Originally posted by Architector #4: Long story short, Half-Life's engine has a demo functionality, allowing one to record gameplay and then play it back, and that also has functionality of adding "waypoints" for a camera to follow. Those waypoints are made with a free camera, which is probably what you are looking for, so go dabble with that.
During mid 2019, VCC member, Security Officer The Fonz had found a texture as well as a model in the 2005 tactical FPS game, SWAT 4. It is very likely these could be exact files due to both Half-Life 2 and SWAT 4 being from around the same time, both being published by Sierra, and having relatively the same timeline of being developed after each other's last release (Half-Life releasing 1998 1HKAGyN.