Port of Raylib to D

This is a WIP port of raylib to the D programming language.

This includes the v4.0.0 source of raylib from C, which is being migrated piecemeal to D.

Platform support

Initially, only desktop will be supported, and likely only tested on Linux and MacOS (Windows users welcome to help!)

All #ifdef for platforms will be changed to either version(none) or version(all), with a comment for the original ifdef. Eventually, the plan is to support all the platforms.

External libraries

There are several external libraries that are "included" with the C version of raylib. Most external API will be included via importC, and compiled with the native C compiler of the OS (which is required for importC anyway). There are some exceptions which were small and easy to port.

It is important to note that we aren't building any C files with importC, we are just using it to import C files. To that end, all importC files are in an importc directory, and not included in the source directory.

Building

To build, first use the makefile in the raylibc directory, which contains the original C code, with all pieces that are ported to D commented out (or are built but ignored).

Then build using dub. This produces libdraylib.a. This is a drop-in replacement for libraylib.a.

draylib is currently built with betterC. Once all files are ported, we will remove this restriction.

Port status

raylib.h, config.h, rlgl.h, rgestures.h have all been converted automatically using dstep to the source/raylib package (note that raylib.h is converted to raylib/package.d).
raylib/rcore.d contains the ported rcore.c file. rcore.c still exists to include some of the external C libraries that have not yet been ported.
raylib/raymath.d is completely ported and is not reliant on the C library to work.
raylib/rtextures.d is ported completely, and relies on importC headers for stb_image to work (see stb_image_import.c in the importc directory)
raylib/rutils.d is ported completely
raylib/rtext.d is ported completely, and relies on importC headers for stb_truetype to work (see stb_truetype_import.c in the importc directory)

In the external directory, the following modules are included:

msf_gif.d - ported with ctod
sdefl.d - ported with ctod
sinfl.d - ported with ctod

Ctod

A tool by Dennis Korpel, ctod, is used to port from C to D. Only C files that we plan to port are sent through here. Ones that are not necessary to port will be used via importC.

Game plan

Port raylib main files to D, so no C files exist for the core library. The examples won't be ported, but there is an existing port of them by Danilo here. However, the C examples are used for testing while the port is in progress.
Provide importC shims for the external files (such as GLFW or stb_image). These will be added as needed when the modules depending on them are ported to D.
Turn off betterC
Migrate C API to be more D-like, leaving original raylib API as a wrapper.

schveiguy / draylib