I'm trying to make a moving platform, and just for convenience sake I'm trying to parent a playerclip brush to it. Is it possible?
Yes, clip brushes can be made into, and parented to, moving entities. Technically you don't need to parent it, you can just make the clip brush a part of the moving entity itself (assuming it is a brush entity).
Thanks for the help. Another quick question: Can you parent a ambient generic or any audible sound to a moving object? Also, while I'm at it, can you put overlays on moving objects?
If an object has the field "Parent", you can parent it to just about anything. As far as I know, you cannot put overlays or decals on moving objects, though I (very likely) may be wrong.
Decals *can* be placed on moving objects, although its extremely rudimentary (haven't tested the full extent of it) Also don't rely on the "Parent" field to determine if it can be parented or not. The Valve FGDs especially suffer this, with a lot of entities missing Parent fields, even though they can be parented fine. You can either add the "parentname" keyvalue manually with smartedit off, or use my FGD which patches this issue and allows everything to be parented easily