I am new to server-side programming. What is the “simplest” way to make an NPC be “visible” (in the same position, etc.) for all players as they drop in and drop out of a space? Is there a framework people use? Do they code it from scratch? I made a multiplayer environment with babylonjs, node and express. How do I take it to the next level such that all players can observe an environment controlled agent? I’m completely new to this.