基于QT实现贪吃蛇小游戏

#include "gamewidget.h" #include"widget.h" #include<QDebug> int Gamewidget::m_setDiretion=4; Gamewidget::Gamewidget(QWidget *parent) : QWidget(parent) { qsrand(time(NULL));//随机数的种子 Score=0; Difficulty=1; this->setAutoFillBackground(true);//设置父窗口背景可被覆盖填充 this->resize(891,510); this->setWindowTitle("李子的贪吃蛇"); this->setWindowIcon(QIcon(":/Picture/img/WindowPicture.jpg")); QPalette palette; palette.setBrush(QPalette::Background,QBrush(QPixmap(":/new/Gamewindow/img/GameBack.jpg").scaled(this->size()))); this->setPalette(palette); upPush =new QPushButton(this); downPush=new QPushButton(this); leftPush=new QPushButton(this); rightPush=new QPushButton(this); StartPush=new QPushButton(this); ExitPush=new QPushButton(this); buttonGroup=new QButtonGroup(this); buttonGroup->addButton(upPush,1); buttonGroup->addButton(downPush,2); buttonGroup->addButton(leftPush,3); buttonGroup->addButton(rightPush,4); connect(buttonGroup,SIGNAL(buttonClicked(int)),this,SLOT(M_setDiretion(int))); upPush->setIconSize(QSize(45,90)); upPush->setGeometry(750,160,45,90); upPush->setIcon(QIcon(":/new/Gamewindow/img/up.png")); upPush->setFlat(1); downPush->setIconSize(QSize(45,90)); downPush->setGeometry(750,260,45,90); downPush->setIcon(QIcon(":/new/Gamewindow/img/down.png")); downPush->setFlat(1); leftPush->setIconSize(QSize(90,45)); leftPush->setGeometry(650,230,90,45); leftPush->setIcon(QIcon(":/new/Gamewindow/img/left.png")); leftPush->setFlat(1); rightPush->setIconSize(QSize(90,45)); rightPush->setGeometry(800,230,90,45); rightPush->setIcon(QIcon(":/new/Gamewindow/img/right.png")); rightPush->setFlat(1); StartPush->setIconSize(QSize(90,45)); StartPush->setGeometry(650,400,90,45); StartPush->setFlat(1); StartPush->setIcon(QIcon(":/Picture/img/Start.png")); ExitPush->setIconSize(QSize(90,45)); ExitPush->setGeometry(780,400,90,45); ExitPush->setIcon(QIcon(":/Picture/img/Exit.png")); ExitPush->setFlat(1); ScoreLabel=new QLabel(this); LevelLabel=new QLabel(this); ScoreLabel->setText("Score:"); ScoreLabel->setGeometry(690,10,120,90); LevelLabel->setText("Level:"); LevelLabel->setGeometry(690,50,120,90); ScoreLabelNumber=new QLabel(this); LevelLabelNumber=new QLabel(this); ScoreLabelNumber->setText(QString::number(Score)+"分"); ScoreLabelNumber->setGeometry(750,10,120,90); LevelLabelNumber->setText(QString::number(Difficulty)+"级"); LevelLabelNumber->setGeometry(750,50,120,90); Timer=new QTimer(this); connect(Timer,SIGNAL(timeout()),this,SLOT(M_timeout())); connect(StartPush,SIGNAL(clicked(bool)),this,SLOT(M_startPush())); connect(ExitPush,SIGNAL(clicked(bool)),this,SLOT(M_exitPush())); snake[0][0]=(rand()%18+1)*30+30; snake[0][1]=(rand()%15+1)*30+30; m_setDiretion=(rand()%4)+1; foodx=(rand()%20)*30; foody=(rand()%15)*30; bodycount=1; //包含蛇的头和尾巴 Nobite=true; this->repaint(); } void Gamewidget::keyPressEvent(QKeyEvent *e)//按键处理 { switch(e->key()) { case Qt::Key_Up:if(m_setDiretion!=2)m_setDiretion=1; break; case Qt::Key_W:if(m_setDiretion!=2)m_setDiretion=1; break; case Qt::Key_Down:if(m_setDiretion!