Javafx实现国际象棋游戏

本文实例为大家分享了Javafx实现国际象棋游戏的具体代码，供大家参考，具体内容如下

基本规则

• 棋子马设计“日”的移动方式
• 兵设计只能向前直走，每次只能走一格。但走第一步时，可以走一格或两格的移动方式
• 请为后设计横、直、斜都可以走，步数不受限制，但不能越子的移动方式。
• 车只能横向或者竖向行走
• 国王是在以自己为中心的九宫格内行走
• 骑士只能走对角线

项目目录结构

UML类图关系

以骑士为例

实现基本功能

• 吃子
• 不能越子
• 游戏结束提示
• 基本移动策略
• 背景音乐

效果

控制器

PressedAction

package com.Exercise3;

import com.Exercise3.Controller.PressedAction;
import com.Exercise3.Controller.ReleaseAction;
import com.Exercise3.Controller.ResetAction;
import com.Exercise3.view.ChessBoard;
import com.Exercise3.view.ChessPane;
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;

import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.stage.Stage;

public class Test extends Application {

 public static void main(String[] args) {
  launch(args);
 }

 @Override
 public void start(Stage primaryStage) {

  String MEDIA_URL = "file:/E:/IdeaProjects/Experiment/src/com/Exercise3/music/BackgroundMusic.mp3";
  ChessBoard chessBoard = ChessBoard.getInstance(100,40,40);

  //添加媒体资源

  Media media = new Media(MEDIA_URL);
  MediaPlayer mediaPlayer = new MediaPlayer(media);
  mediaPlayer.setAutoPlay(true);
  mediaPlayer.setCycleCount(MediaPlayer.INDEFINITE);
  mediaPlayer.play();

  ChessPane pane = new ChessPane(chessBoard);
  pane.setOnMousePressed(new PressedAction(pane,mediaPlayer));

  pane.setOnMouseReleased(new ReleaseAction(pane));

  BorderPane borderPane = new BorderPane();
  borderPane.setCenter(pane);
  HBox hBox = new HBox();
  hBox.setAlignment(Pos.TOP_CENTER);

  Button button = new Button("悔棋");
  button.setOnAction(new ResetAction(pane));

  hBox.getChildren().add(button);
  borderPane.setBottom(hBox);
  Scene scene = new Scene(borderPane,900,900);
  primaryStage.setScene(scene);
  primaryStage.setTitle("国际象棋");
  primaryStage.show();

 }
}

ReleasedAction

package com.Exercise3.Controller;

import com.Exercise3.entity.Piece.ChessPiece;
import com.Exercise3.entity.PieceType;
import com.Exercise3.view.ChessBoard;
import com.Exercise3.view.ChessPane;
import javafx.event.EventHandler;
import javafx.scene.control.Alert;
import javafx.scene.input.MouseEvent;

import java.util.Stack;

public class ReleaseAction implements EventHandler<MouseEvent> {
 private ChessPane chessPane;
 static Stack<ChessPiece> stack = new Stack<>();

 public ReleaseAction(ChessPane chessPane) {
  this.chessPane = chessPane;
 }

 @Override
 public void handle(MouseEvent e) {
  chessPane.drawBoard();
  ChessBoard chessBoard = chessPane.getChessBoard();
  int x = (int) ((e.getX() - chessBoard.getStartX()) / (chessBoard.getCellLength()));
  int y = (int) ((e.getY() - chessBoard.getStartY()) / (chessBoard.getCellLength()));

  for (ChessPiece o : chessPane.getChessPieces()) {
   if (o.isSelected()) {

    System.out.println(o.isSelected()+" "+o.getRow()+" "+o.getCol());
    if (chessBoard.getCurrSide()==o.getSide()){
     if(o.getMoveStrategy().move(x, y,chessPane.getChessPieces())){
      o.setSelected(false);
      if(judgeGame(x,y)){
       printTip(o.getSide());
      }
      eatPiece(x,y);
      stack.push((ChessPiece) o.clone());
      o.setCol(x);
      o.setRow(y);

      chessBoard.changeSide();
     }

    }

    break;
   }

  }

  chessPane.drawPiece();
 }

 public void eatPiece(int x,int y){
  chessPane.getChessPieces().removeIf(e->{
   if(e.getCol()==x&&e.getRow()==y){
    stack.push(e);
    return true;
   }
   return false;
  });
 }

