Inventory Scrolling?

I can't seem to get my inventory to work properly. I have managed to get a HUD layer going with a lifebar and a slot for weapons, I can pick them up and use them, but I get a bit confused when it comes to setting up the variables.

This is how I currently have it set up:

On the HUD, I have a sprite with frames for each weapon

The player has instance variables:

Unarmed

Gun

Bazooka

And the crates are just sprites that when the player collides with for example the gun crate the player instance variable Gun is set to 1 and the gunslot is set to 1.

What is not happening that you are expecting to happen? Also for less risk I would use global variables instead of instance variable on the player object for any inventory.

I had issues being able to scroll between weapons in the inventory. I managed to get it working with global variables as you suggested. Heh, I need to remember to use globals more =)