Inhibit force from doubling when 2 axes are active

Questions & Answers
1

I’m using a rolling ball controller from the Circular Force Package found on the asset store. My problem is when I move the ball in a diagonal direction, the force becomes doubled when both axes are active. I can’t figure out how to inhibit the force while both are active. I tried dividing the force by 2 when both are active, but that didn’t give the best result. Any suggestions are greatly appreciated.

Here’s part of the code…

    void FixedUpdate()
    {
        //Right Left controls
        float horMovement = movementForce * Input.GetAxis("Horizontal");
        
        //Forward Backward controls
        float verMovement = movementForce * Input.GetAxis("Vertical");
        
        //Up Down controls. Note: For Zero G 
        float floatMovement = movementForce * Input.GetAxis("Mouse ScrollWheel");
		
	
       	if (horMovement != 0)
		{
            this.transform.rigidbody.AddForce(new Vector3(horMovement, 0, 0), ForceMode.Impulse);	
        } 
		
		else
   
 	    if (verMovement != 0)
        {
            this.transform.rigidbody.AddForce(new Vector3(0, 0, verMovement), ForceMode.Impulse);
        }
	
		
		
		if (floatMovement != 0)
        {
            this.transform.rigidbody.AddForce(new Vector3(0, floatMovement * 4, 0), ForceMode.Impulse);
        }
    }

    //Enables/Disable the circular gravity
    private void EnableCircularGravity(bool enable)
    {
        CircularGravity circularGravity = this.GetComponent<CircularGravity>();

        circularGravity.enable = enable;
	
    }
	
	
	
	
	
	
	
}
2

Just use Vector3.ClampMagnitude like this:

void FixedUpdate()
{
    Vector3 moveDirection = new Vector3(
        Input.GetAxis("Horizontal"),
        0,
        Input.GetAxis("Vertical")
    );
    moveDirection = Vector3.ClampMagnitude(moveDirection,1.0f);
    moveDirection.y = Input.GetAxis("Mouse ScrollWheel")*4;
    rigidbody.AddForce(moveDirection * movementForce, ForceMode.Impulse);
}

I’m not sure why you use ForceMode.Impulse since it’s ment for one-time boosts relative to the objects mass. You shouldn’t do this every frame. I would probably do something like:

void FixedUpdate()
{
    Vector3 moveDirection = new Vector3(
        Input.GetAxis("Horizontal"),
        0,
        Input.GetAxis("Vertical")
    );
    
    moveDirection = Vector3.ClampMagnitude(moveDirection,1.0f);
    Vector3 upMovement = Vector3.up * Input.GetAxis("Mouse ScrollWheel")*4;
    
    rigidbody.AddForce(moveDirection * movementForce, ForceMode.Acceleration);
    
    if (upMovement != 0.0f)
        rigidbody.AddForce(upMovement * movementForce, ForceMode.Impulse);
}