使用pygame模块编写贪吃蛇的实例讲解
python###刚学了python不久，发现了一个好玩的库pygame
使用pygame模块利用面向对象的思想编写贪吃蛇，主要用到pygame.sprite：
游戏主类
importpygame,sys fromsnake_spriteimportGame_sprite,Snake,Food SCREEN_RECT=pygame.Rect(0,0,828,600) IMG_URL="./image/bg.jpg" #主类 classSnakegame(object): def__init__(self): self.screen=pygame.display.set_mode(SCREEN_RECT.size) self.clock=pygame.time.Clock() self.__create_sprites() def__create_sprites(self): bg=Game_sprite(IMG_URL) self.snake=Snake() forposinself.snake.snake_point: self.screen.blit(self.snake.image,pos) food=Food() self.bg_group=pygame.sprite.Group(bg) self.snake_group=pygame.sprite.Group(self.snake) self.food_group=pygame.sprite.Group(food) defstart_game(self): whileTrue: #1.时钟设置 self.clock.tick(30) #2.事件监听 self.__event_handler() #3.碰撞检测 self.__check_collide() #4.精灵更新 self.__update_sprites() #5.屏幕更新 pygame.display.update() def__event_handler(self): foreventinpygame.event.get(): ifevent.type==pygame.QUIT: Snakegame.__game_over() elifevent.type==pygame.KEYDOWNandevent.key==pygame.K_RIGHTand\ self.snake.direction!='L': self.snake.speedy=0 self.snake.speedx=1 self.snake.direction='R' elifevent.type==pygame.KEYDOWNandevent.key==pygame.K_LEFTand\ self.snake.direction!='R': self.snake.speedy=0 self.snake.speedx=-1 self.snake.direction='L' elifevent.type==pygame.KEYDOWNandevent.key==pygame.K_UPand\ self.snake.direction!='D': self.snake.speedx=0 self.snake.speedy=-1 self.snake.direction='U' elifevent.type==pygame.KEYDOWNandevent.key==pygame.K_DOWNand\ self.snake.direction!='U': self.snake.speedx=0 self.snake.speedy=1 self.snake.direction='D' def__check_collide(self): pass def__update_sprites(self): self.bg_group.update() self.bg_group.draw(self.screen) self.snake_group.update() self.snake_group.draw(self.screen) self.food_group.update() self.food_group.draw(self.screen) @staticmethod def__game_over(): pygame.quit() exit() #游戏启动 if__name__=='__main__': snake=Snakegame() snake.start_game()
工具类
importpygame importrandom SNAKE_IMG="./image/snake.png" FOOD_IMG="./image/food.jpg" classGame_sprite(pygame.sprite.Sprite): def__init__(self,img_name,speedx=1,speedy=0): #调用父类的初始化方法 super(Game_sprite,self).__init__() #属性 self.image=pygame.image.load(img_name) self.rect=self.image.get_rect() self.speedx=speedx self.speedy=speedy defupdate(self): pass #蛇实物 classSnake(Game_sprite): def__init__(self,direction='R',snakelist=[[40,40],[80,40]]): self.direction=direction self.snake_point=snakelist super().__init__(SNAKE_IMG) self.rect.x=self.snake_point[1][0] self.rect.y=self.snake_point[1][1] defupdate(self): self.rect.x+=self.speedx self.rect.y+=self.speedy classFood(Game_sprite): def__init__(self): super(Food,self).__init__(FOOD_IMG) self.rect.x=random.randint(50,828) self.rect.y=random.randint(38,600) defupdate(self): pass
关于这次demo
我发现自己并没有弄懂pygame的具体画面更新机制，以及精灵的控制，对于贪吃蛇头部及身体的画面更新并没有做出来，还有对身体和头的数据结构如何构建并不是很了解。毕竟第一次，希望有大佬看到这篇博客能够指点下。
附上函数式编程的代码
importpygame
importtime
importrandom
x=pygame.init()
white=(255,255,255)
black=(0,0,0)
red=(255,0,0)
green=(0,155,0)
display_width=800
display_height=600
gameDisplay=pygame.display.set_mode((display_width,display_height))
pygame.display.set_caption('Slither')
gameDisplay.fill(white)
pygame.display.update()
block_size=20
applethickness=30
FPS=10
icon=pygame.image.load('appleimage.jpg')
pygame.display.set_icon(icon)
img=pygame.image.load('snakeimage.jpg')
appleimage=pygame.image.load('appleimage.jpg')
clock=pygame.time.Clock()
smallfont=pygame.font.SysFont(None,30)
midfont=pygame.font.SysFont(None,50)
largefont=pygame.font.SysFont("comicsansms",80)
direction="right"
defpause():
paused=True
message_to_screen("暂停",black,-100,"large")
message_to_screen("空格暂停Q退出",black,30)
pygame.display.update()
whilepaused:
foreventinpygame.event.get():
ifevent.type==pygame.QUIT:
pygame.quit()
quit()
ifevent.type==pygame.KEYDOWN:
ifevent.key==pygame.K_SPACE:
paused=False
elifevent.key==pygame.K_q:
