This is a regression: we've lost the ability for pillboxes to change their appearance based on their health. I know that we don't have partially damaged images for this, but it would be sensible for us to leave this code working, so that we're using as much of the final code in our tests as possible. Each damage state can just point to the same texture region.

Of course, if we're not going to have different appearances - I know you had mentioned health bars - then this can be deleted entirely. No point in leaving dead code.