Which functions, addresses and offsets are you currently still looking for?
Edit: maybe comparing CoD1 with UO is easier.
https://github.com/riicchhaarrd/CoDExtended
Edit 2:
CoD1 and UO are split into two: a binary (coduo_lnxded) and a library (game.mp.uo.i386.so).
The game library contains GSC script functions and methods.
I think the UO code in your screenshot loads the game library like in CoDExtended.
Loading the library
https://github.com/riicchhaarrd/CoDE...xtended.c#L257
https://github.com/riicchhaarrd/CoDE...ymodule.c#L231
Loading the stock functions:
https://github.com/riicchhaarrd/CoDE...script.c#L1862
Return the stock or custom function:
https://github.com/riicchhaarrd/CoDE.../script.c#L450