Time for action – importing a Unity input script
The Unity API has values that we can read in a script to tell whether the buttons on a controller are being pressed down. If you were to just use the core OUYA package for Unity, you would have to program your own input manager to act based on those values, but for the purposes of getting the game up and running quickly, you can import an existing script into your game from the OUYA community.
There are several viable input systems that we could find on the Internet, but in this tutorial, we'll use the OuyaInput controller framework by Matthias Titze. Navigate to the GitHub page for the open source project at https://github.com/rendermat/OuyaInputFramework and click on the Download ZIP button to download the files you'll need. When the zipped folder downloads, unzip it and open it to view the contents.
Now that you've acquired all of the necessary files for integrating input into your game, you can put the files into your Unity project by performing...