Grappling Hook Help!

[xXGhostieXx]

Ok so on my server i need help with grappling hook. The lua file they gave me doesnt work. The lua is.

SWEP.Author = "Hxrmn, HOLOGRAPHICpizza"
SWEP.Contact = "[e-mail]"
SWEP.Purpose = "A Grappling Hook"
SWEP.Instructions = "Left click to fire"

SWEP.Spawnable = true
SWEP.AdminSpawnable = true

SWEP.PrintName = "Grappling Hook"
SWEP.Slot = 2
SWEP.SlotPos = 0
SWEP.DrawAmmo = false
SWEP.DrawCrosshair = true
SWEP.ViewModel = "models/weapons/v_crossbow.mdl"
SWEP.WorldModel = "models/weapons/w_crossbow.mdl"
SWEP.CanBuy = {ROLE_TRAITOR} -- only traitors can buy

local sndPowerUp = Sound("weapons/crossbow/hit1.wav")

local sndPowerDown = Sound("Airboat.FireGunRevDown")
local sndTooFar = Sound("buttons/button10.wav")

function SWEP:Initialize()

nextshottime = CurTime()
self:SetWeaponHoldType( "smg" )
self.zoomed = false

end

function SWEP:Think()

if (!self.Owner || self.Owner == NULL) then return end

if ( self.Owner:KeyPressed( IN_ATTACK ) ) then

self:StartAttack()

elseif ( self.Owner:KeyDown( IN_ATTACK ) && inRange ) then

self:UpdateAttack()

elseif ( self.Owner:KeyReleased( IN_ATTACK ) && inRange ) then

self:EndAttack( true )

end

--Changed from KeyDown to prevent random stuck-in-zoom bug.
if ( self.Owner:KeyPressed( IN_ATTACK2 ) ) then

self:Attack2()

end

end

function SWEP:DoTrace( endpos )
local trace = {}
trace.start = self.Owner:GetShootPos()
trace.endpos = trace.start + (self.Owner:GetAimVector() * 14096) --14096 is length modifier.
if(endpos) then trace.endpos = (endpos - self.Tr.HitNormal * 7) end
trace.filter = { self.Owner, self.Weapon }

self.Tr = nil
self.Tr = util.TraceLine( trace )
end

function SWEP:StartAttack()
-- Get begining and end poins of trace.
local gunPos = self.Owner:GetShootPos() -- Start of distance trace.
local disTrace = self.Owner:GetEyeTrace() -- Store all results of a trace in disTrace.
local hitPos = disTrace.HitPos -- Stores Hit Position of disTrace.

-- Calculate Distance
-- Thanks to rgovostes for this code.
local x = (gunPos.x - hitPos.x)^2;
local y = (gunPos.y - hitPos.y)^2;
local z = (gunPos.z - hitPos.z)^2;
local distance = math.sqrt(x + y + z);

-- Only latches if distance is less than distance CVAR, or CVAR negative
local distanceCvar = GetConVarNumber("grapple_distance")
inRange = false
if distanceCvar < 0 or distance <= distanceCvar then
inRange = true
end

if inRange then
if (SERVER) then

if (!self.Beam) then -- If the beam does not exist, draw the beam.
-- grapple_beam
self.Beam = ents.Create( "trace1" )
self.Beam:SetPos( self.Owner:GetShootPos() )
self.Beam:Spawn()
end

self.Beam:SetParent( self.Owner )
self.Beam:SetOwner( self.Owner )

end

self:DoTrace()
self.speed = 10000 -- Rope latch speed. Was 3000.
self.startTime = CurTime()
self.endTime = CurTime() + self.speed
self.dt = -1

if (SERVER && self.Beam) then
self.Beam:GetTable():SetEndPos( self.Tr.HitPos )
end

self:UpdateAttack()

self.Weapon:EmitSound( sndPowerDown )
else
-- Play a sound
self.Weapon:EmitSound( sndTooFar )
end
end

function SWEP:UpdateAttack()

self.Owner:LagCompensation( true )

if (!endpos) then endpos = self.Tr.HitPos end

if (SERVER && self.Beam) then
self.Beam:GetTable():SetEndPos( endpos )
end

lastpos = endpos

if ( self.Tr.Entity:IsValid() ) then

endpos = self.Tr.Entity:GetPos()
if ( SERVER ) then
self.Beam:GetTable():SetEndPos( endpos )
end

end

local vVel = (endpos - self.Owner:GetPos())
local Distance = endpos:Distance(self.Owner:GetPos())

local et = (self.startTime + (Distance/self.speed))
if(self.dt != 0) then
self.dt = (et - CurTime()) / (et - self.startTime)
end
if(self.dt < 0) then
self.Weapon:EmitSound( sndPowerUp )
self.dt = 0
end

if(self.dt == 0) then
zVel = self.Owner:GetVelocity().z
vVel = vVel:GetNormalized()*(math.Clamp(Distance,0,7))
if( SERVER ) then
local gravity = GetConVarNumber("sv_Gravity")
vVel:Add(Vector(0,0,(gravity/100)*1.5)) -- Player speed. DO NOT MESS WITH THIS VALUE!
if(zVel < 0) then
vVel:Sub(Vector(0,0,zVel/100))
end
self.Owner:SetVelocity(vVel)
end
end

endpos = nil

self.Owner:LagCompensation( false )

end

function SWEP:EndAttack( shutdownsound )

if ( shutdownsound ) then
self.Weapon:EmitSound( sndPowerDown )
end

if ( CLIENT ) then return end
if ( !self.Beam ) then return end

self.Beam:Remove()
self.Beam = nil

end

function SWEP:Attack2() -- Zoom.
if self.zoomed then
self.zoomed = false
if SERVER then
self.Owner:SetFOV(0, 0.1)
end
else
self.zoomed = true
if SERVER then
self.Owner:SetFOV(30, 0.1)
end
end
end

function SWEP:Holster()
self:EndAttack( false )
return true
end

function SWEP:OnRemove()
self:EndAttack( false )
return true
end

function SWEP:PrimaryAttack()
end

function SWEP:SecondaryAttack()
end

its a TTT server and when i try to spawn it in...it doesnt even let me pick it up. PLEASE HELP version 3.4 *FIXED* by: Hxrmn, HOLOGRAPHICpizza

[DevulTj]

I suggest putting this in [lua] tags next time. ^-^