python实现小游戏代码

mport pygame
import random
from 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()+0.4 def __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.yenemy.x and bullet.x < enemy.x + enemy.image.get_width()) and ( bullet.y > enemy.ywww.cungun.com and bullet.y < enemy.y + enemy.image.get_height() ): enemy.restar(); bullet.active=False return True return False

class Plane:

def restar(self): self.x=200 self.y=600 def __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=y

def 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 True return False

pygame.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()#加载飞机游戏图像
bullets=[]#创建子弹的list
for 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=False screen.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+=100