My spaceship doesnt move

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1

Godot Version

Godot 4.3

Question

My object doesnt move

extends CharacterBody2D

const SPEED = 200.0
var mouse_position = null
var direction = 10

func _physics_process(delta):
	mouse_position = get_global_mouse_position()
	

	if Input.is_action_just_pressed("left"):
		direction = (direction - 10) 
	if Input.is_action_just_pressed("right"):
		direction = (direction + 10) 
	if Input.is_action_pressed("forward"):
		velocity = (direction * SPEED)
		
	move_and_slide()
	look_at(direction)
2

If I try running your code, I get an error message and the game doesn’t run:

Invalid type in function ‘look_at’ in base ‘CharacterBody2D (character_body_2d.gd)’. Cannot convert argument 1 from int to Vector2.

If I remove the last line, and then try to run it again and press forward, I get a different error:

Error setting property ‘velocity’ with value of type float.

Generally, if your code doesn’t work, and you are getting error messages, it’s a good idea to read those, and if you don’t understand them, at least include them when you post your question here.

With that out of the way: Both of these errors occur because you’re trying to use a float instead of a vector. I’m not entirely sure what you’re trying to do with the direction variable - if it’s rotation, then a simpler way to achieve that would be:

    if Input.is_action_just_pressed("left"):
        rotate(deg_to_rad(-10))
    if Input.is_action_just_pressed("right"):
        rotate(deg_to_rad(10))

Or, for smoother rotation while the buttons are held down:

    if Input.is_action_pressed("left"):
        rotate(deg_to_rad(-50) * delta)
    if Input.is_action_pressed("right"):
        rotate(deg_to_rad(50) * delta)

Then, in order to move in the direction the character is pointing, you take its global_transform.y or global_transform.x and multiply with the speed. Which one you use depends on which way the character sprite is pointing. Here’s moving along the y axis (only while the forward button is held down):

    if Input.is_action_pressed("forward"):
        velocity = global_transform.y * SPEED
    else:
        velocity = Vector2.ZERO

    move_and_slide()
3

You defined direction as a number, but look_at expects a vector.