save project

snake.py

@@ -16,6 +16,7 @@ right= pygame.image.load('right.png')
 x,y=240,120
 position=[(180,90),(180,120),(210,120),(x,y)]
 s="right"
+d=right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -24,30 +25,30 @@ while True:
         if event.type==locals.KEYDOWN:
             if event.key==locals.K_RIGHT and s!='left':
                 s="right" 
+                d=right   
             if event.key==locals.K_LEFT and s!='right':
                 s="left"
+                d=left
             if event.key==locals.K_UP and s!='down':
                 s="up"
+                d=up
             if event.key==locals.K_DOWN and s!='up':
                 s="down"
+                d=down
     if s == "right": 
         x+=30       
-        screen.blit(right,(x,y))       
     if s == "up": 
-        y+=30
-        screen.blit(up,(x,y))
-    if s == "down":
         y-=30
-        screen.blit(down,(x,y))
+    if s == "down":
+        y+=30
     if s == "left":
         x-=30  
-        screen.blit(left,(x,y))       
     position.append((x,y))
     position.pop(0)                   
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上
-    screen.blit(right, (x,y))
+    screen.blit(d, (x,y))
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body,position[i])