extends Node2D
# hold control and drag + drop
@onready var game:GameController = $".."
@onready var crates: Node2D = $"../Crates"
@onready var player: Player = $"../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:
	player.pushSignal.connect(pushTarget)
	player.shootSignal.connect(makeBullet)
	
	#signals from the GameController
	game.destroySignal.connect(destroy)
	buildLevel()

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

func buildLevel() -> void:
	#tell GC how many crates...
	updateCrates()
func updateCrates()->void:
	var totalCrates = 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)
				totalCrates +=1
	
	game.crateTotal(totalCrates)
func pushTarget(body,pushDirection)->void:
	if body is RigidBody2D:
		body.apply_central_impulse(pushDirection)
func destroy(body)->void:
	body.queue_free()
func bulletFactory()->Bullet:
	var myBullet:Bullet
	#how many bullets have been produced?
	if bulletArray.size() <= totalAllowedBullets:
		#make a new bullet
		myBullet = bullet.instantiate()
		add_sibling(myBullet)
		if not myBullet.bulletHitSignal.is_connected(game.bulletDamage):
			myBullet.bulletHitSignal.connect(game.bulletDamage)
	else:
		myBullet = bulletArray.pop_back()
		
	bulletArray.push_front(myBullet)
	return myBullet
func makeBullet(spawnPosition, speed)->void:
	print("make bullet")
	var myBullet:Bullet = bulletFactory()
	myBullet.transform = spawnPosition
	myBullet.setSpeed(speed)