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Note All command-line tools should be accessed from the Visual Studio .NET command prompt, which is

code involved in both systems is the same, and there doesn t appear to by any performance difference.

protected var sound:Sound; protected var channel:SoundChannel;

We ll use a timer to keep track of the sound position and fileBytesTotal to keep track of the bytes loaded.

Figure 5-17. The locations of the orbs are shown by green dots on the map. To position the green orbs in the cave, I went back to the original photograph of Precambrian shale that I was editing in Photoshop. I found the x and y coordinates of each of the four positions on the photograph where I wanted an orb to be and made a note of them. That s a total of eight numbers to keep track of, which is not much (four orbs, each with an x and y value). But it s very common for games to store and track hundreds of numbers for groups of objects like this. So rather than taking the lazy route of creating each orb and individually assigning positions to them, I m going to show you how treat them as a single group. They all share the same properties and behave the same way, so it makes sense to work with them together as a single unit. Let s see how we can do this efficiently.

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located in Start Programs Microsoft Visual Studio .NET Visual Studio.NET Tools. This version of the command prompt will set the environment variables that are needed for the use of these tools.

protected var soundPosition:Timer = null; protected var fileBytesTotal:Number;

The first step is to make a little database of the orb positions. When you think of storing data, arrays immediately come to mind. We could store all the positions of the orbs in an array like this: private var _orbPositions:Array = [969,378, 1298,1045, 2109,1696, 2301,700];

For example, to create a key pair that will be stored in the file mykey.key, you can run sn.exe, as shown in Figure 8-1.

protected var isDownloadCompleted:Boolean = false;

Each pair of numbers represents the x and y positions of one of the orbs This will work, but I m sure you can immediately see a few problems here One is that it s difficult to read Even with a bit of creative spacing, it s difficult to see where one pair of numbers ends and the other begins This might not be problem with 8 numbers, but can you imagine what it would look like with 200 It could be very difficult to isolate and debug a problem if you made a mistake entering any of the data Another problem is that looping becomes complicated The great value to storing data in arrays is that you can loop though the data and perform repetitive tasks on hundred of objects with just a few lines of code Our problem in this case is that the data is not uniform.

Caution You absolutely have to keep this key secret. If someone else acquires your key, he or she can

protected var pausePosition:Number;

The first number of each pair is an x position value, and the second is a y position value That means to get or set these values on one object, the loop would need to count in twos, like this: 0, 2, 4, 6, and so on That s fine We could create a loop that counts in twos like this: for(var i:int = 0; i < arraylength; i += 2) { _orbs[i]x = _orbPositions[i]; _orbs[i]y = _orbPositions[i + 1]; } But do you see the problem The _orbs array that stores the objects will also skip though its values in twos It means that only half of them will have their positions set We could use some math get around this, but there s a simpler way It makes more logical sense to group each x and y value as its own single unit.

protected var isPause:Boolean = false;

sign assemblies in your name. When using a publisher-based security scheme, this might compromise your enterprise security measures.

protected var isPlaying:Boolean = false;

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