Call function on clients from server?

Code (CSharp):

1.    
2. using UnityEngine;
3. using System.Collections;
4. using System.Collections.Generic;
5. using UnityEngine.UI;
6. using UnityEngine.Networking;
7. using System;
8.  
9. public class MapGen : NetworkBehaviour {
10.  
11. [Server] void DisplayMap() //creates prefabs
12.     {
13.         for (int y = 0; y < height; y++)
14.         {
15.             for (int x = 0; x < width; x++)
16.             {
17.                 count += 1;
18.                 if(map [x,y] == 0){
19.                     float holdX;
20.                     float holdY;
21.                     if (y % 2 == 0)
22.                     {
23.                         holdX = x + 0.5f;
24.                     }
25.                     else
26.                     {
27.                         holdX = x;
28.                     }
29.  
30.                     holdY = y - ((float)y) / 8;
31.  
32.  
33.                     GameObject cloneGameObject = (GameObject)Instantiate(hex, new Vector3(holdX, 0, holdY), Quaternion.Euler(270, 90, 0));
34.  
35.                     NetworkServer.Spawn(cloneGameObject);
36.                     cloneGameObject.GetComponent<Tile>().SetHoleServer(); // SEEMS TO BE WORKING
37.                     cloneGameObject.GetComponent<Tile>().RpcSetHoleClient();
38.  
39.  
40.  
41.  
42.  
43.  
44.                      }
45.                         }
46.                 }
47.         }
48. }

Code (CSharp):

1. using System.Collections;
2. using System;
3. using System.Linq;
4. using UnityEngine;
5. using System.Collections.Generic;
6. using UnityEngine.Networking;
7. public class Tile : NetworkBehaviour
8. {  
9.     [SyncVar]
10.     public Renderer rend;
11.     public bool isHole = false;
12.  
13.     [ClientRpc]
14.     public void RpcSetHoleClient(){
15.         if (!isServer) {
16.             Debug.Log ("THE CLIENT IS CALLING SETHOLE");
17.             if(isHole == true){
18.                 rend = GetComponent<Renderer> ();
19.                 rend.enabled = false;
20.             }
21.         }
22.     }
23. }

I'm not able to get the message THE CLIENT IS CALLING SETHOLE, any advice?

 

I'm not super certain of how I'm to use OnStartClient(), I tried adding this to my Tile class:

Code (CSharp):

1. using System.Collections;
2. using System;
3. using System.Linq;
4. using UnityEngine;
5. using System.Collections.Generic;
6. using UnityEngine.Networking;
7. public class Tile : NetworkBehaviour
8. {
9.     [SyncVar]
10.     public Renderer rend;
11.     [SyncVar]
12.     public bool isHole = false;
13.    
14.     public override void OnStartClient(){
15.     RpcSetHoleClient ();
16.     }
17.     [ClientRpc]
18.     public void RpcSetHoleClient(){
19.         if (!isServer) {
20.             Debug.Log ("THE CLIENT IS CALLING SETHOLE");
21.             if(isHole == true){
22.                 rend = GetComponent<Renderer> ();
23.                 rend.enabled = false;
24.             }
25.         }
26.     }
27. }

And then instead of calling RpcSetHoleClient() in my MapGen Class I did:

Code (CSharp):

1.                     cloneGameObject.GetComponent<Tile>().OnStartClient();

Which didn't work

 

Okay! I seem to have got it

Code (CSharp):

1.     public override void OnStartClient(){
2.         if(isHole == true){
3.             blocked = true;
4.             rend = GetComponent<Renderer> ();
5.             rend.enabled = false;
6.         }
7.     }

Just have to do

Code (CSharp):

1. cloneGameObject.GetComponent<Tile>().isHole = true;

Before spawning it

 

Hello Jingle,

To be clear, a client cannot call a ClientRpc method, only the server can. On the client, the method will do nothing, and on the server, it will cause it to be called on all of the clients that have it in scope.

As an addition to this, since you're using a SyncVar for your "isHole" member, you could also use a hook method to perform the update that you desire, in case the value ever changes on the server. Lastly, I'm not aware, but does the SyncVar on the Renderer actually work for replicating the reference, if it's not attached to a NetworkIdentity object?

 

I see you're generating a map server side.

How big is it? I tried generating such a map, with a dimension like 128 * 32. At that point, whenever a real client (so not the local client from the host application) was connecting, I got some "Message too big" errors, seemingly due to the amount of "blocks" being sent from the server to the new client.

Did you encounter this issue? How did you manage it?

Also, it seems to me that your original strategy of using a RPC for each time was quite overkilling; indeed, the client representation of each tile contained all the data required to handle the rendering updates, so adding a communication overhead on top of that was unnecessary.

Now, I'm wondering if there's any difference in you using "OnStartClient" or "OnStart" to handle the deactivation of the renderer? (Because I've been using "OnStart" until now; not knowing about "OnStartClient" ;-p)