Someone knows a good way to detect edges of blocks? For climbing, I mean, the character's falling/jumping near an edge and he grabs it. I could imagine to do it with many c_traces, but that's not good for the performance...

use two c_traces, and somewhere i saw in forum about that, try search

That's what is in my mind, too.

The centered trace and a trace in front of the model. Both straight down.

Thanks, I've worked out a solution now. At least I think so, I couldn't try it yet.