Yes, all actions have a cost associated with it. You can use it in different ways: like you describe: have some agents prefer certain actions, different from t

Yes, all actions have a cost associated with it. You can use it in different ways: like you describe: have some agents prefer certain actions, different from the preferences of other agents. The way I use it is to adapt to the environment. For instance, I make walking over to let's say an apple, less costly if the closest apple is near.