minecraft-src/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java

package net.minecraft.world.entity.vehicle;

import net.minecraft.core.NonNullList;
import net.minecraft.resources.ResourceKey;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.world.Containers;
import net.minecraft.world.InteractionHand;
import net.minecraft.world.InteractionResult;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.SlotAccess;
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.level.Level;
import net.minecraft.world.level.storage.ValueInput;
import net.minecraft.world.level.storage.ValueOutput;
import net.minecraft.world.level.storage.loot.LootTable;
import net.minecraft.world.phys.Vec3;
import org.jetbrains.annotations.Nullable;

public abstract class AbstractMinecartContainer extends AbstractMinecart implements ContainerEntity {
	private NonNullList<ItemStack> itemStacks = NonNullList.withSize(36, ItemStack.EMPTY);
	@Nullable
	private ResourceKey<LootTable> lootTable;
	private long lootTableSeed;

	protected AbstractMinecartContainer(EntityType<?> entityType, Level level) {
		super(entityType, level);
	}

	@Override
	public void destroy(ServerLevel level, DamageSource damageSource) {
		super.destroy(level, damageSource);
		this.chestVehicleDestroyed(damageSource, level, this);
	}

	@Override
	public ItemStack getItem(int slot) {
		return this.getChestVehicleItem(slot);
	}

	@Override
	public ItemStack removeItem(int slot, int amount) {
		return this.removeChestVehicleItem(slot, amount);
	}

	@Override
	public ItemStack removeItemNoUpdate(int slot) {
		return this.removeChestVehicleItemNoUpdate(slot);
	}

	@Override
	public void setItem(int slot, ItemStack stack) {
		this.setChestVehicleItem(slot, stack);
	}

	@Override
	public SlotAccess getSlot(int slot) {
		return this.getChestVehicleSlot(slot);
	}

	@Override
	public void setChanged() {
	}

	@Override
	public boolean stillValid(Player player) {
		return this.isChestVehicleStillValid(player);
	}

	@Override
	public void remove(Entity.RemovalReason reason) {
		if (!this.level().isClientSide && reason.shouldDestroy()) {
			Containers.dropContents(this.level(), this, this);
		}

		super.remove(reason);
	}

	@Override
	protected void addAdditionalSaveData(ValueOutput output) {
		super.addAdditionalSaveData(output);
		this.addChestVehicleSaveData(output);
	}

	@Override
	protected void readAdditionalSaveData(ValueInput input) {
		super.readAdditionalSaveData(input);
		this.readChestVehicleSaveData(input);
	}

	@Override
	public InteractionResult interact(Player player, InteractionHand hand) {
		return this.interactWithContainerVehicle(player);
	}

	@Override
	protected Vec3 applyNaturalSlowdown(Vec3 speed) {
		float f = 0.98F;
		if (this.lootTable == null) {
			int i = 15 - AbstractContainerMenu.getRedstoneSignalFromContainer(this);
			f += i * 0.001F;
		}

		if (this.isInWater()) {
			f *= 0.95F;
		}

		return speed.multiply(f, 0.0, f);
	}

	@Override
	public void clearContent() {
		this.clearChestVehicleContent();
	}

	public void setLootTable(ResourceKey<LootTable> lootTable, long seed) {
		this.lootTable = lootTable;
		this.lootTableSeed = seed;
	}

	@Nullable
	@Override
	public AbstractContainerMenu createMenu(int i, Inventory inventory, Player player) {
		if (this.lootTable != null && player.isSpectator()) {
			return null;
		} else {
			this.unpackChestVehicleLootTable(inventory.player);
			return this.createMenu(i, inventory);
		}
	}

	protected abstract AbstractContainerMenu createMenu(int containerId, Inventory playerInventory);

	@Nullable
	@Override
	public ResourceKey<LootTable> getContainerLootTable() {
		return this.lootTable;
	}

	@Override
	public void setContainerLootTable(@Nullable ResourceKey<LootTable> lootTable) {
		this.lootTable = lootTable;
	}

	@Override
	public long getContainerLootTableSeed() {
		return this.lootTableSeed;
	}

	@Override
	public void setContainerLootTableSeed(long lootTableSeed) {
		this.lootTableSeed = lootTableSeed;
	}

	@Override
	public NonNullList<ItemStack> getItemStacks() {
		return this.itemStacks;
	}

	@Override
	public void clearItemStacks() {
		this.itemStacks = NonNullList.withSize(this.getContainerSize(), ItemStack.EMPTY);
	}
}