60 lines
2.3 KiB
Java
60 lines
2.3 KiB
Java
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package net.minecraft.client.renderer.block.model;
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import com.google.common.base.Splitter;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Objects;
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import java.util.Map.Entry;
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import java.util.function.Predicate;
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import javax.annotation.Nullable;
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import net.minecraft.world.level.block.state.StateDefinition;
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import net.minecraft.world.level.block.state.StateHolder;
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import net.minecraft.world.level.block.state.properties.Property;
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import net.minecraftforge.api.distmarker.Dist;
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import net.minecraftforge.api.distmarker.OnlyIn;
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@OnlyIn(Dist.CLIENT)
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public class VariantSelector {
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private static final Splitter COMMA_SPLITTER = Splitter.on(',');
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private static final Splitter EQUAL_SPLITTER = Splitter.on('=').limit(2);
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public static <O, S extends StateHolder<O, S>> Predicate<StateHolder<O, S>> predicate(StateDefinition<O, S> p_365883_, String p_368935_) {
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Map<Property<?>, Comparable<?>> map = new HashMap<>();
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for (String s : COMMA_SPLITTER.split(p_368935_)) {
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Iterator<String> iterator = EQUAL_SPLITTER.split(s).iterator();
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if (iterator.hasNext()) {
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String s1 = iterator.next();
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Property<?> property = p_365883_.getProperty(s1);
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if (property != null && iterator.hasNext()) {
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String s2 = iterator.next();
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Comparable<?> comparable = getValueHelper(property, s2);
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if (comparable == null) {
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throw new RuntimeException("Unknown value: '" + s2 + "' for blockstate property: '" + s1 + "' " + property.getPossibleValues());
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}
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map.put(property, comparable);
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} else if (!s1.isEmpty()) {
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throw new RuntimeException("Unknown blockstate property: '" + s1 + "'");
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}
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}
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}
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return p_368300_ -> {
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for (Entry<Property<?>, Comparable<?>> entry : map.entrySet()) {
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if (!Objects.equals(p_368300_.getValue(entry.getKey()), entry.getValue())) {
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return false;
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}
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}
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return true;
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};
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}
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@Nullable
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private static <T extends Comparable<T>> T getValueHelper(Property<T> p_365874_, String p_369794_) {
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return p_365874_.getValue(p_369794_).orElse(null);
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}
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}
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