Door HL2RP!?

You should put a script on your server.

function KeyPressedUse (ply, key)
if key == IN_USE then
local t = {}
t.start = ply:GetPos()
t.endpos = ply:GetShootPos() + ply:GetAimVector() * 100
t.filter = ply
local trace = util.TraceLine(t)
if trace.Entity and trace.Entity:IsValid() and (trace.Entity:GetClass() == "func_door" or trace.Entity:GetClass() == "prop_door_rotating" or trace.Entity:GetClass() == "prop_dynamic") then
trace.Entity:Fire("Open")
end
end
end
hook.Add( "KeyPress", "KeyPressedUse", KeyPressedUse )


This one should work