A quick and dirty way of locating the assets directory in a raylib project.

assethelper.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "raylib.h"

// Locate the assets directory.
char* GetAssetsDirectory() {
    static char assetDir[1024] = {0};

    // 1. Check environment variable
    const char* assetsEnv = getenv("ASSETS");
    if (assetsEnv != NULL) {
        strcpy(assetDir, assetsEnv);

        // Ensure trailing slash.
        if (assetDir[strlen(assetDir) - 1] != '/') {
            strcat(assetDir, "/");
        }
        return assetDir;
    }

    // 2. Check working directory
    char wd[1024] = { 0 };
    strcpy(wd, GetWorkingDirectory());
    char* d = strcat(wd, "/assets/");
    if (DirectoryExists(d)) {
        strcpy(assetDir, d);
        return assetDir;
    }

    // 3. Seek out git root
    char searchDir[1024] = { 0 };
    strcpy(searchDir, GetWorkingDirectory());
    for (int i = 0; i < 10; i++) {
        char gitDir[1024] = { 0 };
        strcpy(gitDir, searchDir);
        strcat(gitDir, "/.git");
        if (DirectoryExists(gitDir)) {
            strcpy(assetDir, searchDir);
            return strcat(assetDir, "/assets/");
        }
        strcpy(searchDir, GetPrevDirectoryPath(searchDir));
    }

    // Failed to locate, write the error and kill the program.
    TraceLog(LOG_ERROR, "Failed to locate asset directory!");
    exit(1);
}

// Use this path to load the asset immediately, once called again original value is replaced!
char *GetAssetPath(const char* filename) {
    static char path[1024] = { 0 };
    strcpy(path, GetAssetsDirectory());
    strcat(path, filename);
    return path;
}