Long-term: Custom front-end interface.

[mauvecow]

Supporting DxLib and Luna is nice for porting Japanese games, but if the core is upgraded sufficiently enough, it's a usable enough library in its own right.

This would require some planning on what would actually be wanted, but definitely workable.

[mauvecow]

I have added src/DPL/ for this, with optional C++ bindings under namespace DPL. For now, it will hold extensions that, originally, should have been global to the whole project in the first place.

In the future, I would like to add:

• DPLApp - General functions for maintaining an application. I would like it to require function calls for the main loop instance, so that the original program 'quits,' in order to make it friendlier to Emscripten or other such targets that cannot control their main loop as nicely.
• DPLDrawQueue - Shuffle DxDraw into a general drawing queue structure.
• DPLAudio - General audio front-end functions, to replace the mess in DxLib/PL.
• DPLSystem - Querying system settings, either DPL's or the OS's, directly
• Expose other useful PL functions.

But it's kind of a 'when i get around to it.' Mostly a lot of this will be shuffling stuff from DxLib/Luna front-ends/back-ends into a saner, universal interface.