Add labels for cracked floor metatiles

src/field_tasks.c

@@ -635,9 +635,12 @@ static void AshGrassPerStepCallback(u8 taskId)
     }
 }
 
+// This function uses the constants for gTileset_Cave's metatile labels, but other tilesets with
+// the CrackedFloorPerStepCallback callback use the same metatile numbers for the cracked floor
+// and hole metatiles, such as gTileset_MirageTower.
 static void SetCrackedFloorHoleMetatile(s16 x, s16 y)
 {
-    MapGridSetMetatileIdAt(x, y, MapGridGetMetatileIdAt(x, y) == 0x22f ? 0x206 : 0x237);// unsure what these are referring to
+    MapGridSetMetatileIdAt(x, y, MapGridGetMetatileIdAt(x, y) == METATILE_Cave_CrackedFloor ? METATILE_Cave_CrackedFloor_Hole : METATILE_Pacifidlog_SkyPillar_CrackedFloor_Hole);
     CurrentMapDrawMetatileAt(x, y);
 }