GoakeFlax/Source/Game/GameMode/GameMode.cs

using FlaxEditor.Content.Settings;
using FlaxEngine;
using FlaxEngine.Networking;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace Game
{
    /// <summary>
    /// The game mode logic that only exists on server.
    /// </summary>
    public class GameMode
    {
        private static GameMode currentGameMode = null;

        private static bool ServerRunning => currentGameMode != null;

        public const string DefaultServerAddress = "localhost";
        public const ushort DefaultServerPort = 59183;

        public string ServerAddress = DefaultServerAddress;
        public ushort ServerPort = DefaultServerPort;

        private Dictionary<uint, PlayerActor> players = new Dictionary<uint, PlayerActor>();

        public static bool Connect(string ip = null, ushort port = 0)
        {
            Console.Clear();
            if (ServerRunning)
                NetworkManager_Cleanup();

            var networkSettings = GameSettings.Load<NetworkSettings>();
            networkSettings.Address = ip ?? DefaultServerAddress;
            networkSettings.Port = port != 0 ? port : DefaultServerPort;
            GameSettings.LoadAsset<NetworkSettings>().SetInstance(networkSettings);

            if (NetworkManager.StartClient())
            {
                Console.PrintError("Server connection failed.");
                return false;
            }

            Console.Print($"Connecting to {networkSettings.Address}:{networkSettings.Port}...");

            return true;
        }

        public static bool StartServer(bool listenServer)
        {
            Console.Clear();
            if (ServerRunning)
                NetworkManager_Cleanup();

            var networkSettings = GameSettings.Load<NetworkSettings>();
            networkSettings.Address = "any";
            networkSettings.Port = DefaultServerPort;
            GameSettings.LoadAsset<NetworkSettings>().SetInstance(networkSettings);

            currentGameMode = new GameMode()
            {
                ServerAddress = "localhost",
                ServerPort = networkSettings.Port,
            };

            Console.Print("Starting server... port: " + networkSettings.Port);

#if FLAX_EDITOR
            FlaxEditor.Editor.Instance.PlayModeEnd += NetworkManager_Cleanup;
#else

#endif
            NetworkManager.ClientConnected += NetworkManager_ClientConnected;
            NetworkManager.ClientConnecting += NetworkManager_ClientConnecting;
            NetworkManager.StateChanged += NetworkManager_StateChanged;

            bool failure;
            if (listenServer)
                failure = NetworkManager.StartHost();
            else
                failure = NetworkManager.StartServer();
            if (failure)
            {
                Console.PrintError($"Failed to start the server, unable to bind to address {networkSettings.Address}:{networkSettings.Port}");
                return false;
            }

            currentGameMode.Start();

            return true;
        }

        public static void StopServer()
        {
            if (ServerRunning)
                NetworkManager_Cleanup();
        }

        private static void NetworkManager_Cleanup()
        {
            if (ServerRunning)
            {
                NetworkManager.ClientConnected -= NetworkManager_ClientConnected;
                NetworkManager.ClientConnecting -= NetworkManager_ClientConnecting;
                NetworkManager.StateChanged -= NetworkManager_StateChanged;

#if FLAX_EDITOR
                FlaxEditor.Editor.Instance.PlayModeEnd -= NetworkManager_Cleanup;
#else

#endif

                currentGameMode = null;
            }
        }

        private static void NetworkManager_StateChanged()
        {
            Console.Print("network manager state changed: " + NetworkManager.State.ToString());
        }

        private static void NetworkManager_ClientConnected(NetworkClient networkClient)
        {
            Console.Print("new client connected");

            currentGameMode.OnPlayerSpawn(networkClient.ClientId);
        }

        private static void NetworkManager_ClientConnecting(ref NetworkClientConnectionData arg0)
        {
            Console.Print("new client is connecting");

            bool allowConnection = true;
            arg0.Result = allowConnection ? 0 : 1;
        }



        public void Start()
        {
            // When mode is started
        }

        public void Tick()
        {
            // Run on every frame
        }

        public void End()
        {
            // When win condition is met
        }

        public void OnClientConnect()
        {

        }

        public void OnClientDisconnect()
        {

        }

        public void OnClientKill()
        {

        }

        public bool OnJoin()
        {
            return true;
        }

        public bool OnSpectate()
        {
            return true;
        }

        public bool OnPlayerRequestRespawn()
        {
            return true;
        }

        public void OnPlayerSpawn(uint clientId)
        {
            // Get random spawn
            var spawns = Level.GetActors<Actor>().Where(x => x.Name.StartsWith("PlayerSpawn_")).ToArray();
            Console.Print($"found {spawns.Length} spawns");

            var randomSpawn = spawns.First();

            Float3 spawnPosition = randomSpawn.Position + new Float3(0f, 4.1f, 0f);
            Float3 spawnAngles = randomSpawn.Orientation.EulerAngles;

            // Create player actor
            string prefabPath = Path.Combine(AssetManager.ContentPath, "Common");
            var playerPrefab = Content.Load<Prefab>(Path.Combine(prefabPath, "PlayerPrefab.prefab"));
            if (playerPrefab == null)
                Console.PrintError("GameModeManager: Failed to find PlayerPrefab");

            PlayerActor playerActor = PrefabManager.SpawnPrefab(playerPrefab).As<PlayerActor>();
            NetworkReplicator.AddObject(playerActor);
            playerActor.hai = 123;
            playerActor.Initialize(clientId);
            playerActor.IsActive = true;
            
            playerActor.Teleport(spawnPosition, spawnAngles);
            //NetworkReplicator.SetObjectOwnership(playerActor, clientId);

            NetworkReplicator.SpawnObject(playerActor);
        }

        public void OnPlayerInit()
        {

        }

        public void OnPlayerDeath()
        {

        }

        public void OnPlayerTakeDamage(/*entity player, float damage, entity source*/)
        {

        }

        public Float3 OnPlayerApplyForce(/*entity player, vector force, entity source*/)
        {
            return Float3.Zero;
        }
    }
}