57 lines
2.2 KiB
Java
57 lines
2.2 KiB
Java
/*
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*
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* MIT License
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*
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* Copyright (c) 2020 TerraForged
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package com.terraforged.core.util;
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import com.terraforged.core.cell.Cell;
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import com.terraforged.core.world.heightmap.Levels;
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import com.terraforged.core.world.terrain.Terrain;
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import me.dags.noise.Module;
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import me.dags.noise.Source;
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import java.util.function.BiPredicate;
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public class VariablePredicate {
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private final Module module;
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private final BiPredicate<Cell<Terrain>, Float> predicate;
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public VariablePredicate(Module module, BiPredicate<Cell<Terrain>, Float> predicate) {
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this.module = module;
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this.predicate = predicate;
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}
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public boolean test(Cell<Terrain> cell, float x, float z) {
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return predicate.test(cell, module.getValue(x, z));
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}
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public static VariablePredicate height(Seed seed, Levels levels, int min, int max, int size, int octaves) {
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float bias = levels.scale(min);
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float scale = levels.scale(max - min);
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Module source = Source.perlin(seed.next(), size, 1).scale(scale).bias(bias);
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return new VariablePredicate(source, (cell, height) -> cell.value < height);
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}
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}
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