Easy way of Porting platform

[humbertodias]

Idea

Instead of adapt the source code to fit into any target platform. We could use the libretro core as a shortcut. Retroarch is already ported to several platform such as: android, iOS, PS3, Xbox, Win, Linux, etc Supported platforms https://www.retroarch.com/?page=platforms So, creating a core like libretro-paintown we would have immediately a port of Paintown to all of them. Luckely that was already made with some libretro cores and could be an inspiration:

1. Jump 'n Bump

   • https://github.com/libretro/jumpnbump-libretro
   • https://www.youtube.com/watch?v=YHrocZPWiH0

2. Gong

   • https://github.com/libretro/gong
   • https://www.youtube.com/watch?v=D5ZNwQQA0H8

3. Boom3

   • https://github.com/libretro/boom3
   • https://www.youtube.com/watch?v=uS7veurg0ww

[juvinious]

It's an interesting idea. I think the code base must be cleaned up a bit more and remove some of the old legacy code of previous backends/ports so that something like this can be facilitated. At the moment I think the focus now is getting the SDL2 backend working as it was with Allegro.

[humbertodias]

I agree. For helping the clean up:

• https://github.com/kazzmir/paintown/pull/70
• https://github.com/kazzmir/paintown/pull/71
• https://github.com/kazzmir/paintown/pull/72
• https://github.com/kazzmir/paintown/pull/73

[juvinious]

This is great. As I mentioned in your easy release ubuntu PR, it would eventually be nice to create an AppImage as it'll allow it to be run on any distro. I'm going to look into it further and just create a separate build script for it. In the meantime this would help get us to create a new release sooner. Thanks!

[juvinious]

Ok, following up on this I don't think this is going to be possible as libretro is dependent on c99 and we have moved on to c11.

The libretro API consists of several functions outlined in libretro.h, found in the RetroArch source package. The API header is compatible with C99 and C++. From C99, the bool type and <stdint.h> are used. The latest version of this file can be found [in libretro-common](https://github.com/libretro/RetroArch/blob/master/libretro-common/include/libretro.h).

We can open this back up and revisit if libretro moves on to c11 in the future.