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snake.py

@@ -13,42 +13,16 @@ 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
-    if setheading == "right":
-        x += 30
-    elif setheading == "left":
-        x -=30
-    elif setheading == "up":
-        y -=30
-    else:
-        y += 30
+    x += 30
     position.append((x, y))
     position.pop(0)
     # 将背景图画上去