The project is being coded in C++ and has SDL2 already integrated.
In terms of functionality, the game is going to be played from an "automap" perspective, so limiting the camera's position isn't an issue. The actual models (both object and level) are going to be read from a file, but I don't care too much about the format as long as its relatively easy to create said file.
In terms of payment, the game is going to be open-source freeware, so don't expect to be payed to create a free product.

If you're interested, let me know. I do have a couple more details to mention before you start, but I want to keep this post brief.