Actionscript 3 :: Component Based Architecture In Game Development?

I have been thinking of trying out component based architecture for game development. I have read some blog posts and articles about it but I have a few things I have not sorted out yet. When I say component based I mean that you can add components to a ComponentManager that updates all components in its list. I want to try this to avoid getting classes that inherits variables and functions that they don´t need. I really like the idea of having an really simple entity class with a lot of components working side by side without getting bloated. Also, it is easy to remove and add functionality at runtime wich makes it really cool.

This is what I am aiming for.

// this is what the setup could be like
entity.componentManager.add(new RigidBody(3.0, 12.0));
entity.componentManager.add(new CrazyMagneticForce(3.0));
entity.componentManager.add(new DrunkAffection(42.0, 3.0));
// the game loop updates the component manager which updates all components
entity.componentManager.update(deltaTime);

Communication: Some of the components need to communicate with other components I can´t rely on the components to be self-sustaining. Sometime they will need to communicate with the other components.In Unity 3D, you can access the components using GetComponent().I was thinking of doing it like this, but what happens if you have two components of the same type? Maybe you get a Vector back.

var someComponent : RigidBody = _componentManager.getComponent(RigidBody);

Priority: Some components need to update before others

Some components need to update before others to get the correct data for the current game loop. I am thinking of adding a PRIORITY to each component, but I am not sure that this is enough. Unity uses LateUpdate and Update but maybe there is a way to get an even better control of the order of execution.

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