97 lines
3.5 KiB
Java
97 lines
3.5 KiB
Java
package net.minecraft.commands.arguments;
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import com.google.common.collect.Maps;
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import com.mojang.brigadier.StringReader;
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import com.mojang.brigadier.arguments.ArgumentType;
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import com.mojang.brigadier.context.CommandContext;
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import com.mojang.brigadier.exceptions.CommandSyntaxException;
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import com.mojang.brigadier.exceptions.DynamicCommandExceptionType;
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import com.mojang.brigadier.suggestion.Suggestions;
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import com.mojang.brigadier.suggestion.SuggestionsBuilder;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Map;
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import java.util.concurrent.CompletableFuture;
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import java.util.function.BiFunction;
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import net.minecraft.Util;
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import net.minecraft.commands.CommandSourceStack;
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import net.minecraft.commands.SharedSuggestionProvider;
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import net.minecraft.network.chat.Component;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.phys.Vec3;
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import org.jetbrains.annotations.Nullable;
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public class EntityAnchorArgument implements ArgumentType<EntityAnchorArgument.Anchor> {
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private static final Collection<String> EXAMPLES = Arrays.asList("eyes", "feet");
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private static final DynamicCommandExceptionType ERROR_INVALID = new DynamicCommandExceptionType(
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object -> Component.translatableEscape("argument.anchor.invalid", object)
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);
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public static EntityAnchorArgument.Anchor getAnchor(CommandContext<CommandSourceStack> context, String name) {
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return context.getArgument(name, EntityAnchorArgument.Anchor.class);
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}
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public static EntityAnchorArgument anchor() {
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return new EntityAnchorArgument();
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}
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public EntityAnchorArgument.Anchor parse(StringReader reader) throws CommandSyntaxException {
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int i = reader.getCursor();
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String string = reader.readUnquotedString();
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EntityAnchorArgument.Anchor anchor = EntityAnchorArgument.Anchor.getByName(string);
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if (anchor == null) {
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reader.setCursor(i);
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throw ERROR_INVALID.createWithContext(reader, string);
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} else {
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return anchor;
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}
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}
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@Override
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public <S> CompletableFuture<Suggestions> listSuggestions(CommandContext<S> commandContext, SuggestionsBuilder suggestionsBuilder) {
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return SharedSuggestionProvider.suggest(EntityAnchorArgument.Anchor.BY_NAME.keySet(), suggestionsBuilder);
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}
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@Override
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public Collection<String> getExamples() {
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return EXAMPLES;
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}
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public static enum Anchor {
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FEET("feet", (vec3, entity) -> vec3),
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EYES("eyes", (vec3, entity) -> new Vec3(vec3.x, vec3.y + entity.getEyeHeight(), vec3.z));
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static final Map<String, EntityAnchorArgument.Anchor> BY_NAME = Util.make(Maps.<String, EntityAnchorArgument.Anchor>newHashMap(), hashMap -> {
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for (EntityAnchorArgument.Anchor anchor : values()) {
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hashMap.put(anchor.name, anchor);
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}
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});
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private final String name;
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private final BiFunction<Vec3, Entity, Vec3> transform;
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private Anchor(final String name, final BiFunction<Vec3, Entity, Vec3> transform) {
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this.name = name;
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this.transform = transform;
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}
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@Nullable
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public static EntityAnchorArgument.Anchor getByName(String name) {
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return (EntityAnchorArgument.Anchor)BY_NAME.get(name);
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}
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/**
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* Gets the coordinate based on the given entity's position.
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*/
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public Vec3 apply(Entity entity) {
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return (Vec3)this.transform.apply(entity.position(), entity);
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}
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/**
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* Gets the coordinate based on the given command source's position. If the source is not an entity, no offsetting occurs.
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*/
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public Vec3 apply(CommandSourceStack source) {
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Entity entity = source.getEntity();
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return entity == null ? source.getPosition() : (Vec3)this.transform.apply(source.getPosition(), entity);
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}
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}
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}
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