class_name SceneManager extends Node2D
var bulletArray =[]
var totalAllowedBullets = 7
var bullet = preload("res://scenes/bullet.tscn")
@onready var triggers: Node2D = $"../triggers"
@onready var coins: Node2D = $"../coins"
@onready var enemies: Node2D = $"../enemies"



# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	Gamecontroller.reset()
	
	if triggers:
		for obj in triggers.get_children():
			if obj is Trigger:
				obj.areaTriggerSignal.connect(Gamecontroller._on_trigger)
	if coins:
		updateCoins()
		
	if enemies:
		updateEnemies()
				
	Gamecontroller.destroySignal.connect(destroy)
	Gamecontroller.levelChangeSignal.connect(changeScene)

func updateEnemies():
	for obj in enemies.get_children():
		if obj is Slime:
			if not obj.playerDamageSignal.is_connected(Gamecontroller.playerAttacked):
				obj.playerDamageSignal.connect(Gamecontroller.playerAttacked)

		
func updateCoins():
	var coinCount = 0
	for obj in coins.get_children():
			if obj is Coin:
				if not obj.coinCollectedSignal.is_connected(Gamecontroller.coinCollected):
					obj.coinCollectedSignal.connect(Gamecontroller.coinCollected)
				#connect tree exit
				if not obj.tree_exited.is_connected(updateCoins):
					obj.tree_exited.connect(updateCoins)
				coinCount +=1
	Gamecontroller.totalCoinCount(coinCount)

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta: float) -> void:
	pass

# makes and recycles bullets
func bulletFactory():
	var myBullet:Bullet
	if bulletArray.size() < totalAllowedBullets:
		#make a new bullet
		myBullet = bullet.instantiate()
		myBullet.bulletDamageSignal.connect(Gamecontroller.bulletDamage)
		owner.add_child(myBullet)
	else:
		myBullet = bulletArray.pop_back()
		
	bulletArray.push_front(myBullet)
	return myBullet
	
func makeBullet(position, speed):
	var someBullet = bulletFactory()
	someBullet.setSpeed(speed)
	# postition the bullet
	someBullet.transform = position
	
func destroy(body):
	body.queue_free()
func changeScene(level):
	get_tree().call_deferred("change_scene_to_file", level)