I'm making a game with a room system similar to rouge legacy. There will be lots of rooms with their own tilemaps and enemy's. I'm not sure if it's better to have tilemaps in each area while playing, or if having them be loaded using an array each time would be better. I'm trying to keep the oject count down.
Also i'm wondering if objects outside the screen with no collisions or code running will slow things down. If I have 300 objects out that are 1x1 that only serve to spawn objects when needed is that a bad way of doing it?
I can figure out how to pull this off but I want to start on the right foot. I'm hoping to make very large areas. I'll be using a very low retro resolution so that should hopefully help.