save project

my_Tetris.py

@@ -22,20 +22,20 @@ while True:
             exit()
         if event.type == locals.KEYDOWN:
             if event.key==locals.K_UP :
-                if center[0]<25:
+                if center[0]>1:
                     center[0]-=1
             if event.key==locals.K_RIGHT :
                 if center[1]<15:
                     center[1]+=1
             elif event.key==locals.K_LEFT:
-                if center[1]>0:
+                if center[1]>1:
                     center[1]-=1
             elif event.key==locals.K_DOWN:
-                if center[0]>0:
-                    center[0]-=1
+                if center[0]<25:
                     center[0]+=1
                 
 
+
     # 将背景图画上去
     screen.blit(background,(0,0))
     pygame.draw.rect(screen,(255,0,0),(center[1]*20-20,center[0]*20-20,20,20),0)