save project

my_Tetris.py

@@ -54,7 +54,7 @@ color = random.choice(cube_colors)
 def check(center):
     for cube in current_shape:
         cube = (cube[0] + center[0], cube[1] + center[1])
-        if cube[0] < 1 or cube[1] < cube[0] > grid_num_height \
+        if cube[0] < 1 or cube[1] < 1 or cube[0] > grid_num_height \
                 or cube[1] > grid_num_width:
             return False
 while True:
@@ -73,7 +73,7 @@ while True:
             elif event.key == locals.K_DOWN:
                 center[0] = center[0] + 1
                 if check(center) == False:
-                    center[0] = center[0] + 1
+                    center[0] = center[0] - 1
 
     # 将背景图画上去
     screen.blit(background, (0, 0))