[SOLVED] Adding custom footstep sound
Is it possible to add footstep sounds to specific surfaces? For instance, if a glass floor doesn't produce footstep sounds, can I add them on my own?
Footstep sounds are controlled by the $surfaceprop parameter in the VMT (among other things). I don't think you can easily add your own new types of surfaceprop, but you can just duplicate the original VMT, add a $surfaceprop option, and use that instead. "$surfacepop glass" will make glass sounds.
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it actually is easy to make your own surfaceprop, the hard part might be packing it into the map.
Aperture Science: We do our science asbestos we can!
Hmm, the extra packing isn't my strong side. I'd like to make it as easy as possible. Can't I produce my own foot step sounds on, let's say, a player clip?
Man, that is a tool texture, forget about that... the game handles this kind of textures differently as it does with the rest.
OK, I might know what you are up to: you have a glass floor, you are annoyed with the player sliding along this surface, and you placed a playerclip brush to avoid it; of course you lost your footsteps sound.. Am I close? 
Just saying because I faced that problem myself some time ago 
Whether if I'm right or wrong, the thing is that you could always make a custom texture fully transparent and adding the "$surfaceprop glass" (or whatever other surface type) parameter above described. This way you could potentially change any default sound a given surface emits as the player walks on.
useful tools and stuff here on TWP 
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I believe this is exactly what the "nodraw_glass_footsteps" tool texture is intended for, in fact.
LOL, never used it so I didn't know what the usage of this texure was! Thanks for saying! 
useful tools and stuff here on TWP [spoiler]
[/spoiler]I believe this is exactly what the "nodraw_glass_footsteps" tool texture is intended for, in fact.
Interesting, didn't even bother to look there but thank you! Now my second problem is to create metal-ish sound for a grate floor. Some official Portal 2 maps have grate floor but sadly not every has the proper sound. Miss by the developer's?
I didn't find any other footstep texture than the one you refered to (glass).
My suggestion is to grab any metal floor texture and lay down a brush of it where you need to and tie it to a func_brush. Then set the rendermode to "don't render" and the render amount to "0", and texture any sides of the brush that don't need to be walked on with nodraw
I haven't tested it but I think it should work
Aperture Science: We do our science asbestos we can!
I haven't tested it but I think it should work
I did just that, except the render amount set to 0 (which I didn't find). Sorry but it didn't work. I like the idea. Perhaps "don't render" means it won't render any sounds aswell.