Supporting Wii remote extension controllers in Light Gun Commando

Wednesday, 4th January 2023

Some light gun games, such as Resident Evil: Dead Aim, require the use of more conventional controller inputs along with pointing a gun at the screen and pulling a trigger. Some light guns have a d-pad in an easily accessible location on the back of the controller to allow for reasonably comfortable control of your character with a thumb, but the Wii remote's placement of the d-pad on the top and near the front makes it fairly awkward to use when held like a gun.

Fortunately, there is an extension controller port on the bottom of the Wii remote that allows the connection of additional controllers such as the Nunchuck or Classic Controller that can be held separately from the gun or clipped onto the Wii remote's gun-shaped holder to bring the controls into a more easily-accessible location. To this end I've been working on implementing support for extension controllers to my Wii remote to light gun adaptor project, which can be seen in the videos below:

The video at the top shows the Nunchuck being used to control the player in Resident Evil: Dead Aim. Once I had added support for the Nunchuck I decided to add support for the Classic Controller too, but as I didn't have one of those at the time I started adding support for different types of extension controller with the only one I had to hand – a uDraw GameTablet. I've always been pretty bad at using graphics tablets as I'm not good at mentally mapping where the pen is on the tablet to where the cursor is on the screen, but maybe playing some light gun games (such as Vampire Night being demonstrated here) with one will improve my skills!

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