System that have to run once

Hello,

long story short, how can i add/remove entities from a system ?

in my multiplayer prototype i have 2 gameObject holding 2 camera.
When Player 2 enter the game, i need a system that disable Player 1's on Player's 2 Client. (and vise versa)

but how can i get a system to do it only once ? i dont want it to disable things every frame in the OnUpdate method.

Also, for the moment i use that to filter what entity my Moving system should act on

Code (CSharp):

1.     protected override void OnUpdate()
2.     {
3.         foreach (var entity in GetEntities<Group>())
4.         {
5.             if (entity.networkIdentity.isLocalPlayer)
6.             {
7.                 Move(entity)
8.             }
9.         }
10.     }

But that mean my script look through every entity each frame to look at isLocalPlayer. wouldn't it be better to remove !isLocalPlayer from the system ?

 

Systems only run if there are entities who matches the ComponentGroup of a system...
So you can work with tags on entities or with event entities

 

i'm not sure to understand. how can i put tags checks in my private struct group ?
also i never heard of event entities either...

currently my private struct look like this

Code (CSharp):

1.     private struct Group
2.     {
3.         public Transform transform;
4.  
5.         public NetworkIdentity networkIdentity;
6.  
7.         public PlayerInput playerInput;
8.         public PlayerCameraVariablesComponent variables;
9.  
10.     }

i cant disable player input nor variables and i dont think disabling transform or networkidentity will do any good.