hello everyone, I'm trying to create an agent based script which will contain 2 groups of agents with different behavior...for that I've created 2 array lists for each group, and a class for each one (in this way I'm able to control separately the behavior for each)...as a next step I wana make this 2 groups to interact when they meet...any ideeas how to make that possible?...who to concatenate these 2 array lists? or there is a more efficient way ?

here is my script




  //initialize
  ballCollection = new ArrayList();
  ballCollection_1 = new ArrayList();
  ballCollection_2 = new ArrayList();
  ballCollection = concat(ballCollection,ballCollection_1);

  for ( int i = 0; i < agentsN; i++) {
    Vec3D origin = new Vec3D(random(vx), random(vy), start);
    Ball myBall = new Ball(origin);
    ballCollection.add(myBall);
  }

  for ( int i = 0; i < agentsN; i++) {
    Vec3D origin_1 = new Vec3D(random(vx), random(vy), start_1);
    Ball_1 myBall_1 = new Ball_1(origin_1);
    ballCollection_1.add(myBall_1);
  }