Implemented and integrated title screen - now game crashes at launch, though

game.cpp

@@ -7,8 +7,8 @@
 int Game::NODE_RADIUS = 10;
 
 
-Game::Game(SDL_Surface* display)
-    : GameState(display)
+Game::Game(stack<GameState*>* state_stack, SDL_Surface* display)
+    : GameState(state_stack, display)
 {
     background = NULL;
 }
@@ -83,12 +83,6 @@ void Game::render()
 }
 
 
-void Game::on_exit()
-{
-    throw StateExit();
-}
-
-
 void Game::on_lbutton_down(int x, int y)
 {
     data.do_vertex(x, y, NODE_RADIUS);