Object multiplayer logic/flow is confusing and error-prone

[colbybhearn]

Multiple scenarios exist where multiple communication is needed. These and any other variables need to be understood and a system developed for better control, flow, consistency, and organization etc.

User input:
ActionUpdates about input to simulate on the server are only sent from client to server.

physis-related
Object Updates about physics info (Pos/Orient/Vel) are only sent from server to client

Server-side-detection
Some game logic should only be run at the server. Thus, some changes only initiate at the server. The client needs that information.

Client-synchronization of details:
If something changes about an object that affects that objects appearance or behavior, all clients need that information.