It can be fixed by deleting the original projectile and spawning a copy of it. It's also necessary to make sure the script doesn't get called when you're using a different weapon.
In TVS\scripts\init.sqf file, you'll find the line.
_unit addEventHandler ["FIRED", {if ((player == gunner (_this select 0)) or ((player == driver (_this select 0)) and not (isPlayer gunner (_this select 0)))) then {_this spawn Nux_fnc_tvs_start;};}];
Replace it with:
_unit addEventHandler ["FIRED", { if (_this select 4 == (_this select 0 getVariable "Nux_tvs_ammo")) then {if ((player == gunner (_this select 0)) or ((player == driver (_this select 0)) and not (isPlayer gunner (_this select 0)))) then {_this spawn Nux_fnc_tvs_start;};}}];
Now TVS won't interfere with using the vehicle's other weapons.
Let's move on to copying the projectile. In TVS\scripts\tvg.sqf file you'll have this piece of code.
Nux_fnc_tvs_start = {
private ["_unit", "_weapon", "_missile", "_validammo"];
_unit = vehicle (_this select 0);
_weapon = _this select 1;
_missile = _this select 6;
_validammo = _unit getvariable "Nux_tvs_ammo";
Replace it with
Nux_fnc_tvs_start = {
private ["_unit", "_weapon", "_missile", "_validammo"];
sleep 0.5;
_unit = vehicle (_this select 0);
_weapon = _this select 1;
_missile = _this select 6;
_validammo = _unit getvariable "Nux_tvs_ammo";
private _vectordir = vectorDir _missile;
private _vectorup = vectorup _missile;
private _pitchBank = _missile call BIS_fnc_getPitchBank;
private _speed = velocityModelSpace _missile;
private _pos = position _missile;
deletevehicle _missile;
_missile = _validammo createVehicle _pos;
_missile setVectorDirAndUp [_vectorDir, _vectorUp];
[_missile, _pitchbank select 0, 0] call BIS_fnc_setPitchBank;
_missile setVelocityModelSpace _speed;
The missile/bomb will now be copied and the copy will be guidable. The script should function with no other changes. Tested with the current version of Arma 3 on planes and static AT turrets.
