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Ensure material and modifier tags sync over the network
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src/main/java/slimeknights/tconstruct/library/utils/GenericTagUtil.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package slimeknights.tconstruct.library.utils; | ||
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| import com.google.common.collect.ImmutableList; | ||
| import com.google.common.collect.ImmutableMap; | ||
| import com.google.common.collect.ImmutableSet; | ||
| import com.google.common.collect.ImmutableSet.Builder; | ||
| import net.minecraft.core.Registry; | ||
| import net.minecraft.network.FriendlyByteBuf; | ||
| import net.minecraft.resources.ResourceKey; | ||
| import net.minecraft.resources.ResourceLocation; | ||
| import net.minecraft.tags.Tag; | ||
| import net.minecraft.tags.TagKey; | ||
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|
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| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Map.Entry; | ||
| import java.util.Set; | ||
| import java.util.function.Function; | ||
| import java.util.stream.Collectors; | ||
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|
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| /** Static helpers for generic tag loading */ | ||
| public class GenericTagUtil { | ||
| private GenericTagUtil() {} | ||
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| /** Creates a map of reverse tags for the given map of tags */ | ||
| public static <T, I extends ResourceLocation> Map<I,Set<TagKey<T>>> reverseTags(ResourceKey<? extends Registry<T>> registry, Function<T,I> keyMapper, Map<ResourceLocation,Tag<T>> tags) { | ||
| Map<I,ImmutableSet.Builder<TagKey<T>>> reverseTags = new HashMap<>(); | ||
| Function<I,Builder<TagKey<T>>> makeSet = id -> ImmutableSet.builder(); | ||
| for (Entry<ResourceLocation,Tag<T>> entry : tags.entrySet()) { | ||
| TagKey<T> key = TagKey.create(registry, entry.getKey()); | ||
| for (T value : entry.getValue().getValues()) { | ||
| reverseTags.computeIfAbsent(keyMapper.apply(value), makeSet).add(key); | ||
| } | ||
| } | ||
| return reverseTags.entrySet().stream() | ||
| .collect(Collectors.toMap(Entry::getKey, entry->entry.getValue().build())); | ||
| } | ||
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| /** Decodes a map of tags from the packet */ | ||
| public static <T> Map<ResourceLocation,Tag<T>> decodeTags(FriendlyByteBuf buf, Function<ResourceLocation,T> valueGetter) { | ||
| ImmutableMap.Builder<ResourceLocation,Tag<T>> builder = ImmutableMap.builder(); | ||
| int mapSize = buf.readVarInt(); | ||
| for (int i = 0; i < mapSize; i++) { | ||
| ResourceLocation tagId = buf.readResourceLocation(); | ||
| int tagSize = buf.readVarInt(); | ||
| ImmutableList.Builder<T> tagBuilder = ImmutableList.builder(); | ||
| for (int j = 0; j < tagSize; j++) { | ||
| tagBuilder.add(valueGetter.apply(buf.readResourceLocation())); | ||
| } | ||
| builder.put(tagId, new Tag<>(tagBuilder.build())); | ||
| } | ||
| return builder.build(); | ||
| } | ||
|
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| /** Writes a map of tags to a packet */ | ||
| public static <T> void encodeTags(FriendlyByteBuf buf, Function<T,ResourceLocation> keyGetter, Map<ResourceLocation,Tag<T>> tags) { | ||
| buf.writeVarInt(tags.size()); | ||
| for (Entry<ResourceLocation,Tag<T>> entry : tags.entrySet()) { | ||
| buf.writeResourceLocation(entry.getKey()); | ||
| List<T> values = entry.getValue().getValues(); | ||
| buf.writeVarInt(values.size()); | ||
| for (T value : values) { | ||
| buf.writeResourceLocation(keyGetter.apply(value)); | ||
| } | ||
| } | ||
| } | ||
| } |
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