can you force compat with DSDA?

I think there's now SETTINGS lump or somesuch. Never used it though.

Indeed you can, throw in a txt file named "COMPLVL" that says "vanilla", "boom", "mbf" or "mbf21" https://doomwiki.org/wiki/COMPLVL

You can include an OPTIONS lump with the string "comp_telefrag 1" (without the quotes). When comp_telefrag is 0, as it is for MBF and MBF21, only spawn cubes telefrag, but when it's 1 it happens for anything on MAP30 instead.

The COMPLVL lump will set the complevel if players don't specify it themselves, while the OPTIONS lump sets compatibility flags if people use MBF or MBF21 complevel anyway.

2 hours ago, NiGHTS108 said:

Indeed you can, throw in a txt file named "COMPLVL" that says "vanilla", "boom", "mbf" or "mbf21" https://doomwiki.org/wiki/COMPLVL

⁸thanks so much buddy

1 hour ago, Shepardus said:

You can include an OPTIONS lump with the string "comp_telefrag 1" (without the quotes). When comp_telefrag is 0, as it is for MBF and MBF21, only spawn cubes telefrag, but when it's 1 it happens for anything on MAP30 instead.

 

The COMPLVL lump will set the complevel if players don't specify it themselves, while the OPTIONS lump sets compatibility flags if people use MBF or MBF21 complevel anyway.

So I add this line in the lump night's wasctalking about?

Just now, Clippy said:

So I add this line in the lump night's wasctalking about?

No, COMPLVL and OPTIONS are different lumps. For the former, you would have a lump called "COMPLVL" that's just a text string "vanilla," which sets the default complevel (if no -complevel parameter is supplied by the user). For the latter, you would have a lump called "OPTIONS" with the string "comp_telefrag 1," which sets compatibility flags that are available for MBF and MBF21 complevels (the OPTIONS lump and the compatibility flags originate with MBF). If you have the COMPLVL lump set to vanilla you don't really need the OPTIONS lump unless someone's intentionally forcing complevel 11 or 21 with a -complevel parameter, but if you want to cover all your bases it's there.

Thanks buddy I hope by strings you mean just put those words in those lumps 

This helps so much good ppl