Indestructible turfs are no longer affected by necropolis tendrils or the lava staff (#22641)

* Indestructible turfs are no longer affected by necropolis tendrils or the lava staff

* a better proc name

code/game/turfs/closed.dm

@@ -10,6 +10,9 @@
 	icon = 'icons/turf/walls.dmi'
 	explosion_block = 50
 
+/turf/closed/indestructible/TerraformTurf(path, defer_change = FALSE, ignore_air = FALSE)
+	return
+
 /turf/closed/indestructible/acid_act(acidpwr, acid_volume, acid_id)
 	return 0
 

code/game/turfs/open.dm

@@ -10,6 +10,9 @@
 	icon = 'icons/turf/floors.dmi'
 	icon_state = "floor"
 
+/turf/open/indestructible/TerraformTurf(path, defer_change = FALSE, ignore_air = FALSE)
+	return
+
 /turf/open/indestructible/sound
 	name = "squeeky floor"
 	var/sound

code/game/turfs/turf.dm

@@ -157,8 +157,12 @@
 	if(L)
 		qdel(L)
 
+//wrapper for ChangeTurf()s that you want to prevent/affect without overriding ChangeTurf() itself
+/turf/proc/TerraformTurf(path, defer_change = FALSE, ignore_air = FALSE)
+	return ChangeTurf(path, defer_change, ignore_air)
+
 //Creates a new turf
-/turf/proc/ChangeTurf(path, defer_change = FALSE,ignore_air = FALSE)
+/turf/proc/ChangeTurf(path, defer_change = FALSE, ignore_air = FALSE)
 	if(!path)
 		return
 	if(!use_preloader && path == type) // Don't no-op if the map loader requires it to be reconstructed
@@ -172,8 +176,8 @@
 	Destroy()	//❄
 	var/turf/W = new path(src)
 	W.proximity_checkers = old_checkers
-	
-	
+
+
 	if(!defer_change)
 		W.AfterChange(ignore_air)
 	W.blueprint_data = old_blueprint_data

code/modules/mining/lavaland/necropolis_chests.dm

@@ -665,21 +665,22 @@
 			user.visible_message("<span class='danger'>[user] points [src] at [T]!</span>")
 			timer = world.time + create_delay + 1
 			if(do_after(user, create_delay, target = T))
-				user.visible_message("<span class='danger'>[user] turns \the [T] into [transform_string]!</span>")
-				message_admins("[key_name_admin(user)] fired the lava staff at [get_area(target)]. [ADMIN_COORDJMP(T)]")
-				log_game("[key_name(user)] fired the lava staff at [get_area(target)] [COORD(T)].")
-				T.ChangeTurf(turf_type)
-				timer = world.time + create_cooldown
-				qdel(L)
+				var/old_name = T.name
+				if(T.TerraformTurf(turf_type))
+					user.visible_message("<span class='danger'>[user] turns \the [old_name] into [transform_string]!</span>")
+					message_admins("[key_name_admin(user)] fired the lava staff at [get_area(target)]. [ADMIN_COORDJMP(T)]")
+					log_game("[key_name(user)] fired the lava staff at [get_area(target)] [COORD(T)].")
+					timer = world.time + create_cooldown
+					playsound(T,'sound/magic/Fireball.ogg', 200, 1)
 			else
 				timer = world.time
-				qdel(L)
-				return
+			qdel(L)
 		else
-			user.visible_message("<span class='danger'>[user] turns \the [T] into [reset_string]!</span>")
-			T.ChangeTurf(reset_turf_type)
-			timer = world.time + reset_cooldown
-		playsound(T,'sound/magic/Fireball.ogg', 200, 1)
+			var/old_name = T.name
+			if(T.TerraformTurf(reset_turf_type))
+				user.visible_message("<span class='danger'>[user] turns \the [old_name] into [reset_string]!</span>")
+				timer = world.time + reset_cooldown
+				playsound(T,'sound/magic/Fireball.ogg', 200, 1)
 
 /obj/effect/overlay/temp/lavastaff
 	icon_state = "lavastaff_warn"

code/modules/mob/living/simple_animal/hostile/mining_mobs.dm

@@ -1047,7 +1047,7 @@
 		visible_message("<span class='boldannounce'>The tendril falls inward, the ground around it widening into a yawning chasm!</span>")
 		for(var/turf/T in range(2,src))
 			if(!T.density)
-				T.ChangeTurf(/turf/open/chasm/straight_down/lava_land_surface)
+				T.TerraformTurf(/turf/open/chasm/straight_down/lava_land_surface)
 		qdel(src)
 
 /mob/living/simple_animal/hostile/spawner/lavaland/goliath