Get "Pick one object" to stop after one object

[Fly]

I'm making a game where a marker will appear in a random coordinate, and the player has to click it to make it disappear so a new marker will spawn. Right now, I have a grid of all my marker objects, and I've set them all Invisible. I've set up the function:

Pick one of [marker object] (at random) = [marker object] Reappear

Thing is, this makes it CONSTANTLY pick an object and make it reappear, and I want it to only do this once (then, when there's no objects, spawn another one).

How do I do this? And if I can't, is there an easier way?

[mobichan]

You can use a counter object and set it to 1 every time you pick a random object. Then when you destroy the object, set the counter to 0. Then add another condition to your "pick random" event that checks if the counter = 0.

Mobichan

[DavidN]

Depending on the other events in your game, you might also be able to just use "Only one action when event loops" - right-click on an event to Insert a new condition, then go to the Special object (first one in the list), and it's in "Limit conditions".

[Byrom]

I like to create an invisible bouncing ball that creates a new object relative to it when there are none left. The snakes example also has another method that you might want to look at.