minecraft-src/net/minecraft/world/level/block/entity/BannerBlockEntity.java
2025-07-04 02:00:41 +03:00

128 lines
4.2 KiB
Java

package net.minecraft.world.level.block.entity;
import com.mojang.logging.LogUtils;
import net.minecraft.core.BlockPos;
import net.minecraft.core.HolderLookup;
import net.minecraft.core.component.DataComponents;
import net.minecraft.core.component.DataComponentMap.Builder;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.nbt.NbtOps;
import net.minecraft.network.chat.Component;
import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket;
import net.minecraft.world.Nameable;
import net.minecraft.world.item.DyeColor;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.block.AbstractBannerBlock;
import net.minecraft.world.level.block.BannerBlock;
import net.minecraft.world.level.block.state.BlockState;
import org.jetbrains.annotations.Nullable;
import org.slf4j.Logger;
public class BannerBlockEntity extends BlockEntity implements Nameable {
private static final Logger LOGGER = LogUtils.getLogger();
public static final int MAX_PATTERNS = 6;
private static final String TAG_PATTERNS = "patterns";
@Nullable
private Component name;
private DyeColor baseColor;
/**
* A list of all patterns stored on this banner.
*/
private BannerPatternLayers patterns = BannerPatternLayers.EMPTY;
public BannerBlockEntity(BlockPos pos, BlockState blockState) {
super(BlockEntityType.BANNER, pos, blockState);
this.baseColor = ((AbstractBannerBlock)blockState.getBlock()).getColor();
}
public BannerBlockEntity(BlockPos pos, BlockState blockState, DyeColor baseColor) {
this(pos, blockState);
this.baseColor = baseColor;
}
public void fromItem(ItemStack stack, DyeColor color) {
this.baseColor = color;
this.applyComponentsFromItemStack(stack);
}
@Override
public Component getName() {
return (Component)(this.name != null ? this.name : Component.translatable("block.minecraft.banner"));
}
@Nullable
@Override
public Component getCustomName() {
return this.name;
}
@Override
protected void saveAdditional(CompoundTag tag, HolderLookup.Provider registries) {
super.saveAdditional(tag, registries);
if (!this.patterns.equals(BannerPatternLayers.EMPTY)) {
tag.put("patterns", BannerPatternLayers.CODEC.encodeStart(registries.createSerializationContext(NbtOps.INSTANCE), this.patterns).getOrThrow());
}
if (this.name != null) {
tag.putString("CustomName", Component.Serializer.toJson(this.name, registries));
}
}
@Override
protected void loadAdditional(CompoundTag tag, HolderLookup.Provider registries) {
super.loadAdditional(tag, registries);
if (tag.contains("CustomName", 8)) {
this.name = parseCustomNameSafe(tag.getString("CustomName"), registries);
}
if (tag.contains("patterns")) {
BannerPatternLayers.CODEC
.parse(registries.createSerializationContext(NbtOps.INSTANCE), tag.get("patterns"))
.resultOrPartial(string -> LOGGER.error("Failed to parse banner patterns: '{}'", string))
.ifPresent(bannerPatternLayers -> this.patterns = bannerPatternLayers);
}
}
public ClientboundBlockEntityDataPacket getUpdatePacket() {
return ClientboundBlockEntityDataPacket.create(this);
}
@Override
public CompoundTag getUpdateTag(HolderLookup.Provider registries) {
return this.saveWithoutMetadata(registries);
}
public BannerPatternLayers getPatterns() {
return this.patterns;
}
public ItemStack getItem() {
ItemStack itemStack = new ItemStack(BannerBlock.byColor(this.baseColor));
itemStack.applyComponents(this.collectComponents());
return itemStack;
}
public DyeColor getBaseColor() {
return this.baseColor;
}
@Override
protected void applyImplicitComponents(BlockEntity.DataComponentInput componentInput) {
super.applyImplicitComponents(componentInput);
this.patterns = componentInput.getOrDefault(DataComponents.BANNER_PATTERNS, BannerPatternLayers.EMPTY);
this.name = componentInput.get(DataComponents.CUSTOM_NAME);
}
@Override
protected void collectImplicitComponents(Builder components) {
super.collectImplicitComponents(components);
components.set(DataComponents.BANNER_PATTERNS, this.patterns);
components.set(DataComponents.CUSTOM_NAME, this.name);
}
@Override
public void removeComponentsFromTag(CompoundTag tag) {
tag.remove("patterns");
tag.remove("CustomName");
}
}