title: UML Activity diagram how to show game ends when time has passed?
body: <p><a href="https://i.stack.imgur.com/OttJS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OttJS.png" alt="enter image description here"></a></p>
  
  <p>When 20 seconds passes, the player unlocks poison.  Poison can be dropped to slow down the enemy, or the player can accidentally eat his own poison and slow down.  </p>
  
  <p>I want to show that the player wins after 60 seconds has passed.  I thought I would show it as a loop looping the 20seconds 3 times but that would be incorrect because the player can only unlock the poison once.  </p>
  
  <p>Would the best way of showing this be to draw a rectangle around the entire diagram and just state (after 60 seconds, player wins)? - and have it lead to an end circle?</p>