What determines entity transitions?

Well, “replying to my own thread a month after the issue it was created to address was apparently resolved, but not technically necroposting because it turns out I neglected to mention a few key details in my previous solution” was kind of clunky, so you’ve gotta cut me some slack here…

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.