class_name SceneManager extends Node2D

var bullet = preload("res://scenes/bullet.tscn")
var grenade = preload("res://scenes/grenade.tscn")
@onready var coins = $"../Coins"
@onready var enemies = $"../Enemies"

@onready var game = $".."
var bulletArray = []
var totalAllowedBullets = 7

# Called when the node enters the scene tree for the first time.
func _ready():
	buildLevel()
	
func buildLevel()->void:
	# hook up coins
	var totalCoins = 0
	if coins:
		for obj in coins.get_children():
			if obj is Coin:
				totalCoins +=1
				#hook up a listener at the game controller
				obj.coinCollectedSignal.connect(game._on_coin_collected)
		#tell GC how many coins total
		game.totalCoins(totalCoins)		
		
	var totalEnemies = 0
	if enemies:
		for obj in enemies.get_children():
			if obj is Slime:
				totalEnemies +=1
				#hook up a listener at game controller
				obj.slimeDamageSignal.connect(game._on_slime_damage)
				pass
		game.totalEnemies(totalEnemies)

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	pass
func bulletFactory()->Bullet:
	var myBullet:Bullet
	if bulletArray.size() < totalAllowedBullets:
		#make a new bullet
		myBullet = bullet.instantiate()
		game.add_child(myBullet)
	else:
		myBullet = bulletArray.pop_back()
		
	bulletArray.push_front(myBullet)
	return myBullet
	
func makeBullet(_bulletPosition, _bulletSpeed)->void:
	print("make a bullet, put it in the world")
	var myBullet = bulletFactory()
	myBullet.transform = _bulletPosition
	myBullet.setSpeed(_bulletSpeed)

func makeGrenade(_grenadePosition, _grenadeDirection)->void:
	print("SM make a grenade")
	var myGrenade:Grenade = grenade.instantiate()
	game.add_child(myGrenade)
	myGrenade.apply_central_impulse(Vector2(_grenadeDirection, -1)*200)
	myGrenade.transform = _grenadePosition