Fixes for ZAS, including fire, geometry, rebuilding consideration, and atmospheric lockdowns. In addition, improved supermatter, and humans now absorb all the oxygen they inhale, due to the ludicrous volumes of air normally encountered (Does not reduce effectiveness of air tanks)

code/modules/mob/living/carbon/human/life.dm

@@ -321,9 +321,10 @@
 			if (radiation)
 				if (radiation > 100)
 					radiation = 100
-					Weaken(10)
-					src << "\red You feel weak."
-					emote("collapse")
+					if(prob(3))
+						Weaken(10)
+						src << "\red You feel weak."
+						emote("collapse")
 
 				if (radiation < 0)
 					radiation = 0
@@ -541,7 +542,7 @@
 				oxygen_alert = max(oxygen_alert, 1)*/
 			else								// We're in safe limits
 				adjustOxyLoss(-5)
-				oxygen_used = breath.oxygen/6
+				oxygen_used = breath.oxygen
 				oxygen_alert = 0
 
 			breath.oxygen -= oxygen_used