add 新增远程连接，实现多人游戏

Scripts/Controllers/ChessGame.cs

@@ -0,0 +1,101 @@
+using Godot;
+using Godot.Collections;
+
+public partial class ChessGame : Node2D
+{
+	ChessBoard board;
+	Global global;
+	private bool isSession = false;
+
+	// Called when the node enters the scene tree for the first time.
+	public override void _Ready()
+	{
+		// Init.Call();
+		global = GetNode<Global>("/root/Global");
+		board = GetNode<ChessBoard>("Chessboard");
+		// GetNode<Button>("Undo").Connect("pressed", Callable.From(board.Undo));
+		// GetNode<Button>("ReInit").Connect("pressed", Callable.From(board.ReInit));
+		// GetNode<Button>("Home").Connect("pressed", Callable.From(this.GoHome));
+
+		if (!global.RPClient.GetIsConnected()) {
+			return;
+		}
+
+		isSession = true;
+		GD.Print("ws is connected");
+		global.RPClient.OnPRCSessionExit += (cmd, code) => {
+			GoHome();
+		};
+		board.Set("Hello", Callable.From(() => {GD.PrintErr("hello");}));
+		board.Set("chessMoveFunc", Callable.From((Vector2 newPos, Vector2 fromPos) => {
+			var res = global.RPClient.SendSessionToAll(global.sessionId, new Dictionary{
+					{"type", "move"},
+					{"from", fromPos},
+					{"to", newPos},
+					{"fromX", fromPos.X},
+					{"fromY", fromPos.Y},
+					{"toX", newPos.X},
+					{"toY", newPos.Y},
+				});
+			GD.Print($"chessMoveFunc Callback {fromPos} -> {newPos} {res}");
+			return false;
+		}));
+		global.RPClient.OnPRCSessionRecv += (msg) => {
+			SessionMsgHandle(msg["msg"].AsGodotDictionary());
+		};
+	}
+
+	// Called every frame. 'delta' is the elapsed time since the previous frame.
+	public override void _Process(double delta) {
+	}
+
+	private void SessionMsgHandle(Dictionary msg) {
+		// GD.PrintErr($"session msg: {msg}");
+		switch (msg["type"].AsString()) {
+			case "move":
+				Vector2 to = new(GD.StrToVar(msg["toX"].ToString()).AsInt32(),
+					GD.StrToVar(msg["toY"].ToString()).AsInt32());
+
+				Vector2 from = new(GD.StrToVar(msg["fromX"].ToString()).AsInt32(),
+					GD.StrToVar(msg["fromY"].ToString()).AsInt32());
+				board.MoveAndRecord(to, from);
+				break;
+			case "undo":
+				board.Undo();
+				break;
+			case "reInit":
+				board.ReInit();
+				break;
+		}
+	}
+
+	public void GoHome() {
+		if (global.RPClient.IsOnline()) {
+			global.RPClient.ExitServer();
+		}
+    	global.GotoScene("res://Main.tscn");
+	}
+
+	public void Undo() {
+		GD.PrintErr($"Undo {isSession}");
+		if (isSession == false) {
+			GD.PrintErr($"Undo ??");
+			board.Undo();
+			return;
+		}
+		global.RPClient.SendSessionToAll(global.sessionId, new Dictionary{
+			{"type", "undo"},
+		});
+	}
+
+	public void ReInit() {
+		GD.PrintErr($"ReInit {isSession}");
+		if (isSession == false) {
+			board.ReInit();
+			return;
+		}
+		global.RPClient.SendSessionToAll(global.sessionId, new Dictionary{
+			{"type", "reInit"},
+		});
+	}
+}