The hook attribute can be used to specify a function to be called when the sync var changes value on the client.
This ensures that all clients receive the proper variables from other clients.
//Attach this to the GameObject you would like to spawn (the player). //Make sure to create a NetworkManager with an HUD component in your Scene. To do this, create a GameObject, click on it, and click on the Add Component button in the Inspector window. From there, Go to Network>NetworkManager and Network>NetworkManagerHUD respectively. //Assign the GameObject you would like to spawn in the NetworkManager. //Start the server and client for this to work.
//Use this script to send and update variables between Networked GameObjects using UnityEngine; using UnityEngine.Networking;
public class Health : NetworkBehaviour { public const int m_MaxHealth = 100;
//Detects when a health change happens and calls the appropriate function [SyncVar(hook = "OnChangeHealth")] public int m_CurrentHealth = m_MaxHealth; public RectTransform healthBar;
public void TakeDamage(int amount) { if (!isServer) return;
//Decrease the "health" of the GameObject m_CurrentHealth -= amount; //Make sure the health doesn't go below 0 if (m_CurrentHealth <= 0) { m_CurrentHealth = 0; } }
void Update() { //If the space key is pressed, decrease the GameObject's own "health" if (Input.GetKey(KeyCode.Space)) { if (isLocalPlayer) CmdTakeHealth(); } }
void OnChangeHealth(int health) { healthBar.sizeDelta = new Vector2(health, healthBar.sizeDelta.y); }
//This is a Network command, so the damage is done to the relevant GameObject [Command] void CmdTakeHealth() { //Apply damage to the GameObject TakeDamage(2); } }