/**
* @brief Loads a background script by name.
*/
int background_load( const char *name )
{
int ret;
lua_State *L;
const char *err;
/* Free if exists. */
background_clearCurrent();
/* Load default. */
if (name == NULL)
bkg_cur_L = bkg_def_L;
/* Load new script. */
else
bkg_cur_L = background_create( name );
/* Comfort. */
L = bkg_cur_L;
if (L == NULL)
return -1;
/* Run Lua. */
ret = 0;
lua_getglobal(L,"background");
ret = lua_pcall(L, 0, 0, 0);
if (ret != 0) { /* error has occured */
err = (lua_isstring(L,-1)) ? lua_tostring(L,-1) : NULL;
WARN("Background -> 'background' : %s",
(err) ? err : "unknown error");
lua_pop(L, 1);
ret = -1;
}
return 0;
}
/**
* @brief Cleans up the background stuff.
*/
void background_clear (void)
{
/* Destroy current background script. */
background_clearCurrent();
/* Clear the backgrounds. */
background_clearImgArr( &bkg_image_arr_bk );
background_clearImgArr( &bkg_image_arr_ft );
}
/**
* @brief Loads a background script by name.
*/
int background_load( const char *name )
{
int ret, errf;
lua_State *L;
const char *err;
/* Free if exists. */
background_clearCurrent();
/* Load default. */
if (name == NULL)
bkg_cur_L = bkg_def_L;
/* Load new script. */
else
bkg_cur_L = background_create( name );
/* Comfort. */
L = bkg_cur_L;
if (L == NULL)
return -1;
#if DEBUGGING
lua_pushcfunction(L, nlua_errTrace);
errf = -2;
#else /* DEBUGGING */
errf = 0;
#endif /* DEBUGGING */
/* Run Lua. */
ret = 0;
lua_getglobal(L,"background");
ret = lua_pcall(L, 0, 0, errf);
if (ret != 0) { /* error has occurred */
err = (lua_isstring(L,-1)) ? lua_tostring(L,-1) : NULL;
WARN("Background -> 'background' : %s",
(err) ? err : "unknown error");
lua_pop(L, 1);
}
#if DEBUGGING
lua_pop(L, 1);
#endif /* DEBUGGING */
return ret;
}