extends KinematicBody2D

onready var detectionZone = $DetectionZone
onready var sprite = $AnimatedSprite
onready var hitBox = $HitBoxPivot/HitBox/CollisionShape2D
onready var bodies = []

var vector_to_enemy = Vector2.ZERO
var velocity = Vector2.ZERO
var state = IDLE
var attack_range = 50
var is_attacking = false
const MAX_SPEED = 20

enum {IDLE, RUN, ATTACK, DEATH}

func _ready():
    state = IDLE

func _physics_process(_delta):
    match state:
        IDLE:
            bodies = detectionZone.get_overlapping_bodies()
            bodies.erase(self)
            sprite.play("Idle")
            if bodies.size() > 0:
                state = RUN

        RUN:
            var closest_enemy = find_closest_enemy(bodies)
            if closest_enemy == null:
                state = IDLE
            if self.position.x <= closest_enemy.position.x:
                velocity = self.position.direction_to(closest_enemy.position - Vector2(30,0))
                sprite.flip_h = false
            elif self.position.x > closest_enemy.position.x:
                velocity = self.position.direction_to(closest_enemy.position + Vector2(30,0))
                sprite.flip_h = true
            velocity = velocity.normalized()
            velocity = move_and_slide(velocity * MAX_SPEED)
            sprite.play("Run")
            var d_self_y = self.position.y
            var d_enemy_y = closest_enemy.position.y
            if abs(d_enemy_y - d_self_y) < rand_range(5, 15):
                state = ATTACK

        ATTACK:
            if bodies.size() == 0:
                state = IDLE
            sprite.play("Attack1")
            hitBox.disabled = false
            if sprite.flip_h == true:
                get_node("HitBoxPivot").set_scale(Vector2(-1, 1))

        DEATH:
            sprite.play("Death")
            queue_free()

func find_closest_enemy(_bodies):
    var min_dist = 99999
    var closest_enemy
    for body in _bodies:
        if body != null:
            var dist = self.position.distance_to(body.position)
            if (dist < min_dist):
                min_dist = dist
                closest_enemy = body
    return closest_enemy

func _on_AnimatedSprite_animation_finished():
    if sprite.animation == "Death":
        queue_free()
    if sprite.animation == "Attack1":
        hitBox.disabled = true

func _on_HurtBox_area_entered(_area):
    state = DEATH