Handle NMT Login packet
This commit is contained in:
AeonLucid
@@ -0,0 +1,13 @@
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using Prospect.Unreal.Core;
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using Prospect.Unreal.Net.Actors;
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namespace Prospect.Unreal.Runtime;
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public class UGameInstance
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{
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public AGameModeBase? CreateGameModeForURL(FUrl inUrl, UWorld inWorld)
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{
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// TODO: World.SpawnActor
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return new AGameModeBase();
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}
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}
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@@ -0,0 +1,8 @@
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namespace Prospect.Unreal.Net.Player;
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public class UPlayer
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{
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public APlayerController? PlayerController { get; set; }
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public int CurrentNetSpeed { get; set; }
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}
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@@ -1,6 +1,8 @@
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using Prospect.Unreal.Core;
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using Prospect.Unreal.Core.Names;
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using Prospect.Unreal.Exceptions;
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using Prospect.Unreal.Net;
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using Prospect.Unreal.Net.Actors;
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using Prospect.Unreal.Net.Channels;
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using Prospect.Unreal.Net.Packets.Bunch;
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using Prospect.Unreal.Net.Packets.Control;
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@@ -12,9 +14,14 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
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{
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private static readonly ILogger Logger = Log.ForContext<UWorld>();
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private UGameInstance? _owningGameInstance;
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private AGameModeBase? _authorityGameMode;
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public UWorld(FUrl url)
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{
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Url = url;
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_owningGameInstance = null;
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_authorityGameMode = null;
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}
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public FUrl Url { get; }
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@@ -28,6 +35,44 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
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NetDriver.ConnectionlessHandler?.Tick(deltaTime);
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}
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}
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public void SetGameInstance(UGameInstance instance)
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{
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_owningGameInstance = instance;
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}
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public UGameInstance GetGameInstance()
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{
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if (_owningGameInstance == null)
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{
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throw new UnrealException($"Attempted to retrieve null {nameof(UGameInstance)}");
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}
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return _owningGameInstance;
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}
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public bool SetGameMode(FUrl worldUrl)
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{
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if (IsServer() && _authorityGameMode == null)
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{
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_authorityGameMode = GetGameInstance().CreateGameModeForURL(worldUrl, this);
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if (_authorityGameMode != null)
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{
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return true;
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}
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Logger.Error("Failed to spawn GameMode actor");
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return false;
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}
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return false;
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}
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public AGameModeBase? GetAuthGameMode()
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{
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return _authorityGameMode;
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}
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public bool Listen()
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{
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@@ -114,8 +159,12 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
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{
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case NMT.Hello:
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{
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const int localNetworkVersion = 0;
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if (NMT_Hello.Receive(bunch, out var isLittleEndian, out var remoteNetworkVersion, out var encryptionToken))
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{
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Logger.Information("Client connecting with version. LocalNetworkVersion: {Local}, RemoteNetworkVersion: {Remote}", localNetworkVersion, remoteNetworkVersion);
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// TODO: Version check.
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if (string.IsNullOrEmpty(encryptionToken))
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@@ -130,9 +179,120 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
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break;
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}
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case NMT.Netspeed:
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{
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if (NMT_Netspeed.Receive(bunch, out var rate))
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{
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connection.CurrentNetSpeed = Math.Clamp(rate, 1800, NetDriver.MaxClientRate);
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Logger.Debug("Client netspeed is {Num}", connection.CurrentNetSpeed);
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}
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break;
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}
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case NMT.Abort:
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{
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break;
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}
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case NMT.Skip:
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{
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break;
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}
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case NMT.Login:
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{
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throw new NotImplementedException();
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// Admit or deny the player here.
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if (NMT_Login.Receive(bunch, out var clientResponse, out var requestUrl, out var uniqueIdRepl, out var onlinePlatformName))
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{
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connection.ClientResponse = clientResponse;
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// Only the options/portal for the URL should be used during join
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var newRequestUrl = requestUrl;
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var oneIndex = requestUrl.IndexOf('?');
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var twoIndex = requestUrl.IndexOf('#');
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if (oneIndex != -1 && twoIndex != -1)
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{
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newRequestUrl = requestUrl.Substring(Math.Min(oneIndex, twoIndex));
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}
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else if (oneIndex != -1)
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{
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newRequestUrl = requestUrl.Substring(oneIndex);
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}
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else if (twoIndex != -1)
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{
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newRequestUrl = requestUrl.Substring(twoIndex);
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}
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else
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{
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newRequestUrl = string.Empty;
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}
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Logger.Debug("Login request: {RequestUrl} userId: {UserId} platform: {Platform}", newRequestUrl, uniqueIdRepl.ToDebugString(), onlinePlatformName);
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// Compromise for passing splitscreen playercount through to gameplay login code,
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// without adding a lot of extra unnecessary complexity throughout the login code.
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// NOTE: This code differs from NMT_JoinSplit, by counting + 1 for SplitscreenCount
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// (since this is the primary connection, not counted in Children)
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// TODO: Implement proper FUrl constructor
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var inUrl = new FUrl
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{
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Map = Url.Map + newRequestUrl
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};
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if (!inUrl.Valid)
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{
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requestUrl = newRequestUrl;
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Logger.Error("NMT_Login: Invalid URL {Url}", requestUrl);
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bunch.SetError();
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break;
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}
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var splitscreenCount = Math.Min(connection.Children.Count + 1, 255);
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// Don't allow clients to specify this value
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inUrl.Options.Remove("SplitscreenCount");
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inUrl.Options.Add($"SplitscreenCount={splitscreenCount}");
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requestUrl = inUrl.ToString();
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// skip to the first option in the URL
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var tmp = requestUrl.Substring(requestUrl.IndexOf('?'));
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// keep track of net id for player associated with remote connection
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connection.PlayerId = uniqueIdRepl;
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// keep track of the online platform the player associated with this connection is using.
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connection.SetPlayerOnlinePlatformName(new FName(onlinePlatformName));
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// ask the game code if this player can join
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string errorMsg = null;
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var gameMode = GetAuthGameMode();
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if (gameMode != null)
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{
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gameMode.PreLogin(tmp, connection.LowLevelGetRemoteAddress(), connection.PlayerId, out errorMsg);
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}
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if (!string.IsNullOrEmpty(errorMsg))
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{
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Logger.Debug("PreLogin failure: {Error}", errorMsg);
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NMT_Failure.Send(connection, errorMsg);
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connection.FlushNet(true);
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}
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else
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{
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WelcomePlayer(connection);
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}
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}
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else
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{
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connection.ClientResponse = string.Empty;
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}
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break;
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}
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default:
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@@ -143,6 +303,32 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
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}
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}
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private void WelcomePlayer(UNetConnection connection)
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{
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// TODO: Properly fetch level name from CurrentLevel
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var levelName = "/Game/ThirdPersonCPP/Maps/ThirdPersonExampleMap";
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// TODO: Properly fetch from AuthorityGameMode
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var gameName = "/Script/ThirdPersonMP.ThirdPersonMPGameMode";
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var redirectUrl = string.Empty;
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NMT_Welcome.Send(connection, levelName, gameName, redirectUrl);
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connection.FlushNet();
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// connection.QueuedBits = 0;
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connection.SetClientLoginState(EClientLoginState.Welcomed);
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}
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public bool IsServer()
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{
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if (NetDriver != null)
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{
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return NetDriver.IsServer();
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}
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return true;
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}
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public async ValueTask DisposeAsync()
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{
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if (NetDriver != null)
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