Buggy VTOL

//The problem with the code is that for some reason when the VTOL moves back, it does so way too fast not matter what I try.
//Now it doesn't even do it when it enters its' "BackOff" state, it does it when it enters the state where fire its' plasma gun!

Class StealthCraft : Actor
{
    Default
    {
        Health 5000;
        Radius 128;
        Height 100;
        Mass 7000;
        DamageFactor 0.9;
        Gravity 0.5;
        Friction 0.05;
        FloatBobStrength 0.5;
        Species "MarineAlly";
        Obituary "%o was killed by a VTOL";
        Monster;
        +NoGravity;
        +MissileEvenMore;
        +Float;
        +AvoidMelee;
        +Telestomp;
        +FloatBob;
        +NoBlood;
        +PuffOnActors;
    }
    Static Vector3 GetLocalVel(Actor a) //Function by Cherno, I know fuck all about math.
    {
        double relativeVelX = (sin(a.angle) * a.vel.y) + (cos(a.angle) * a.vel.x);
        double relativeVelY = ((cos(a.angle) * a.vel.y) - (sin(a.angle) * (a.vel.x))) * -1;
        return (relativeVelX,relativeVelY,a.vel.z);
    }
    static bool AreTherePlayersAround(double dist, actor source) //Function by Agent_Ash, this code is so alien to me that I don't even know how to fix the formatting without breaking it.
    {
      for (int pn = 0; pn < MAXPLAYERS; pn++)
      {
        if (!players[pn].mo || !playerInGame[pn])
          continue;
        PlayerPawn plr = players[pn].mo;
        if (!plr)
          continue;
        if (source.Distance3D(plr) <= dist)
        {
          return true;
          break;
        }
      }
      return false;
    }
    Vector3 ForwardVel; //Used to store the crafts' forward velocity, to make it visual lean forward or back if this vector is too low or high.
    Int MayBackAway; //A variable used to determine the chance of the craft to move away from its' target.
    Int MayThrustUp; //A variable used to determine the chance of the craft to go up.
    Int MayThrustDown; //A variable used to determine the chance of the craft to go down.
    Int RandomSwerve; //A variable used to give the VTOL a random delay before swerving when attacking instead of standing still.
    Int VerticalMovementCooldown; //A variable used as a cooldown so the craft doesn't move up the immediately go down or vice versa.
    Int MissileFiringChance; //This variable determines if the VTOL should launch its' missiles instead of firing its' plasma gun, it is used for the DecideAttack state.
    enum AircraftSoundChannels
    {
        CHAN_ENGINE = 18273
    }
    Override Void PostBeginPlay()
    {
        Super.PostBeginPlay();
        RandomSwerve = RandomPick (35*1,35*2,35*3,35*4,35*5); //Initializes the first random delay before the VTOL swerves.
    }
    Override Void Tick()
    {
        Super.Tick();
        //If it's moving forward too fast, then produce a counterforce to slow it down.
        If (Self.ForwardVel.x >= 24) {A_ChangeVelocity (-1,flags:CVF_RELATIVE); a_log ("IS THIS FUCKING LINE THE ISSUE ? JUST TELL ME WHAT IT FUCKING IS");}
        //If moving up too fast up, then slow down.
        If (Self.Vel.z >= 12) {A_ChangeVelocity (z:-1,flags:CVF_RELATIVE);}
        If (Target)
        {
            If (CheckIfTargetInLOS (140,JLOSF_CLOSENOJUMP,dist_close:512) && InStateSequence (CurState, ResolveState ("See")))
            {Return;}
            Else //If the target isn't in the LOS while chased, slow down to not fly away uncontrollably and face it faster.
            {
                MayBackAway = Random (0,256);
                A_FaceTarget (16);
                A_ChangeVelocity (-3,flags:CVF_RELATIVE);
                //A random chance for the craft to enter its' back off state where it backs away.
                If (MayBackAway == 27 && InStateSequence (CurState, ResolveState ("See"))) {SetStateLabel ("BackOff");}
