How do I split a level?

The map I am working on is becoming too big and I am intending to split it. I know how to save prefabs but how do I split it and also keep all the Things in their place?

Select sectors additively and cut-paste them into a new map. Then select things originally placed in those sectors and cut-paste them into the new map too.

Or select the sectors first, then switch to things mode, select the things, then hit E for "Edit Selection" mode, and you might be able to cut-paste them together then, although I'm not sure about this.

One more question, how do I make a new level within the same WAD?

1. Create a new map, give it a mapslot different from all already occupied mapslots in your existing wad.
2. Save Map Into -> your wad. (NOT "Save Map As" !!!)

scifista42 said:

1. Create a new map, give it a mapslot different from all already occupied mapslots in your existing wad.
2. Save Map Into -> your wad. (NOT "Save Map As" !!!)

Thank you! Made a backup just in case.

EDIT: It worked!

Maybe this way?

@thesecondcomingdoom: That's a bad method. You can notice that even after you "split" the sectors this way, they remain "joined" - they both get selected if you select one of them, and they forcedly share properties, because they are in fact one and the same sector, consisting of 2 parts which aren't physically connected, which the map format fully allows. You'd have to take additional steps to properly "unjoin" them if you wanted to treat each one separately.

scifista42 said:

@thesecondcomingdoom: That's a bad method. You can notice that even after you "split" the sectors this way, they remain "joined" - they both get selected if you select one of them, and they forcedly share properties, because they are in fact one and the same sector, consisting of 2 parts which aren't physically connected, which the map format fully allows. You'd have to take additional steps to properly "unjoin" them if you wanted to treat each one separately.

Oh, that's right.

DooM_RO said:

The map I am working on is becoming too big and I am intending to split it. I know how to save prefabs but how do I split it and also keep all the Things in their place?

The way I'd do it:

1. Copy the map. So there's MAP01.wad, I copy that as MAP02.wad.
2. Delete stuff from MAP01.wad.
3. Delete different stuff from MAP02.wad.

Thank you guys. I'm making good progress on my WAD. I will post a WIP version soon.