How To Convert a Singleplayer mod to Multiplayer

[xiiRockstarrTv]

So a friend of mine has been working on a custom made mod for me and himself for a project we're working on, but the mod is only compatible in single player minecraft. Since neither of us is experienced with this, I just wanted to ask around and see if anyone has encountered this before and/or has any solutions on how I'd go able making his mod workable on a multiplayer server.

 

The version of forge we are running on is 1.7.10.

[Draco18s]

1) 1.7.10 is no longer supported by Forge

2) If you build things right, single player and multiplayer are identical. The problem you have is that you've assumed that the client and server are running on the same thread (bad, bad idea, even for Single Player) and thus don't differentiate between Client and Server worlds/entities.  You need to discriminate using a Proxy and Packet Handlers.

[larsgerrits]

1) 1.7.10 is no longer supported by Forge