protected override void Update(GameTime gameTime)
{
lastGameTime = gameTime;
lastDT = (float)lastGameTime.ElapsedGameTime.TotalSeconds;
// update our input
OnBeforeInputUpdate?.Invoke();
Input.Update();
// update the UI
UI.UpdateUI();
// update our game logic
OnBeforeLogicUpdate?.Invoke();
Behavior.UpdateAllBehaviorSystems();
// update physics stuff
OnBeforePhysicsUpdate?.Invoke();
Physics.World.Step(lastDT);
DynamicBody.UpdateAllBodies();
OnEndUpdate?.Invoke();
base.Update(gameTime);
}