Simple single-header game library in ANSI C with zero dependencies. Pathfinding does require linking with math (-lm with gcc). Most useful for roguelike devs, but has functionality that should be useful to most 2d tile-based games. Everything but the pathfinding works with C89 - pathfinding currently requires C99.

examples/minimal.c

#include <stdio.h>
#define RL_IMPLEMENTATION
#include "roguelike.h"
int main()
{
    srand(time(0)); /* seed the RNG */
    RL_Map *map = rl_map_create(80, 25); /* generate tiles memory */
    if (rl_mapgen_bsp(map, RL_MAPGEN_BSP_DEFAULTS) != RL_OK) { /* generate random map */
        printf("Error occurred during mapgen!\n");
        return 1;
    }
    /* print map */
    for (unsigned int y=0; y<map->height; ++y) {
        for (unsigned int x=0; x<map->width; ++x) {
            printf("%c", map->tiles[x + y*map->width]);
        }
        printf("\n");
    }
    rl_map_destroy(map);
    return 0;
}

See the examples folder - maze.c, bsp.c, and automata.c all contain basic dungeon generation. dungeon.c and town_sewers.c are more detailed examples including FOV and basic player movement.

Note that the interface is considered unstable. This is in its very early stages, but should be usable as-is. I'm currently using this to develop roguelike-style games. There's a commodore 64 POC (using LLVM-MOS & cc65) and a desktop POC. Once I push a tagged release the code API should be more stable.