Sanity checks, miscellaneous bugfixes, failsafes.

Disposals no longer indiscriminately let items land inside it - the items have to have been thrown by someone.

The ongoing attempt to fix the thousands of runtimes plaguing the game.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3195 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/mecha/mech_fabricator.dm

@@ -288,13 +288,14 @@
 		return output
 
 	proc/remove_resources(var/obj/item/mecha_parts/part)
-		for(var/resource in part.construction_cost)
-			if(resource in src.resources)
-				src.resources[resource] -= get_resource_cost_w_coeff(part,resource)
+		if(istype(part, /obj/item/mecha_parts/part))
+			for(var/resource in part.construction_cost)
+				if(resource in src.resources)
+					src.resources[resource] -= get_resource_cost_w_coeff(part,resource)
 		return
 
 	proc/check_resources(var/obj/item/mecha_parts/part)
-		if(istype(part, /obj/item))
+		if(istype(part, /obj/item/mecha_parts/part))
 			for(var/resource in part.construction_cost)
 				if(resource in src.resources)
 					if(src.resources[resource] < get_resource_cost_w_coeff(part,resource))

code/game/objects/radio/radio.dm

@@ -261,6 +261,8 @@ var/GLOBAL_RADIO_TYPE = 1 // radio type to use
 			channel = null
 		if (!istype(connection))
 			return
+		if (!connection)
+			return
 
 
 

code/game/turf.dm

@@ -496,6 +496,10 @@
 		usr << "\red You don't have the dexterity to do this!"
 		return
 
+	if(!istype(src, /turf/simulated/wall/r_wall))
+		return // this may seem stupid and redundant but apparently floors can call this attackby() proc, it was spamming shit up. -- Doohl
+
+
 	if (istype(W, /obj/item/weapon/weldingtool) && W:welding)
 		W:eyecheck(user)
 		var/turf/T = user.loc