There are several posts on my blog regarding the WiiMote IR Camera, and in one of them dealing with the un-mounting etc. ... (http://trandi.wordpress.com/2011/04/03/the-wiimote-and-fez-domino/
) you can find a link to the WIIBREW site (http://wiibrew.org/wiki/Wiimote#IR_Camera
) that has all the technical details.
Basically, the camera does ALL the work for you (it's not only a simple camera it also has a uC included) and outputs on a I2C bus the positions and sizes of the 1st 4 IR points it can find.
So you only need to know what are the requests you need to send on this bus and the format of the received response (both of which you can find in my code examples).
For my tank project I have connected the IR Camera directly to the NXT brick, but I have another post (http://trandi.wordpress.com/2011/05/11/wiimote-ir-camera-with-arduino/
) where I show the Arduino code
I don't really know what "Huan Qi, Forces of Valor" is but I'll have a look when I get back home, it sounds intersting...
Hope all this helps,