 public boolean judgeGame(int x,int y){
  for(ChessPiece e:chessPane.getChessPieces()){
   if(e.getCol()==x&&e.getRow()==y&&(
     e.getType()== PieceType.KINGBLACK||e.getType()==PieceType.KINGWHITE))
    return true;
  }

  return false;
 }

 public void printTip(char side){
  Alert alert = new Alert(Alert.AlertType.INFORMATION);
  alert.setContentText((side=='B'?"黑":"白")+"方取得胜利");
  alert.setTitle("游戏结束");
  alert.showAndWait();
 }

}

ResetAction

package com.Exercise3.Controller;

import com.Exercise3.entity.Piece.ChessPiece;
import com.Exercise3.view.ChessPane;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;

import java.util.Stack;

public class ResetAction implements EventHandler<ActionEvent>{
 private ChessPane chessPane;
 public ResetAction(ChessPane chessPane) {
  this.chessPane = chessPane;
 }

 @Override
 public void handle(ActionEvent e) {
  Stack<ChessPiece> stack = ReleaseAction.stack;
  if(!stack.empty()){
   chessPane.getChessPieces().removeIf(o->o.equals(stack.peek()));//去除原来的棋子
   chessPane.getChessPieces().add(stack.pop());//将以前压入堆栈的棋子重新加入

   chessPane.drawBoard();
   chessPane.drawPiece();
  }
 }
}

实体

棋子

ChessPiece

package com.Exercise3.entity.Piece;

import com.Exercise3.entity.PieceType;
import com.Exercise3.entity.Strategy.CarStrategy;

public class Car extends ChessPiece {
 public Car(PieceType type, int row, int col) {
  super(type, row, col);
  setMoveStrategy(new CarStrategy(getCol(),getRow()));
 }
}

Car

package com.Exercise3.entity.Piece;

import com.Exercise3.entity.PieceType;
import com.Exercise3.entity.Strategy.CarStrategy;

public class Car extends ChessPiece {
 public Car(PieceType type, int row, int col) {
  super(type, row, col);
  setMoveStrategy(new CarStrategy(getCol(),getRow()));
 }
}

Horse

package com.Exercise3.entity.Piece;

import com.Exercise3.entity.PieceType;
import com.Exercise3.entity.Strategy.HorseStategy;

public class Horse extends ChessPiece{
 public Horse(PieceType type, int row, int col) {
  super(type, row, col);
  setMoveStrategy(new HorseStategy(getCol(),getRow()));
 }
}

King

package com.Exercise3.entity.Piece;

import com.Exercise3.entity.PieceType;
import com.Exercise3.entity.Strategy.KingStrategy;

public class King extends ChessPiece {
 public King(PieceType type, int row, int col) {
  super(type, row, col);
  setMoveStrategy(new KingStrategy(getCol(),getRow()));
 }
}

Knight

package com.Exercise3.entity.Piece;

import com.Exercise3.entity.PieceType;
import com.Exercise3.entity.Strategy.KnightStrategy;

public class Knight extends ChessPiece {
 public Knight(PieceType type, int row, int col) {
  super(type, row, col);
  setMoveStrategy(new KnightStrategy(getCol(),getRow()));
 }
}

Queen

package com.Exercise3.entity.Piece;

import com.Exercise3.entity.PieceType;
import com.Exercise3.entity.Strategy.QueenStrategy;

public class Queen extends ChessPiece {
 public Queen(PieceType type, int row, int col) {
  super(type, row, col);
  setMoveStrategy(new QueenStrategy(getCol(),getRow()));
 }
}

Soldier

package com.Exercise3.entity.Piece;

import com.Exercise3.entity.PieceType;
import com.Exercise3.entity.Strategy.SoldierStategy;

public class Soldier extends ChessPiece{
 public Soldier(PieceType type, int row, int col) {
  super(type, row, col);
  setMoveStrategy(new SoldierStategy(getCol(),getRow(),getSide()));
 }

}

移动策略

MoveStategy

package com.Exercise3.entity.Strategy;

import com.Exercise3.entity.Piece.ChessPiece;

import java.util.Set;

public interface MoveStrategy {
 boolean move(int x, int y, Set<ChessPiece> chessPieces);
}

