that is a big chunk of code...
it will take me a while to go through it,
but let me first of all say thank you.

I'm currently quite busy outside of this.

there will be a few question... after I've read through this.

I see quite a few things missing here...
first up is there are no cmake files to generate the VS projects/workspaces/solutions

Ideally there would be source code for the *.lib as those can't be used on Linux.

I've tried to take a vague look at what's here but my browser keeps crapping out due to the number of changes, but that said this looks like the AVP2 code is being included among everything too, in which case, it's important to note that AVP2 was on a slightly different version of the LithTech engine from what I remember. I'm also not sure if it's still the case but Fox has for a long time been issuing take-down notices for the AVP2 code (despite it being officially released).

Hello.
First of all I would like to say that I have been following this project for a while and you are making really great progress.

I make this pull request to indicate the availability of the source code of these games as potential games for support by this project.

Contract JACK source came from this forum https://www.mpgh.net/forum/showthread.php?t=759613

AvP2 source is avilable on Internet archive https://archive.org/details/AvP2_src
from 2020-06-15 without takedown. At first for some time it was available on the producer's official ftp.