=1)m_setDiretion=2; break; case Qt::Key_S:if(m_setDiretion!=1)m_setDiretion=2; break; case Qt::Key_Left:if(m_setDiretion!=4)m_setDiretion=3; break; case Qt::Key_A:if(m_setDiretion!=4)m_setDiretion=3; break; case Qt::Key_Right:if(m_setDiretion!=3)m_setDiretion=4; break; case Qt::Key_D:if(m_setDiretion!=3)m_setDiretion=4; break; default: break; } } void Gamewidget::paintEvent(QPaintEvent*)//绘图事件 { QPainter painter(this); if(0<=snake[0][0]&&snake[0][0]<=600&&0<=snake[0][1]&&snake[0][1]<=480&&Nobite) { qDebug()<<snake[0][0]; for(int i=bodycount;i>0;i--) { if(i==bodycount)//画出尾巴部分 { if(snake[i][0]==snake[i-1][0]&&snake[i][1]<snake[i-1][1]) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/taildown.png")); } else if(snake[i][0]==snake[i-1][0]&&snake[i][1]>snake[i-1][1]) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/tailup.png")); } else if(snake[i][0]<snake[i-1][0]&&snake[i][1]==snake[i-1][1]) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/tailright.png")); } else if(snake[i][0]>snake[i-1][0]&&snake[i][1]==snake[i-1][1]) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/tailleft.png")); } } else { if((snake[i][0]==snake[i-1][0]&& snake[i][1]<snake[i-1][1]&&snake[i+1][0]<snake[i][0]&&snake[i+1][1]==snake[i][1])|| ((snake[i][0]>snake[i-1][0])&& snake[i][1]==snake[i-1][1]&&snake[i+1][0]==snake[i][0]&&snake[i+1][1]>snake[i][1])) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/leftdown.png")); } else if((snake[i][0]<snake[i-1][0]&& snake[i][1]==snake[i-1][1]&&snake[i+1][0]==snake[i][0]&&snake[i+1][1]>snake[i][1])|| (snake[i][0]==snake[i-1][0]&& snake[i][1]<snake[i-1][1]&&snake[i+1][0]>snake[i][0]&&snake[i+1][1]==snake[i][1])) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/rightdown.png")); } else if((snake[i][0]>snake[i-1][0]&& snake[i][1]==snake[i-1][1]&&snake[i+1][0]==snake[i][0]&&snake[i+1][1]<snake[i][1])|| (snake[i][0]==snake[i-1][0]&& snake[i][1]>snake[i-1][1]&&snake[i+1][0]<snake[i][0]&&snake[i+1][1]==snake[i][1])) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/leftup.png")); } else if(((snake[i][0]==snake[i-1][0])&& snake[i][1]>snake[i-1][1]&&snake[i+1][0]>snake[i][0]&&snake[i+1][1]==snake[i][1])|| (snake[i][0]<snake[i-1][0]&& snake[i][1]==snake[i-1][1]&&snake[i+1][0]==snake[i][0]&&snake[i+1][1]<snake[i][1])) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/rightup.png")); } else if((snake[i][0]==snake[i-1][0]&&snake[i][0]==snake[i+1][0])&&((snake[i][1]<snake[i-1][1]&&snake[i+1][1]<snake[i][1])|| (snake[i][1]>snake[i-1][1]&&snake[i+1][1]>snake[i][1]))) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/downup.png")); } else if ((snake[i][1]==snake[i-1][1]&&snake[i][1]==snake[i+1][1])&&((snake[i][0]<snake[i-1][0]&&snake[i+1][0]<snake[i][0])|| (snake[i][0]>snake[i-1][0]&&snake[i+1][0]>snake[i][0]))) { painter.drawImage(QRect(snake[i][0],snake[i][1],30,30),QImage(":/new/Gamewindow/img/leftright.png")); } } } } painter.drawImage(QRect(foodx,foody,30,30),QImage(":/new/Gamewindow/img/Apple