class_name EnemyHurtbox extends Area2D

# HP Management
@export var max_hp : int
@onready var hp = max_hp :
	set(new_hp):
		if new_hp > max_hp:
			new_hp = max_hp
		if new_hp < 0 :
			new_hp = 0
		hp = new_hp
		if hp == 0:
			die()
@export var flash_duration = 0.2
@export var canvasItem : CanvasItem
@export var flashColor : Color = Color(1.5, 1.5, 1.5)

# Instance-Specific Damage Cooldown
@export var id_block_time = 0.12
var blocked_damage_ids : Array[int] = []

signal damage_taken(damage, dir, id)
signal died

# Reset Hit Flash
func _on_flash_ended():
	if canvasItem != null:
		canvasItem.modulate = Color(1,1,1)

func hurt(damage : int, dir : Vector2 = Vector2.ZERO, id : int = -1) -> bool:
	if not id in blocked_damage_ids:
		block_id(id)
		if canvasItem != null: canvasItem.modulate = flashColor
		$FlashTimer.start(flash_duration)
		hp -= damage
		damage_taken.emit(damage, dir, id)
		return true
	return false

# When taking damage, prevent damage from that instance for id_block_time.
func block_id(id : int):
	blocked_damage_ids.append(id)
	await get_tree().create_timer(id_block_time).timeout
	var id_pos = blocked_damage_ids.find(id)
	if not id_pos == -1: blocked_damage_ids.remove_at(id_pos)

func die():
	died.emit()

func destroy():
	hurt(10 * max_hp)