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python中部分代码转自crossin编程教室的代码
import pygameimport randomfrom sys import exit #向sys模块借用个exit函数来退出程序#定义一个敌机类class Enemy:def restar(self):#重置敌机位置与速度self.x=random.randint(100,600)self.y=random.randint(-200,-80)self.speed=random.random()+0.4def __init__(self):self.restar()self.image=pygame.image.load('enermy.jpg')def move(self):if self.y < 800:self.y+=self.speed #向下移动else:self.restar()#定义一个bullet类，封装子弹相关的数据和方法class Bullet:def __init__(self):self.x=0;self.y=-1;self.image=pygame.image.load('bulet.jpg')self.active=False #默认不激活子弹def move(self):#激活状态下，向上移动if self.active:self.y-=0.8#挡飞出屏幕，设为不激活if self.y<0:self.active=Falsedef restar(self):#重置子弹位置子弹mouseX,mouseY=pygame.mouse.get_pos()self.x=mouseX-self.image.get_width()/2;self.y=mouseY-self.image.get_height()/2;self.active=True;def checkhit(enemy,bullet):#如果子弹在敌机的图片范围之内if (bullet.x > enemy.x and bullet.x < enemy.x + enemy.image.get_width()) and (bullet.y > enemy.y and bullet.y < enemy.y + enemy.image.get_height()):enemy.restar();bullet.active=Falsereturn Truereturn Falseclass Plane:def restar(self):self.x=200self.y=600def __init__(self):self.restar()self.image=pygame.image.load('plane.jpg')def move(self):x, y = pygame.mouse.get_pos(); # 跟随鼠标移动x -= self.image.get_width() / 2;y -= self.image.get_height() / 2;self.x=x;self.y=ydef checkcrash(enemy, plane):if (plane.x + 0.7*plane.image.get_width() > enemy.x) and (plane.x + 0.3*plane.image.get_width() < enemy.x + enemy.image.get_width()) and (plane.y + 0.7*plane.image.get_height() > enemy.y) and (plane.y + 0.3*plane.image.get_width() < enemy.y + enemy.image.get_height()):return Truereturn Falsepygame.init()screen=pygame.display.set_mode((1000,700),0,32) #创建一个窗口pygame.display.set_caption('xwr!')#设置窗口标题background=pygame.image.load('pygame.jpg') #加载并转换图像plane=Plane()#加载飞机图像bullets=[]#创建子弹的listfor i in range(5):bullets.append(Bullet()) #向list添加5发子弹count_b=len(bullets)#子弹总数index_b=0 #即将激活的子弹序号interval_b=0#发射子弹的间隔enemies=[]for e in range(5):enemies.append(Enemy())gameover = False#分数score = 0#用以显示文字的font变量font = pygame.font.Font(None, 32)while True: #游戏主循环函数for event in pygame.event.get():if event.type==pygame.QUIT: #接收到退出事件后退出程序pygame.quit()exit()if gameover and event.type==pygame.MOUSEBUTTONUP:plane.restar()for e in enemies:e.restar()for b in bullets:b.restar()score=0;gameover=Falsescreen.blit(background, (0, 0)) # 将背景图画上去if not gameover:interval_b-=1 #发射间隔递减if interval_b<0: #激活一发子弹bullets[index_b].restar()interval_b=80 #重置间隔时间index_b=(index_b+1)%count_b#子弹序号周期性递增for b in bullets: #处于激活状态的子弹，移动位置并绘制if b.active:for e in enemies:if checkhit(e,b):score+=100b.move()screen.blit(b.image,(b.x,b.y))for e in enemies:if checkcrash(e, plane):gameover = Truee.move()screen.blit(e.image,(e.x,e.y))plane.move()screen.blit(plane.image, (plane.x, plane.y))# 在屏幕左上角显示分数text = font.render("Socre: %d" % score, 1, (0, 0, 0))screen.blit(text, (0, 0))else:# 在屏幕中央显示分数text = font.render("Socre: %d" % score, 1, (0, 0, 0))screen.blit(text, (190, 400))passpygame.display.update() #刷新一下界面
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