Godot 3.0: Your First Game tutorial missing sprites while debugging

Question

So, I started to learn the Godot Game Engine and picked the "Your First Game" tutorial, (link: http://docs.godotengine.org/en/latest/getting_started/step_by_step/your_first_game.html) specifically speaking, the "Choosing Animations" part. This is the code they give:

if velocity.x != 0:
$AnimatedSprite.animation = "right"
$AnimatedSprite.flip_v = false
$AnimatedSprite.flip_h = velocity.x < 0

elif velocity.y != 0:
    $AnimatedSprite.animation = "up"
    $AnimatedSprite.flip_v = velocity.y > 0

What I got is that when pressing the "up" or "down" key, the sprite disappeared but moved until pressing "left" or "right", that's when it reappeared. I also noticed it doesn't flip vertically.

I fixed the missing sprite problem, like this:

if velocity.x != 0:
    $AnimatedSprite.animation = "right"
    $AnimatedSprite.flip_v = false
    $AnimatedSprite.flip_h = velocity.x < 0 
elif velocity.x != 0:
    $AnimatedSprite.animation = "up"
    $AnimatedSprite.flip_v = velocity.y > 0

But there is one issue remaining, it doesn't change vertically. Is there another way to fix this?

Did you solve your issue in the meantime? Is it possible that you have to use velocity.y in your second if loop? Additionally, I would use a second if statement instead of an elif because this makes sure that the second statement gets executed as well if x and y doesn't equal 0. — magenulcus

Kelly Thomas Kelly Thomas · Accepted Answer · 2018-07-18T10:12:39

In the Player script the velocity.y value is controlled with the ui_up and ui_down inputs as shown here:

func _process(delta):
    var velocity = Vector2() # The player's movement vector.
    if Input.is_action_pressed("ui_right"):
        velocity.x += 1
    if Input.is_action_pressed("ui_left"):
        velocity.x -= 1
    if Input.is_action_pressed("ui_down"):
        velocity.y += 1
    if Input.is_action_pressed("ui_up"):
        velocity.y -= 1
    if velocity.length() > 0:
        velocity = velocity.normalized() * speed
        $AnimatedSprite.play()
    else:
        $AnimatedSprite.stop()

To have the behaviour you describe in your question either something is different with your implementation of this method or your velocity.y value is being set somewhere else.

Godot 3.0: Your First Game tutorial missing sprites while debugging

1 Answers