Unity Input detected multiple times in a press

Question

I have a source MonoBehavior script with these methods:

private void Update () {
    if (Input.GetMouseButton(0)) {
        HandleInput();
    }         


        

Answer 1

For me, I had placed the Input.GetMouseButtonDown(0) inside FixedUpdate. Because of this, Input.GetMouseButtonDown(0) returns true multiple times in a single mouse click. Replace FixedUpdate with Update, and it will work.