Prevent player from taking over crew positions?

[kocrachon 2]

Something I figured would be easy but I can't seem to figure out...

 

I have some AI controlled APCs that transport my players around, but players are able to steal the the crew positions. How do I make it so my players can move in and out of the APC, but not take a crew position that is filled with an AI already?

 

Tried searching this but get so many unrelated results. 

[engima 327]

You can use a locked vehicle, and add a custom action (car addAction) to have player enter. A player cannot enter a locked vehicle, but they can be in one.

player moveInCargo car;

You can also script exit (doGetOut player), so you don't need another action to get out.

[Larrow 2797]

You can try locking all the turrets which should leave the cargo positions available..

//Lock all turrets that have someone in them
{
    if !( isNull (this turretUnit _x) ) then {
        this lockTurret [_x,true]
    };
}forEach allTurrets this;
//Lock drivers position
this lockDriver true;

[Alex150201 894]

I think the most efficient way to do it is Larrow's way.