Perhaps this should be a somewhat obvious question, but I'm wondering if anyone has any advice regarding footsteps for game audio. Trying to come up with nice-sounding steps for a number of different surface types (stone, dirt, water, grass, wood, and leaves) and a number of foot types (shoes, barefoot, armoured, spider, hooves, rock creature, etc.)
What I'm wondering is: how many variations of each should I have? do I need to have different sounds for walk/run (besides volume and pacing, what's the difference b/w walking & running footsteps)...? What sorts of things should I be looking for when I'm sorting through my library for sounds (I don't have access to a foley room for this stuff)?
To be honest, I figured this should be fairly easy but once I've got the sounds in the game I'm finding I'm not quite satisfied with the sounds, and I've been redoing it over and over again trying to get the right footstep sounds.