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ExtentBufferedCompositePattern.java
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ExtentBufferedCompositePattern.java
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/*
* 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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.sk89q.worldedit.function.pattern;
import com.sk89q.worldedit.WorldEditException;
import com.sk89q.worldedit.extent.Extent;
import com.sk89q.worldedit.extent.buffer.ExtentBuffer;
import com.sk89q.worldedit.math.BlockVector3;
import com.sk89q.worldedit.world.block.BaseBlock;
import java.util.Arrays;
import static com.google.common.base.Preconditions.checkArgument;
/**
* A pattern that composes multiple patterns consecutively, ensuring that changes from one
* pattern are realized by the subsequent one(s). For best results, use an {@link ExtentBuffer}
* to avoid changing blocks in an underlying extent (e.g. the world).
*/
public class ExtentBufferedCompositePattern extends AbstractExtentPattern {
private final Pattern[] patterns;
/**
* Construct a new instance of this pattern.
*
* <p>Note that all patterns passed which are ExtentPatterns should use the same extent as the one
* passed to this constructor, or block changes may not be realized by those patterns.</p>
*
* @param extent the extent to buffer changes to
* @param patterns the patterns to apply, in order
*/
public ExtentBufferedCompositePattern(Extent extent, Pattern... patterns) {
super(extent);
checkArgument(patterns.length != 0, "patterns cannot be empty");
this.patterns = patterns;
}
@Override
public BaseBlock applyBlock(BlockVector3 position) {
BaseBlock lastBlock = null;
for (Pattern pattern : patterns) {
lastBlock = pattern.applyBlock(position);
try {
getExtent().setBlock(position, lastBlock);
} catch (WorldEditException ignored) { // buffer doesn't throw
}
}
return lastBlock;
}
//FAWE - stateful pattern
@Override
public Pattern fork() {
final Pattern[] forkedPatterns = Arrays.stream(patterns).map(Pattern::fork).toArray(Pattern[]::new);
return new ExtentBufferedCompositePattern(getExtent(), forkedPatterns);
}
//FAWE end
}