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create GaussianRandomLocator

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dfsek
2021-12-15 21:22:41 -07:00
parent 353f5a1f26
commit 7305236724
1 changed files with 52 additions and 0 deletions
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common/addons/config-locators/src/main/java/com/dfsek/terra/addons/feature/locator/locators/GaussianRandomLocator.java Normal file
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/*
* Copyright (c) 2020-2021 Polyhedral Development
*
* The Terra Core Addons are licensed under the terms of the MIT License. For more details,
* reference the LICENSE file in this module's root directory.
*/
package com.dfsek.terra.addons.feature.locator.locators;
import java.util.Random;
import com.dfsek.terra.api.structure.feature.BinaryColumn;
import com.dfsek.terra.api.structure.feature.Locator;
import com.dfsek.terra.api.util.Range;
import com.dfsek.terra.api.world.chunk.generation.util.Column;
public class GaussianRandomLocator implements Locator {
private final double mean;
private final Range points;
private final double standardDeviation;
public GaussianRandomLocator(Range height, Range points, double standardDeviation) {
this.mean = (height.getMax() + height.getMin()) / 2.0;
this.points = points;
this.standardDeviation = standardDeviation;
}
@Override
public BinaryColumn getSuitableCoordinates(Column<?> column) {
long seed = column.getWorld().getSeed();
seed = 31 * seed + column.getX();
seed = 31 * seed + column.getZ();
Random r = new Random(seed);
int size = points.get(r);
BinaryColumn results = new BinaryColumn(column.getMinY(), column.getMaxY());
for(int i = 0; i < size; i++) {
int h = (int) r.nextGaussian(mean, standardDeviation);
if(h >= column.getMaxY() || h < column.getMinY()) continue;
results.set(h);
}
return results;
}
}