Per wrote:. you can only build the first defensive building adjacent to an oil derrick... that would be trivial to implement, and we would not need any new model. The in-game excuse could be that the earliest defensive structures need to be powered directly from the derrick, since, uhm, they have not researched good batteries yet. Or something.
What goal of your suggestion? Kill Truck Rush/Tower Rush?
We have issue - player expanding too fast. Player get all oil resources at map from start of game. Player does not need to defend his oil resources.
Also player can take resources directly at enemy base.
Paid oil derricks - was solution which should restrict player from very fast expanding.
Well. I think we can make variable price for oil derrick
price = Math.max(([count of your derricks] - 4) * 20, 100);
5th - $20
6th - $40
max price - $100
Anotehr suggestion - make variable power income from derricks
More derricks => less power income / per derrick