CarStrategy

package com.Exercise3.entity.Strategy;

import com.Exercise3.entity.Piece.ChessPiece;

import java.util.List;
import java.util.Set;

public class CarStrategy implements MoveStrategy {
 private int curX;
 private int curY;

 public CarStrategy() {
 }

 public CarStrategy(int curX, int curY) {
  this.curX = curX;
  this.curY = curY;
 }

 public boolean move(int x, int y, Set<ChessPiece> chessPieces) {
  if(x!=curX&&y!=curY)
   return false;
  if(isOverPiece(Math.min(curX,x),Math.min(curY,y),
    Math.max(curX,x),Math.max(curY,y),chessPieces))
   return false;
  curX = x;
  curY = y;
  return true;
 }

 public static boolean isOverPiece(int stX,int stY,int edX,int edY,Set<ChessPiece> chessPieces){
  for(ChessPiece e:chessPieces)
   if((e.getRow()>stY&&e.getRow()<edY)&&e.getCol()==stX||
     (e.getCol()>stX&&e.getCol()<edX&&e.getRow()==stY))
    return true;
  return false;
 }

 public int getCurX() {
  return curX;
 }

 public void setCurX(int curX) {
  this.curX = curX;
 }

 public int getCurY() {
  return curY;
 }

 public void setCurY(int curY) {
  this.curY = curY;
 }
}

HorseStrategy

package com.Exercise3.entity.Strategy;

import com.Exercise3.entity.Piece.ChessPiece;

import java.util.List;
import java.util.Set;

public class HorseStategy implements MoveStrategy{
 private int curX;
 private int curY;

 public HorseStategy(int curX, int curY) {
  this.curX = curX;
  this.curY = curY;
 }

 @Override
 public boolean move(int x, int y, Set<ChessPiece> chessPieces) {
  if((Math.abs(curX-x)==1&&Math.abs(curY-y)==2)||
    (Math.abs(curX-x)==2&&Math.abs(curY-y)==1)){
   curX = x;
   curY = y;
   return true;
  }
  return false;
 }

 public int getCurX() {
  return curX;
 }

 public void setCurX(int curX) {
  this.curX = curX;
 }

 public int getCurY() {
  return curY;
 }

 public void setCurY(int curY) {
  this.curY = curY;
 }
}

KingStrategy

package com.Exercise3.entity.Strategy;

import com.Exercise3.entity.Piece.ChessPiece;

import java.util.List;
import java.util.Set;

public class KingStrategy implements MoveStrategy {
 private int curX;
 private int curY;

 public KingStrategy(int curX, int cuY) {
  this.curX = curX;
  this.curY = cuY;
 }

 @Override
 public boolean move(int x, int y, Set<ChessPiece> chessPieces) {
  if(Math.abs(curX-x)<=1&&Math.abs(curY-y)<=1){
   curX = x;
   curY = y;
   return true;
  }

  return false;
 }

 public int getCurX() {
  return curX;
 }

 public void setCurX(int curX) {
  this.curX = curX;
 }

 public int getCurY() {
  return curY;
 }

 public void setCurY(int curY) {
  this.curY = curY;
 }
}

KnightStrage

package com.Exercise3.entity.Strategy;

import com.Exercise3.entity.Piece.ChessPiece;

import java.util.List;
import java.util.Map;
import java.util.Set;

public class KnightStrategy implements MoveStrategy {
 private int curX;
 private int curY;

 public KnightStrategy(int curX, int curY) {
  this.curX = curX;
  this.curY = curY;
 }

 @Override
 public boolean move(int x, int y, Set<ChessPiece> chessPieces) {
  if(Math.abs(x-curX)==Math.abs(y-curY)){
   if(isOverPiece(Math.min(curX,x),Math.min(curY,y),
     Math.max(curX,x),Math.max(curY,y),chessPieces))
    return false;
   curX=x;
   curY=y;
   return true;
  }
  return false;
 }

 public static boolean isOverPiece(int stX,int stY,int edX,int edY,Set<ChessPiece> chessPieces){
  for(ChessPiece e:chessPieces){
   if(e.getCol()-stX==edX-e.getCol()&&edY-e.getRow()==e.getRow()-stY){
    System.out.println(e.isSelected()+" "+e.getRow()+" "+e.getCol());
    return true;
   }
  }

