Command in nested loops - wrong result

[pierremgi 4118]

Hi,

I'm in trouble with what I guessed a simple code but my double loop doesn't work.

 

Aim: make all foot units and land vehicles without collision. Don't crush any body.

To start, i did it simple: SP context.

Repeatable simple scenario: On map: a Hunter player, 1 or 2 empty Hunter. (or any vehicle you want). 3 civilians.

 

I run this simple code:

0 = [] spawn {
result = [];
      {
        _veh = _x;
          {
            _unit = _x;
            _veh disableCollisionWith _unit;
             result pushBack [_veh,_unit];
          } forEach (allUnits  select {isNull objectParent _x});
      } forEach (vehicles select {_x isKindOf "landVehicle" && !(_x isKindOf "WeaponHolderSimulated")});
hint  str result;
};

 

I obtain the hint for every couple (vehicle,civilian) but the weird thing is:

- only one vehicle is fully collision disabled with the whole civilians; (last loop checked I guess)

- the other vehicles are collision disabled with the last civilian (last checked probably), but not with the other ones.

 

I did a full day of tests, coming from MP environment, as it was supposed to loop for spawned units. then simplify everything up to this basic test.

 

Testing further, for variables:

 

0 = [] spawn {
  result1 = [];
  result2 = [];
  private ["_veh","_unit"]; // doesn't make any difference
     {
      _veh = _x;
        {
          _unit = _x;
          [_veh,_unit] spawn {
            params ["_car","_man"];
            _car disableCollisionWith _man;
             result1 pushBack [_car,_man];
           };
           result2 pushback [_veh,_unit];
        } forEach (allUnits  select {isNull objectParent _x});
      } forEach (vehicles select {_x isKindOf "landVehicle" && !(_x isKindOf "WeaponHolderSimulated")});
hint (str result1 + str result2);
};

 

Now, my results are:

- result1 = [];

- result2 is a consistent array of couple (vehicle,unit)!!!

 

Any idea? Thanks

 

 

 

 

 

[pierremgi 4118]

I kindly request your skill before adding something at BIKI:

 

So, first of all, here is a little test, simple nested loops, out of any object manipulation. All results are OK for simple variables:

In debug console:

 

0 = [] spawn {
  arr1 = ["a","b","c"];
  arr2 = ["x","y","z"];
  private ["_datumOut","_datumIn"];   
  result1 = [];
  result2 = [];
  result3 = [];

  {  
    _datumOut = _x;  
    {  
      _datumIn = _x;  
      result1 pushback [_datumIn,_datumOut];
      [_datumIn,_datumOut] call {
        _datumIn = _this select 0;
        _datumOut = _this select 1;
        result2 pushBack [_datumIn,_datumOut];
      };
      [_datumIn,_datumOut] spawn {
        _datumIn = _this select 0;
        _datumOut = _this select 1;
        result3 pushBack [_datumIn,_datumOut];
      };
    } forEach arr1;
  } forEach arr2;  
  sleep 0.001;
  hint (str result1 + toString [92,110] + str result2 + toString [92,110] + str result3);
};

 

Note: if no pause before hint, the spawned code (result3) returns []. The hint fires immediately and no spawned code has time to pushback something.

A very little pause makes hint OK. So result3 can't be usable before the pause  >> the end of the nested loops doesn't mean the spawned codes are done. Normal.

 

Then Re-tested with some command f(x,y) type,  like disableCollisionWith:

 

    replacing arr1 = allUnits;  arr2 = vehicles;

    for 1 player in a hunter, 2 empty Hunter more to jump into them,  3 civilian foot units; // very light mission!

    and adding nested code in loop at core scope ( but direct method or called or spawned):

            _datumIn disableCollisionWith _datumOut;

Spoiler

0 = [] spawn {
  arr1 = allUnits;
  arr2 = vehicles;
  result1 = [];
  result2 = [];
  result3 = [];
   
  {  
    _datumOut = _x;  
    {  
      _datumIn = _x;  
      result1 pushback [_datumIn,_datumOut];
      _datumIn disableCollisionWith _datumOut;
      [_datumIn,_datumOut] call {
        _datumIn = _this select 0;
        _datumOut = _this select 1;
        result2 pushBack [_datumIn,_datumOut];
      };
      [_datumIn,_datumOut] spawn {
        _datumIn = _this select 0;
        _datumOut = _this select 1;
        result3 pushBack [_datumIn,_datumOut];
      };
    } forEach arr1;
  } forEach arr2;  
  sleep 0.2;
  hint (str result1 + toString [92,110] + str result2 + toString [92,110] + str result3);
};

 

The behavior is always the same. For any method: direct, called, spawned code:

- The last Hunter in external loop is fine: no collision at all,

- all other vehicles (any number) fail with all the units but the last, in internal loop: (same last unit for all the vehicles). Just one disabled collision case by vehicle.

 

So, I guess this kind of command can't work at core of nested loops.

The failure/success for the couples of variables is predictable! (But not explainable for me).

Any idea to make that work?

Thanks