extends Sprite


# CONSTANTS
const SPEED = 300  # px
const ANGULAR_SPEED = 1.5  # radians

# BUILT-IN METHODS
func _process(delta):
	# Get the direction of the wheels from the gamepad's first axis
	# (-1 is full left, 1 is full right).
	var direction = Input.get_joy_axis(0, JOY_AXIS_0)
	# Invert direction when reversing.
	if brake_down():
		direction *= -1
	# Rotate the car accordingly (but not when dry steering).
	if accelerator_down() or brake_down():
		rotation += ANGULAR_SPEED * direction * delta

	# Move the car forward or backward.
	var velocity = Vector2.ZERO  # (0, 0) a zero vector.

	if accelerator_down():
		velocity = Vector2.UP.rotated(rotation) * SPEED
	if brake_down():
		velocity = Vector2.DOWN.rotated(rotation) * SPEED

	position += velocity * delta

# HELPER METHODS
func accelerator_down():
	# Return true if the car is moving forward.
	return Input.is_joy_button_pressed(0, JOY_R2)

func brake_down():
	# Return true if the car is in reverse gear.
	return Input.is_joy_button_pressed(0, JOY_L2)