hedwards: It wasn't intentional. I'd recommend looking up John Carmack's commentary because he specifically stated that the sliding along the walls the way that players could wasn't intended.
Presumably it was a byproduct of the code he wrote to prevent people from getting stuck up against walls when they were strafing.
This one? I haven't listened to it all, but I did hear him mention that things were "slidey around the doors" around 10:00, but that's it, and then demonstrate the wall slide that people would do.
The movement code (ClipMove) basically is like this:
- Try to move the player both X and Y,
- If that failed, try to move only X.
- if that failed, try to move only Y.
- If that failed, stand still.
Either way, it would be something I'd change about it.
DustFalcon1985: Just one more and that is Catacombs Armageddon and everything is complete!
And Catacomb Apocalypse. :)