Possible missing reference error.

10-17-2009 2:28 AM |

I get 4 of these errors.

 Error 5 'SilverArcade.SilverSprite.Rectangle' does not contain a definition for 'Contains' and no extension method 'Contains' accepting a first argument of type 'SilverArcade.SilverSprite.Rectangle' could be found (are you missing a using directive or an assembly reference?)

if public void UpdateCannonBalls()

 {

foreach (GameObject ball in cannonballs)

 {

if (ball.alive)

{

ball.position += ball.velocity;

 if (!viewportRect.Contains(new Point

((int)ball.position.X, (int)ball.position.Y)))

{

 ball.alive = false; continue;

 }

What reference do I add? Or what do I need to add to make it work?

Theres also 2 errors for resetElapsedTime.

Same error as above only exception is it says SilverArcade.SilverSprite.Rectangle.

(I am a complete novice and have no knowledge of Silverlight whatsoever.)

Thanks.