Check if a player is stuck

[Bobblehead]

How do I check if a player is stuck in a wall, a prop, or another player?
Right now I've got two checks:

1st, are they :OnGround()? If you're stuck, you're not on the ground. The player's animation gives evidence of this.
2nd, if I launch them in a direction, do they move? If so, they aren't stuck. Repeat for x, y, and z.

Is there another method of doing this that would be simpler?

[Bobblehead]

[QUOTE=Handsome Matt;43476888]Do a trace from them in any direction with the player as a filter. Maybe..[/QUOTE]

Would a trace HULL starting and ending at the player's position work?

[editline]
example:
[/editline]

[lua]
local pos = ply:GetPos()
local tracedata = {}
tracedata.start = pos
tracedata.endpos = pos
tracedata.filter = ply
tracedata.mins = ply:OBBMins()
tracedata.maxs = ply:OBBMaxs()
local trace = util.TraceHull( tracedata )

if trace.Entity and (trace.Entity:IsWorld() or trace.Entity:IsValid()) then
--They're stuck.
end
[/lua]

[>>oubliet]

You might wanna look at [url=http://wiki.garrysmod.com/page/PhysObj/IsPenetrating]PhysObj.IsPenetrating[/url]

[editline]9th January 2014[/editline]

I'm not too sure if it works properly on ragdolls/players, I haven't checked