Add CLI arguments

frontend_sdl.c

@@ -115,10 +115,34 @@ void LCR_log(const char *str)
   printf("LOG: %s\n",str);
 }
 
+void printHelp(void)
+{
+  printf(
+    "Licar, 3D racing game, version " LCR_VERSION ", arguments:\n"
+    "  -h   print help and quit\n"
+    LCR_ARG_HELP_STR);
+}
+
 int main(int argc, char *argv[])
 {
   uint8_t running = 1;
 
+  for (int i = 0; i < argc; ++i)
+    if (argv[i][0] == '-')
+      switch (argv[i][1])
+      {
+        case 'h':
+          if (argv[i][2] == 0)
+          {
+            printHelp();
+            return 0;
+          }          
+
+          break;
+
+        default: break;
+      }
+
   dataFile = fopen(DATA_FILE_NAME,"r");
 
   if (!dataFile)