Use dictionary for mod lookup

Reactor/Networking/CustomRpc.cs

@@ -61,7 +61,7 @@ namespace Reactor.Networking
                 true => AmongUsClient.Instance.StartRpcImmediately(netObject.NetId, CustomRpcManager.CallId, SendOption, targetClientId)
             };
 
-            var pluginNetId = ModList.Current.Single(x => x.Id == PluginId).NetId;
+            var pluginNetId = ModList.GetById(PluginId).NetId;
             writer.WritePacked(pluginNetId);
             writer.WritePacked(Id);
 
@@ -198,7 +198,7 @@ namespace Reactor.Networking
                     var pluginNetId = reader.ReadPackedUInt32();
                     var id = reader.ReadPackedUInt32();
 
-                    var pluginId = ModList.Current.Single(x => x.NetId == pluginNetId).Id;
+                    var pluginId = ModList.GetByNetId(pluginNetId).Id;
                     var customRpc = customRpcs.Single(x => x.PluginId == pluginId && x.Id == id);
 
                     customRpc.UnsafeHandle(__instance, customRpc.UnsafeRead(reader.ReadMessage()));

Reactor/Networking/ModList.cs

@@ -7,8 +7,21 @@ namespace Reactor.Networking
 {
     public static class ModList
     {
+        private static Dictionary<string, Mod> _mapById;
+        private static Dictionary<uint, Mod> _mapByNetId;
+
         public static ISet<Mod> Current { get; private set; }
 
+        public static Mod GetById(string id)
+        {
+            return _mapById[id];
+        }
+
+        public static Mod GetByNetId(uint netId)
+        {
+            return _mapByNetId[netId];
+        }
+
         internal static void Update()
         {
             var i = (uint) 0;
@@ -22,6 +35,9 @@ namespace Reactor.Networking
                     plugin.Instance.GetType().GetCustomAttribute<ReactorPluginSideAttribute>()?.Side ?? PluginSide.Both
                 ))
                 .ToHashSet();
+
+            _mapById = Current.ToDictionary(mod => mod.Id, mod => mod);
+            _mapByNetId = Current.ToDictionary(mod => mod.NetId, mod => mod);
         }
     }
 }