Java Code Examples for net.minecraft.item.ItemStack#damage()

private void use(PlayerEntity player, BlockState state, WorldAccess iWorld, BlockPos pos, ItemStack stack) {
    Block block = state.getBlock();
    if (block instanceof Rotatable) {
        StateManager<Block, BlockState> manager = block.getStateManager();
        Collection<Property<?>> collection = manager.getProperties();
        String string_1 = Registry.BLOCK.getId(block).toString();
        if (!collection.isEmpty()) {
            CompoundTag compoundTag_1 = stack.getOrCreateSubTag("wrenchProp");
            String string_2 = compoundTag_1.getString(string_1);
            Property<?> property = manager.getProperty(string_2);
            if (property == null) {
                property = collection.iterator().next();
            }
            if (property.getName().equals("facing")) {
                BlockState blockState_2 = cycle(state, property, player.isSneaking());
                iWorld.setBlockState(pos, blockState_2, 18);
                stack.damage(2, player, (playerEntity) -> playerEntity.sendEquipmentBreakStatus(EquipmentSlot.MAINHAND));
            }
        }
    }
}
 

@SuppressWarnings("deprecation")
@Override
public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
	ItemStack stack = player.getStackInHand(hand);
	if (stack.isEmpty() || !(stack.getItem() instanceof MiningToolItem)) {
		return ActionResult.PASS;
	}
	
	MiningToolItem tool = (MiningToolItem) stack.getItem();
	if (stripped != null && (tool.isEffectiveOn(state) || tool.getMiningSpeed(stack, state) > 1.0F)) {
		world.playSound(player, pos, SoundEvents.ITEM_AXE_STRIP, SoundCategory.BLOCKS, 1.0F, 1.0F);
		if (!world.isClient) {
			BlockState target = stripped.getDefaultState().with(LogBlock.AXIS, state.get(LogBlock.AXIS));
			world.setBlockState(pos, target);
			stack.damage(1, player, consumedPlayer -> consumedPlayer.sendToolBreakStatus(hand));
		}
		return ActionResult.SUCCESS;
	}
	return ActionResult.PASS;
}
 

@Override
public ActionResult onUse(BlockState blockState, World world, BlockPos blockPos, PlayerEntity playerEntity, Hand hand, BlockHitResult blockHitResult) {
	ItemStack stack = playerEntity.getStackInHand(hand);

	if (stack.getItem() == Items.SHEARS) {
		if (!world.isClient) {
			Direction side = blockHitResult.getSide();
			Direction facingTowardPlayer = side.getAxis() == Direction.Axis.Y ? playerEntity.getHorizontalFacing().getOpposite() : side;

			world.playSound(null, blockPos, SoundEvents.BLOCK_PUMPKIN_CARVE, SoundCategory.BLOCKS, 1.0F, 1.0F);
			world.setBlockState(blockPos, HallowedBlocks.CARVED_PUMPKIN_COLORS.get(this.color).getDefaultState().with(CarvedPumpkinBlock.FACING, facingTowardPlayer), 11);
			ItemEntity itemEntity = new ItemEntity(world, blockPos.getX() + 0.5D + facingTowardPlayer.getOffsetX() * 0.65D, blockPos.getY() + 0.1D, blockPos.getZ() + 0.5D + facingTowardPlayer.getOffsetZ() * 0.65D, new ItemStack(Items.PUMPKIN_SEEDS, 4));

			itemEntity.setVelocity(0.05D * (double) facingTowardPlayer.getOffsetX() + world.random.nextDouble() * 0.02D, 0.05D, 0.05D * (double) facingTowardPlayer.getOffsetZ() + world.random.nextDouble() * 0.02D);
			world.spawnEntity(itemEntity);
			stack.damage(1, playerEntity, (playerEntityVar) -> {
				playerEntityVar.sendToolBreakStatus(hand);
			});
		}

		return ActionResult.SUCCESS;
	}

	return super.onUse(blockState, world, blockPos, playerEntity, hand, blockHitResult);
}
 

@Override
public boolean interactMob(PlayerEntity playerEntity_1, Hand hand_1)
{
    ItemStack stack = playerEntity_1.getStackInHand(hand_1);
    if (CarpetExtraSettings.chickenShearing && stack.getItem() == Items.SHEARS && !this.isBaby())
    {
        if (!this.world.isClient)
        {
            this.damage(DamageSource.GENERIC, 1);
            this.dropItem(Items.FEATHER, 1);
            stack.damage(1, (LivingEntity)playerEntity_1, ((playerEntity_1x) -> {
                playerEntity_1x.sendToolBreakStatus(hand_1);
            }));
        }
    }
    return super.interactMob(playerEntity_1, hand_1);
}
 

@Override
public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
    if (player.getStackInHand(hand).getItem() instanceof FlintAndSteelItem) {
        world.setBlockState(pos, Blocks.WALL_TORCH.getDefaultState().with(WallTorchBlock.FACING, state.get(WallTorchBlock.FACING)));
        ItemStack stack = player.getStackInHand(hand).copy();
        stack.damage(1, player, (playerEntity -> {
        }));
        player.setStackInHand(hand, stack);
    }

    return super.onUse(state, world, pos, player, hand, hit);
}
 

@Override
public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
    if (player.getStackInHand(hand).getItem() instanceof FlintAndSteelItem) {
        world.setBlockState(pos, Blocks.TORCH.getDefaultState());
        ItemStack stack = player.getStackInHand(hand).copy();
        stack.damage(1, player, (playerEntity -> {
        }));
        player.setStackInHand(hand, stack);
    }
    return super.onUse(state, world, pos, player, hand, hit);
}
 