            }
        }
        //If the VTOL is attacking with its' plasma gun, then have a random chance of moving left or right not avoid being hit.
        If (InStateSequence (CurState,ResolveState ("FirePlasma")))
        {
            A_ChangeVelocity (0,flags:CVF_REPLACE);
            RandomSwerve--;
            If (RandomSwerve <= 0)
            {
                A_LOG ("STOP FLYING BACK YOU STUPID PIECE OF SHIT");
                A_ChangeVelocity (y:RandomPick (-32,32),flags:CVF_RELATIVE);
                RandomSwerve = RandomPick (35*1,35*2,35*3,35*4,35*5); //Pick another delay before thje next swerve.
            }
        }
    }
    Private Void A_LeanTowardsMovementDirection()
    {
        ForwardVel = StealthCraft.GetLocalVel (Self);
        //If it's moving forward too fast, change the sprite sheet to the forwards leaning one.
        If (ForwardVel.x >= 16) {Sprite = GetSpriteIndex ("FLFM");}
        //If it's moving backwards too fast, change the sprite sheet to the backwards leaning one.
        If (ForwardVel.x <= -16) {Sprite = GetSpriteIndex ("FLBM"); a_log ("leaning back");}
        //If its' speed is in between both of the above, change the sheet back to the idle flying one.
        If (ForwardVel.x <= 16 && ForwardVel.x >= 16) {Sprite = GetSpriteIndex ("FLSA");}
    }
    States
    {
        Spawn:
            TNT1 A 0 NoDelay A_StartSound ("StealthCraft/EngineOn",CHAN_ENGINE,CHANF_LOOPING,attenuation:0.75);
            Goto IdleFly;
        IdleFly:
            FLSA AB 8 A_LookEx (maxheardist:3072);
            Loop;
        See:
            FLSA AB 8
            {
                //If the VTOL is stuck on the ground, then leap up.
                If (pos.z - FloorZ <= 0) {a_log ("way too low");A_ChangeVelocity (z:4,flags:CVF_RELATIVE);}
                A_Chase(null,"DecideAttack");
                A_ChangeVelocity (2,flags:CVF_RELATIVE);
                A_LeanTowardsMovementDirection();
                A_FaceTarget (4);
                VerticalMovementCooldown--; //Decrements the cooldown every time the functions here are executed.
                MayThrustUp = Random (0,128);
                MayThrustDown = Random (0,128);
                //A random chance for the VTOL to thrust down, must also be at least 48 or more MU above the ground for it to thrust down.
                If (MayThrustDown >= 126 && VerticalMovementCooldown <= 0 && pos.z - GetZAt () >= 48)
                {
                    A_ChangeVelocity (z:FRandom (-4.0,-12.0),CVF_RELATIVE);
                    a_log ("going down");
                    MayThrustUp = 0; //Reset the variable to 0 so if it does decide to fly down, it won't immediately fly back up.
                    VerticalMovementCooldown = 12;
                }
                //May randomly decide to fly upwards, to not just stick on the same height.
                If (MayThrustUp >= 127 && VerticalMovementCooldown <= 0)
                {
                    a_log ("going up");
                    A_ChangeVelocity (z:FRandom (4.0,10.0),CVF_RELATIVE);
                    VerticalMovementCooldown = 12;
                }
            }
            Goto See+1;
        BackOff:
            FLBM ABABAB 8
            {
                vel.x = vel.x * cos(angle) + vel.y * sin(angle) -0.2;
                console.printf ("the velocity is %d", vel);
                A_FaceTarget (24);
            }
            Goto See;
        DecideAttack:
            TNT1 A 0 {If (Target == Null) {SetStateLabel ("See");}} //If there's no target, go back to looking for one.
            TNT1 A 0
            {
                MissileFiringChance = Random (0,384); //Randomize the chance of firing missiles.
                Console.PrintF ("The initial RNG for MissileFiringChance is %d", MissileFiringChance);


