feat: 重构棋盘逻辑和游戏流程,将引擎版本提升至4.3

- 重构了 VirtualBoard 类，优化了棋盘操作和事件处理
- 重写了 ChessPiece 类，增加了事件处理和虚拟棋子逻辑
- 更新了 ChessGame 控制器，增加了结束回合功能和对话框
- 调整了场景布局和资源引用
- 清理了冗余代码和注释

Scripts/Entities/ChessPiece.cs

@@ -11,42 +11,38 @@ public partial class ChessPiece : Sprite2D {
     private Vector2 textureSize;
 
     private Label labelOfChessName;
+    private VirtualPiece piece;
 
-    private Vector2 arrPos = new Vector2(); // 注意这个坐标的非像素坐标而是棋盘坐标
-
-    public void movePos(Vector2 newPos) {
-        this.arrPos = newPos;
-        this.Position = PosTrans.transArrToPix * newPos;
+    public VirtualPiece GetVirtualPiece() {
+        return piece;
     }
 
-    public Vector2 getPos() {
-      return arrPos;
+    private void OnMove(Vector2 newPos) {
+        Position = PosTrans.transArrToPix * new Vector2(newPos.X, newPos.Y);
+    }
+
+    public void OnSelected(bool isSelected) {
+        if (isSelected) {
+            GD.Print($"{piece.Pos()} is selected");
+            Transform *= transToSeleted;
+        } else {
+            GD.Print($"{piece.Pos()} is deselected");
+            Transform *= transToSeleted.AffineInverse();
+        }
     }
 
-    // 是否被选中
-    public bool isSelected = false;
     Transform2D transToSeleted = new Transform2D(
 		new Vector2(1.2f, 0),
 		new Vector2(0, 1.2f),
 		new Vector2(0, 0)
 	);
 
-    public void Selected() {
-        if (isSelected) {
-            return;
-        }
-        GD.Print($"{arrPos} is selected");
-        this.Transform *= transToSeleted;
-        this.isSelected = true;
-    }
-
-    public void DeSelected() {
-        if (!isSelected) {
-            return;
-        }
-        GD.Print($"{arrPos} is deselected");
-        this.Transform *= transToSeleted.AffineInverse();
-        this.isSelected = false;
+    public ChessPiece(string name = "", Vector2 pos = new Vector2()) {
+        PieceLabel = name;
+        piece = new VirtualPiece(name, pos);
+        piece.OnMove +=  OnMove;
+        piece.OnSelected += OnSelected;
+        piece.data = this;
     }
 
 	// Called when the node enters the scene tree for the first time.
@@ -56,8 +52,8 @@ public partial class ChessPiece : Sprite2D {
 
     private void InitLabel() {
         // this.Texture.ResourcePath = "res://Asserts/ChesspieceBase.tres";
-        this.Texture ??= (Texture2D)ResourceLoader.Load("res://Asserts/ChesspieceBase.tres");
-        textureSize = this.Texture.GetSize();
+        Texture ??= (Texture2D)ResourceLoader.Load("res://Asserts/ChesspieceBase.tres");
+        textureSize = Texture.GetSize();
         Vector2 labalPosition = new(
                 -textureSize.X / 2,
                 -textureSize.Y / 2);
@@ -72,8 +68,4 @@ public partial class ChessPiece : Sprite2D {
         // labelOfChessName.SetAnchorsPreset(Control.LayoutPreset.FullRect);
         AddChild(labelOfChessName);
     }
-
-    interface IVarify {
-        bool CanMove(Vector2 newPosition);
-    }
 }