static int Lua_FS_dofile(lua_State *L) {
const char *filename = luaL_optstring(L, 1, NULL);
int n = lua_gettop(L);
if (PHYSFS_exists(filename)) {
if (FS_loadFile(L, filename) == FILEIO_ERROR) {
return lua_error(L);
}
} else if (luaL_loadfile(L, filename) != 0) {
return lua_error(L);
}
lua_call(L, 0, LUA_MULTRET);
return lua_gettop(L) - n;
}
/* based on code from lua.c of the Lua distribution */
static int loader_PhysFS(lua_State *L) {
const char *filename;
const char *name = luaL_checkstring(L, 1);
int result;
filename = findfile(L, name);
if (filename == NULL) {
return 1; /* library not found in this path */
}
result = FS_loadFile(L, filename);
if (result == FILEIO_ERROR) {
return luaL_error(L, "error loading module " LUA_QS " from file "
LUA_QL("searchpath://%s") ":\n\t%s",
lua_tostring(L, 1), filename, lua_tostring(L, -1));
}
return 1; /* library loaded successfully */
}
/* main - function - entry point */
int main(int argc, char *argv[]) {
lua_State *L;
SDL_Event event;
Uint32 lastTick; /* Last iteration's tick value */
Uint32 delta = 0;
int i, n, narg;
char *filename = NULL;
fprintf(stdout, "%s v%s\n", PROG_NAME, VERSION);
if (argc > 1) {
n = 1;
if (strcmp(argv[1], "--") != 0)
filename = argv[1];
} else {
n = argc - 1;
}
L = luaL_newstate(); /* initialize Lua */
luaL_openlibs(L); /* load Lua base libraries */
FS_Init(L, argv, &filename); /* initialize virtual filesystem */
/* register Lua functions */
lua_newtable(L);
luaopen_main(L, NULL);
luaopen_fileio(L, NULL);
luaopen_font(L, NULL);
luaopen_graphics(L, NULL);
luaopen_sound(L, NULL);
luaopen_mouse(L, NULL);
luaopen_keyboard(L, NULL);
luaopen_movie(L, NULL);
lua_setglobal(L, NAMESPACE);
/* put luaopen_oocairo in package.preload["oocairo"] */
lua_getglobal(L, "package");
lua_getfield(L, -1, "preload");
lua_pushcfunction(L, luaopen_oocairo);
lua_setfield(L, -2, "oocairo");
/* put luaopen_socket_core in package.preload["socket.core"] */
lua_pushcfunction(L, luaopen_socket_core);
lua_setfield(L, -2, "socket.core");
/* put luaopen_mime_core in package.preload["mime.core"] */
lua_pushcfunction(L, luaopen_mime_core);
lua_setfield(L, -2, "mime.core");
lua_pop(L, 2);
/* push the error function for the protected calls later on */
lua_pushcfunction(L, error_function);
/* load and compile main lua file */
if (FS_loadFile(L, filename) == FILEIO_ERROR) {
error(L, "Error loading '%s':\n\t%s", filename, lua_tostring(L, -1));
}
/* push all script arguments */
/* create arg-table for the command-line-arguments */
/* copied from lua.c of the Lua distribution */
narg = argc - (n+1); /* number of arguments to the script */
luaL_checkstack(L, narg+2, "too many arguments to script");
for (i=n+1; i<argc; i++) {
lua_pushstring(L, argv[i]);
}
lua_createtable(L, narg, n+1);
for (i=0; i<argc; i++) {
lua_pushstring(L, argv[i]);
lua_rawseti(L, -2, i - n);
}
lua_setglobal(L, "arg");
/* run the compiled chunk */
if ((lua_pcall(L, narg, 0, -(narg+2)) != 0) && !check_for_exit(L)) {
error(L, "Error running '%s':\n\t%s", filename, lua_tostring(L, -1));
}
/* the error function stays on the stack */
if (SDL_GetVideoSurface() == NULL)
