package net.minecraft.world.level.block.entity; import net.minecraft.core.BlockPos; import net.minecraft.core.NonNullList; import net.minecraft.core.component.DataComponentGetter; import net.minecraft.core.component.DataComponentMap; import net.minecraft.core.component.DataComponents; import net.minecraft.network.chat.Component; import net.minecraft.network.chat.ComponentSerialization; import net.minecraft.sounds.SoundEvents; import net.minecraft.sounds.SoundSource; import net.minecraft.world.Container; import net.minecraft.world.ContainerHelper; import net.minecraft.world.LockCode; import net.minecraft.world.MenuProvider; import net.minecraft.world.Nameable; import net.minecraft.world.entity.player.Inventory; import net.minecraft.world.entity.player.Player; import net.minecraft.world.inventory.AbstractContainerMenu; import net.minecraft.world.item.ItemStack; import net.minecraft.world.item.component.ItemContainerContents; import net.minecraft.world.level.block.state.BlockState; import net.minecraft.world.level.storage.ValueInput; import net.minecraft.world.level.storage.ValueOutput; import org.jetbrains.annotations.Nullable; public abstract class BaseContainerBlockEntity extends BlockEntity implements Container, MenuProvider, Nameable { private LockCode lockKey = LockCode.NO_LOCK; @Nullable private Component name; protected BaseContainerBlockEntity(BlockEntityType type, BlockPos pos, BlockState blockState) { super(type, pos, blockState); } @Override protected void loadAdditional(ValueInput input) { super.loadAdditional(input); this.lockKey = LockCode.fromTag(input); this.name = parseCustomNameSafe(input, "CustomName"); } @Override protected void saveAdditional(ValueOutput output) { super.saveAdditional(output); this.lockKey.addToTag(output); output.storeNullable("CustomName", ComponentSerialization.CODEC, this.name); } @Override public Component getName() { return this.name != null ? this.name : this.getDefaultName(); } @Override public Component getDisplayName() { return this.getName(); } @Nullable @Override public Component getCustomName() { return this.name; } protected abstract Component getDefaultName(); public boolean canOpen(Player player) { return canUnlock(player, this.lockKey, this.getDisplayName()); } public static boolean canUnlock(Player player, LockCode code, Component displayName) { if (!player.isSpectator() && !code.unlocksWith(player.getMainHandItem())) { player.displayClientMessage(Component.translatable("container.isLocked", displayName), true); player.playNotifySound(SoundEvents.CHEST_LOCKED, SoundSource.BLOCKS, 1.0F, 1.0F); return false; } else { return true; } } protected abstract NonNullList getItems(); protected abstract void setItems(NonNullList items); @Override public boolean isEmpty() { for (ItemStack itemStack : this.getItems()) { if (!itemStack.isEmpty()) { return false; } } return true; } @Override public ItemStack getItem(int slot) { return this.getItems().get(slot); } @Override public ItemStack removeItem(int slot, int amount) { ItemStack itemStack = ContainerHelper.removeItem(this.getItems(), slot, amount); if (!itemStack.isEmpty()) { this.setChanged(); } return itemStack; } @Override public ItemStack removeItemNoUpdate(int slot) { return ContainerHelper.takeItem(this.getItems(), slot); } @Override public void setItem(int slot, ItemStack stack) { this.getItems().set(slot, stack); stack.limitSize(this.getMaxStackSize(stack)); this.setChanged(); } @Override public boolean stillValid(Player player) { return Container.stillValidBlockEntity(this, player); } @Override public void clearContent() { this.getItems().clear(); } @Nullable @Override public AbstractContainerMenu createMenu(int i, Inventory inventory, Player player) { return this.canOpen(player) ? this.createMenu(i, inventory) : null; } protected abstract AbstractContainerMenu createMenu(int containerId, Inventory inventory); @Override protected void applyImplicitComponents(DataComponentGetter componentGetter) { super.applyImplicitComponents(componentGetter); this.name = componentGetter.get(DataComponents.CUSTOM_NAME); this.lockKey = componentGetter.getOrDefault(DataComponents.LOCK, LockCode.NO_LOCK); componentGetter.getOrDefault(DataComponents.CONTAINER, ItemContainerContents.EMPTY).copyInto(this.getItems()); } @Override protected void collectImplicitComponents(DataComponentMap.Builder components) { super.collectImplicitComponents(components); components.set(DataComponents.CUSTOM_NAME, this.name); if (!this.lockKey.equals(LockCode.NO_LOCK)) { components.set(DataComponents.LOCK, this.lockKey); } components.set(DataComponents.CONTAINER, ItemContainerContents.fromItems(this.getItems())); } @Override public void removeComponentsFromTag(ValueOutput output) { output.discard("CustomName"); output.discard("lock"); output.discard("Items"); } }