114 lines
3.7 KiB
Java
114 lines
3.7 KiB
Java
/*
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* This file is part of BlueMap, licensed under the MIT License (MIT).
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*
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* Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
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* Copyright (c) contributors
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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
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* all 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
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* THE SOFTWARE.
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*/
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package de.bluecolored.bluemap.core.resources.resourcepack.blockstate;
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import com.google.gson.Gson;
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import com.google.gson.annotations.JsonAdapter;
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.JsonToken;
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import de.bluecolored.bluemap.api.debug.DebugDump;
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import de.bluecolored.bluemap.core.resources.AbstractTypeAdapterFactory;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.function.Consumer;
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@SuppressWarnings("FieldMayBeFinal")
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@DebugDump
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@JsonAdapter(VariantSet.Adapter.class)
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public class VariantSet {
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private BlockStateCondition condition;
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private Variant[] variants;
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private transient double totalWeight;
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public VariantSet(Variant... variants) {
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this(BlockStateCondition.all(), variants);
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}
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public VariantSet(BlockStateCondition condition, Variant... variants) {
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this.condition = condition;
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this.variants = variants;
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this.totalWeight = summarizeWeights();
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}
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public BlockStateCondition getCondition() {
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return condition;
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}
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public void setCondition(BlockStateCondition condition) {
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this.condition = condition;
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}
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public Variant[] getVariants() {
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return variants;
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}
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private double summarizeWeights() {
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return Arrays.stream(variants)
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.mapToDouble(Variant::getWeight)
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.sum();
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}
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public void forEach(int x, int y, int z, Consumer<Variant> consumer) {
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double selection = hashToFloat(x, y, z) * totalWeight; // random based on position
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for (Variant variant : variants) {
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selection -= variant.getWeight();
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if (selection <= 0) {
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consumer.accept(variant);
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return;
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}
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}
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}
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private static float hashToFloat(int x, int y, int z) {
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final long hash = x * 73438747L ^ y * 9357269L ^ z * 4335792L;
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return (hash * (hash + 456149) & 0x00ffffff) / (float) 0x01000000;
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}
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static class Adapter extends AbstractTypeAdapterFactory<VariantSet> {
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public Adapter() {
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super(VariantSet.class);
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}
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@Override
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public VariantSet read(JsonReader in, Gson gson) throws IOException {
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Variant[] variants;
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if (in.peek() == JsonToken.BEGIN_ARRAY) {
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variants = gson.fromJson(in, Variant[].class);
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} else {
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variants = new Variant[]{ gson.fromJson(in, Variant.class) };
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}
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return new VariantSet(variants);
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}
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}
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}
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