Small menu problem.

Sorry if this question is too much to ask on the forums, I'm really not sure if 1-2 events can fix it, or if it requires an entire system of values, either way here it is:

In my game, I have a horizontal rectangular menu that you can go through during game play. There are 4 weapons in the menu, and a selector that goes from left to right by pressing spacebar. I got the idea from supermetroid so if any of you have played that you will know exactly what I'm talking about. Anyways, I use global values to tell the menu what weapons to put on it. Thing is if I have 1 weapon but none of the other weapons, my selector will still start at the farthest left space and go through every available/empty space on the menu.

What should I do to get the selector to start at the first available weapon, and cancel when the next space is empty?

Thanks for any help!

You could fastloop through each of the menu spaces and if they are not empty add the number of the ID for the item to a list, then just place the selector by moving through each item on the list. Does this help?