《C++ Qt 设计模式》8|15拼图 小游戏的简单实现.拜托,别乱点!

void    addWidget ( QWidget * widget, int row, int column, Qt::Alignment alignment = 0 )

#ifndef MYBUTTON_H #define MYBUTTON_H  #include <QPushButton>   struct Coord {     int x;     int y; };   class MyButton : public QPushButton {     Q_OBJECT  private:     Coord m_coord;  public:     explicit MyButton(char c,Coord coord,QWidget* parent=0);     void setCoord(Coord newCd);     Coord getCoord() const;  signals:     void myClick(MyButton* p);  //signal,argument is poiter to myself,so someone else can identify me  private slots:     void btClicked(); };  #endif // MYBUTTON_Hmybutton.h

#include "mybutton.h"  #include <QMessageBox>  MyButton::MyButton(char c,Coord coord, QWidget *parent) : QPushButton(parent) {      setText(QString("%1").arg(c));     this->m_coord=coord;     connect(this,SIGNAL(clicked()),this,SLOT(btClicked())); }  void MyButton::setCoord(Coord newCd) {     m_coord=newCd; }  Coord MyButton::getCoord() const {     return m_coord; }   void MyButton::btClicked() {     emit myClick(this); }
mybutton.cpp

 connect(this,SIGNAL(clicked()),this,SLOT(btClicked()));void MyButton::btClicked(){    emit myClick(this);}

#ifndef DIALOG_H #define DIALOG_H  #include <QDialog> #include "mybutton.h"  class QGridLayout; class QPushButton;  namespace Ui { class Dialog; }  class Dialog : public QDialog {     Q_OBJECT  public:     explicit Dialog(QWidget *parent = 0);     ~Dialog();  private:     Ui::Dialog *ui;      static const int N=3;     QGridLayout* m_lay;     MyButton* m_pbArr[N][N];     QString m_btnTextOrder; private slots:     void btClicked(MyButton* p);   //one of N*N buttons has been clicked  private:     void disorder();    //disorder the N*N buttons     void exchangeButton(Coord a,Coord b);    //exchange two buttons based on coord     bool isOver() const; //is it in order??? };  #endif // DIALOG_H
dialog.h

Dialog::Dialog(QWidget *parent) :     QDialog(parent),     ui(new Ui::Dialog) {     ui->setupUi(this);     setWindowTitle("Let us have a game!");     setMinimumSize(300,250);     setMaximumSize(300,250);      m_lay=new QGridLayout(this);      for(int i=0;i<N;i++)     {         int colums;         if(i<N-1) colums=N;         else colums=N-1;          for(int j=0;j<colums;j++)         {             char c=i*N+j+'A';             m_btnTextOrder.append(c);              Coord cd={i,j};             m_pbArr[i][j]=new MyButton(c,cd);              m_lay->addWidget(m_pbArr[i][j],i,j);             connect(m_pbArr[i][j],SIGNAL(myClick(MyButton*)),this,SLOT(btClicked(MyButton*)));         }     }     m_pbArr[N-1][N-1]=NULL;     this->setLayout(m_lay);      disorder(); //make buttons disorder }
构造函数

void Dialog::btClicked(MyButton* p) {     Coord cd=p->getCoord(); //get the button that been clicked     Coord cdTarget=cd; //target position that maybe switch      if((cd.x-1>=0)&&(m_pbArr[cd.x-1][cd.y]==NULL))  //test top     {         cdTarget.x--;     }     else if((cd.x+1<N)&&(m_pbArr[cd.x+1][cd.y]==NULL))  //test down     {         cdTarget.x++;     }     else if((cd.y-1>=0)&&(m_pbArr[cd.x][cd.y-1]==NULL))   //test left     {         cdTarget.y--;     }     else if((cd.y+1<N)&&(m_pbArr[cd.x][cd.y+1]==NULL))  //test right     {         cdTarget.y++;     }     else     {         return; //can not move this button     }      /*let us switch!*/     exchangeButton(cd,cdTarget);      /*check whether game is over*/     if(isOver())     {         QMessageBox::warning(this,"Sucess","You made it! Congratulations!");     } }

void Dialog::exchangeButton(Coord a, Coord b) {     if((m_pbArr[a.x][a.y]!=NULL)&&(m_pbArr[b.x][b.y]!=NULL))    //no NULL     {         /*remove from pre QGridLayOut*/         m_lay->removeWidget(m_pbArr[a.x][a.y]);         m_lay->removeWidget(m_pbArr[b.x][b.y]);          /*add to QGridLayOut*/         m_lay->addWidget(m_pbArr[a.x][a.y],b.x,b.y);         m_lay->addWidget(m_pbArr[b.x][b.y],a.x,a.y);          /*change two buttons's coord */         m_pbArr[a.x][a.y]->setCoord(b);         m_pbArr[b.x][b.y]->setCoord(a);          /*exchange poiter in m_pbArr[] */         MyButton* temp=m_pbArr[a.x][a.y];         m_pbArr[a.x][a.y]=m_pbArr[b.x][b.y];         m_pbArr[b.x][b.y]=temp;     }     else    //one of two buttons' position is NULL (in array m_pbArr[])     {         if(m_pbArr[a.x][a.y]==NULL)         {             Coord temp=a;             a=b;             b=temp;         }          /*here,we can make sure that coord b is null*/         m_lay->removeWidget(m_pbArr[a.x][a.y]);         m_lay->addWidget(m_pbArr[a.x][a.y],b.x,b.y);         m_pbArr[a.x][a.y]->setCoord(b);         MyButton* temp=m_pbArr[a.x][a.y];         m_pbArr[a.x][a.y]=m_pbArr[b.x][b.y];         m_pbArr[b.x][b.y]=temp;     } }
交换按钮

void Dialog::disorder() {     Coord cdA,cdB;     for(int i=0;i<56;i++)     {         QTime time=QTime::currentTime();         qsrand(time.msec()*7+time.second()*245);         cdA.x=qrand()%N; //from 0 to N-1         qsrand(time.second()+i*3+91);         cdA.y=qrand()%N;          qsrand(time.msec()*3+i);         cdB.x=qrand()%N;         qsrand(time.msec()+i*11);         cdB.y=qrand()%N;      //    qDebug()<<cdA.x<<cdA.y<<"-----"<<cdB.x<<cdB.y<<endl;         if((cdA.x==cdB.x)&&(cdA.y==cdB.y))         {             i--;         }         else    //not the same coord         {             exchangeButton(cdA,cdB);         }     } }
无序化

bool Dialog::isOver() const {     QString res;     for(int i=0;i<N;i++)     {         for(int j=0;j<N;j++)         {             if(m_pbArr[i][j]!=NULL)             {                 res.append(m_pbArr[i][j]->text());             }         }     }      if(res==m_btnTextOrder)     {         return true;     }     else     {         return false;     } }
是否结束