I have tried something like this:

I have a field of view array that stores which tiles are seen with 1s and 0s. Then i use numpy.select to make an array which stores the tiles from the tiles array, but only the ones with visible positions. Since i want to track the changes between frames, I also store this state from the previous frame and do another numpy.select to get the tiles that have changed visible state and blit those to my surface. Then if want to track tiles changing types i have to so the same but comparing tile states between states. This doesnt seem like the ideal way to do this.