  return false;
 }
 public int getCurX() {
  return curX;
 }

 public void setCurX(int curX) {
  this.curX = curX;
 }

 public int getCurY() {
  return curY;
 }

 public void setCurY(int curY) {
  this.curY = curY;
 }
}

QueeStrategy

package com.Exercise3.entity.Strategy;

import com.Exercise3.entity.Piece.ChessPiece;

import java.util.List;
import java.util.Set;

public class QueenStrategy implements MoveStrategy{
 private int curX;
 private int curY;

 public QueenStrategy(int curX, int curY) {
  this.curX = curX;
  this.curY = curY;
 }

 @Override
 public boolean move (int x, int y, Set<ChessPiece> chessPieces) {
  if(Math.abs(x-curX)==Math.abs(y-curY)||!(x!=curX&&y!=curY)){
   if(isOverPiece(Math.min(curX,x),Math.min(curY,y),
     Math.max(curX,x),Math.max(curY,y),chessPieces))
    return false;
   curX = x;
   curY = y;
   return true;
  }
  return false;
 }

 public boolean isOverPiece (int stX,int stY,int edX,int edY,Set<ChessPiece> chessPieces) {
  for(ChessPiece e:chessPieces){
   if(e.getRow()!=stY&&e.getCol()!=stX){
    return KnightStrategy.isOverPiece(stX,stY,edX,edY,chessPieces);
   }
   else{
    return CarStrategy.isOverPiece(stX,stY,edX,edY,chessPieces);
   }
  }
  return false;
 }

 public int getCurX() {
  return curX;
 }

 public void setCurX(int curX) {
  this.curX = curX;
 }

 public int getCurY() {
  return curY;
 }

 public void setCurY(int curY) {
  this.curY = curY;
 }
}

SoldierStrategy

package com.Exercise3.entity.Strategy;

import com.Exercise3.entity.Piece.ChessPiece;

import java.util.List;
import java.util.Set;

public class SoldierStategy implements MoveStrategy{
 private int curX;
 private int curY;
 private char side;
 private boolean firstMove = true;

 public SoldierStategy(int curX, int curY,char side) {
  this.curX = curX;
  this.curY = curY;
  this.side = side;
 }

 @Override
 public boolean move(int x, int y, Set<ChessPiece> chessPieces) {
  //直线移动
  if(curY==y){
   switch (side){
    case 'B': {
     if(isFirstMove()&&(x==curX+1||curX+2==x)){
      setFirstMove(false);
      curY = y;
      curX = x;
      return true;
     }
     else if(!isFirstMove()&&curX+1==x){
      curY = y;
      curX = x;
      return true;
     }
     break;
    }

    case 'W':{
     if(isFirstMove()&&(x==curX-1||x==curX-2)){
      setFirstMove(false);
      curY = y;
      curX = x;
      return true;
     }
     else if(!isFirstMove()&&curX-1==x){
      curY = y;
      curX = x;
      return true;
     }
     break;
    }
   }
  }

  //吃子移动
  for(ChessPiece e:chessPieces){
   if(Math.abs(e.getRow()-curY)==1){
    if(e.getCol()-curX==1&&e.getSide()=='W'||
    curX-e.getCol()==1&&e.getSide()=='B'){
     curY = y;
     curX = x;
     return true;
    }

   }
  }

  return false;
 }

 public boolean isFirstMove() {
  return firstMove;
 }

 public void setFirstMove(boolean firstMove) {
  this.firstMove = firstMove;
 }

 public int getCurX() {
  return curX;
 }

 public void setCurX(int curX) {
  this.curX = curX;
 }

 public int getCurY() {
  return curY;
 }

 public void setCurY(int curY) {
  this.curY = curY;
 }
}

棋子类型

package com.Exercise3.entity;

public enum PieceType {
 KINGBLACK("KingBlack","com/Exercise3/img/KingBlack.jpg"),
 QUEENBLACK("QueenBlack","com/Exercise3/img/QueenBlack.jpg"),
 CARBLACK("CarBlack","com/Exercise3/img/CarBlack.jpg"),
 HORSEBLACK("HorseBlack","com/Exercise3/img/HorseBlack.jpg"),
 SOLDIERBLACK("SoldierBlack","com/Exercise3/img/SoldierBlack.jpg"),
 KNIGHTBLACK("KnightBlack","com/Exercise3/img/KnightBlack.jpg"),

