More runtime errors squashed.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@231 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/objects/explosion.dm

@@ -4,7 +4,9 @@ proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impa
 			message_admins("Explosion with size ([devastation_range], [heavy_impact_range], [light_impact_range]) in area [epicenter.loc.name] ")
 
 		defer_powernet_rebuild = 1
-
+		if (!istype(epicenter, /turf))
+			epicenter = epicenter.loc
+			return explosion(epicenter, devastation_range, heavy_impact_range, light_impact_range, flash_range)
 		playsound(epicenter.loc, 'explosionfar.ogg', 100, 1, round(devastation_range*2,1) )
 		playsound(epicenter.loc, "explosion", 100, 1, round(devastation_range,1) )
 

code/game/objects/items/robot_parts.dm

@@ -123,7 +123,8 @@
 			W.loc = src
 			src.brain = W
 			var/mob/living/silicon/robot/O = new /mob/living/silicon/robot(get_turf(src.loc))
-			O.gender = src.brain.owner.gender
+			if (src.brain.owner)
+				O.gender = src.brain.owner.gender
 			//O.start = 1
 			O.invisibility = 0
 			O.name = "Cyborg"

code/game/objects/items/weapons/tools.dm

@@ -163,14 +163,16 @@ WELDINGTOOOL
 /obj/item/weapon/weldingtool/proc/eyecheck(mob/user as mob)
 	//check eye protection
 	var/safety = null
-
-	if (istype(user:head, /obj/item/clothing/head/helmet/welding) || istype(user:head, /obj/item/clothing/head/helmet/space))
-		safety = 2
-	else if (istype(user:glasses, /obj/item/clothing/glasses/sunglasses))
-		safety = 1
-	else if (istype(user:glasses, /obj/item/clothing/glasses/thermal))
-		safety = -1
-	else
+	if (istype(user, /mob/living/carbon/human))
+		if (istype(user:head, /obj/item/clothing/head/helmet/welding) || istype(user:head, /obj/item/clothing/head/helmet/space))
+			safety = 2
+		else if (istype(user:glasses, /obj/item/clothing/glasses/sunglasses))
+			safety = 1
+		else if (istype(user:glasses, /obj/item/clothing/glasses/thermal))
+			safety = -1
+		else
+			safety = 0
+	else if(istype(user, /mob/living/carbon))
 		safety = 0
 	switch(safety)
 		if(1)

code/game/objects/storage/crates.dm

@@ -214,5 +214,6 @@
 /obj/crate/attackby(obj/item/weapon/W as obj, mob/user as mob)
 	if(opened)
 		user.drop_item()
-		W.loc = src.loc
+		if(W)
+			W.loc = src.loc
 	else return attack_hand(user)

code/game/objects/weapons.dm

@@ -115,12 +115,14 @@
 		var/turf/T = src.loc
 		if (ismob(T))
 			T = T.loc
-		src.part1.loc = T
-		src.part2.loc = T
-		src.part1.master = null
-		src.part2.master = null
-		src.part1 = null
-		src.part2 = null
+		if (src.part1)
+			src.part1.loc = T
+			src.part1.master = null
+			src.part1 = null
+		if (src.part2)
+			src.part2.loc = T
+			src.part2.master = null
+			src.part2 = null
 
 		del(src)
 		return