extends KinematicBody2D

export var fireball: PackedScene

var player: KinematicBody2D = null
var move: Vector2 = Vector2.ZERO
const SPEED: int = 50
var counter: int = 0
var velocity: Vector2 = Vector2.ZERO
var health: int = 4


func _ready() -> void:
    visible = false
    return


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

    velocity = move_and_slide(velocity)
    return


func _on_Area2D_body_entered(body: Node) -> void:
    if body.is_in_group('player'):
        player = body
        if counter == 0:
            self.visible = true
            $AnimatedSprite.play('appear')
            counter = 1
    return


func _on_AnimatedSprite_animation_finished() -> void:
    $AnimatedSprite.play('idle')
    return


func _on_Hitbox_area_entered(area: Area2D) -> void:
    if area.is_in_group('player_weapon_1'):
        health -= 1
    elif area.is_in_group('player_weapon_2'):
        health -= 2
    if health <= 0:
        $AnimatedSprite.play('vanish')
        yield($AnimatedSprite, 'animation_finished')
        call_deferred('queue_free')
    return


func _on_Projectile_Timer_timeout() -> void:
    if player:
        var projectile: Node = fireball.instance()
        projectile.init($AnimatedSprite.global_position, player.position)
        get_tree().get_current_scene().get_node('Projectiles').add_child(projectile)
        $AnimatedSprite.play('shriek')
    return