save project

snake.py

@@ -22,7 +22,25 @@ 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()
+        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 == "right":
         x += 30
         x += 30
+    elif setheading == "left":  
+        x -= 30
+    elif setheading == "up":   
+        y -= 30
+    else:
+        y += 30        
+    
     position.append((x,y))
     position.append((x,y))
     position.pop(0)
     position.pop(0)
      # 将背景图画上去
      # 将背景图画上去