Binding of Isaac: Rebirth Wiki
Advertisement
Binding of Isaac: Rebirth Wiki

I'm not sure how to add a message into the undo - Please attempt this yourself and clarify / add a source for the effect. There is plenty of space for the Planetarium to generate, however it still fails to do so on mor ethan 60% of occassions where it would have 100% chance to spawn. This goes on for multiple floors.

> There is plenty of space for the Planetarium to generate
With how the level generator works, just because there is a "dead end" doesn't mean a planetarium can be placed there. The game only guarantees to generate 5(AB+, I doubt REP increased it) valid dead ends. The level generator first creates the floor layout(shapes) and then places the room types. While placing dead ends, it will resize the room shape to fit the room type. For example https://i.imgur.com/iTv3rAE.png, on this floor the planetarium was 100%. It wasn't placed because that sacrifice room was originally an which means that 1x1 "dead end" wasn't actually a dead end because it was neighboring the . The was considered a dead end because when the level generator is placing shapes it only checks for neighbors as if the shape were a 1x1 before adding them to the list of dead ends. --Blcd (talk) 15:15, 16 May 2021 (UTC)