                //In short, this checks the actors around the VTOL's target, and increases its' chance of
                //firing a missile slightly for every nearby actor that meets the following conditions:
                //The actor is a monster.
                //The actor has 20 HP or more.
                //The actor is hostile. (If the VTOL is friendly it'll count non-friendly NPCs, if it is NOT friendly, it'll count friendly NPCs.)
                BlockThingsIterator CheckAroundTarget = BlockThingsIterator.Create (Target,512);
                Actor FoundActor;
                While (CheckAroundTarget.Next())
                {
                    FoundActor = CheckAroundTarget.Thing;
                    If (FoundActor && bIsMonster == True && FoundActor.Health >= 20 && IsHostile (FoundActor))
                    {
                        MissileFiringChance += Random (1,3);
                    }
                }
                Console.PrintF ("MissileFiringChance after the first calculation of the amount of enemies around the target is %d", MissileFiringChance);

                //In theory at least, this should further increase the chance of the VTOL firing a missile based on how high the targets' own health is.
                MissileFiringChance += Target.Health/5;
                Console.PrintF ("The RNG for MissileFiringChance after also being calculated based on the actors' health is %d", MissileFiringChance);

                If (self.bFriendly == True && AreTherePlayersAround (512,target) == True) {a_log ("player is too close to the missiles' blast radius");SetStateLabel ("FirePlasma");} //If there's a player near the target and the VTOL is friendly, then fire the plasma gun instead.

                If (MissileFiringChance >= 370) {SetStateLabel ("FireMissiles");}
            }
            TNT1 A 0;
            Goto FirePlasmaGun; //If the above checks' conditions are not met, fire the plasma gun instead.
        FirePlasmaGun:
        tnt1 a 0 a_log ("you dun goofed");
            //FLSA A 0 A_Jump (2,"FireMissiles"); //A small chance for the VTOL to fire its' missiles anyway, even if the check on DecideAttack decided to not do so.
            FLSA A 8 A_StartSound ("StealthCraft/PlasmaCharge",CHAN_WEAPON,attenuation:/*0.8*/0,starttime:0.474);
            FLSA BABABABABABABABABABAB 8; //This is perfectly timed so the VTOL begins firing right when the charging sound ends.
            FLFP ABABABABABABABABABABABABABABABABABABABAB 8
            {
                A_SpawnProjectile ("StealthCraftPlasma",4,angle:FRandom (0.5,-0.5),CMF_TRACKOWNER|CMF_OFFSETPITCH,FRandom (0.5,-0.5));
                A_SpawnProjectile ("StealthCraftPlasma",4,angle:FRandom (0.5,-0.5),CMF_TRACKOWNER|CMF_OFFSETPITCH,FRandom (0.5,-0.5));
            }
            Goto See;
        FireMissiles:
            tnt1 a 0 a_log ("missile placeholder");
            stop;
    }
}

Class StealthCraftPlasma : Actor
{
    Default
    {
        Height 12;
        Radius 6;
        DamageFunction RandomPick (8,12); //Either 8 or 12 damage is dealt.
        Speed 32;
        FastSpeed 64;
        Alpha 0.80;
        Decal "PlasmaScorch";
        Translation "194:207=193:200", "241:241=194:194";
        Obituary "%o was pulverized by a VTOL's plasma !";
        DamageType "Plasma";
        RenderStyle "Add";
        DeathSound "Weapons/PlasmaX";
        Projectile;
        +Randomize;
    }
    Override Void PostBeginPlay()
    {
        Super.PostBeginPlay();
        A_StartSound ("StealthCraft/PlasmaFired");
        A_AttachLight ("PlasmaLight",DynamicLight.PulseLight,"6B63FF",32,36,DynamicLight.LF_Attenuate,param:0.25);
    }
    States
    {
        Spawn:
            PLSS AB 4 Bright;
            Loop;
        Death: //Implement several lights that get increasingly smaller on these death frames.
            TNT1 A 0 A_RemoveLight ("PlasmaLight");
            PLSE ABCDE 6 Bright;
            Stop;
    }
}

