Spawning Within Simulated Functions
There are other interesting hidden behaviors that may not be immediately apparent. For example, because of the requirements that an actor be owned by a playerpawn at some point in its parent hierarchy, a function can only be replicated to a single player in the game. (No, making a player owned by another player will not work.
Multicast function replication does not exist. You can try to get this behavior using simulated functions, but no data can be passed between the server and the client, (since they both originate on their local machine, and exist only on that local machine.) Or you can use replicated variables, which can and are replicated to all players in the game, assuming they are relevant to them.
If a spawn is performed in a simulated function (simulated functions are explained later), then multiple copies of the actor are spawned: the server, and each of the clients that the simulated function was run on. The server's version is normally then replicated to the client, so the client would see two versions. This would create strange behavior as the two became out of sync, and the client-spawned one could easily be mistaken for the 'official one' that for some reason, isn't having it's variables replicated.