 KINGWHITE("KingWhite","com/Exercise3/img/KingWhite.jpg"),
 QUEENWHITE("QueenWhite","com/Exercise3/img/QueenWhite.jpg"),
 CARWHITE("CarWhite","com/Exercise3/img/CarWhite.jpg"),
 HORSEWHITE("HorseWhite","com/Exercise3/img/HorseWhite.jpg"),
 SOLDIERWHITE("SoldierWhite","com/Exercise3/img/SoldierWhite.jpg"),
 KNIGHTWHITE("KnightWhite","com/Exercise3/img/KnightWhite.jpg");

 private String desc;
 private PieceType(String desc,String url ){
  this.desc = desc;
  this.url = url;
 }

 private String url;

 public String getDesc(){
  return desc;
 }

 public String getUrl() {
  return url;
 }
}

视图

package com.Exercise3.view;

public class ChessBoard {
 static ChessBoard chessBoard = null;
 private int row;
 private int col;
 private double cellLength;
 private double startX;
 private double startY;
 private char currSide;

 private ChessBoard(double cellLength, double startX, double startY) {
  this.row = 8;
  this.col = 8;
  this.cellLength = cellLength;
  this.startX = startX;
  this.startY = startY;
  this.currSide = 'B';
 }

 public static ChessBoard getInstance(double cellLength, double startX, double startY){
  if(chessBoard == null)
   return new ChessBoard(cellLength,startX,startY);
  return chessBoard;
 }

 public ChessBoard getInstance(){
  return chessBoard;
 }

 public int getCol() {
  return col;
 }

 public int getRow() {
  return row;
 }

 public double getCellLength() {
  return cellLength;
 }

 public void changeSide(){
  currSide=(currSide=='B'?'W':'B');
 }

 public void setCellLength(double cellLength) {
  this.cellLength = cellLength;
 }

 public double getStartX() {
  return startX;
 }

 public void setStartX(double startX) {
  this.startX = startX;
 }

 public double getStartY() {
  return startY;
 }

 public void setStartY(double startY) {
  this.startY = startY;
 }

 public char getCurrSide() {
  return currSide;
 }
}

package com.Exercise3.view;

import com.Exercise3.entity.Piece.*;
import com.Exercise3.entity.PieceType;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.image.*;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;

import java.util.*;

public class ChessPane extends Pane {
 private Set<ChessPiece> chessPieces;
 private ChessBoard chessBoard;
 private Canvas canvas;
 private GraphicsContext gc;

 public ChessPane(ChessBoard chessBoard) {
  this.chessBoard = chessBoard;
  setChessPiece();
  canvas = new Canvas(900,900);
  gc = canvas.getGraphicsContext2D();
  draw();
 }

 public void draw(){
  drawBoard();
  drawPiece();
  getChildren().add(canvas);
 }

 public void drawBoard(){
  gc.clearRect(0,0,900,900);
  double x = chessBoard.getStartX();
  double y = chessBoard.getStartY();
  double cell = chessBoard.getCellLength();

  boolean flag = false;
  for(int i=0;i<chessBoard.getRow();i++){
   flag = !flag;
   for(int j=0;j<chessBoard.getCol();j++){
    gc.setFill(flag? Color.valueOf("#EDEDED"):Color.valueOf("CDC5BF"));
    gc.fillRect(x+j*cell,y+i*cell,cell,cell);
    flag = !flag;
   }
  }

  gc.setStroke(Color.GRAY);
  gc.strokeRect(x,y,cell*chessBoard.getCol(),cell*chessBoard.getRow());

 }

 public void drawPiece(){
  double cell = chessBoard.getCellLength();
  chessPieces.forEach( e->{
   if(e.isSelected()){
    gc.setFill(Color.valueOf("#6495ED"));
    gc.fillRect(chessBoard.getStartX()+e.getCol()*cell,
      chessBoard.getStartY()+e.getRow()*cell,
      cell,cell);
   }

