save project

snake.py

@@ -24,7 +24,7 @@ snake_head = right
 aaa=[(180,90),(180,120),(210,120),(x,y)]
 while True:
     for event in pygame.event.get():
-        if event.type == KEYDOWN:
+        if event.type ==locals.KEYDOWN:
             if event.key ==locals.K_UP and setheading!="down":
                 setheading = "up"
                 snake_head = up
@@ -37,11 +37,11 @@ while True:
             if event.key ==locals.K_LEFT and setheading!="right":
                 setheading = "left"
                 snake_head = left
-    if setheading = "up"
+    if setheading == "up":
         y = y-30
-    elif setheading = "down"
+    elif setheading == "down":
         y = y+30    
-    elif setheading = "left"
+    elif setheading == "left":
         x = x-30        
     else:
         x = x+30        
@@ -49,7 +49,7 @@ while True:
             # 接收到退出事件后退出程序
             exit()
     # 将背景图画上去
-    x=x+30
+
     aaa.append((x,y))
     aaa.pop(0)
     screen.blit(background, (0, 0))
@@ -65,4 +65,4 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    a.tick(12)
+    a.tick(3)