added in quitting from game if window close button pressed

src/game.cpp

@@ -428,6 +428,8 @@ int main(int argc, char** argv)
 		std::cerr << e.message << "\n";
 	} catch(gui::button::error&) {
 		std::cerr << "Could not create button: Image could not be found\n";
+	} catch(CVideo::quit&) {
+		//just means the game should quit
 	}
 
 	return 0;

src/video.cpp

@@ -230,6 +230,12 @@ void pump_events()
 					resize_dimensions.first = resize->w;
 					resize_dimensions.second = resize->h;
 				}
+
+				break;
+			}
+
+			case SDL_QUIT: {
+				throw CVideo::quit();
 			}
 		}
 	}

src/video.hpp

@@ -51,6 +51,8 @@ class CVideo {
 
 	struct error {};
 
+	struct quit {};
+
      private:
 
 	SDL_Surface* frameBuffer;