Help with Gamemode Camera

[zaza]

I was trying to make a camera for a gamemode, but the mouse position is not aligned with where it should be in the map. Does anyone know how to solve this? Thanks.

here is the code

 -----------------------VARS AND INIT STUUFF
local X =  0
local Y =  0
local Z =  0
local ZOOM = 100
-----------------------VARS AND INIT STUUFF

--------------------------------------CAMERA DAHORA DO AGE
function CalcView2( ply, origin, angles, fov )
    
    local tracedata = {}
    tracedata.start = Vector(X,Y,(8*ZOOM)+100)
    tracedata.endpos = Vector(X,Y,(8*ZOOM)+100) - Vector(0,0,10000)
    tracedata.mask = NPCWORLDSTATIC
    Camera_trace = util.TraceLine(tracedata)

    view = {}
    gui.EnableScreenClicker(true)
    local x_mouse, y_mouse = gui.MousePos()
    
    //zoom
    if (input.IsKeyDown( 50 ) and ZOOM > 0) then
       ZOOM = ZOOM - 1
    elseif(input.IsKeyDown( 49 ) and ZOOM < 100) then
       ZOOM = ZOOM + 1
    end
    //zoom
    
    local borda = 4
    sens_convar = CreateClientConVar("agemod_sensbility", "2", true, false)
    local sensibilidade = ((ZOOM/100)*sens_convar:GetInt()/2) + (sens_convar:GetInt()/2)
    
    //mouse pos
    if (x_mouse < borda) then X = X - sensibilidade end
    if (x_mouse > (ScrW()-borda)) then X = X + sensibilidade end
    if (y_mouse < borda)  then Y = Y + sensibilidade end
    if (y_mouse > (ScrH()-borda)) then Y = Y - sensibilidade end
    //mouse pos
    
    Z = ((8*ZOOM)+100 + Camera_trace.HitPos.z)
    view.origin = Vector(X,Y,Z)
    view.angles = Angle((0.3*ZOOM)+30,90,0)
    --view.angles = Angle(90,90,0)
    view.fov = fov*0.8
    
    return GAMEMODE:CalcView(ply,view.origin,view.angles,view.fov)
end
hook.Add("CalcView", "CalcView2", CalcView2)
--------------------------------------CAMERA DAHORA DO AGE

-----------------------------CODIGO DE DETECÇAO DO MOUSE VECTOR
function mouse_glow()
w_mousetrace = util.QuickTrace( Vector(X,Y,Z), (gui.ScreenToVector( gui.MousePos() )*10000) )

cam.Start3D(view.origin,view.angles)
     render.SetMaterial( Material("sprites/blueglow2") ) --"luz maneira
     render.DrawQuadEasy( w_mousetrace.HitPos,    --position of the rect
     w_mousetrace.HitNormal,        --direction to face in
     128, 128,    --size of the rect
     Color( 255,255,255,255 )  --color
     )
cam.End3D()
end
hook.Add( "HUDPaint", "mouse_glow", mouse_glow )
-----------------------------CODIGO DE DETECÇAO DO MOUSE VECTOR 

and the video

[URL]http://www.youtube.com/watch?v=-mBPIBCy0M4[/URL]

sorry for my english... i'm brazilian =P

EDIT: Sorry, I forgot a part of the code

[NullPoint]

What are X, Y and Z?