[WIP] Mine to the sky

[Codestar]

Thanks to the folks in the TIGSource technical sub forum I was able to implement different types of terrain blocks using a distance transform algorithm. These blocks would be harder to break and require users to have upgraded abilities. These would also have a higher chance of spawning rare minerals, so when the player has the appropriate stats, they can come back and mine them later. Here's an example of a full map with different terrain blocks placed throughout the room.