Doom for tvOS Running!
Doom running on Apple TV with game controller support
This is an older project from back in 2015. While a couple of people had gotten Doom running on tvOS, they either had not released source code, or did not have it running on more recent SDK's and buildable in Xcode 8. I hadn't seen anyone implement game controller support either.
Implementation Details
I managed to get it running with game controller support under Xcode 8. I used a fork of John Carmack's original code as a starting point. The code has not been updated in a while and did not support 64 bit architecture let alone the latest iOS / tvOS framework versions. I created the targets for tvOS and made several changes to allow it to run.
Video demonstration of Doom running on Apple TV
Asset Management
The fork I used as a starting point expects the user to grab image assets and the WAD files from the paid version of iOS Doom. I didn't see a reason to use the image assets iD used from the paid version, so I used assets that were not included by iD in the menus and so forth. That way, as long as someone has the WAD file from the paid version (I've bought it MANY, MANY times over the years) and a Mac they can sideload the project from Github in Xcode, add the WAD file and get it up and running pretty easily. It also allowed me to use assets that are higher resolution for the menus. Currently, this is all gitignored so as not to violate licensing.
Current Status and Known Issues
The code uses AudioToolbox which was deprecated a while ago and that piece needs to be rewritten to use AVAudioPlayer. There are also some button overlays used for iOS that not needed on tvOS.
Source Code
You can find the source code on Github. This is an old project (over 8 years old) and several people have taken the code further.