[Solved] How do use same code in single-player AND multi-player?

This question is solved. But I can't close this question...("closing question" requires 50 karma?)

Hi all. I created a multi-player TPS game.

First plan, the game was ONLY multi-player, But currently the game needs single-player. (campaign mode)

For this reason, my game's C# code is depend on unity networking. How do use same code in single-player AND multi-player? If it is not possible, How do fix my code?

My stupid plan is...

 void Shot() {
     networkView.RPC("RpcShot", RPCMode.All);
 }
 [RPC]
 void RpcShot() {
     Instantiate(prefabBullet);
 }

Fix this code to...

 void Shot() {
     if (WrapNetwork.isMultiPlayer) {
         networkView.RPC("RpcShot", RPCMode.All);
     }else{
         RpcShot();
     }
 }
 [RPC]
 void RpcShot() {
     Instantiate(prefabBullet);
 }