War module similar to erepublik

I would like to make a war module similar with the one in [login to view URL] I`m running a ravan mafia script modified 80% by me, the core engline and database are the same with the original script with some alterations. The idea is based on mafia wars and I would like to add an war module in witch players can fight to conquer a city. The rules are simple Players are divided in two: - independent players - gang member players The war module should recognise if the players is independent or a gang member If he is independent he will have the option to chose on what side he will fight If he`s a gang member automatically he will be assigned to the side of his gang. The winner is decided after 24 hours comparing the hit points made by each side Hit points are weapons power If the winner is in the side who started the war, that city will go to the one who started the war. If the winner is in the other side the city will go to the player who hit most damage in that side.