save project

my_Tetris.py

@@ -24,17 +24,20 @@ while True:
             exit()
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT:
+                if center[1] < 15:
                     center[1] += 1
             elif event.key == locals.K_LEFT:
+                if center[1] > 1:
                     center[1] -= 1
             elif event.key == locals.K_DOWN:
+                if center[0] < 25:
                     center[0] += 1
 
     # 将背景图画上去
     screen.blit(background,(0,0))
-    pygame.draw.rect(screen,(255,255,255),
+    pygame.draw.rect(screen,(255,0,0),
                 (center[1]*20-20,center[0]*20-20,20,20),1)
-    pygame.draw.rect(screen,(255,255,0),
+    pygame.draw.rect(screen,(255,255,255),
                 (center[1]*20-20,center[0]*20-20,20,20),1)
     # 得分
     score_text = font.render(str(score),True,(0,0,0))