Mouse Sensitivity

Development Programming & Scripting C++
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1 
void AJamPlayerController::Look(const FInputActionValue& Value)
{
	// input is a Vector2D
	FVector2D LookAxisVector = Value.Get<FVector2D>();

	float ScaledBaseTurnRate = BaseTurnRate * GetWorld()->GetDeltaSeconds();

	PlayerPawn->AddControllerYawInput(LookAxisVector.X * ScaledBaseTurnRate);
	PlayerPawn->AddControllerPitchInput(LookAxisVector.Y * ScaledBaseTurnRate * (InvertY ? -1.0f : 1.0f));
}

I’ve been using this to adjust camera sensitivity at runtime for quite some time. However at high sensitivities, it gets really chunky and choppy. This is not ideal. I’ve added a spring arm component to try to add some rotational lag but that didn’t work, and it seems like a crappy workaround anyway. How else can I adjust mouse sensitivity at runtime? ChatGPT is a hallucinating mess when it comes to this, and all the other tutorials/topics seem to do it this way. But there has to be a better way! Any thoughts?

2

Player input is not something that should be scaled by delta time. If the player moved the mouse +50 units on the X axis this frame, then that’s how much he moved it. It is already independent of frame rate. Instead it depends on the player moving/pressing the inputs.

So to control how sensitive the mouse movement is for a player, you multiply the input value by another value.
InputValue * Sensitivity = ScaledInputValue

InputValue * 0.5f = half as sensitive
InputValue * 2.f = twice as sensitive