save project

snake.py

@@ -28,18 +28,30 @@ while True:
         if event.type==locals.KEYDOWN:
             if event.key==locals.K_RIGHT and R!='left':
                 R='right'
+                r=right
             if event.key==locals.K_LEFT and R!='right':
                 R='left'
+                r=left
             if event.key==locals.K_UP and R!='down':
                 R='up'
+                r=up
             if event.key==locals.K_DOWN and R!='up':
                 R='down'
+                r=down
+    if R=='right':
+        x+=30
+    if R=='left':
+        x-=30
+    if R=='up':
+        y-=30
+    if R=='down':
+        y+=30
     xy.pop(0)
     xy.append((x,y))
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right,xy[-1])
+    screen.blit(r,xy[-1])
     # 将贪吃蛇的身体画上去
     for i in range(len(xy)-1):
         screen.blit(body, xy[i])