How to tell if mouse is off-screen?

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#41

MousePosition, MouseDelta only works if MouseLockEnabled

#42

How are you fetching the mouse postion, UIS:GetMousePosition() every frame, or are you using an event of UIS which returns the mouse position when it changes?

#43

Also, you can use the mouseDelta without the mouse being locked, you’d just store the previous mouseposition each frame, and subtract the new position from the old.

#44

Could you create a virtual cursor and make the player lock in first-person view? You could detect their cursor movement by UserInputService:GetMouseDelta() and the actual cursor will never go off-screen, nor the virtual cursor if you script it to not go off-screen.