void Start()
{
SetAABB();
engine = GameObject.FindWithTag("PhysicsEngine").GetComponent <PhysicsEngine>();
engine.AddRigidBody(this);
}
void Start()
{
//When this script first runs this function is ran (Like the Main of a normal program in c++ or Whatever)
//Runs the SetAABB Function Once
//Finds one Object in Game Land with the Hashtag "PhysicsEngine"
//Finds the Component (Like a member) called <PhysicsEngine>
//Uses the PhysicsEngine attached to the Object to add a Rigidbody to the Attached (To the Script) object
SetAABB();
engine = GameObject.FindWithTag("PhysicsEngine").GetComponent <PhysicsEngine>();
engine.AddRigidBody(this);
}