XNA

An Introduction

You will need 2 projects for your solution for your game

• A class library• And a Game project

File > New Project > Windows Game Library

Why are there 2 types of libraries?

Because

• A windows game library uses the full .NET Framework

• A Xbox 360 game library uses the compact framework

• http://msdn.microsoft.com/en-us/library/2weec7k5.aspx

What that means to us…

• The compact framework has about 30% of the functionality of the .NET framework

• You can do less with Xbox games than you can with Windows games

• So as you decide which platform to use you have to take this into consideration.

Also…

• An Xbox game can be released through community games (have to be a premier member with a gold Xbox live membership)

• An Xbox game released through community games cannot be pirated

• A Windows game can be released through STEAM or you can sell it on your own website as a download, etc– http://store.steampowered.com/

• A Windows game can be pirated

So you have 2 decisions to make

• Before you start coding and developing– What technology do I use?– How do I want to release my game?

• These questions are related.

File > Add > Existing Project

This what your project game solution looks like.

Lets add a new image

Browse and pick the png

Add the declaration

Initialize it

Add a position for the dot

Add the draw

Run it to test

Now add a class to the library – call it Collision

Add this method and build

Add the reference to the library in the game

Import the namespace

Add 2 bounding boxes for the 2 sprites in the Update method

Add the call to the class library and change the texture of the dot

Run it to test

Does the dot turn into a butterfly?

Now let’s add soundRight click on content > Add Existing Item

Add the declarations

Initialize it

Add it to the collision

Now test

More links about sound

• http://msdn.microsoft.com/en-us/library/bb195053.aspx

• http://msdn.microsoft.com/en-us/library/dd231915.aspx

That’s all sweet but I wanna blow things up.

• Ok – follow me.

Add a sprite sheet for the animation

Add a new sound

Change the sound name to the explosion asset name

Add the declarations for the animated sprite

Change the collision

Add an if statement for the timer in update

Change the draw method

Run it and see what happens