This is a small demonstration map showing you how to get moving terrain levels done just like in the Opposing Force Intro. This time how ever it's for default Half-Life1. Unlike in other tutorials ( http://twhl.info/articulator.php?art=111)
I completely make due without trigger_changetargets or similar methods.
Unlike in other people their attempts my approach in theory requires only a small handful of entities as you can re-use most of em. It's pretty straight forward and nobody should have trouble understanding the concept behind it.
In this example I worked mostly with env_render entities so you can imagine where this is going. But have a look for yourself.
The included bsp. map contains all textures so just paste it into your Hl1/opfor maps folder to see how things work.
When you open the rmf. in Hammer make sure to load my provided Wad. file as well because I've added you detailed explanations in form of custom textures what each specific entity group does. The demonstration ends when reaching the tunnel. Just quit the map afterwards.