error(L, "Error: " PROG_NAME " was not initialized by " NAMESPACE ".init()!\n");
/* main loop */
/* Wait until SDL_QUIT event type (window closed) or a call to scrupp.exit() occurs */
while ( !done ) {
lastTick = SDL_GetTicks();
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
/* maybe the 'main' table has changed
so get a new reference in every cycle */
lua_getglobal(L, "main");
if (lua_isnil(L, -1)) {
error(L, "Error: Table 'main' not found!\n");
}
/* at this point, the stack always contains
the error function and the 'main' table */
/* main.render(delta) */
lua_getfield(L, -1, "render");
lua_pushinteger(L, delta);
if ((lua_pcall(L, 1, 0, -4) != 0) && !check_for_exit(L)) {
error(L, "Error running main.render:\n\t%s\n", lua_tostring(L, -1));
}
SDL_GL_SwapBuffers();
while ( SDL_PollEvent( &event ) ) {
switch ( event.type ) {
case SDL_QUIT:
done = 1;
break;
case SDL_KEYDOWN:
lua_getfield(L, -1, "keypressed");
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop if it's nil */
break;
}
lua_pushliteral(L, "Scrupp:key_table");
lua_rawget(L, LUA_REGISTRYINDEX);
lua_rawgeti(L, -1, event.key.keysym.sym);
lua_remove(L, -2); /* remove the key_table */
if ((lua_pcall(L, 1, 0, -4) != 0) && !check_for_exit(L)) {
error(L, "Error running main.keypressed:\n\t%s\n", lua_tostring(L, -1));
}
break;
case SDL_KEYUP:
lua_getfield(L, -1, "keyreleased");
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop if it's nil */
break;
}
lua_pushliteral(L, "Scrupp:key_table");
lua_rawget(L, LUA_REGISTRYINDEX);
lua_rawgeti(L, -1, event.key.keysym.sym);
lua_remove(L, -2); /* remove the key_table */
if ((lua_pcall(L, 1, 0, -4) != 0) && !check_for_exit(L)) {
error(L, "Error running main.keyreleased:\n\t%s\n", lua_tostring(L, -1));
}
break;
case SDL_MOUSEBUTTONDOWN:
lua_getfield(L, -1, "mousepressed");
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop if it's nil */
break;
}
lua_pushinteger(L, event.button.x);
lua_pushinteger(L, event.button.y);
lua_pushstring(L, buttonNames[event.button.button-1]);
if ((lua_pcall(L, 3, 0, -6) != 0) && !check_for_exit(L)) {
error(L, "Error running main.mousepressed:\n\t%s\n", lua_tostring(L, -1));
}
break;
case SDL_MOUSEBUTTONUP:
lua_getfield(L, -1, "mousereleased");
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop if it's nil */
break;
}
lua_pushinteger(L, event.button.x);
lua_pushinteger(L, event.button.y);
lua_pushstring(L, buttonNames[event.button.button-1]);
if ((lua_pcall(L, 3, 0, -6) != 0) && !check_for_exit(L)) {
error(L, "Error running main.mousereleased:\n\t%s\n", lua_tostring(L, -1));
}
break;
case SDL_VIDEORESIZE:
lua_getfield(L, -1, "resized");
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop if it's nil */
break;
}
lua_pushinteger(L, event.resize.w);
lua_pushinteger(L, event.resize.h);
if ((lua_pcall(L, 2, 0, -5) != 0) && !check_for_exit(L)) {
error(L, "Error running main.resized:\n\t%s\n", lua_tostring(L, -1));
}
break;
}
}
lua_pop(L, 1); /* pop 'main' table */
delta = SDL_GetTicks() - lastTick;
/*
if (delta>1) {
fprintf(stdout, "delta: %d\n", delta);
}
*/
while (delta < minimumDelta) {
SDL_Delay(1);
delta = SDL_GetTicks() - lastTick;
}
}
lua_close(L);
return 0;
}