@Inject(method = "eatFood(Lnet/minecraft/world/World;Lnet/minecraft/item/ItemStack;)Lnet/minecraft/item/ItemStack;", at = @At(value = "INVOKE", target = "Lnet/minecraft/item/ItemStack;decrement(I)V"), cancellable = true)
public void eatFood(World world, ItemStack stack, CallbackInfoReturnable<ItemStack> info) {
	if (stack.isDamageable()) {
		stack.damage(1, (LivingEntity) (Object) this, (entity) -> entity.sendToolBreakStatus(getActiveHand()));
		info.setReturnValue(stack);
	}
}
 

@Override
protected ItemStack dispenseSilently(BlockPointer blockPointer_1, ItemStack itemStack_1)
{
    if (!CarpetExtraSettings.dispensersTillSoil)
        return super.dispenseSilently(blockPointer_1, itemStack_1);
    
    World world = blockPointer_1.getWorld();
    Direction direction = blockPointer_1.getBlockState().get(DispenserBlock.FACING);
    BlockPos front = blockPointer_1.getBlockPos().offset(direction);
    BlockPos down = blockPointer_1.getBlockPos().down().offset(direction);
    BlockState frontState = world.getBlockState(front);
    BlockState downState = world.getBlockState(down);
    
    if (isFarmland(frontState) || isFarmland(downState))
        return itemStack_1;
    
    if (canDirectlyTurnToFarmland(frontState))
        world.setBlockState(front, Blocks.FARMLAND.getDefaultState());
    else if (canDirectlyTurnToFarmland(downState))
        world.setBlockState(down, Blocks.FARMLAND.getDefaultState());
    else if (frontState.getBlock() == Blocks.COARSE_DIRT)
        world.setBlockState(front, Blocks.DIRT.getDefaultState());
    else if (downState.getBlock() == Blocks.COARSE_DIRT)
        world.setBlockState(down, Blocks.DIRT.getDefaultState());
    
    if (itemStack_1.damage(1, world.random, null))
        itemStack_1.setCount(0);
    
    return itemStack_1;
}
 

public static void shearEntity(ItemStack stack, IWorld world, BlockPos pos, IShearable target) {
	if (!(target instanceof Entity)) {
		throw new IllegalArgumentException("Tried to call shearEntity on something that was not an entity!");
	}

	Entity entity = (Entity) target;

	List<ItemStack> drops = target.onSheared(stack, world, pos, EnchantmentHelper.getLevel(Enchantments.FORTUNE, stack));
	Random rand = world.getRandom();

	for (ItemStack drop : drops) {
		ItemEntity item = entity.dropStack(drop, 1.0F);

		if (item == null) {
			continue;
		}

		float accelerationX = (rand.nextFloat() - rand.nextFloat()) * 0.1F;
		float accelerationY = rand.nextFloat() * 0.05F;
		float accelerationZ = (rand.nextFloat() - rand.nextFloat()) * 0.1F;

		item.setVelocity(item.getVelocity().add(accelerationX, accelerationY, accelerationZ));
	}

	if (stack.damage(1, world.getRandom(), null)) {
		stack.setCount(0);
	}
}
 

@Override
public boolean interactMob(PlayerEntity player, Hand hand) {
	ItemStack stack = player.getStackInHand(hand);
	if (stack.getItem() == Items.SHEARS && this.getBreedingAge() >= 0) {
		this.world.addParticle(ParticleTypes.EXPLOSION, this.getX(), this.getY() + (double) (this.getHeight() / 2.0F), this.getZ(), 0.0D, 0.0D, 0.0D);
		if (!this.world.isClient) {
			this.remove();
			
			if (this.world.getDimension().getType() == HallowedDimensions.THE_HALLOW) {
				this.world.createExplosion(this, this.getX(), this.getY(), this.getZ(), 3.0F, Explosion.DestructionType.BREAK);
			} else {
				CowEntity cow = EntityType.COW.create(this.world);
				cow.updatePositionAndAngles(this.getX(), this.getY(), this.getZ(), this.yaw, this.pitch);
				cow.setHealth(this.getHealth());
				cow.bodyYaw = this.bodyYaw;
				if (this.hasCustomName()) {
					cow.setCustomName(this.getCustomName());
				}
				this.world.spawnEntity(cow);
			}
			
			for (int i = 0; i < 5; ++i) {
				this.world.spawnEntity(new ItemEntity(this.world, this.getX(), this.getY() + (double) this.getHeight(), this.getZ(), new ItemStack(STEM_FEATURE.getBlock())));
			}
			
			stack.damage(1, player, ((player_1) -> {
				player_1.sendToolBreakStatus(hand);
			}));
			this.playSound(SoundEvents.ENTITY_MOOSHROOM_SHEAR, 1.0F, 1.0F);
		}
		return true;
	} else if (stack.getItem() == Items.BOWL && this.getBreedingAge() >= 0 && !player.abilities.creativeMode) {
		stack.decrement(1);
		ItemStack stew = new ItemStack(HallowedItems.PUMPKIN_STEW);
		
		if (stack.isEmpty()) {
			player.setStackInHand(hand, stew);
		} else if (!player.inventory.insertStack(stew)) {
			player.dropItem(stew, false);
		}
		
		this.playSound(SoundEvents.ENTITY_MOOSHROOM_MILK, 1.0F, 1.0F);
		
		return true;
	} else {
		return super.interactMob(player, hand);
	}
}