if (Input.GetMouseButtonDown(0))
        {
            isCharging = true;
            currentForce = minForce;
        }

        if (isCharging)
        {
            currentForce += chargeSpeed * Time.deltaTime;
            currentForce = Mathf.Clamp(_currentForce, minForce, maxForce);
        }

        if (Input.GetMouseButtonUp(0))
        {
            isCharging = false;
        	if (rb)
        	{
            	rb.velocity = transform.forward * currentForce;
        	}

        	currentForce = 0f;
        }