/**
* \brief Calls sol.main.on_draw() if it exists.
* \param dst_surface The destination surface.
*/
void LuaContext::main_on_draw(Surface& dst_surface) {
push_main(l);
on_draw(dst_surface);
menus_on_draw(-1, dst_surface);
lua_pop(l, 1);
}
/**
* @brief Calls the on_draw() method of a Lua game.
* @param game A game.
* @param dst_surface The destination surface.
*/
void LuaContext::game_on_draw(Game& game, Surface& dst_surface) {
push_game(l, game.get_savegame());
menus_on_draw(-1, dst_surface);
on_draw(dst_surface);
lua_pop(l, 1);
}
/**
* \brief Calls the on_draw() method of a Lua menu.
* \param menu_ref A reference to the menu object.
* \param dst_surface The destination surface.
*/
void LuaContext::menu_on_draw(
const ScopedLuaRef& menu_ref,
const SurfacePtr& dst_surface
) {
push_ref(l, menu_ref);
on_draw(dst_surface);
menus_on_draw(-1, dst_surface); // Draw children menus if any.
lua_pop(l, 1);
}
/**
* \brief Calls the on_draw() method of a Lua game if it is defined.
*
* Also calls the method on its menus.
*
* \param game A game.
* \param dst_surface The destination surface.
*/
void LuaContext::game_on_draw(Game& game, Surface& dst_surface) {
if (!game.get_savegame().is_known_to_lua()) {
return;
}
push_game(l, game.get_savegame());
if (userdata_has_field(game.get_savegame(), "on_draw")) {
on_draw(dst_surface);
}
menus_on_draw(-1, dst_surface);
lua_pop(l, 1);
}
