[Help] Something like... weapons (?)

[eclypt]

Hello there! i've played a Warcraft III Resident Evil game before, now i just have a question that i can't find the answer, here it is:

How can i make weapons like they do?

The Weapon is a Item-Based, every fire you lost 1 of your current Ammunition.
who've played or not , can help?

 

[HeX.16]

Try HEre

 

[eclypt]

dam, i din't read it at all, i'll try

 

[HeX.16]

Umm can you wait till tomorrow.
I can make you a better system.
List the features and i can send it to you tomorrow.