Smart Kudzu is now a mutation, instead of standard behavior

code/modules/events/spacevine.dm

@@ -66,6 +66,9 @@
 /datum/spacevine_mutation/proc/on_explosion(severity, obj/effect/spacevine/holder)
 	return
 
+/datum/spacevine_mutation/proc/on_search(severity, obj/effect/spacevine/holder)
+	return
+
 
 /datum/spacevine_mutation/space_covering
 	name = "space protective"
@@ -294,6 +297,14 @@
 		holder.entangle(crosser)
 
 
+/datum/spacevine_mutation/virulent_spread
+	name = "virulently spreading"
+	hue = "#FF8080"
+	quality = MINOR_NEGATIVE
+
+/datum/spacevine_mutation/virulent_spread/on_search(obj/effect/spacevine/holder)
+	return 1
+
 // SPACE VINES (Note that this code is very similar to Biomass code)
 /obj/effect/spacevine
 	name = "space vines"
@@ -536,6 +547,9 @@
 
 /obj/effect/spacevine/proc/spread()
 	var/list/dir_list = cardinal.Copy()
+	var/spread_search = FALSE // Whether to exhaustive search all 4 cardinal dirs for an open direction
+	for(var/datum/spacevine_mutation/SM in mutations)
+		spread_search |= SM.on_search(src)
 	while(dir_list.len)
 		var/direction = pick(dir_list)
 		dir_list -= direction
@@ -543,13 +557,12 @@
 		var/spread_success = FALSE
 		for(var/datum/spacevine_mutation/SM in mutations)
 			spread_success |= SM.on_spread(src, stepturf) // If this returns 1, spreading succeeded
-			stepturf = get_step(src,direction) //in case turf changes, to make sure no runtimes happen
 		if(!locate(/obj/effect/spacevine, stepturf))
 			if(stepturf.Enter(src))
 				if(master)
 					master.spawn_spacevine_piece(stepturf, src)
 				spread_success = TRUE
-		if(spread_success)
+		if(spread_success || !spread_search)
 			break
 
 /obj/effect/spacevine/ex_act(severity)