Invalid get index 'rotation' (on base:'null instance') im coding a camera movement

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Godot Version

Question

so im trying to code a camera where it moves with your mouse under this code: if(event is InputEventMouseMotion) under that is rotation.y -= event.relative.x / 1000 * sensitivity which is 3, under that would be $camera3d.rotation.x -= event.relative.y / 1000 * sensitivity under that would be rotation.x = clamp(rotation.x, PI/-2, PI/2) if you find a solution please tell me or any other substitution for this that would help as well as any other tips.
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Hey uoppou,

You probably want to check if $camera3d is in your SceneTree. It might be spelled differently or using the wrong node path.

Lmk what you find.

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it worked i guess there was a typo in my stuff but it worked when i re named it. thank you. could you help me with another thing, the mouse still drags out of the screen i was hoping you had a way to kinda capture the mouse in the game so the look feature actually works?

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You will want to place this line of code in the ready() or init() of one of your top-level Nodes. I generally, put it with my player script.

Input.mouse_mode = Input.MOUSE_MODE_CAPTURED

See Input — Godot Engine (stable) documentation in English for more information on how capturing the mouse works.

Also, KidsCanCode wrote an article about it for Godot 3 that mostly still applies to Godot 4.
https://kidscancode.org/godot_recipes/3.x/input/mouse_capture/index.html

1 Like
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yeah this works. thank you

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