VR world update

code/game/objects/effects/blockers_yw.dm

@@ -0,0 +1,12 @@
+//simple mob blocker to use in VR to stop mobs from going through
+/obj/effect/mobblocker
+	name = "Mob blocker"
+	desc = "Blocks simple mobs from going through"
+	icon = 'icons/effects/effects.dmi'
+	icon_state = "directional_shield"
+	anchored = TRUE
+
+/obj/effect/mobblocker/CanPass(atom/movable/mover, turf/target)
+	if(istype(mover, /mob/living/simple_mob))
+		return FALSE
+	return TRUE