Pong Game Help

-XM- · #1 (**permalink**) June 18th, 2007, 01:16 PM

Alright I'm having a bit of a problem on the pong game... I think this might be a silly error on my part, but I thought I'd check here to see if anyone else has had this problem:

I have coded the pong game all the way up to the top of page 38,I am supposed to see the space background drawn on my screen but I get an error that says:

Quote:

quote:Error - The type or namespace name 'PongGame' could not be found (are you missing a using directive or an assembly reference?

Code:

delegate void TestDelegate();
          class TestPongGame : [u]PongGame</u>  
        {
            TestDelegate testLoop;
            public TestPongGame(TestDelegate setTestLoop)
            {
                testLoop = setTestLoop;
            } //TestPongGame(setTestLoop)

            protected override void Draw(GameTime gameTime)
            {
                base.Draw(gameTime);
                testLoop();
            } //Draw (gametime)

        } //Class Ponggame.

I have checked and I'm pretty sure the code is the same as the code I have downloaded. I still think this is something simple. If you would like me to post all the code I have entered I can do so. Thanks!

llonden · #2 (**permalink**) June 18th, 2007, 06:13 PM

It might be the namimg convention of one of your .cs files. I think by default, you should have a file called Game1.cs(which includes your Update, Draw, Initialize methods, etc...). If so, rename it to PongGame.cs and see if that works. Or, you can just replace PongGame with Game1 on that line with the error.

-XM- · #3 (**permalink**) June 20th, 2007, 07:14 AM

Thanks so much for replying. I changed it to PongGame.cs. But now I'm having another problem, my whole Draw method is now messed up...

Quote:

quote:Error 1 An object reference is required for the nonstatic field, method, or property

Error 2 An object reference is required for the nonstatic field, method, or property

Error 3 An object reference is required for the nonstatic field, method, or property '

Code:

        protected override void Draw(GameTime gameTime)
        {

            [u]SpriteBatch.Begin();</u>
            [u]SpriteBatch.Draw</u>(backgroundTexture,
                new Rectangle(0, 0, width, height),
                Color.LightGray);
            [u]SpriteBatch.End(); </u>

        }

Once again,I have triple checked my code and I can't find anything....Sorry for these nooby questions here,I'm rather new to all this...

)

llonden · #4 (**permalink**) June 20th, 2007, 11:17 AM

It looks like you haven't created an object of type SpriteBatch yet. You are trying to call class SpriteBatch's methods using the class itself, but you cant. You have to create an object of type SpriteBatch to access the Begin(), Draw(), and End() methods. A class like a blueprint of what an object is supposed to do/contain.

To create an object from the SpriteBatch class:

SpriteBatch anyVariableName = new SpriteBatch(graphics.GraphicsDevice);

anyVariableName(the newly created object) is now an object of type SpriteBatch. Now the object can access SpriteBatch's(the class) methods.

anyVariableName.Begin()
anyVariablevariableName.Draw(), etc...

You might want to look at a simple XNA program to understand its structure, and its 4 major methods(Initialize, LoadGraphicsContent, Update, and Draw).

-XM- · #5 (**permalink**) June 20th, 2007, 02:23 PM

EDIT: Problem solved.... I forgot to change the PongBackground's settings. I had it set as a sprite when it should of been a texture...

It all works and I'm ready to move on!

Thanks for the help llonden. Much appreciated. :)

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