extends KinematicBody2D

const SPEED: int = 30

var player: KinematicBody2D = null
var velocity: Vector2 = Vector2.ZERO
var health: int = 15
var hit: bool = false
var counter: int = 0
signal demon_boss_death

func _physics_process(_delta: float) -> void:
	velocity = Vector2.ZERO

	if player and position.distance_to(player.position) > 1:
		velocity = position.direction_to(player.position).normalized() * SPEED
		var angle = position.angle_to_point(player.position)
		if abs(angle) > PI/2:
			$AnimatedSprite1.scale.x = -0.563
		else:
			$AnimatedSprite1.scale.x = 0.563
			
		if hit == true:
			if counter < 15:
				if counter % 5 == 0:
					$AnimatedSprite1.visible = false
				else:
					$AnimatedSprite1.visible = true
				counter += 1
				velocity = Vector2.ZERO
			else:
				hit = false
				counter = 0

	velocity = move_and_slide(velocity)
	return


func _on_player_detector_body_entered(body: Node) -> void:
	if body.is_in_group('player'):
		player = body
		$AnimatedSprite1.animation = 'Walk'
	return


func _on_player_detector_body_exited(body: Node) -> void:
	if body.is_in_group('player'):
		player = null
		$AnimatedSprite1.animation = 'Idle'
	return


func _on_hitbox_area_entered(area: Area2D) -> void:
	if area.is_in_group('player_weapon_1'):
		health -= 1
		hit = true
	elif area.is_in_group('player_weapon_2'):
		health -= 2
		hit = true

	if health <= 0:
		call_deferred('queue_free')
		emit_signal("demon_boss_death")
	return

func _on_Player_Detector__Attack_body_entered(body: Node) -> void:
	if body.is_in_group('player'):
		player = body
		$AnimatedSprite1.animation = 'Attack'


func _on_Player_Detector__Attack_body_exited(body: Node) -> void:
	if body.is_in_group('player'):
		player = body
		$AnimatedSprite1.animation = 'Walk'