   Image image = new Image(e.getType().getUrl());
   gc.drawImage(image,
     chessBoard.getStartX()+10 + e.getCol() * cell,
     chessBoard.getStartY()+10 + e.getRow() * cell,
     cell-20, cell-20);
  });
 }

 //加入棋子
 public void setChessPiece() {
  chessPieces = new HashSet<>();
  chessPieces.add(new Car(PieceType.CARBLACK,0,0));
  chessPieces.add(new Horse(PieceType.HORSEBLACK,1,0));
  chessPieces.add(new Knight(PieceType.KNIGHTBLACK,2,0));
  chessPieces.add(new King(PieceType.KINGBLACK,3,0));
  chessPieces.add(new Queen(PieceType.QUEENBLACK,4,0));
  chessPieces.add(new Knight(PieceType.KNIGHTBLACK,5,0));
  chessPieces.add(new Horse(PieceType.HORSEBLACK,6,0));
  chessPieces.add(new Car(PieceType.CARBLACK,7,0));
  for(int i=0;i<8;i++){
   chessPieces.add(new Soldier(PieceType.SOLDIERBLACK,i,1));
  }

  chessPieces.add(new Car(PieceType.CARWHITE,0,7));
  chessPieces.add(new Horse(PieceType.HORSEWHITE,1,7));
  chessPieces.add(new Knight(PieceType.KNIGHTWHITE,2,7));
  chessPieces.add(new King(PieceType.KINGWHITE,3,7));
  chessPieces.add(new Queen(PieceType.QUEENWHITE,4,7));
  chessPieces.add(new Knight(PieceType.KNIGHTWHITE,5,7));
  chessPieces.add(new Horse(PieceType.HORSEWHITE,6,7));
  chessPieces.add(new Car(PieceType.CARWHITE,7,7));
  for(int i=0;i<8;i++){
   chessPieces.add(new Soldier(PieceType.SOLDIERWHITE,i,6));
  }
 }

 public ChessBoard getChessBoard() {
  return chessBoard;
 }

 public void setChessBoard(ChessBoard chessBoard) {
  this.chessBoard = chessBoard;
 }

 public Set<ChessPiece> getChessPieces() {
  return chessPieces;
 }

 public void setChessPieces(Set<ChessPiece> chessPieces) {
  this.chessPieces = chessPieces;
 }

 public Canvas getCanvas() {
  return canvas;
 }

 public void setCanvas(Canvas canvas) {
  this.canvas = canvas;
 }

 public GraphicsContext getGc() {
  return gc;
 }

 public void setGc(GraphicsContext gc) {
  this.gc = gc;
 }
}

测试

package com.Exercise3;

import com.Exercise3.Controller.PressedAction;
import com.Exercise3.Controller.ReleaseAction;
import com.Exercise3.Controller.ResetAction;
import com.Exercise3.view.ChessBoard;
import com.Exercise3.view.ChessPane;
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;

import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.stage.Stage;

public class Test extends Application {

 public static void main(String[] args) {
  launch(args);
 }

 @Override
 public void start(Stage primaryStage) {

  String MEDIA_URL = "file:/E:/IdeaProjects/Experiment/src/com/Exercise3/music/BackgroundMusic.mp3";
  ChessBoard chessBoard = ChessBoard.getInstance(100,40,40);

  //添加媒体资源

  Media media = new Media(MEDIA_URL);
  MediaPlayer mediaPlayer = new MediaPlayer(media);
  mediaPlayer.setAutoPlay(true);
  mediaPlayer.setCycleCount(MediaPlayer.INDEFINITE);
  mediaPlayer.play();

  ChessPane pane = new ChessPane(chessBoard);
  pane.setOnMousePressed(new PressedAction(pane,mediaPlayer));

  pane.setOnMouseReleased(new ReleaseAction(pane));

  BorderPane borderPane = new BorderPane();
  borderPane.setCenter(pane);
  HBox hBox = new HBox();
  hBox.setAlignment(Pos.TOP_CENTER);

  Button button = new Button("悔棋");
  button.setOnAction(new ResetAction(pane));

  hBox.getChildren().add(button);
  borderPane.setBottom(hBox);
  Scene scene = new Scene(borderPane,900,900);
  primaryStage.setScene(scene);
  primaryStage.setTitle("国际象棋");
  primaryStage.show();

 }
}

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