class_name Tower

extends Area2D

signal tower_broken

@export var sprite: Sprite2D

@export var max_health = 100
@export var max_energy = 20

var health: float
var energy: float

func move_to_center():
	var screen_size = get_viewport_rect().size
	position = Vector2(screen_size.x / 2, screen_size.y / 2)

func take_damage(amount: float):
	health -= amount
	if health <= 0:
		tower_broken.emit()
		get_tree().paused = true

func _ready():
	move_to_center()
	
	health = max_health
	energy = max_energy

func _process(_delta):
	sprite.regeneration_progress = health / max_health

func _on_someone_entered(body):
	if body is Enemy:
		take_damage(body.damage)
		body.queue_free()