package net.minecraft.world.gen.feature;
import java.util.Random;
import net.minecraft.block.Block;
import net.minecraft.block.BlockSapling;
import net.minecraft.util.Direction;
import net.minecraft.world.World;
import net.minecraftforge.common.ForgeDirection;
public class WorldGenTrees extends WorldGenerator
{
/** The minimum height of a generated tree. */
private final int minTreeHeight;
/** True if this tree should grow Vines. */
private final boolean vinesGrow;
/** The metadata value of the wood to use in tree generation. */
private final int metaWood;
/** The metadata value of the leaves to use in tree generation. */
private final int metaLeaves;
public WorldGenTrees(boolean par1)
{
this(par1, 4, 0, 0, false);
}
public WorldGenTrees(boolean par1, int par2, int par3, int par4, boolean par5)
{
super(par1);
this.minTreeHeight = par2;
this.metaWood = par3;
this.metaLeaves = par4;
this.vinesGrow = par5;
}
public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
{
int l = par2Random.nextInt(3) + this.minTreeHeight;
boolean flag = true;
if (par4 >= 1 && par4 + l + 1 <= 256)
{
int i1;
byte b0;
int j1;
int k1;
for (i1 = par4; i1 <= par4 + 1 + l; ++i1)
{
b0 = 1;
if (i1 == par4)
{
b0 = 0;
}
if (i1 >= par4 + 1 + l - 2)
{
b0 = 2;
}
for (int l1 = par3 - b0; l1 <= par3 + b0 && flag; ++l1)
{
for (j1 = par5 - b0; j1 <= par5 + b0 && flag; ++j1)
{
if (i1 >= 0 && i1 < 256)
{
k1 = par1World.getBlockId(l1, i1, j1);
Block block = Block.blocksList[k1];
if (k1 != 0 &&
!block.isLeaves(par1World, l1, i1, j1) &&
k1 != Block.grass.blockID &&
k1 != Block.dirt.blockID &&
!block.isWood(par1World, l1, i1, j1))
{
flag = false;
}
}
else
{
flag = false;
}
}
}
}
if (!flag)
{
return false;
}
else
{
i1 = par1World.getBlockId(par3, par4 - 1, par5);
Block soil = Block.blocksList[i1];
boolean isSoil = (soil != null && soil.canSustainPlant(par1World, par3, par4 - 1, par5, ForgeDirection.UP, (BlockSapling)Block.sapling));
if (isSoil && par4 < 256 - l - 1)
{
soil.onPlantGrow(par1World, par3, par4 - 1, par5, par3, par4, par5);
b0 = 3;
byte b1 = 0;
int i2;
int j2;
int k2;
for (j1 = par4 - b0 + l; j1 <= par4 + l; ++j1)
{
k1 = j1 - (par4 + l);
i2 = b1 + 1 - k1 / 2;
for (j2 = par3 - i2; j2 <= par3 + i2; ++j2)
{
k2 = j2 - par3;
for (int l2 = par5 - i2; l2 <= par5 + i2; ++l2)
{
int i3 = l2 - par5;
if (Math.abs(k2) != i2 || Math.abs(i3) != i2 || par2Random.nextInt(2) != 0 && k1 != 0)
{
int j3 = par1World.getBlockId(j2, j1, l2);
Block block = Block.blocksList[j3];
if (block == null || block.canBeReplacedByLeaves(par1World, j2, j1, l2))
{
this.setBlockAndMetadata(par1World, j2, j1, l2, Block.leaves.blockID, this.metaLeaves);
}
}
}
}
}
for (j1 = 0; j1 < l; ++j1)
{
k1 = par1World.getBlockId(par3, par4 + j1, par5);
Block block = Block.blocksList[k1];
if (k1 == 0 || block == null || block.isLeaves(par1World, par3, par4 + j1, par5))
{
this.setBlockAndMetadata(par1World, par3, par4 + j1, par5, Block.wood.blockID, this.metaWood);
if (this.vinesGrow && j1 > 0)
{
if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 - 1, par4 + j1, par5))
{
this.setBlockAndMetadata(par1World, par3 - 1, par4 + j1, par5, Block.vine.blockID, 8);
}
if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 1, par4 + j1, par5))
{
this.setBlockAndMetadata(par1World, par3 + 1, par4 + j1, par5, Block.vine.blockID, 2);
}
if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + j1, par5 - 1))
{
this.setBlockAndMetadata(par1World, par3, par4 + j1, par5 - 1, Block.vine.blockID, 1);
}
if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + j1, par5 + 1))
{
this.setBlockAndMetadata(par1World, par3, par4 + j1, par5 + 1, Block.vine.blockID, 4);
}
}
}
}
if (this.vinesGrow)
{
for (j1 = par4 - 3 + l; j1 <= par4 + l; ++j1)
{
k1 = j1 - (par4 + l);
i2 = 2 - k1 / 2;
for (j2 = par3 - i2; j2 <= par3 + i2; ++j2)
{
for (k2 = par5 - i2; k2 <= par5 + i2; ++k2)
{
Block block = Block.blocksList[par1World.getBlockId(j2, j1, k2)];
if (block != null && block.isLeaves(par1World, j2, j1, k2))
{
if (par2Random.nextInt(4) == 0 && par1World.getBlockId(j2 - 1, j1, k2) == 0)
{
this.growVines(par1World, j2 - 1, j1, k2, 8);
}
if (par2Random.nextInt(4) == 0 && par1World.getBlockId(j2 + 1, j1, k2) == 0)
{
this.growVines(par1World, j2 + 1, j1, k2, 2);
}
if (par2Random.nextInt(4) == 0 && par1World.getBlockId(j2, j1, k2 - 1) == 0)
{
this.growVines(par1World, j2, j1, k2 - 1, 1);
}
if (par2Random.nextInt(4) == 0 && par1World.getBlockId(j2, j1, k2 + 1) == 0)
{
this.growVines(par1World, j2, j1, k2 + 1, 4);
}
}
}
}
}
if (par2Random.nextInt(5) == 0 && l > 5)
{
for (j1 = 0; j1 < 2; ++j1)
{
for (k1 = 0; k1 < 4; ++k1)
{
if (par2Random.nextInt(4 - j1) == 0)
{
i2 = par2Random.nextInt(3);
this.setBlockAndMetadata(par1World, par3 + Direction.offsetX[Direction.rotateOpposite[k1]], par4 + l - 5 + j1, par5 + Direction.offsetZ[Direction.rotateOpposite[k1]], Block.cocoaPlant.blockID, i2 << 2 | k1);
}
}
}
}
}
return true;
}
else
{
return false;
}
}
}
else
{
return false;
}
}
/**
* Grows vines downward from the given block for a given length. Args: World, x, starty, z, vine-length
*/
private void growVines(World par1World, int par2, int par3, int par4, int par5)
{
this.setBlockAndMetadata(par1World, par2, par3, par4, Block.vine.blockID, par5);
int i1 = 4;
while (true)
{
--par3;
if (par1World.getBlockId(par2, par3, par4) != 0 || i1 <= 0)
{
return;
}
this.setBlockAndMetadata(par1World, par2, par3, par4, Block.vine.blockID, par5);
--i1;
}
}
}