We define an array, TransitDurations, to represent the trolley transition times.

                              // M1   M2   M3   A     S
IloNum TransitDurations[] = {    0,  50,  60,  50,   90,    // M1
                                50,   0,  60,  90,   50,    // M2
                                60,  60,  0,   80,   80,    // M3  
                                50,  90,  80,   0,  120,    // A
                                90,  50,  80, 120,    0   };// S

A function, getMaxTransitDuration, is defined on this array. It returns the longest transit duration between two areas of the shop.

IloNum getMaxTransitDuration(IloInt nbArea, IloNum* transitDurations){
  IloNum max = 0;
  IloInt size = nbArea*nbArea;
  for (IloInt i = 0; i < size; i++)
    if (transitDurations[i] > max) max = transitDurations[i];
  return max;
}

Now, the transit duration array is added to the function DefineModel as an extra argument.

    IloEnv env;
    IloAnyArray jobs;
    IloStateResource trolley;
    IloArray<IloUnaryResource> machines;
    IloNumVar makespan;
    IloModel model = DefineModel(env,
        JobNames,
        TransitDurations,
        Machines1, Durations1,
        Machines2, Durations2,
        jobs,
        trolley,
        machines,
        makespan);

In the next section we show how the DefineModel function is modified to take transition times into account.