How does dungeon level regeneration work?

[Thraka]

First off, tome is awesome! This should totally be the future of roguelikes.

When I go into the dungeon, out, and back in, it keeps the layout but there are new items all over and new enemy's around. Is this normal?

[Taxorgian]

Yes it is normal after a certain amount of game time elapses. But items inside an unopened vault are saved.

[escargot]

You sure? I thought opened vaults were also "holy" ground for items.

I'd also like to add that artifacts don't decay.

[Taxorgian]

If you clear out a vault new junk can be generated inside, so I thought it might lose some of the ones left behind.

[Thraka]

One one problem is that I can instantly see all the items that are regenerated in the rooms. Does anyone know how long it takes for a floor to regenerate? It seems too fast. Just leaving the floor, regenerating, and entering it = a new set of things to fight.

[Thraka]

Or even leaving first level of the dungeon walking to the town, selling stuff, coming back it's all regenerated

[Taxorgian]

It has to do with in-game time. If you go down a dungeon and then come back up new stuff is generated on the floor on the way up.