save project

snake.py

@@ -16,20 +16,20 @@ my_font = pygame.font.Font('neuropol.ttf', 18)
 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()
-    # 将背景图画上去
-    elif event.type==locals.KEYDOWN
-        if event.key==locals.K_LEFT and setheading !="left"
+    
+    elif event.type==locals.KEYDOWN:
+        if event.key==locals.K_RIGHT and setheading !="left"：
             setheading = 'right'
             snack_head = right
-        if event.key==locals.K_LEFT and setheading != "reght"
+        if event.key==locals.K_LEFT and setheading != "reght"：
             setheading = 'left'
             snack_head = K_LEF
-        if event.key==locals.K_UP and setheading != "down"
+        if event.key==locals.K_UP and setheading != "down"：
             setheading='up'
             snack_head=up
-        if event.key==locals.K_DOWN and setheading !="up"
+        if event.key==locals.K_DOWN and setheading !="up":
             setheading='down'
             snack_head=down
     if setheading == "right":
@@ -41,6 +41,13 @@ while True:
     else:
         y+=30
     position.append((x,y))
+        if x <0 or x> 630 or y <0 or y> 450:
+            exit()
+
+
+
+
+
     if x==apper_x and y==apple_y:
         num=random.randiut(1,22)
         num=random.randiut(1,16)