/*
* This file is part of Vanilla.
*
* Copyright (c) 2011 Spout LLC <http://www.spout.org/>
* Vanilla is licensed under the Spout License Version 1.
*
* Vanilla is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* In addition, 180 days after any changes are published, you can use the
* software, incorporating those changes, under the terms of the MIT license,
* as described in the Spout License Version 1.
*
* Vanilla is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
* more details.
*
* You should have received a copy of the GNU Lesser General Public License,
* the MIT license and the Spout License Version 1 along with this program.
* If not, see <http://www.gnu.org/licenses/> for the GNU Lesser General Public
* License and see <http://spout.in/licensev1> for the full license, including
* the MIT license.
*/
package org.spout.vanilla.world.generator.normal.decorator;
import java.util.Random;
import org.spout.api.geo.World;
import org.spout.api.geo.cuboid.Block;
import org.spout.api.geo.cuboid.Chunk;
import org.spout.api.material.block.BlockFace;
import org.spout.vanilla.material.VanillaMaterials;
import org.spout.vanilla.material.block.plant.TallGrass;
import org.spout.vanilla.world.generator.decorator.VariableAmountDecorator;
import org.spout.vanilla.world.lighting.VanillaLighting;
public class TallGrassDecorator extends VariableAmountDecorator {
private TallGrassFactory factory;
public TallGrassDecorator() {
super(1, 0);
}
@Override
public void populate(Chunk chunk, Random random) {
if (chunk.getY() != 4) {
return;
}
final World world = chunk.getWorld();
final int amount = getAmount(random);
for (byte count = 0; count < amount; count++) {
final int x = chunk.getBlockX(random);
final int z = chunk.getBlockZ(random);
for (byte size = 30; size > 0; size--) {
final int xx = x - 7 + random.nextInt(15);
final int zz = z - 7 + random.nextInt(15);
final int yy = getHighestWorkableBlock(world, xx, zz);
if (yy != -1 && world.getBlockMaterial(xx, yy, zz) == VanillaMaterials.AIR
&& canTallGrassStay(world.getBlock(xx, yy, zz))) {
final TallGrass grass = factory.make(random);
world.setBlockMaterial(xx, yy, zz, grass, grass.getData(), null);
}
}
}
}
// TODO: this needs to be added to tall grass itself (valid for flowers too)
private boolean canTallGrassStay(Block block) {
return (VanillaLighting.getLight(block) > 7 || block.isAtSurface())
&& block.translate(BlockFace.BOTTOM).getMaterial().isMaterial(VanillaMaterials.GRASS, VanillaMaterials.DIRT, VanillaMaterials.FARMLAND);
}
private int getHighestWorkableBlock(World world, int x, int z) {
int y = world.getSurfaceHeight(x, z);
while (world.getBlockMaterial(x, y, z).isMaterial(VanillaMaterials.AIR, VanillaMaterials.LEAVES)) {
if (--y <= 0) {
return -1;
}
}
return ++y;
}
public void setFactory(TallGrassFactory factory) {
this.factory = factory;
}
public static interface TallGrassFactory {
public TallGrass make(Random random);
}
}