save project

snake.py

@@ -10,33 +10,61 @@ FPSCLOCK=pygame.time.Clock()
 
 # 背景
 background = pygame.image.load('bg.png')
-right = pygame.image.load('right.png')
+right = pygame.image.load('right.png')    #右
+left=pygame.image.load('left.png')
+down=pygame.image.load('down.png')
+up=pygame.image.load('up.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-x,y=(240,120)
 
-abab=[(180,90),(180,120),(210,120),(240,120)]
+x,y=(240,120)
+setheading="right"
+snake_head=right
+abab=[(180,90),(180,120),(210,120),(x,y)]
 
 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
+            #后退出程序
             exit()
-    x += 30
+        if event.type == locals.KEYDOWN:
+            if event.key == K_RIGHT and setheading !="left":
+                setheading='right'
+                snake_head=right
+            if event.key == K_LEFT and setheading !="right":
+                setheading='left'
+                snake_head=left
+            if event.key == K_UP and setheading !="down":
+                setheading='up'
+                snake_head=up
+            if event.key == K_DOWN and setheading !="up":
+                setheading='down'
+                snake_head=down
+    if setheading =='right':
+        x+=30
+    elif setheading=='left':
+        x-=30
+    elif setheading=='up':
+        y-=30
+    else :
+        y+=30
+            
+   
     abab.append((x,y))
     abab.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,( x, y))
     # 将贪吃蛇的身体画上去
 #    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
     for i in range(len(abab)-1):
         screen.blit(body,abab[i])
+    screen.blit(food, (360, 300))
+    # 刷新画面
+    
     pygame.display.update()
     FPSCLOCK.tick(3)
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