feat(重构): 重构棋盘和棋子的逻辑

- 重构了 ChessBoard 和 ChessPiece 类的逻辑
- 添加了新版本的 ChineseChess 库
- 删除了旧版本的 VirtualBoard 和 VirtualPiece 类
- 更新了相关的场景和脚本

Scripts/Controllers/ChessGame.cs

@@ -45,15 +45,18 @@ public partial class ChessGame : Node2D {
 			Game = new(ChessCore.Mode.SingleMode, sideSelf);
 		}
 		board.LoadBoard(Game.board);
-		Game.InitGame();
+		Game.Init();
 
-		Game.board.OnMove += (sender, e) => {
+		Game.board.OnStepsChanged += (sender, e) => {
 			turnSideEdit.Text = Game.GetTurnsType() == ChessCore.TurnsSideType.Red ? "red" : "black";
 		};
 
 		board.OnPosClicked += (sender, pos) => {
+			int posX = (int)pos.X;
+			int posY = (int)pos.Y;
+			Vector.Vector2I vector = new(posX, posY);
 			if (isSession) {
-				Game.OnPosClicked(pos, ChessCore.PlayerSideType.Self);
+				Game.OnPosClicked(vector, ChessCore.PlayerSideType.Self);
 				var res = global.RPClient.SendSessionToAll(global.sessionId, new Dictionary {
 						{"type", "mouseClicked"},
 						{"X", pos.X},
@@ -61,7 +64,7 @@ public partial class ChessGame : Node2D {
 						{"id", global.RPClient.GetUserId()}
 					});
 			} else {
-				Game.OnPosClicked(pos);
+				Game.OnPosClicked(vector);
 			}
 		};
 
@@ -99,7 +102,8 @@ public partial class ChessGame : Node2D {
 				}
 				Vector2 mouseClicked = new(GD.StrToVar(msg["X"].ToString()).AsInt32(),
 					GD.StrToVar(msg["Y"].ToString()).AsInt32());
-				Game.OnPosClicked(mouseClicked, ChessCore.PlayerSideType.Opponent);
+				Vector.Vector2I vector = new((int)mouseClicked.X, (int)mouseClicked.Y);
+				Game.OnPosClicked(vector, ChessCore.PlayerSideType.Opponent);
 				break;
 			case "undo":
 				Game.Undo();
@@ -137,6 +141,7 @@ public partial class ChessGame : Node2D {
 				{"id", global.RPClient.GetUserId()},
 			});
 		} else {
+			if (Game.board.Steps == 0) board.Clear();
 			Game.Undo();
 		}
 	}
@@ -150,6 +155,7 @@ public partial class ChessGame : Node2D {
 			});
 		} else {
 			Game.ReInit();
+			board.Clear();
 		}
 	}
 }