PyQt5实现类似别踩白块游戏

#引入可能用到的库from PyQt5.QtWidgets import (QWidget, QApplication,QPushButton,QMessageBox,QLabel,QDesktopWidget,QMainWindow)from PyQt5.QtCore import Qt,QRect,QSize,QPoint,QTimerfrom PyQt5.QtGui import QPainter, QFont, QColor, QPen,QIcon,QBrushimport sysimport random class mainForm(QMainWindow): def __init__(self):   super().__init__()  self.initUI()  self.show()  def initUI(self):   self.setWindowTitle("Step Game")  self.setGeometry(0,0,520,360)  self.setWindowIcon(QIcon(R"Doraemon.ico"))  self.center()   self.myBoard=board()  self.myBoard.resize(500,400)  self.myBoard.move(10,10)  self.myBoard.setParent(self)  def center(self):   frame=self.frameGeometry()  availableCenter=QDesktopWidget().availableGeometry().center()  frame.moveCenter(availableCenter)  self.move(frame.topLeft())  class board(QWidget):  def __init__(self):  super().__init__()  self.initUI()  self.initPath()  self.isStarted=False def initUI(self):   _font=QFont("Roman times",16,QFont.Bold)   self.tipLabel=QLabel("加油！",self)  self.tipLabel.setFont(_font)  self.tipLabel.move(300,310)   self.timingLabel=QLabel("0S",self)  self.timingLabel.move(200,310)  self.timingLabel.setFont(_font)   self.startButton=QPushButton("开始",self)  self.startButton.setFont(_font)  self.startButton.move(20,310)  self.startButton.clicked.connect(self.start)   self.costTimer=QTimer()  self.costTimer.timeout.connect(self.tick)   self.myPainter = QPainter()  #让这个整个控件获得焦点  self.setFocusPolicy(Qt.StrongFocus)  #为了不让按钮获得焦点  self.startButton.setFocusPolicy(Qt.NoFocus)  def initPath(self):   self.queue=[[0,0,0],[1,2,3]]   for i in range(100):#从123中随机选取2个数字   _num=random.randint(1,3)   _oneTowThree=[1,2,3]   _oneTowThree.remove(_num)   self.queue.append(_oneTowThree)   for i in range(5):#地图的最后有空的方块   self.queue.append([])  def start(self):    self.isStarted=True  self.currentX=1  self.timeCost=0  self.currentY=random.randint(1,3)  self.previouY=self.currentY  self.costTimer.start(1000)  self.repaint()  def tick(self):   self.timeCost+=1  self.timingLabel.setText(str(self.timeCost)+"S")  def paintEvent(self, e):  #点击开始之前，currenX变量还没有初始化，下面的代码会引用这个变量，导致出错  if self.isStarted==False:return  #开始画图  self.myPainter.begin(self)  #画背景  self.drawBackGround()    interval=2#方块之间的间隔的二分之一  #画场景  for i in range(5):   _item = self.queue[i + self.currentX-1]   for _num in _item:    #确定每个方块的位置和大小    _startPoint = QPoint(i *(100+interval), (_num -1)* (100+interval) )    _size = QSize((100-2*interval), (100-2*interval))    #设置画笔和画刷    self.myPainter.setPen(QColor.fromRgb(255, 255, 255))    self.myPainter.setBrush(QColor.fromRgb(205,211,159))    #画方块们    self.myPainter.drawRect(QRect(_startPoint, _size))  #画currentMe  #设置画笔和画刷  _myPen = QPen(Qt.white)  self.myPainter.setPen(_myPen) # pen用来画边框  self.myPainter.setBrush(QColor.fromRgb(105, 139 ,105))  #确定每个方块的位置和大小  _startPoint = QPoint(100+interval, (100+interval) *(self.currentY-1))  _size = QSize((100-2*interval), (100-2*interval))  #画方块  self.myPainter.drawRect(QRect(_startPoint, _size))  #结束画图  self.myPainter.end()  def drawBackGround(self):   _myPen = QPen(Qt.white)   self.myPainter.setPen(_myPen) # pen用来画边框  self.myPainter.setBrush(QColor.fromRgb(255,239,124))   _tempSize = self.size()  _newSize = QSize(_tempSize.width(), _tempSize.height()-100)  _startPoint = QPoint(0, 0)   self.myPainter.drawRect(QRect(_startPoint, _newSize))   def keyPressEvent(self, kEvent):   if self.isStarted==False:return   _k=kEvent.key()  #每次只能走相邻的格子  if _k==Qt.Key_Up:   if self.currentY==1:    _nextY=1   else:    _nextY=self.currentY-1  elif _k==Qt.Key_Down:   if self.currentY == 3:    _nextY = 3   else:    _nextY = self.currentY +1  elif _k==Qt.Key_Left:   return#未定义事件  elif _k==Qt.Key_Right:   _nextY = self.currentY  else:   return   if _nextY not in self.queue[self.currentX+1]:   QMessageBox.warning(self,"Step Game","掉坑里了,用时+3S",QMessageBox.Ok)   self.timeCost+=3  else:   self.currentX += 1   self.previouY=self.currentY   self.currentY=_nextY    self.sceneForward()#场景往前走一步  def sceneForward(self):   if self.currentX==101:   self.costTimer.stop()   _reply=QMessageBox.question(self,'恭喜你闯关成功',"总耗时<b>秒"+str(self.timeCost)+"<br>Restart or quit?<br><b>Press Yes to restart or press no to quit this game.",          QMessageBox.No|QMessageBox.Yes,          QMessageBox.Yes)   if _reply==QMessageBox.Yes:    self.start()   else:    self.parent().close()   self.repaint() if __name__ == '__main__': app = QApplication(sys.argv) ex = mainForm() sys.exit(app.exec_())