(2) != 0 && var10 != 0) && 
097                                    (block == null || block.canBeReplacedByLeaves(par1World, var12, var16, var14)))
098                                {
099                                    this.setBlockAndMetadata(par1World, var12, var16, var14, Block.leaves.blockID, 2);
100                                }
101                            }
102                        }
103                    }
104
105                    for (var16 = 0; var16 < var6; ++var16)
106                    {
107                        var10 = par1World.getBlockId(par3, par4 + var16, par5);
108
109                        Block block = Block.blocksList[var10];
110
111                        if (var10 == 0 || block == null || block.isLeaves(par1World, par3, par4 + var16, par5))
112                        {
113                            this.setBlockAndMetadata(par1World, par3, par4 + var16, par5, Block.wood.blockID, 2);
114                        }
115                    }
116
117                    return true;
118                }
119                else
120                {
121                    return false;
122                }
123            }
124        }
125        else
126        {
127            return false;
128        }
129    }
130}