public static void paint(Level level, Room room) {

    fill(level, room, Terrain.WALL);
    fill(level, room, 1, Terrain.EMPTY);

    for (Room.Door door : room.connected.values()) {
      door.set(Room.Door.Type.REGULAR);
    }

    level.exit = room.random(1);
    set(level, level.exit, Terrain.EXIT);
  }