members:
	public Vector3 currentPosition
	public Vector3 lastPosition
	public PolarVector velocity
	public float scale
	public float mass
	public float adhesion
	public float cohesion
	
	public enum State { ... }
	public float energy
	public float stateChangeThreshold
	
	public ObjectRotation orientation
	
functions:

	public Mass()
	public Copy(Mass original)
	
	public void ApplyGravity()
	public void ApplyForce()
	public void IncrementEnergy(float increment)