save project

snake.py

@@ -18,7 +18,25 @@ while True:
         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()
-    x+=30
+            if event.type == locals.KEYDOWN:
+                if event.key == locals.K__RIGHT and setheading !='left':
+                   setheading = 'right'      
+                if event.key == locals.K__LEFT and setheading !='right':
+                   setheading = 'left' 
+                if event.key == locals.K__UP and setheading !='down':
+                   setheading = 'up' 
+                if event.key == locals.K__DOWN and setheading !='up':
+                   setheading = 'down' 
+    if setheading =='night':
+        x += 30
+    elif setheading =='right':
+        x -= 30
+    elif setheading =='left':
+        x -= 30
+    elif setheading =='up':
+        x += 30
+    elif setheading =='down':
+        x += 30
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去