Question Once a variable change, call the function

I am developing a multiplayer game with Photon. There is a string variable. I can change this string variable on my master client. I want to sync the string value to all clients, and as long as string value is updated, another function is invoked.
For example, I updated this string variable to "Hello there", once the clients receives this change, another function is called. I know RPC call can sync the variable like the code below. However, I don't know how I can invoke another function once the string value changes.

if (PhotonNetwork.isMasterClient)
photonView.RPC ("SendMessageRPC", PhotonTargets.All, "Hello there!");


Thanks for your help.

 

I'm not familiar if Photon has some built in functionality for this (haven't tried Photon for more than a few hours), but you can pretty easily brute force this.

Code (csharp):

1. private string mySyncedString = "";   //This string is somehow synced using Photon, RPC I guess
2. private string mySyncedStringOld = "";  //old value of the synced string we retain for comparison
3.  
4. void Update()
5. {
6.     if (mySyncedString != mySyncedStringOld)  //Check if mySyncedString has changed
7.     {
8.         callMeWhenStringChanges();  //It changed, so call some function
9.     }
10. }
11.  
12. void callMeWhenStringChanges()
13. {
14.     //Do something useful here I assume
15.  
16.  
17.     //Set the old value of the string to the new value so we can check again in future frames for additional changes
18.     mySyncedStringOld = mySyncedString;
19. }

 

CustomProperties are probably the best way to go with this. There is a callback on all clients whenever a custom property value is changed, so you could call your function in that.