Room:GetFrameCount will always give -1 when MC_PRE_ROOM_ENTITY_SPAWN gets triggered by waves spawning within said callback. The thing that makes this specially silly is that this is not the case for similar stuff like challenge room wave spawns, in those cases you can get the correct framecount in the pre room spawn callback.
Room:GetFrameCount will always give -1 when MC_PRE_ROOM_ENTITY_SPAWN gets triggered by waves spawning within said callback. The thing that makes this specially silly is that this is not the case for similar stuff like challenge room wave spawns, in those cases you can get the correct framecount in the pre room spawn callback.