[Add] FishNet

Assets/FishNet/Runtime/Observing/Conditions/HostOnlyCondition.cs

@@ -0,0 +1,25 @@
+using FishNet.Connection;
+using FishNet.Observing;
+using UnityEngine;
+
+namespace FishNet.Component.Observing
+{
+    [CreateAssetMenu(menuName = "FishNet/Observers/Host Only Condition", fileName = "New Host Only Condition")]
+    public class HostOnlyCondition : ObserverCondition
+    {
+        public override bool ConditionMet(NetworkConnection connection, bool currentlyAdded, out bool notProcessed)
+        {
+            notProcessed = false;
+            /* Only return true if connection is the local client.
+             * This check only runs on the server, so if local client
+             * is true then they must also be the server (clientHost). */
+            return NetworkObject.ClientManager.Connection == connection;
+        }
+
+        /// <summary>
+        /// How a condition is handled.
+        /// </summary>
+        /// <returns></returns>
+        public override ObserverConditionType GetConditionType() => ObserverConditionType.Normal;
+    }
+}