addOrDropItem

Player.addOrDropItem = function(id, amount, data) {
	let count_before = Player.getAmountOfItemInInv(id);
	Player.addItemInventory(id, amount, data);
	let count_after = Player.getAmountOfItemInInv(id);
	if(!(count_after > count_before)) {
		Level.dropItem(getPlayerX(), getPlayerY(), getPlayerZ(), 0, id, amount, data);
	}
}