auto save

snake.py

@@ -13,28 +13,57 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left =pygame.image.load('left.png')
+up =pygame.image.load('up.png')
+down =pygame.image.load('down.png')
 
 x,y=240,120
 position =[(180,90),(180,120),(210,120),(x,y)]
+
+setheading = 'right'
+snake_head =right
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
+        elif event.type==locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and setheading !='left':
+                setheading = 'right'
+                snake_head =right
+            if event.key==locals.K_LEFT and setheading !='right':
+                setheading = 'left'
+                snake_head =left
+            if event.key==locals.K_UP and setheading !='down':
+                setheading = 'up'
+                snake_head =up
+            if event.key==locals.K_DOWN and setheading !='up':
+                setheading = 'down'
+                snake_head =down    
+
+
+
     x +=30
+    if setheading=='right':
+        x+=30
+    elif setheading=='left':
+        x-=30    
+    elif setheading=='up':
+        y-=30    
+    else:
+        y+=30    
+
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head,position[-1])
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body,position[i])
 
-    # screen.blit(body, (210, 120))
-    # screen.blit(body, (180, 120))
-    # screen.blit(body, (180, 90))
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面