Added a new random event: The immovable rod! It spawns somewhere outside the station, then proceeds to plow through the station in a straight line to a spot on the other side.

As a side effect, I had to add some ex_act() procs to things because the rods kept getting stuck on them.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@941 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/objects/storage/crates.dm

@@ -237,4 +237,24 @@
 		user.drop_item()
 		if(W)
 			W.loc = src.loc
-	else return attack_hand(user)
+	else return attack_hand(user)
+
+/obj/crate/ex_act(severity)
+	switch(severity)
+		if(1.0)
+			for(var/obj/O in src.contents)
+				del(O)
+			del(src)
+			return
+		if(2.0)
+			for(var/obj/O in src.contents)
+				if(prob(50))
+					del(O)
+			del(src)
+			return
+		if(3.0)
+			if (prob(50))
+				del(src)
+			return
+		else
+	return