pygame.quit()
quit()
#gameDisplay.fill(white)
clock.tick(5)
defscore(score):
text1=smallfont.render("Score:"+str(score),True,black)
gameDisplay.blit(text1,(0,0))
defrandApplegen():
randAppleX=round(random.randrange(0,display_width-applethickness))#/10.0)*10.0
randAppleY=round(random.randrange(0,display_height-applethickness))#/10.0)*10.0
returnrandAppleX,randAppleY
defintro():
intro=True
message_to_screen("按c开始游戏",red,150)
pygame.display.update()
whileintro:
foreventinpygame.event.get():
ifevent.type==pygame.QUIT:
pygame.quit()
quit()
ifevent.type==pygame.KEYDOWN:
ifevent.key==pygame.K_c:
intro=False
ifevent.key==pygame.K_q:
pygame.quit()
quit()
clock.tick(15)
defsnake(snakelist):
forxnyinsnakelist[:-1]:
pygame.draw.rect(gameDisplay,green,[xny[0],xny[1],block_size,block_size])
if(direction=="right"):
head=pygame.transform.rotate(img,270)
elif(direction=="left"):
head=pygame.transform.rotate(img,90)
elif(direction=="up"):
head=img
elif(direction=="down"):
head=pygame.transform.rotate(img,180)
gameDisplay.blit(head,(snakelist[-1][0],snakelist[-1][1]))
deftext_objects(text,color,size):
if(size=="small"):
textsurface=smallfont.render(text,True,color)
elif(size=="middle"):
textsurface=midfont.render(text,True,color)
elif(size=="large"):
textsurface=largefont.render(text,True,color)
returntextsurface,textsurface.get_rect()
defmessage_to_screen(msg,color,y_displace=0,size="small"):
textsurf,textsurf_rect=text_objects(msg,color,size)
textsurf_rect.center=(display_width/2),(display_height/2)+y_displace
gameDisplay.blit(textsurf,textsurf_rect)
defgameLoop():
globaldirection
direction="right"
gameExit=False
gameOver=False
lead_x=display_width/2
lead_y=display_height/2
lead_x_change=10
lead_y_change=0
randAppleX,randAppleY=randApplegen()
snakelist=[]
snakelength=1
whilenotgameExit:
ifgameOver==True:
message_to_screen("GameOver",red,-50,"large")
message_to_screen("PressCtoplayagainorQtoquitthegame",black,50,"small")
pygame.display.update()
whilegameOver==True:
#gameDisplay.fill(white)
foreventinpygame.event.get():
ifevent.type==pygame.KEYDOWN:
ifevent.key==pygame.K_q:
gameExit=True
gameOver=False
ifevent.key==pygame.K_c:
gameLoop()
pygame.quit()
quit()
ifevent.type==pygame.QUIT:
gameExit=True
gameOver=False
#pygame.quit()
#quit()
foreventinpygame.event.get():
ifevent.type==pygame.QUIT:
gameExit=True
ifevent.type==pygame.KEYDOWN:
ifevent.key==pygame.K_LEFTanddirection!="right":
direction="left"
lead_x_change=-block_size
lead_y_change=0
elifevent.key==pygame.K_RIGHTanddirection!="left":
direction="right"
lead_x_change=block_size
lead_y_change=0
elifevent.key==pygame.K_UPanddirection!="down":
direction="up"
lead_y_change=-block_size
lead_x_change=0
elifevent.key==pygame.K_DOWNanddirection!="up":
direction="down"
lead_y_change=block_size
lead_x_change=0
elifevent.key==pygame.K_SPACE:
pause()
iflead_x+block_size/2>=display_widthorlead_x<0orlead_y+block_size/2>=display_heightorlead_y<0:
gameOver=True
lead_x+=lead_x_change
lead_y+=lead_y_change
gameDisplay.fill(white)
gameDisplay.blit(appleimage,(randAppleX,randAppleY))
#pygame.draw.rect(gameDisplay,red,[350,350,100,10])
#gameDisplay.fill(red,rect=[200,200,50,50])#goodmethod
snakehead=[]
snakehead.append(lead_x)
snakehead.append(lead_y)
snakelist.append(snakehead)
iflen(snakelist)>snakelength:
delsnakelist[0]
foreachinsnakelist[:-1]:
ifeach==snakehead:
gameOver=True
snake(snakelist)
score(snakelength-1)
pygame.display.update()
iflead_x>=randAppleXandlead_x<=randAppleX+applethicknessorlead_x+block_size>=randAppleXandlead_x+block_size<=randAppleX+applethickness:
iflead_y>=randAppleYandlead_y<=randAppleY+applethicknessorlead_y+block_size>=randAppleYandlead_y+block_size<=randAppleY+applethickness:
randAppleX,randAppleY=randApplegen()
snakelength+=1;
clock.tick(FPS)
intro()
gameLoop()
pygame.quit()
quit()
以上这篇使用pygame模块编写贪吃蛇的实例讲解就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持毛票票。