Lighting and more stuff

This feels like some good progress. Got some simple lighting in the game, and you can see areas which you’ve been to in a blueish hue on the map. There’s a score, the pickaxe’s durability depletes whenever you mine something, and there’s a rudimentary game over screen, yay!

Hi buddy. You've been down here long?

Hi buddy. You’ve been down here long?

Next will probably be some kind of high score system, maybe a message log and more stuff to find!