Oil Harvesting

I'm trying to figure out how to implement oil as a resource in the game. So far, though, I've only been able to find dead resources. Anyone who provides me with a solution will recieve credit in the campaigns I plan.

Do you want to replace one of the existing resources with oil or do you want to add it?
If you want to add it you need to know some triggering.
You would need to:
- display the current resource amount
- check on every order that costs oil whether you have enough
- invent some way to generate the resource (ie add 50gallons every 10 sec
for each oil refinery owned by player)

Oil is disgusting.

Oil makes the world go 'round, the world go 'round, the world go 'round!

There is no way to add additional resources to wc3. You are stuck with 2 regular resources and one food-style resource. If you need more than these, you are required to trigger it.

Yeah, the world 'go round to hell. Wonderful world we live in.