save project

my_Tetris.py

@@ -67,8 +67,12 @@ while True:
                 if center[1] > 1:
                     center[1] -= 1
             elif event.key == locals.K_DOWN:    # 向下
-                if center[0] < 25:
-                    center[0] += 1
+                 center[0] = center[0]+1
+                if check(center) ==False:
+                    center[0] = center[0] - 1
+
+             elif event.key == locals.K_UP:
+                 index += 1
 
     # 将背景图画上去
     screen.blit(background, (0, 0))