extends Node2D
@onready var game: Node2D = $".."
@onready var crates: Node2D = $"../Crates"
@onready var player: CharacterBody2D = $"../Player"

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:
	#wire up view
	player.forcePushSignal.connect(push)
	player.shootSignal.connect(makeBullet)
	#wire up gamecontroller
	game.destroySignal.connect(destroy)
	game.levelChangeSignal.connect(changeScene)
	game.fanUpSignal.connect(push)
	buildLevel()

func buildLevel()->void:
	updateCrates()
	
func updateCrates()->void:
	var _crateTotal:int = 0
	if crates:
		for obj in crates.get_children():
			if obj is Crate:
				if not obj.tree_exited.is_connected(updateCrates):
					obj.tree_exited.connect(updateCrates)
				_crateTotal +=1
	game.crateTotal(_crateTotal)
	
#applies impulse to rigidbodies
func push(body, direction)->void:
	body.apply_central_impulse(direction)

func destroy(body)->void:
	body.queue_free()
	
func changeScene(level)->void:
	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)
			add_sibling(myBullet)
		else:
			myBullet = bulletArray.pop_back()
			
		bulletArray.push_front(myBullet)
		return myBullet

func makeBullet(targetPosition:Transform2D, speed:int)->void:
	var myBullet:Bullet = bulletFactory()
	myBullet.transform = targetPosition
	myBullet.setSpeed(speed)
	myBullet.set_process(true)