I want to count the amount of ammo a player "consumed" during in a fight. In particular I want to create "empty energy cells" after a fight, so the player can recharge them at a portable recharger. My problem is, that any way I thought of to do this ends up with major problems. For example, using a quest to check on the difference between the amount of any ammo type every couple of seconds would not account to the fact, that the player could pick some ammo up during the fight, and so on...
Does anyone have an idea how to accomplish my idea to count ammo "consumption" during a fight? Maybe I'm just blind...