" To avoid stair judder simply stick a ramp over the steps and entityalpha stairramp,0 "
When he said stair judder, I thought he meant edge aliasing!
That's a really clever solution to allowing the player to go up stairs though. The way I would have done it would have to make the player out of two spheres and figure out when one sphere can't move forward but the other can, and then move them up. For things like allowing the player to climb up ledges, that might be a good solution, but if all you want is for them to be able to climb stairs your solution is much simpler.
When he said stair judder, I thought he meant edge aliasing!
That's a really clever solution to allowing the player to go up stairs though. The way I would have done it would have to make the player out of two spheres and figure out when one sphere can't move forward but the other can, and then move them up. For things like allowing the player to climb up ledges, that might be a good solution, but if all you want is for them to be able to climb stairs your solution is much simpler.