save project

snake.py

@@ -19,7 +19,28 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x+=30
+        if event.typy == 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 == "right"
+        x += 30
+    elif setheading == "left"
+        x -= 30
+    elif setheading == "up"
+        y -= 30
+    else:
+        y += 30
+    position.append((x,y))
+
+    
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去