extends CharacterBody2D

const SPEED = 150
const DAMAGE = 7
const EXP_AMOUNT = 1

@onready var knockback_timer = $KnockbackTimer
@onready var attack_timer = $AttackTimer
@onready var notice = $Notice
@onready var attack = $Attack

@onready var animation_player = $AnimationPlayer

@export var health = 100

var knockback = Vector2.ZERO
var near_player = false
var is_attacking = false
var is_knocked = false
var is_dead = false
var can_move = true

signal death


func change_hp(dmg):
	if not is_dead:
		health += dmg
		if health <= 0:
			health = 0
			for body in attack.get_overlapping_bodies():
				body.change_hp(DAMAGE)
				body.add_exp(EXP_AMOUNT)
			is_dead = true
			death.emit()

func _on_notice_body_entered(body):
	near_player = true
	body.ai_controller.reward += 1

	
func _on_notice_body_exited(body):
	near_player = false

func _on_attack_body_entered(body):
	is_attacking = false
	body.ai_controller.reward += 1

func _on_attack_body_exited(body):
	is_attacking = true

func _physics_process(delta):
	if near_player and not is_dead:
		if not is_knocked:
			for body in notice.get_overlapping_bodies():
				if self.to_local(body.global_position).x > 30:
					velocity.x = SPEED
				elif self.to_local(body.global_position).x < -30:
					velocity.x = -SPEED
				else:
					velocity.x = move_toward(velocity.x, 0, SPEED)
				
				if self.to_local(body.global_position).y > 30:
					velocity.y = SPEED
				elif self.to_local(body.global_position).y < -30:
					velocity.y = -SPEED
				else:
					velocity.y = move_toward(velocity.y, 0, SPEED)

				if not is_attacking:
					for enemy in attack.get_overlapping_bodies():
						enemy.change_hp(-DAMAGE)
						attack_timer.start()
					is_attacking = true
				
			
		else:
			if can_move:
				self.velocity = knockback
				knockback_timer.start()
				can_move = false
	else:
		velocity.x = move_toward(velocity.x, 0, SPEED)
		velocity.y = move_toward(velocity.y, 0, SPEED)
		
	move_and_slide()


func _on_attack_timer_timeout():
	is_attacking = false

func _on_knockback_timer_timeout():
	knockback = Vector2.ZERO
	is_knocked = false
	can_move = true
	
func _on_death():
	animation_player.play("death")