save project

my_Tetris.py

@@ -25,13 +25,15 @@ while True:
             exit()
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT:
-                center[1] < 15
-                 center[1] += 1 
+                if center[1] < 15:
+                    center[1] += 1 
             elif event.key == locals.K_LEFT:
-                center[1] > 1          
+                if center[1] > 1:
+                    center[1] -= 1  
+
             elif event.key == locals.K_DOWN:
-                if center[0] < 25
-                center[0] += 1      
+                if center[0] < 25:
+                    center[0] += 1      
 
     # 将背景图画上去
     screen.blit(background,(0,0))
@@ -41,9 +43,9 @@ while True:
         pos = (cube[0] + center[0], cube[1] + center[1])
         current_pos.append(pos)
     for cube in current_pos:
-    pygame.draw.rect(screen,(255,0,0),
+        pygame.draw.rect(screen,(255,0,0),
                 (cube[1] * 20-20, cube[0] * 20-20, 20, 20), 0)
-    pygame.draw.rect(screen,(255,255,255),
+        pygame.draw.rect(screen,(255,255,255),
                     (cube[1] * 20-20, cube[0] * 20-20, 20, 20), 1)
     # 得分
     text_surface = font.render(str(score), True, (0, 0, 0))