Instead of a separate disruptor rune:

When tnt explodes
	if tnt was lit while touching a protected block && that block's generator has glowstone block(s) in fuel chest
		the tnt can destroy protected blocks (and adds 5 minutes of unprotectability to the blocks in a small radius)
		if any protected blocks were destroy (or a protected block gained unprotectability)
			a glowstone block is removed from the fuel chest of the generator the tnt was touching when lit

PROBLEM: how to link lit tnt with a specific explosion event
SOLUTION?: track location of tnt entity once lit (recheck every 200ms)
		then, on explosion event, find the closest nearby, tracked tnt entity that was removed within the last 1 second
			assume that closest tnt entity was the entity that caused the explosion



MAYBE: instead of glowstone block in fuel chest that is used when tnt explodes:
		when tnt explodes, if a glowstone block was destroyed
			protected blocks can be destroyed
			each destroyed glowstone block adds unprotectability to all 6 neighbors for 5 minutes

MAYBE: ghast's tear in fuel chest (when tnt explodes) results in 24 hour reinforced mode followed by 2 hour vulnerable mode
	reinforced mode means protected blocks can't be destroyed by tnt (nor gain unprotectability)
		also, in reinforced mode, new blocks can't be protected that were not protected when fortress went into reinforced mode
	vulnerable mode means it can't go into reinforced mode