Class StealthCraftMissile : Actor
{
    Default
    {
        Height 24;
        Radius 16;
        Damage 120;
        Speed 64;
        FastSpeed 128;
        Mass 50;
        SeeSound "StealthCraft/MissileFired";
        Obituary "%o was blown up by a VTOL's missile";
        Translation "96:111=#[0,255,128]", "89:95=#[0,255,128]";
        Projectile;
        +RocketTrail;
        +SeekerMissile;
        +ScreenSeeker;
        +ExtremeDeath;
        +SpawnSoundSource;
    }
    Double TrailXVel;
    Double TrailYVel;
    Double TrailZVel;
    Double RandMult; //Random multiplier
    Override Void Tick()
    {
        Super.Tick();
        //Don't spawn particles and play the missile sound if the game is frozen or the missile is exploding.
        If (IsFrozen() || InStateSequence (CurState,ResolveState ("Death")) || InStateSequence (CurState,ResolveState ("Death.Air"))) {A_StopSound (17263); Return;}

        TrailXVel = FRandom (0.0,-4.0); TrailYVel = FRandom (4.0,-4.0); TrailZVel = FRandom (4.0,-4.0); //Random velocity for all 3 axes.
        A_SpawnItemEx ("StealthCraftMissileParticle",64,xvel:TrailXVel,TrailYVel,TrailZVel,Self.Angle-180+Random (8,-8),SXF_SETMASTER|SXF_ABSOLUTEANGLE|SXF_ORIGINATOR);

        TrailXVel = FRandom (0.0,-4.0); TrailYVel = FRandom (4.0,-4.0); TrailZVel = FRandom (4.0,-4.0);
        RandMult = FRandom (2.0,8.0);
        A_SpawnItemEx ("StealthCraftMissileParticle",64+24,xvel:TrailXVel*RandMult,TrailYVel*RandMult,TrailZVel,Self.Angle-180+Random (8,-8),SXF_SETMASTER|SXF_ABSOLUTEANGLE|SXF_ORIGINATOR);
    }
    States
    {
        Spawn:
            TNT1 A 0 NoDelay A_StartSound ("StealthCraft/MissileMoving",17263,CHANF_LOOPING,attenuation:0.75);
            FLMI A 4 Bright Light ("StealthCraftMissileLight") A_SeekerMissile (0,2,SMF_PRECISE);
            Goto Spawn+1;
        Death:
            TNT1 A 0
            {
                A_StopSound (17263);
                If ((pos.z - FloorZ) >= 128) //If the missile impacted away from the floor, use the air explosion sprites instead.
                {
                    SetStateLabel ("Death.Air");
                }
            }
            tnt1 a 0 a_log ("died near the floor");
            MISL B 4 A_Explode (Random(500,600),512,alert:True,100);
            MISC C 4;
            MISL D 4;
            Stop;
        Death.Air:
            tnt1 a 0 a_log ("died far from the floor");
            MISL B 4 A_Explode (Random(500,600),512,alert:True,100);
            MISL C 4;
            MISL D 4;
            Stop;
    }
}



Class StealthCraftMissileParticle : Actor
{
    Default
    {
        RenderStyle "Add";
        Alpha 0.75;
        +NoInteraction;
    }
    States
    {
        Spawn:
            FLMS ABCDEFGHIJKL 1 Bright;
            Stop;
    }
}

Class StealthCraftSprites : Actor
{
    States
    {
        Spawn:
            FLFM AB 0; //VTOL is leaning forward
            FLBM AB 0; //VTOL is leaning backwards
            Stop;
    }
}