[Add] Data files can be defined at runtime!

bin/conf.example

@@ -3,12 +3,19 @@ width       = 800
 height      = 640
 fullscreen  = 0
 
+-- SCREEN.
+fps = 0
+
 -- JOYSTICK.
 -- Can be number or substring of joystick name.
 joystick = "Precision"
 
 -- KEYBINDINGS.
 -- Type can be keyboard, jaxis or jbutton.
+--
+-- If left is an axis, it will automatically set right to the same axis.
+-- setting both to the same axis (key).
+-- You can use reverse = 1 option to reverse them.
 accel = { type = "jbutton", key = 0 }
 left  = { type = "jaxis", key = 0 }
 right = { type = "jaxis", key = 0 }

scripts/ai/test.lua

@@ -1,9 +1,9 @@
 function follow()
   target =1
   dir = face(target)
-  dist = getdist(getpos(target))
+  dist = getdist(getpos(targer))
   if dir < 10 and dist > 100 then
-    accel()
+    accel(dist/100-1)
   end
 end
 

src/main.c

@@ -28,6 +28,9 @@ extern const char* keybindNames[]; // Keybindings.
 static int quit = 0; // Primary loop.
 static unsigned int time = 0; // Calculate FPS and movement.
 
+#define DATA_DEF  "data"
+char* data = NULL;
+
 static int show_fps = 1; // Default - True.
 
 // Prototypes.
@@ -43,8 +46,8 @@ static void print_usage(char** argv) {
   LOG("USAGE: %s [OPTION]", argv[0]);
   LOG("Options are:");
   LOG("\t-f,    --fullscreen  - Fullscreen");
-  //LOG("\t-w n - Set width to (n)");
+  LOG("\t-F,    --fps         - Toggle frames per second");
-  //LOG("\t-h n - Set height to (n)");
+  LOG("\t-d s,  --data s      - Set the data file to be s");
   LOG("\t-j n,  --joystick n  - Use joystick (n)");
   LOG("\t-J s,  --joystick s  - Use joystick whose name contains (s)");
   LOG("\t-h --help            - Display this message and exit.");
@@ -56,6 +59,8 @@ int main(int argc, char** argv) {
   // Initialize SDL for possible warnings.
   SDL_Init(0);
   // Default values..
+  // Global.
+  data = DATA_DEF;
   gl_screen.w = 800;
   gl_screen.h = 640;
   gl_screen.fullscreen = 0;
@@ -72,6 +77,10 @@ int main(int argc, char** argv) {
   // Use Lua to parse configuration file.
   lua_State* L = luaL_newstate();
   if(luaL_dofile(L, CONF_FILE) == 0) { // Conf file exists.
+    // Global.
+    lua_getglobal(L, "data");
+    if(lua_isstring(L, -1))
+      data = strdup((char*)lua_tostring(L, -1));
     // OpenGL properties.
     lua_getglobal(L, "width");
     if(lua_isnumber(L, -1))
@@ -144,6 +153,7 @@ int main(int argc, char** argv) {
   static struct option long_options[] = {
     { "fullscreen",   no_argument,        0, 'f' },
     { "fps",          optional_argument,  0, 'F' },
+    { "data",         required_argument,  0, 'd' },
     { "joystick",     required_argument,  0, 'j' },
     { "joystick",     required_argument,  0, 'J' },
     { "help",         no_argument,        0, 'h' },
@@ -152,13 +162,17 @@ int main(int argc, char** argv) {
   };
   int option_index = 0;
   int c = 0;
-  while((c = getopt_long(argc, argv, "fFJ:j:hv", long_options, &option_index)) != -1) {
+  while((c = getopt_long(argc, argv, "fFd:J:j:hv", long_options, &option_index)) != -1) {
     switch(c) {
       case 'f':
         gl_screen.fullscreen = 1;
         break;
       case 'F':
         if(optarg != NULL) show_fps = atoi(optarg);
+        else show_fps = !show_fps;
+        break;
+      case 'd':
+        data = strdup(optarg);
         break;
       case 'j':
         indjoystick = atoi(optarg);

src/main.h

@@ -5,5 +5,6 @@
 
 #define ABS(X)  ((X<0)?-X:X)
 
-#define DATA "data" // Data file.
+extern char* data; // Modifiable datafile.
+#define DATA data // Data file.