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snake.py

@@ -10,43 +10,18 @@ FPSCLOCK = pygame.time.Clock()#计时器
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
-up = pygame.image.load('up.png')
-down = pygame.image.load('down.png') 
-left= pygame.image.load('left.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-#
+#设x,y坐标
 x=240
 y=120
-setheading='right'
-snake_head=right
 position = [(210, 120),(180, 120),(180, 90),(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
             exit()
-        if 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
-    if setheading=='right':
-        x+=30
-    elif setheading=='left':
-        x-=30
-    elif setheading=='up':
-        y-=30
-    else:
-        y+=30
+    x+=30#移动
     position.append((x,y))#追加身体的坐标
     position.pop(0)#删除身体末尾的旧坐标
     # 将背景图画上去