ChessBoard.h

/*
 * Copyright (C)  2019~2020  偕臧  All rights reserved.
 *
 * Author:  xmuli(偕臧) xmulitech@gmail.com
 *
 * GitHub:  https://github.com/XMuli
 * Blogs:   https://ifmet.cn
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/gpl-3.0.html>.
 */
#ifndef CHESSBOARD_H
#define CHESSBOARD_H

/***
 *      ┌─┐       ┌─┐ + +
 *   ┌──┘ ┴───────┘ ┴──┐++
 *   │                 │
 *   │       ───       │++ + + +
 *   ███████───███████ │+
 *   │                 │+
 *   │       ─┴─       │
 *   │                 │
 *   └───┐         ┌───┘
 *       │         │
 *       │         │   + +
 *       │         │
 *       │         └──────────────┐
 *       │                        │
 *       │                        ├─┐
 *       │                        ┌─┘
 *       │                        │
 *       └─┐  ┐  ┌───────┬──┐  ┌──┘  + + + +
 *         │ ─┤ ─┤       │ ─┤ ─┤
 *         └──┴──┘       └──┴──┘  + + + +
 *                神兽保佑
 *               代码无BUG!
 */

#include <QMainWindow>
#include <QFrame>
#include <QPainter>
#include <QPoint>
#include <QMouseEvent>
#include <QTimer>
#include <QTime>
#include <QMessageBox>
#include <QtGlobal>
#include "ChessPieces.h"
#include "AboutAuthor.h"
#include "ChessVoice.h"
#include "ChessStep.h"

namespace Ui {
class ChessBoard;
}

class ChessBoard : public QMainWindow
{
    Q_OBJECT

public:
    explicit ChessBoard(QWidget *parent = 0);
    ~ChessBoard();

    bool isRed(int id);
    bool isDead(int id);
    void killStone(int id);     //吃子
    void reliveStone(int id);   //死者苏生
    void moveStone(int moveid, int row, int col);   //移动棋子
    bool sameColor(int moveId, int killId);  //棋子是否同色
    int getStoneId(int row, int col);
    // 车、炮的功能辅助函数   判断两个点是否在一个直线上面,且返回直线之间的棋子个数
    int  getStoneCountAtLine(int row1, int col1, int row2, int col2);
    void whoWin();  //谁胜谁负
    bool isChecked(QPoint pt, int& row, int& col);   //是否选中该枚棋子。pt为输入参数; row， col为输出参数
    int relation(int row1, int col1, int row2, int col2);    //计算选中的棋子的位置和要移动的位置之间的位置关系
    QPoint getRealPoint(QPoint pt);  // 使mouseMoveEvent取得的坐标同Painter的坐标一致
    bool isGeneral();    //校验将移动后位置是否将死

private:
    bool hongMenFeast();                     // 鸿门宴：对将
    bool havePieces(int row, int col);       // 判断某一格子，是否有棋子
    void reset();  // 胜负已分，重置
    void winMessageBox(QString title, QString msg);

public:
    //视图相关
    QPoint center(int row, int col);         //象棋的棋盘的坐标转换成界面坐标
    QPoint center(int id);
    virtual void paintEvent(QPaintEvent *);      //绘画棋盘
    void drawChessPieces(QPainter& painter, int id);  //绘画单个具体的棋子
    void drawLastStep(QPainter &painter, QVector<ChessStep*>& steps);   //绘制上次移动棋子的起止位置
    void drawTextStep();    //绘制文本棋谱
//    virtual void mousePressEvent(QMouseEvent *);    //鼠标点击事件
//    virtual void clickPieces(int checkedID, int& row, int& col);

    //象棋移动的规则[将  士  象  马  车  炮  兵]
    bool canMove(int moveId, int killId, int row, int col);
    bool canMoveJIANG(int moveId, int killId, int row, int col);
    bool canMoveSHI(int moveId, int killId, int row, int col);
    bool canMoveXIANG(int moveId, int killId, int row, int col);
    bool canMoveMA(int moveId, int killId, int row, int col);
    bool canMoveCHE(int moveId, int killId, int row, int col);
    bool canMovePAO(int moveId, int killId, int row, int col);
    bool canMoveBING(int moveId, int killId, int row, int col);
    bool canSelect(int id);     //是否允许红方或黑方选棋

    void init();

    //移动相关
    virtual void mouseReleaseEvent(QMouseEvent *ev); // 鼠标释放事件
    void click(QPoint pt);  //点击转换像素
    virtual void clickPieces(int id, int row, int col);   //点击选棋
    void trySelectStone(int id);    //尝试选棋
    void tryMoveStone(int killid, int row, int col);    //尝试移动
    void doMoveStone(int moveid, int killid, int row, int col);   //执行移动棋子
    void saveStep(int moveid, int killid, int row, int col, QVector<ChessStep*>& steps);     //保存步数
    QString textStep(int moveid, int row, int col); //文本棋谱

    void backOne();     //悔棋一子
    void back(ChessStep* step);  //悔棋到指定步数
    virtual void back();    //悔棋

    ChessPieces m_ChessPieces[32];  //所有棋子
    QVector<ChessStep*> m_ChessSteps; // 悔棋步数
    ChessVoice m_Chessvoice;  //下棋音效
    int m_nR;          //棋子半径
    int m_nOffSet;     //距离界面的边距
    int m_nD;          //间距为50px
    int m_nSelectID;   //选中棋子[-1:选棋子 || 非-1:走棋子]
    int m_nCheckedID;    //将要被击杀的棋子ID
    bool m_bIsRed;     //是否是红方回合
    bool m_bIsTcpServer;
    bool m_bIsOver; //是否已经游戏结束
    bool m_bIsShowStep; //是否显示步数
    QString textStepRecord; //文本棋谱字符串

private slots:
    void updateTime();
    void on_pushButton_start_clicked();
    void on_pushButton_reset_clicked();
    void on_pushButton_about_clicked();
    void on_pushButton_restart_clicked();
    void on_pushButton_back_clicked();
    void on_pushButton_showStep_clicked();
    void on_pushButton_toMenu_clicked();

private:
    Ui::ChessBoard *ui;

    QTimer * m_timer;      //定时器 每秒更新时间
    QTime * m_timeRecord;  //记录时间
    bool m_bIsStart;        //记录是否已经开始计时
    AboutAuthor* m_pAbout;

signals:
    void toMenu();
};

#endif // CHESSBOARD_H