save project

snake.py

-import pygame
+import pygame                             #导入pygame
 from pygame import locals
 from pygame import locals
 
 
-# 初始化pygame，为使用硬件做准备
-pygame.init()
 
 
-# 创建一个窗口
-screen = pygame.display.set_mode((660, 480))
+pygame.init()                             # 初始化pygame，为使用硬件做准备
 
 
-# 背景
-background = pygame.image.load('bg.png')
-right = pygame.image.load('right.png')
-food = pygame.image.load('apple.png')
-body = pygame.image.load('body.png')
+
+screen=pygame.display.set_mode((660, 480))# 创建一个窗口
+
+background=pygame.image.load('bg.png')    #导入背景
+right=pygame.image.load('right.png')      #导入头
+left=pygame.image.load('left.png')        #导入身体
+up=pygame.image.load('up.png')            #导入身体
+down=pygame.image.load('down.png')        #导入身体
+food=pygame.image.load('apple.png')       #导入苹果
+body=pygame.image.load('body.png')        #导入身体
 FPS=pygame.time.Clock()
 FPS=pygame.time.Clock()
-x,y=240,120
+x,y=240,120                               #设置x,y
 position=[(180,90),(180,120),(210,120),(x,y)]
 position=[(180,90),(180,120),(210,120),(x,y)]
 heading='right'
 heading='right'
+snake_head=right
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type == locals.QUIT:                           
         if event.type == locals.QUIT:                           
-            # 接收到退出事件后退出程序
-            exit()
+            exit()                        #接收到退出事件后退出程序
         if event.type==locals.KEYDOWN:
         if event.type==locals.KEYDOWN:
             if event.key==locals.K_RIGHT and heading !='left':
             if event.key==locals.K_RIGHT and heading !='left':
                 heading='right'
                 heading='right'
+                snake_head=right
             if event.key==locals.K_LEFT and heading !='right':
             if event.key==locals.K_LEFT and heading !='right':
                 heading='left'
                 heading='left'
+                snake_head=left
             if event.key==locals.K_UP and heading !='down':
             if event.key==locals.K_UP and heading !='down':
                 heading='up'
                 heading='up'
+                snake_head=up
             if event.key==locals.K_DOWN and heading !='up':
             if event.key==locals.K_DOWN and heading !='up':
                 heading='down'
                 heading='down'
+                snake_head=down
     
     
     if heading=='right':
     if heading=='right':
         x+=30
         x+=30
@@ -42,13 +48,9 @@ while True:
     position.append((x,y))
     position.append((x,y))
     position.pop(0)
     position.pop(0)
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
-    # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
-    # 将贪吃蛇的身体画上去
+    screen.blit(snake_head, (x, y))  #将贪吃蛇画上去
     for i in range(len(position)-1):
     for i in range(len(position)-1):
-        screen.blit(body,position[i])
-    # 将果实画上去
-    screen.blit(food, (360, 300))
-    # 刷新画面
-    pygame.display.update()
+        screen.blit(body,position[i])#将贪吃蛇的身体画上去
+    screen.blit(food, (360, 300))    #将果实画上去
+    pygame.display.update()          #刷新画面
     FPS.tick(3)
     FPS.tick(3)
\ No newline at end of file