save project

snake.py

@@ -28,27 +28,29 @@ while True:
             if event.key == locals.K_RIGHT and setheading != 'left':
                 setheading='right'
                 snake_head=right
+                x += 30
+                position.append((x,y))
+                position.pop(0)
             if event.key == locals.K_LEFT and setheading != 'right':
                 setheading='left'
                 snake_head=left
+                x -= 30
+                position.append((x,y))
+                position.pop(0)
             if event.key == locals.K_DOWN and setheading != 'down':
                 setheading='down'
                 snake_head=down
+                y += 30
+                position.append((x,y))
+                position.pop(0)
             if event.key == locals.K_UP and setheading != 'up':
                 setheading='up'
                 snake_head=up
-                
-    if setheading=='right':
-        x += 30
-    if setheading=='left':
-        x -= 30
-    if setheading=='up':
                 y -= 30
-    if setheading=='down':
-        y += 30
-    screen.blit(snake_head,position[-1])
                 position.append((x,y))
                 position.pop(0)
+           
+    screen.blit(snake_head,position[-1])
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去