save project

snake.py

@@ -22,7 +22,7 @@ x,y=240,120
 position=[(180,90),(180,120),(210,120),(x,y)]
 
 setheading="right"
-snack head=right
+snack_head=right
 
 while True:
     for event in pygame.event.get():
@@ -47,13 +47,13 @@ while True:
     elif setheading=="left":
         x-=30 
     elif setheading=="up":
-        x-=30 
+        y-=30 
     else:
-        x+=30 
+        y+=30 
+
 
 
     
-    x+=30
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去