I assume this is probably a bit too much to ask, but adding world portals (like in Portal 2) would be amazing. Even though of no use in the single player campaign it would be a great feature for mappers.
In case somebody doesn’t know what a world portal is:
youtube.com/watch?v=9zMITi-l10c
This actually would help with a number of maps that don’t quite fit together (I’m looking at you, c1a2c…), but I have no idea how these would play with Black Mesa’s substantially different codebase.
The effect can in many cases be faked with hidden trigger_teleports- take a look at bm_c1a4c or my upcoming pd_c1a2a for examples of this.
These were used to great effect in Portal 2, but it seems like it is a feature for that specific branch of the engine, which I doubt the devs have actual code for.
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.