Limit the movement of sprite to screen only (CLAMP)

clamp_movement.gd

extends Area2D

export var speed = 400.0
var screen_size = Vector2.ZERO

# Called when the node enters the scene tree for the first time.
func _ready():
	screen_size = get_viewport_rect().size
	print(screen_size)


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	var direction = Vector2.ZERO
	if Input.is_action_pressed("move_right"):
		direction.x += 1
	if Input.is_action_pressed("move_left"):
		direction.x -= 1
	if Input.is_action_pressed("move_down"):
		direction.y += 1
	if Input.is_action_pressed("move_up"):
		direction.y -= 1
		
	if direction.length() > 1:
		direction = direction.normalized()
	
	position += direction * speed * delta
	position.x = clamp(position.x, 0, screen_size.x)
	position.y = clamp(position.x, 0, screen_size.y)