extends RigidBody2D

# How fast the player will move (pixels/sec).
export var speed = 400

# The force constant
# TODO: replace this with a dynamic force from the length of the drag
export var force = 0.2

# Size of the game window.
var screen_size

# A boolean that indicates whether users is dragging their
# touch or not
var dragging

# The drag starting vector
var drag_start = Vector2()

# Signals
signal hit


func _input(event):
  if event.is_action_pressed('click') and not dragging:
    dragging = true
    drag_start = get_global_mouse_position()

  if event.is_action_released('click') and dragging:
    dragging = false
    var drag_end = get_global_mouse_position()
    var direction = drag_end - drag_start

    # if direction.y > 0:
    #   $Ship.flip_v = true
    # else:
    #   $Ship.flip_v = false

    # var angle = ($FrontPosition.position.normalized() - $CenterPosition.position.normalized()).dot(drag_end.normalized())
    # var torque = ($FrontPosition.position - $CenterPosition.position).angle_to(drag_end)
    # print(torque)
    # print(angle)
    # print("-----")
    apply_impulse(position.normalized(), direction * force)
    # apply_torque_impulse(torque * -100)
    # #$Ship.rotate(torque)

func _ready():
  # hide()
  screen_size = get_viewport_rect().size


func _process(delta):
  if linear_velocity.y > 0:
    $Ship.flip_v = true
  else:
    $Ship.flip_v = false


func _on_Player_body_entered(body):
  hide()
  emit_signal('hit')
  $CollisionShape2D.set_deferred('disabled', true)


func start(pos):
  position = pos
  show()
  $CollisionShape2D.disabled = false