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RandomOffsetPattern.java
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RandomOffsetPattern.java
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package com.fastasyncworldedit.core.function.pattern;
import com.fastasyncworldedit.core.math.MutableBlockVector3;
import com.sk89q.worldedit.WorldEditException;
import com.sk89q.worldedit.extent.Extent;
import com.sk89q.worldedit.function.pattern.AbstractPattern;
import com.sk89q.worldedit.function.pattern.Pattern;
import com.sk89q.worldedit.math.BlockVector3;
import com.sk89q.worldedit.world.block.BaseBlock;
import com.sk89q.worldedit.world.block.BlockTypes;
import java.util.SplittableRandom;
public class RandomOffsetPattern extends AbstractPattern {
private final int dx;
private final int dy;
private final int dz;
private final int minY;
private final int maxY;
private final Pattern pattern;
private final transient int dx2;
private final transient int dy2;
private final transient int dz2;
private final transient MutableBlockVector3 mutable = new MutableBlockVector3();
private final transient SplittableRandom r;
/**
* Create a new {@link Pattern} instance
*
* @param pattern pattern to apply
* @param dx offset x
* @param dy offset y
* @param dz offset z
* @param minY min applicable y (inclusive)
* @param maxY max applicable y (inclusive)
*/
public RandomOffsetPattern(Pattern pattern, int dx, int dy, int dz, int minY, int maxY) {
this.pattern = pattern;
this.dx = dx;
this.dy = dy;
this.dz = dz;
this.dx2 = dx * 2 + 1;
this.dy2 = dy * 2 + 1;
this.dz2 = dz * 2 + 1;
this.r = new SplittableRandom();
this.minY = minY;
this.maxY = maxY;
}
@Override
public BaseBlock applyBlock(BlockVector3 position) {
mutable.mutX((position.getX() + r.nextInt(dx2) - dx));
mutable.mutY((position.getY() + r.nextInt(dy2) - dy));
mutable.mutZ((position.getZ() + r.nextInt(dz2) - dz));
if (mutable.getY() < minY || mutable.getY() > maxY) {
return BlockTypes.AIR.getDefaultState().toBaseBlock();
}
return pattern.applyBlock(mutable);
}
@Override
public boolean apply(Extent extent, BlockVector3 get, BlockVector3 set) throws WorldEditException {
mutable.mutX((set.getX() + r.nextInt(dx2) - dx));
mutable.mutY((set.getY() + r.nextInt(dy2) - dy));
mutable.mutZ((set.getZ() + r.nextInt(dz2) - dz));
if (mutable.getY() < extent.getMinY() || mutable.getY() > extent.getMaxY()) {
return false;
}
return pattern.apply(extent, get, mutable);
}
@Override
public Pattern fork() {
return new RandomOffsetPattern(this.pattern.fork(), this.dx, this.dy, this.dz, this.minY, this.maxY);
}
}