isTouching()

[Mitch]

EDIT: Going by your previous post, seems like you didn't.

By the way, the use of sub_80DF39E over sub_8105CAC is intentional. Using sub_80DF39E will only disable weapon pickup whereas sub_8105CAC will disable everything with a Use (f) dialogue. Hence why the custom function is called disablePickup and not disableUse.

My version works exactly the same.

Can you try this:
After you picked up a weapon and disabled the pickup.
You should be hearing the ammo pickup sound and the weapon will disappear and reappear when you go over the weapon again.
(+ not max ammo)

There are 3 pointers to the function Touch_Item_Auto and i only replace the last one (3).
1: This one is responsible for the 'Press [Use] to swap for ...' message.
2: No idea. I don't know how to trigger it. It might have something to do with picking up health.
3: Picks up the item.