/*
* WorldEdit, a Minecraft world manipulation toolkit
* Copyright (C) sk89q <http://www.sk89q.com>
* Copyright (C) WorldEdit team and contributors
*
* This program 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.
*
* This program 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.sk89q.worldedit.command.tool.brush;
import com.sk89q.worldedit.EditSession;
import com.sk89q.worldedit.MaxChangedBlocksException;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.blocks.BaseBlock;
import com.sk89q.worldedit.blocks.BlockID;
import com.sk89q.worldedit.function.pattern.Pattern;
import java.util.*;
public class GravityBrush implements Brush {
private final boolean fullHeight;
public GravityBrush(boolean fullHeight) {
this.fullHeight = fullHeight;
}
@Override
public void build(EditSession editSession, Vector position, Pattern pattern, double size) throws MaxChangedBlocksException {
final BaseBlock air = new BaseBlock(BlockID.AIR, 0);
final double startY = fullHeight ? editSession.getWorld().getMaxY() : position.getBlockY() + size;
for (double x = position.getBlockX() + size; x > position.getBlockX() - size; --x) {
for (double z = position.getBlockZ() + size; z > position.getBlockZ() - size; --z) {
double y = startY;
final List<BaseBlock> blockTypes = new ArrayList<BaseBlock>();
for (; y > position.getBlockY() - size; --y) {
final Vector pt = new Vector(x, y, z);
final BaseBlock block = editSession.getBlock(pt);
if (!block.isAir()) {
blockTypes.add(block);
editSession.setBlock(pt, air);
}
}
Vector pt = new Vector(x, y, z);
Collections.reverse(blockTypes);
for (int i = 0; i < blockTypes.size();) {
if (editSession.getBlock(pt).getType() == BlockID.AIR) {
editSession.setBlock(pt, blockTypes.get(i++));
}
pt = pt.add(0, 1, 0);
}
}
}
}
}