Adds in limb replacement surgery, robolimbs, and all the crap for them. They can take more damage, require wires and welder to repair, but malfunction when they get more damaged, and explode when destroyed.

code/game/objects/stacks/glass.dm

@@ -214,6 +214,8 @@ SHARDS
 			var/mob/living/carbon/human/H = M
 			if(!((H.shoes) || (H.wear_suit && H.wear_suit.body_parts_covered & FEET)))
 				var/datum/organ/external/affecting = H.get_organ(pick("l_foot", "r_foot"))
+				if(affecting.robot)
+					return
 				H.Weaken(3)
 				affecting.take_damage(5, 0)
 				H.UpdateDamageIcon()