+void display_text_file(const std::string& filename)
+{
+ main_loop->push_screen(new TextScroller(filename));
+}
+
+void load_worldmap(const std::string& filename)
+{
+ using namespace WorldMapNS;
+
+ main_loop->push_screen(new WorldMap(filename));
+}
+
+void load_level(const std::string& filename)
+{
+ main_loop->push_screen(new GameSession(filename));
+}
+
+static SQInteger squirrel_read_char(SQUserPointer file)
+{
+ std::istream* in = reinterpret_cast<std::istream*> (file);
+ char c = in->get();
+ if(in->eof())
+ return 0;
+
+ return c;
+}
+
+void import(HSQUIRRELVM vm, const std::string& filename)
+{
+ IFileStream in(filename);
+
+ if(SQ_FAILED(sq_compile(vm, squirrel_read_char, &in,
+ filename.c_str(), SQTrue)))
+ throw SquirrelError(vm, "Couldn't parse script");
+
+ sq_pushroottable(vm);
+ if(SQ_FAILED(sq_call(vm, 1, SQFalse, SQTrue))) {
+ sq_pop(vm, 1);
+ throw SquirrelError(vm, "Couldn't execute script");
+ }
+ sq_pop(vm, 1);
+}
+
+void debug_collrects(bool enable)
+{
+ Sector::show_collrects = enable;
+}
+
+void debug_show_fps(bool enable)
+{
+ config->show_fps = enable;
+}
+
+void debug_draw_solids_only(bool enable)
+{
+ Sector::draw_solids_only = enable;
+}
+
+void save_state()
+{
+ using namespace WorldMapNS;
+
+ if(World::current() == NULL || WorldMap::current() == NULL)
+ throw std::runtime_error("Can't save state without active World");
+
+ WorldMap::current()->save_state();
+ World::current()->save_state();
+}
+
+void update_worldmap()
+{
+ using namespace WorldMapNS;
+
+ if(WorldMap::current() == NULL)
+ throw std::runtime_error("Can't update Worldmap: none active");
+
+ WorldMap::current()->load_state();
+}
+
+// not added to header, function to only be used by others
+// in this file
+bool validate_sector_player()
+{
+ if (Sector::current() == 0)
+ {
+ log_info << "No current sector." << std::endl;
+ return false;
+ }
+
+ if (Sector::current()->player == 0)
+ {
+ log_info << "No player." << std::endl;
+ return false;
+ }
+ return true;
+}
+
+void play_music(const std::string& filename)
+{
+ sound_manager->play_music(filename);
+}
+
+void play_sound(const std::string& filename)
+{
+ sound_manager->play(filename);
+}
+
+void grease()
+{
+ if (!validate_sector_player()) return;
+ ::Player* tux = Sector::current()->player; // Scripting::Player != ::Player
+ tux->physic.set_velocity_x(tux->physic.get_velocity_x()*3);
+}
+
+void invincible()
+{
+ if (!validate_sector_player()) return;
+ ::Player* tux = Sector::current()->player;
+ tux->invincible_timer.start(10000);
+}
+
+void ghost()
+{
+ if (!validate_sector_player()) return;
+ ::Player* tux = Sector::current()->player;
+ tux->set_ghost_mode(true);