: (Derpy) Collapsible charcoal piling

Getting steel age into the game needs place-able piles of charcoal. Added a “quick“ bonus feature that they also collapse when piled too high. Was a bit tricky to make the falling block physics adjust for coal layer levels. Not sure if worth was the effort as it still rather derpy looking and has issues, like those charcoal bits flying off) ¯\_(ツ)_/¯