Sync Structures

Multiplayer & Networking
1

Hi,
So i am new to UNET, and i have been battling arround the web for the whole week searching for information on how to properly syncronize structures. I am currently working on a college project that involves creating a multyplayer game, and what happens is that my whole game works arround a structure that stores the information of every grid position of my board game, and i need to get that syncrozined for all the clients.

public struct Quadricula {
    public Vector3 position;
    public bool isSpawn;
    public bool isOpen;
    public bool isWall;
    public bool hasBox;
    public bool hasBomb;
    public bool onFire;
    public GameObject obj;
}


public class SyncListQuadricula : SyncListStruct<Quadricula>{}

public class GameManager : NetworkBehaviour {
  
    public SyncListQuadricula m_labirinto = new SyncListQuadricula ();

//More Variables here

void Start () {
        labirinto = new Quadricula[rows, cols];

        // Gerar Labirinto
        SetLabirinto ();

        if (isServer) {
            SetCaixas ();
        } 
    }

//SetLabirinto()

private void SetCaixas () {
        int placedBoxes = 0;

        while (placedBoxes != numBoxes) {
            for (int z = 0; z < rows; z++) {
                for (int x = 0; x < cols; x++) {
                    if (!labirinto [z, x].isWall && !labirinto [z, x].isSpawn && !labirinto [z, x].isOpen && !labirinto[z,x].hasBox) {
                        int random = Random.Range (0, 3);
                        if (random == 1 && placedBoxes != numBoxes) {
                            GameObject box = Instantiate (destructableBox, labirinto [z, x].position, Quaternion.identity, destructablesHolder);
                            labirinto [z, x].hasBox = true;
                            labirinto [z, x].obj = box;
                            placedBoxes++;
                            NetworkServer.Spawn (box);
                        } else {
                            labirinto [z, x].hasBox = false;
                        }
                    }
                }
            }
        }
    }

ok, so, here is the problem, the player checks this structure to see if the position is clear and if he can walk to that position, if it has a box the player doesn’t move… if the structure doens’t syncronize the client will have no way of knowing, he will just move across the boxes…

i was sorta able to do this trought a ClientRpc function, but it was unstabble and it didn’t worked quite well…

Can anyone give me a hint on how to properly syncronize this structure? I houlp be so gratefull, this is wrecking my head !

2

You could use the SyncListStruct you’re already using. When you make changes to one of the elements of a struct you will need to do that on the host only, and you need to create a new struct that you assign to the SyncListStruct instead of just changing one of the variables in the struct. That last part is because just changing one of the variables in a struct won’t set it to dirty, so the host won’t sync it to the clients unless you assign a new struct to it.