Python+Qt5实现flappybird

# -*- coding:utf-8 -*-
"""
@author:Kazama
@file:main.py
@time:2018/9/28 11:03
"""
import sys

from PyQt5.QtWidgets import QApplication

from MainWindow import MainWindow

if __name__ == ‘__main__‘:

    app = QApplication([])

    mainWindow = MainWindow()

    sys.exit(app.exec_())

# -*- coding:utf-8 -*-
"""
@author:Kazama
@file:MainWindow.py
@time:2018/9/28 11:13
"""
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QMainWindow, QDesktopWidget, QVBoxLayout, QLabel

from GameScene import GameScene
from MainScene import MainScene
from srcImg import srcImg


class MainWindow(QMainWindow):

    def __init__(self):
        super().__init__()

        self.srcImg = srcImg()

        self.initUI()

    def initUI(self):
        self.setWindowTitle("Flappy bird")
        self.setFixedSize(384, 512)
        self.center()#窗口居中

        # self.menuBar()
        #
        # self.statusBar()

        """
        centerLabel为什么需要？因为MainWindow只能同时设置一个CentralWidget，如果要重新setCentralWidget，
        则将会自动销毁原有的Widget
        QVBoxLayout可以不用传参：centerLabel，也就是说mainScene可以少修改一个clabel。但是用了它会出现一个边框，
        类似于margin!=0
        """
        self.centerLabel = QLabel()#建个中心标签

        self.mainScene = MainScene(self.centerLabel,self)#把MainScene画在centerLabel，MainScene类实例化
        self.mainScene.setFixedSize(384, 512)#使窗口大小固定
        self.mainScene.move(0,0)

        self.gameScene=GameScene(self.centerLabel,self)
        self.gameScene.setFixedSize(384, 512)
        self.gameScene.move(0, 0)
        self.gameScene.hide()#游戏中界面切换的思路

        self.setCentralWidget(self.centerLabel)  # 设置CentralWidget(把centerLabel放进去

        self.show()  # 展示8

    def center(self):
        qr = self.frameGeometry()
        cp = QDesktopWidget().availableGeometry().center()
        qr.moveCenter(cp)
        self.move(qr.topLeft())

    def switch2GameScene(self):
        self.mainScene.hide()
        self.gameScene.show()

    def switch2MainScene(self):
        self.mainScene.show()
        self.gameScene.hide()

# -*- coding:utf-8 -*-
"""
@author:Kazama
@file:MainScene.py
@time:2018/9/28 11:31
"""
from PyQt5.QtCore import QBasicTimer
from PyQt5.QtGui import QPainter
from PyQt5.QtWidgets import QWidget, QLabel, QVBoxLayout, QPushButton


class MainScene(QWidget):

    # MainScene是MainWindow的一个成员，父组件ParentWindow，其实获取的是MainWindow(因为要调用父级的组件)
    # clabel对应前面传进来的centerLabel
    #父级init需要传进参数才能init
    def __init__(self,clabel,ParentWindow):
        super().__init__(clabel)

        self.parentWindow=ParentWindow
        self.timer=QBasicTimer()#控制60帧
        self.painter=QPainter()#加图片
        self.countTime=0#计数器
        self.groundPosition=0#记录grass bar的pos

        self.initUI()

    def initUI(self):

        self.btn_play=QPushButton(self)
        self.btn_play.move(35,360)
        self.btn_play.resize(140,78)
        self.btn_play.setStyleSheet(‘QPushButton{background:url(data/Picture/other/Again.png);border-radius:10px}‘                                    ‘QPushButton:hover{background:url(data/Picture/other/AgainHover.png);border-radius:10px}‘                                    ‘QPushButton:pressed{background:url(data/Picture/other/AgainPressed.png);border-radius:10px}‘)
        self.btn_play.clicked.connect(self.on_btn_play_clicked)


        self.btn_rank = QPushButton(self)
        self.btn_rank.move(210, 360)
        self.btn_rank.resize(140, 78)
        self.btn_rank.setStyleSheet(‘QPushButton{background:url(data/Picture/other/Ranking.png);border-radius:10px}‘                                    ‘QPushButton:hover{background:url(data/Picture/other/RankingHover.png);border-radius:10px}‘                                     ‘QPushButton:pressed{background:url(data/Picture/other/RankingPressed.png);border-radius:10px}‘)



        self.show()

    """
    paintEvent三种调用情形：1.调用show()2.窗口有变化（属性改变时）3.（前2被动调用，3主动）self.repaint和update()
    repaint会立即执行，update是向消息循环中加入绘图事件
    """
    def paintEvent(self, event):
        self.painter.begin(self)

        self.rendBackground()

        self.rendBird()

        self.painter.end()
        super().paintEvent(event)

    def rendBird(self):
        if self.countTime<15:
            self.painter.drawPixmap(175, 220, self.parentWindow.srcImg.wingCentered0)
        elif self.countTime<30:
            self.painter.drawPixmap(175, 216, self.parentWindow.srcImg.wingUp0)
        elif self.countTime<45:
            self.painter.drawPixmap(175, 220, self.parentWindow.srcImg.wingCentered0)
        else:
            self.painter.drawPixmap(175, 224, self.parentWindow.srcImg.wingDown0)

    def rendBackground(self):

        self.painter.drawPixmap(0,0,self.parentWindow.srcImg.background_dayCopyy)#白天图
        self.painter.drawPixmap( self.groundPosition, 448,self.parentWindow.srcImg.ground);
        self.painter.drawPixmap(self.groundPosition - 384, 448,self.parentWindow.srcImg.ground);

    def timerEvent(self, event):

        if event.timerId()==self.timer.timerId():
            self.countTime=self.countTime%60+1#60帧

            self.update_groundPosition()

            self.update()#手动刷新，update()是QT默认调用所有的event，然后一直循环
        else:
            super().timerEvent()

    def update_groundPosition(self):

        self.groundPosition -= 2
        if self.groundPosition <= 0:
            self.groundPosition = 384


    def show(self):
        self.timer.start(1000/60,self)#1帧=1000/60ms就是60帧
        super().show()

    def hide(self):
        self.timer.stop()
        super().hide()

    def on_btn_play_clicked(self):
        self.parentWindow.switch2GameScene()