keystate = SDL_GetKeyState(NULL);
        if (keystate[SDLK_UP])
            move_player(&game, MOVE_UP);
        else if (keystate[SDLK_RIGHT])
            move_player(&game, MOVE_RIGHT);
        else if (keystate[SDLK_DOWN])
            move_player(&game, MOVE_DOWN);
        else if (keystate[SDLK_LEFT])
            move_player(&game, MOVE_LEFT);
        else if (keystate[SDLK_UP] && keystate[SDLK_RIGHT])
            move_player(&game, MOVE_UPRIGHT);