001package net.minecraft.world.gen.feature; 002 003import java.util.Random; 004import net.minecraft.block.Block; 005import net.minecraft.block.BlockSapling; 006import net.minecraft.world.World; 007import net.minecraftforge.common.ForgeDirection; 008 009public class WorldGenForest extends WorldGenerator 010{ 011 public WorldGenForest(boolean par1) 012 { 013 super(par1); 014 } 015 016 public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5) 017 { 018 int l = par2Random.nextInt(3) + 5; 019 boolean flag = true; 020 021 if (par4 >= 1 && par4 + l + 1 <= 256) 022 { 023 int i1; 024 int j1; 025 int k1; 026 int l1; 027 028 for (i1 = par4; i1 <= par4 + 1 + l; ++i1) 029 { 030 byte b0 = 1; 031 032 if (i1 == par4) 033 { 034 b0 = 0; 035 } 036 037 if (i1 >= par4 + 1 + l - 2) 038 { 039 b0 = 2; 040 } 041 042 for (j1 = par3 - b0; j1 <= par3 + b0 && flag; ++j1) 043 { 044 for (k1 = par5 - b0; k1 <= par5 + b0 && flag; ++k1) 045 { 046 if (i1 >= 0 && i1 < 256) 047 { 048 l1 = par1World.getBlockId(j1, i1, k1); 049 050 Block block = Block.blocksList[l1]; 051 052 if (l1 != 0 && (block != null && !block.isLeaves(par1World, j1, i1, k1))) 053 { 054 flag = false; 055 } 056 } 057 else 058 { 059 flag = false; 060 } 061 } 062 } 063 } 064 065 if (!flag) 066 { 067 return false; 068 } 069 else 070 { 071 i1 = par1World.getBlockId(par3, par4 - 1, par5); 072 Block soil = Block.blocksList[i1]; 073 boolean isValidSoil = soil != null && soil.canSustainPlant(par1World, par3, par4 - 1, par5, ForgeDirection.UP, (BlockSapling)Block.sapling); 074 075 if (isValidSoil && par4 < 256 - l - 1) 076 { 077 soil.onPlantGrow(par1World, par3, par4 - 1, par5, par3, par4, par5); 078 int i2; 079 080 for (i2 = par4 - 3 + l; i2 <= par4 + l; ++i2) 081 { 082 j1 = i2 - (par4 + l); 083 k1 = 1 - j1 / 2; 084 085 for (l1 = par3 - k1; l1 <= par3 + k1; ++l1) 086 { 087 int j2 = l1 - par3; 088 089 for (int k2 = par5 - k1; k2 <= par5 + k1; ++k2) 090 { 091 int l2 = k2 - par5; 092 093 if (Math.abs(j2) != k1 || Math.abs(l2) != k1 || par2Random.nextInt(2) != 0 && j1 != 0) 094 { 095 int i3 = par1World.getBlockId(l1, i2, k2); 096 Block block = Block.blocksList[i3]; 097 098 if (block == null || block.canBeReplacedByLeaves(par1World, l1, i2, k2)) 099 { 100 this.setBlockAndMetadata(par1World, l1, i2, k2, Block.leaves.blockID, 2); 101 } 102 } 103 } 104 } 105 } 106 107 for (i2 = 0; i2 < l; ++i2) 108 { 109 j1 = par1World.getBlockId(par3, par4 + i2, par5); 110 111 Block block = Block.blocksList[j1]; 112 113 if (j1 == 0 || block == null || block.isLeaves(par1World, par3, par4 + i2, par5)) 114 { 115 this.setBlockAndMetadata(par1World, par3, par4 + i2, par5, Block.wood.blockID, 2); 116 } 117 } 118 119 return true; 120 } 121 else 122 { 123 return false; 124 } 125 } 126 } 127 else 128 { 129 return false; 130 } 131 } 132}