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snake.py

@@ -16,12 +16,25 @@ body = pygame.image.load('body.png')
 #贪吃蛇位置信息(初始：贪吃蛇四段身体四个坐标)
 #贪吃蛇位置信息(初始：贪吃蛇四段身体四个坐标)
 x,y = 240,120
 x,y = 240,120
 position = [(180, 90),(180, 120),(210, 120),(x,y)]
 position = [(180, 90),(180, 120),(210, 120),(x,y)]
+#不断更新列表：增加新元素，删除索引为0得元素
+#实现蛇各个部分得坐标位置得更新，实现小蛇移动得效果
 
 
+heading = "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
             # 接收到退出事件后退出程序
             exit()
             exit()
+        elif event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and heading!="left":
+                heading = "right"
+                x -= 30
+            if event.key == locals.K_RIGHT and heading!="left":
+                heading = "right"
+                x -= 30
+            if event.key == locals.K_RIGHT and heading!="left":
+                heading = "right"
+                x -= 30
     x += 30#向右移动
     x += 30#向右移动
     position.append((x,y))
     position.append((x,y))
     position.pop(0)
     position.pop(0)