Hi! I am customizing the get the gold app http://appinventor.mit.edu/explore/ai2/get-gold
I want that when the sprite has collided with all the coins (and therefore the coins have disappeared) the label that counts the amount of time stops. To do so I've created a list and it works but is there an easier way to do it without using a list? I've created an empty list and every time a coin disapears I add it to the list. When the length of the list is 5 (I have 5 coins) I want the clock to stop.
Test the visibility of all the relevant coin sprites ? You could create a procedure for that to run after each collision.