Hello,
I am pretty new to Processing but have some experience in ActionScript.
I am trying to make a fish like particle system that behaves as a school of fish.
I want to pass the instance of the manager class to a sub class so that the subclass can reference to a property of the main class. Below i show the structure:
mainAppilcationFile //like the document class in AS3
 |_fishManager1
 |_fishManager2 // the manager class with a property
   |_mainFish  //the instance of the main fish
   |_followFish // the class that wants to know the position of mainFish

basically i want the followFish to know where the mainFish is positioned. So i thought i pass in the reference to the manager class in the constructor of the follow fish like this followFish = new FollowFish(this);
the constructor of followFish looks like this:
void FollowFish(class pRoot)
{
 _parent = pRoot;
 _mainFishX = _parent.mainFish.x
}

this seems not to be working. When the manager class is at the top level (so the manager class is the "DocumentClass") it works (then i don't need the reference), but because i want to have multiple schools of fish i need to put the manager class a level down.

Thanks in advance!
Peter Goes

like philho said.

I'd just like to add that, if the mainfish object is the only thing you want to reference, you can just reference that directly:

void FollowFish(MainFish m) {
_mainFishX=m;
}