extends Area2D

var bullet_scene = preload("res://scenes/enemy_bullet.tscn")
var start_pos = Vector2.ZERO
var speed = 0
var direction = Vector2(0,1)
var tween_speed: float = 1.4

var exploding = false

var enemy_move_aggression = randf_range(5, 20)
var enemy_shoot_aggression = randf_range(4, 20)

@onready var screensize  = get_viewport_rect().size
@onready var timer = $MoveTimer


func _ready():
  timer.start()

func start(pos):
    speed = 2
    var pos_mod = randf_range(-32,32) #modify the start position randomly
    position = Vector2(pos.x + pos_mod, -pos.y) #add the modifier  
    #position = Vector2(pos.x, -pos.y)
    start_pos = pos
    await get_tree().create_timer(randf_range(0.25, 0.55)).timeout
    var tween = create_tween().set_trans(Tween.TRANS_BACK)
    tween.tween_property(self, "position:y", start_pos.y, tween_speed)
    await tween.finished
    $MoveTimer.wait_time = enemy_move_aggression
    $MoveTimer.start()
    $ShootTimer.wait_time = enemy_shoot_aggression
    $ShootTimer.start()

func _on_timer_timeout():
  speed = randf_range(75, 100)
  $DirectionTimer.start()
  
func _on_direction_timer_timeout():
  direction = Vector2(randf_range(-1, 1), randf_range(0, 1))
  direction = direction.snapped(Vector2(0,1))
  match direction:
        Vector2(0,1):
          $EnemyCRT.set_frame(0)
        Vector2(1,0):
          $EnemyCRT.set_frame(1)
        Vector2(-1,0):
          $EnemyCRT.set_frame(2) 
  $DirectionTimer.start() 

func _on_shoot_timer_timeout():
    var b = bullet_scene.instantiate()
    get_tree().root.add_child(b)
    b.start(position)
    $ShootTimer.wait_time = randf_range(4, 20)
    $ShootTimer.start()

func _process(delta):
    position += direction * speed * delta
    
  
          
   
  
    #direction = direction.snapped(Vector2(1, 0))  # Snap to horizontal
    #direction = direction.snapped(Vector2(0, 1))  # Snap to vertical
        
    
    
    if position.y > screensize.y + 32:
        start(start_pos)
        
    #if position.x > screensize.x + 32:
        #start(start_pos)
        #
    #if position.x < screensize.x + 32:
        #start(start_pos)
        
    #if Input.is_action_just_pressed("ui_right"):
        #direction = Vector2(1, 0)  # Move right
    #elif Input.is_action_just_pressed("ui_left"):
        #direction = Vector2(-1, 0)  # Move left
    #elif Input.is_action_just_pressed("ui_up"):
        #direction = Vector2(0, -1)  # Move up
    #elif Input.is_action_just_pressed("ui_down"):
        #direction = Vector2(0, 1)  # Move down
        



func explode():
    if exploding: return
    exploding = true
    EventBus.enemy_hit.emit(5)
    speed = 0
    $AnimationPlayer.play("explode")
    #set_deferred("monitoring", false)
    await $AnimationPlayer.animation_finished
    queue_free()
    EventBus.enemy_died.emit()