class_name SceneManager extends Node2D
@onready var triggers: Node2D = $"../Triggers"
@onready var creates: Node2D = $"../Creates"
@onready var level: Node2D = $"../Level"
@onready var game: GameController = $".."

var bullet = preload("res://scenes/bullet.tscn")
var bulletArray:Array[Bullet] = []
var totalAllowedBullets:int = 7

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	#pass # Replace with function body.
	buildLevel()


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


func buildLevel() ->void:
	print("building level")
	updateCreates()
	updateTriggers()
	
	#wire up signals from GameCtroller
	game.destroySignal.connect(destroy)
	game.teleportSignal.connect(teleport)
	game.levelChangeSignal.connect(loadLevel)


func updateTriggers()->void:
	if triggers:
		for obj in triggers.get_children():
			if obj is Trigger:
				if not obj.AreaTrigger.is_connected(game._on_trigger):
					obj.AreaTrigger.connect(game._on_trigger)



func updateCreates() ->void:
	#check that there is a create note
	if creates:
		var totalCreates = 0
		for obj in creates.get_children():
			if obj is Create: 
				if not obj.tree_exited.is_connected(updateCreates):
					obj.tree_exited.connect(updateCreates)
				totalCreates +=1
		#print("Total Creates:"+ str(totalCreates))
		game.createUpdate(totalCreates)
	


func destroy(body)->void:
	body.queue_free()
	
	
func teleport(body) ->void:
	if body is Create:
		var viewport_size = get_viewport().get_visible_rect().size	 
		var random_x = randf_range(0,viewport_size.x)
		var random_y = randf_range(0,viewport_size.y)
		var newPosition = Vector2(random_x,random_y)
		body.teleport_to(newPosition)
 


func loadLevel(level:String)->void:
	print(level)
	get_tree().call_deferred("change_scene_to_file", level)
	
	
func bulletFactory()->Bullet :
		var myBullet:Bullet
		#how many bullets have been made?
		if bulletArray.size() <= totalAllowedBullets:
			myBullet = bullet.instantiate()
			if not myBullet.bulletDamageSignal.is_connected(game.bulletDamage):
				myBullet.bulletDamageSignal.connect(game.bulletDamage)
			game.add_child(myBullet)
		else:
			myBullet = bulletArray.pop_back()
			
		bulletArray.push_front(myBullet)
		return myBullet
func makeBullet(targetPosition, speed)->void:
	print("Make a bullet!")
	print("bullets created: "+str( bulletArray.size() ))
	var myBullet:Bullet = bulletFactory()
	myBullet.transform = targetPosition
	myBullet.setSpeed(speed)
	myBullet.set_process(true)