private QRect ShotRect()
{
const double gravity = 4;
double time = timerCount / 4.0;
double velocity = shootForce;
double radians = shootAngle * 3.14159265 / 180;
double velx = velocity * Math.Cos(radians);
double vely = velocity * Math.Sin(radians);
double x0 = (barrelRect.Right() + 5) * Math.Cos(radians);
double y0 = (barrelRect.Right() + 5) * Math.Sin(radians);
double x = x0 + velx * time;
double y = y0 + vely * time - 0.5 * gravity * time * time;
QRect result = new QRect(0, 0, 6, 6);
result.MoveCenter(new QPoint((int)Math.Round(x), Height() - 1 - (int)Math.Round(y)));
return(result);
}