40 lines
1.6 KiB
Java
40 lines
1.6 KiB
Java
package net.minecraft.world.item.component;
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import com.mojang.serialization.Codec;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import io.netty.buffer.ByteBuf;
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import java.util.Optional;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.GlobalPos;
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import net.minecraft.network.codec.ByteBufCodecs;
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import net.minecraft.network.codec.StreamCodec;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.world.entity.ai.village.poi.PoiTypes;
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public record LodestoneTracker(Optional<GlobalPos> target, boolean tracked) {
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public static final Codec<LodestoneTracker> CODEC = RecordCodecBuilder.create(
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instance -> instance.group(
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GlobalPos.CODEC.optionalFieldOf("target").forGetter(LodestoneTracker::target),
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Codec.BOOL.optionalFieldOf("tracked", true).forGetter(LodestoneTracker::tracked)
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)
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.apply(instance, LodestoneTracker::new)
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);
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public static final StreamCodec<ByteBuf, LodestoneTracker> STREAM_CODEC = StreamCodec.composite(
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GlobalPos.STREAM_CODEC.apply(ByteBufCodecs::optional), LodestoneTracker::target, ByteBufCodecs.BOOL, LodestoneTracker::tracked, LodestoneTracker::new
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);
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public LodestoneTracker tick(ServerLevel level) {
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if (this.tracked && !this.target.isEmpty()) {
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if (((GlobalPos)this.target.get()).dimension() != level.dimension()) {
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return this;
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} else {
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BlockPos blockPos = ((GlobalPos)this.target.get()).pos();
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return level.isInWorldBounds(blockPos) && level.getPoiManager().existsAtPosition(PoiTypes.LODESTONE, blockPos)
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? this
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: new LodestoneTracker(Optional.empty(), true);
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}
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} else {
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return this;
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}
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}
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}
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