Add string-based linedef arguments to UDMF

And adapt the setup for linedef type 443 (Call Lua function) as a test.

Test files:

• srb2win-stringargs.exe (Updated 11/01/2020)
• callluafunction.wad

added 184 commits

• f0d663ea...4745264a - 182 commits from branch udmf-next
• bac379a7 - Merge branch 'udmf-next' into stringargs
• b163316c - Merge branch 'udmf-next' into stringargs

Compare with previous version

changed the description

At minimum, I would expect linedef->text to be removed entirely with this merge request and for all binary linedefs which require text have the text loaded into stringargs[0] instead of the former pointer. For backwards compatibility's sake, linedef.text in Lua could provide whatever was found in stringargs[0].

Some of the linedef types that use linedef->text require other new UDMF fields that haven't been implemented yet for their final setup. I don't see the point in wasting time creating an intermediate setup that will be replaced later on anyway.

I guess that makes sense for now. As long as we can agree that it's the eventual endpoint of all this development, right?

Yes.

merged

mentioned in commit cc9bae8b