extends StaticBody3D
class_name Tower

var bullet : PackedScene = preload("res://Bullets/arrow.tscn")
@export var bullet_damage : int = 1
var current_targets : Array = []
var current : CharacterBody3D
var can_shoot : bool = true


func _process(delta: float) -> void:
	if is_instance_valid(current):
		if can_shoot:
			shoot()
			can_shoot = false
			$Cooldown.start()
	else:
		for i in $BulletContainer.get_child_count():
			$BulletContainer.get_child(i).queue_free()


func shoot() -> void:
	var temp_bullet : Bullet = bullet.instantiate()
	temp_bullet.target = current
	temp_bullet.bullet_damage = bullet_damage
	$BulletContainer.add_child(temp_bullet)
	temp_bullet.global_position = $Aim.global_position


func choose_target(_current_targets : Array) -> void:
	var temp_array : Array = _current_targets
	var current_target : CharacterBody3D = null
	for i in temp_array:
		if current_target == null :
			current_target = i
		else:
			if i.get_parent().get_progress() > current_target.get_parent().get_progress():
				current_target = i
		
		current = current_target

func _on_range_body_entered(body: Node3D) -> void:
	if body is Enemy:
		current_targets.append(body)
		choose_target(current_targets)


func _on_range_body_exited(body: Node3D) -> void:
	if body is Enemy:
		current_targets.erase(body)
		choose_target(current_targets)


func _on_cooldown_timeout() -> void:
	can_shoot = true