After a few years I decided to drop the approach of 'Real-3D' and to return to a mode with animated steps from tile to tile. In the end it's a 2D-Maze-Game displayed with a simple 3D-View, rendered with OpenGL.
I'm working parallel on the game core as well on the 3D-Rendering engine. This makes the progress a little bit slow, but should result in code which is much easier to maintain then the old approach. It allows to test the game code in '2D-Mode' and then to attach the 3D-Presentation as needed.
The old code will be replaced by a complete rewrite, using the SDLGL-Library (which is based on SDL).
Today I develop under Linux Mint, using Code-Blocks as IDE, which is also available under Windows. AS I'm done with the completion of the project in Linux, I'll add a binary for Windows as soon as possible.