Garry's Mod ACF Turret HUD Combo V2

@name Turret HUD Combo V2
@inputs  Active NextWeapon PrevWeapon [Pod Cam EGP ]:wirelink [Gun Base Chair]:entity
@persist Elevation Depression Yaw RotateSpeed FOV
@persist Rangefinder:ranger [ScreenRes Res]:vector2 CamOffset:vector
@persist [Inertia Hold]:angle CamL:entity User:entity

# EGP, Cam, and Pod Controller required

    #The way Zoom is setup you have a max FOV (zoomed out), a minimum FOV (zoomed in)
    #and a change amount per scroll. The default for these are Max - 90, Min - 20, Change - 35.
    #Minimum and maximum is recommended to be between 0 and 90, minimum being zoomed in and max being zoomed out.

    #You want to all mesh together, in the default example the max is 90 and one scroll click will
    #subract 35 making the FOV 55, then another click will subract 35 again bringing us to the
    #minimum of 20. If it was 90 / 20 / 10 you would reach the minimum FOV in 9 clicks.
    #Whatever the case, your Max minus Change a certain number of times should land you on your Minimum.

    #Do not forget to change the fov reset value on line 26 as well.

    #FOV Control                  These values below are what you change
if (~PrevWeapon|~NextWeapon) {
    FOV = clamp(FOV + (NextWeapon - PrevWeapon) * 35,20,90)
}                                            #Change,Min,Max
    #FOV reset when entering / exiting
if (~Active&Active|~Active&!Active) {
    FOV=90
}   #   ^^This should be same as Max

#############################################################################################################################

    #Do not touch this

if(first()||dupefinished())
{
    holoCreate(1)
    holoAlpha(1,0)
}

elseif ( ~Active & Active ) {

#############################################################################################################################

    #Stuff you can adjust

    #Hud Stuff

    #HUD Color    (Red,Green,Blue)
    local Color = vec(25,100,225)
    #Aimer Color  (Red,Green,Blue)
    local Color2 = vec(0,0,200)

    #Gun Stuff

    #Elevation (How high the gun aims in degrees)
    Elevation = 10
    #Depression (How low the gun aims in degrees)
    Depression = 7.5
    #How far around the gun can left and right in degrees (180 is all the way around, 90 is flush to each side)
    Yaw = 180
    #How fast the gun turns, this is an arbitrary number and must be adjusted to your liking, Higher is faster
    RotateSpeed = 15

    #Camera Stuff

    #How far out the camera is from the pivot point
    Cam["Distance",number]  = 200 #Forwards/Backwards|Left/Right|Up/Down forwards may be a negative number, experiment and see
    #Offset of camera from base center |F/B|L/R|U/D|
    CamOffset               =       vec(19.5, 0 ,100)

    #Turret Sound     Just replace the sound path with whatever sound you like
    Gun:soundPlay(1,0,"vehicles/tank_turret_loop1.wav")
    soundPitch(1,0)

#############################################################################################################################

    #Stuff you probably should not touch below

    #Camera Activation
    Cam["Activated",number] = 1
    #Entity the camera originates from
    Cam["Position",vector]  = Base:toWorld(CamOffset)
    #Entity the camera parents to
    Cam["Parent",entity]    = Base

    #EGP Stuff
    User = Chair:driver()
    ScreenRes=egpScrSize(Chair:driver())
    Res=ScreenRes/2

    #Forward Gun Tracker
    EGP:egp3DTracker(2,vec(0,0,0))
    EGP:egpParent(2,holoEntity(1))

    EGP:egpCircle(3,vec2(0,0),vec2(4,4))
    EGP:egpColor(3,Color2)
    EGP:egpParent(3,2)

    #Chevron
    EGP:egpPoly(4, Res, Res + vec2(24,17), Res + vec2(20,17), Res + vec2(0,4), Res + vec2(-20, 17), Res + vec2(-24, 17))
    EGP:egpColor(4,Color)

    #Marks below Chevron
    EGP:egpCircle(5,Res+vec2(0,30),vec2(5,1))
    EGP:egpColor(5,Color)

    EGP:egpCircle(6,Res+vec2(0,50),vec2(5,1))
    EGP:egpColor(6,Color)

    EGP:egpCircle(7,Res+vec2(0,70),vec2(5,1))
    EGP:egpColor(7,Color)

    rangerFilter(Gun)
    rangerFilter(entity():getConstraints())
    rangerPersist(1)

    #Gun Stuff
    Elevation*=-1
    Inertia = shiftL(ang(Gun:inertia()))
    Hold = entity():toLocal(Gun:angles())

    interval( 35 )
    timer("tracker",100)
    stoptimer("stop-gun-spinning")
} elseif ( ~Active & !Active ) {
    stoptimer("interval")
    stoptimer("tracker")
    soundPitch(1,0)
    timer("stop-gun-spinning",100)
}   elseif (clk("tracker")) {

    #EGP Stuff
    holoPos(1,rangerOffset(9999999999,Gun:pos()+Gun:forward()*100,Gun:forward()):position())

    timer("tracker",100)
} elseif( clk() ) {

    #Sound Stuff
    local Position = Base:toWorld(CamOffset)
    local Angle = Chair:toLocal(User:eyeAngles())
    local Ranger = rangerOffset(9999999999,Position,Angle:forward())
    soundPitch(1,clamp(Gun:angVelVector():length()*10*(Gun:angVelVector():length()>10),0,80))

    #Ang Force Stuff
    local GunAng = (Ranger:pos() - Gun:pos()):toAngle()
    local Force = Gun:toWorld(clamp(Gun:toLocal(GunAng),ang(-RotateSpeed),ang(RotateSpeed)))
    local Clamped = clamp(entity():toLocal(Force),ang(Elevation,-Yaw,-1),ang(Depression,Yaw,1))
    local LocalToGun = Gun:toLocal(entity():toWorld(Clamped))
    Gun:applyAngForce((LocalToGun * 250 - Gun:angVel() * 47) * Inertia) #250, 47

    interval( 35 )
} elseif (clk("stop-gun-spinning")) {
    Gun:applyAngForce(-Gun:angVel() * 30 * Inertia)

    if (Gun:angVelVector():length() > 0.1) {
        timer("stop-gun-spinning",100)
    }
}
    #Camera field of view link
    Cam["FOV",number]       = FOV