save project

my_Tetris.py

 import pygame
 from pygame import locals
+import random
 
 pygame.init()   # 初始化
 score = 0
@@ -45,36 +46,50 @@ cube_colors = [
     (153, 0, 51), (204, 255, 102), (255, 153, 0)]
 
 center = [2, 8]     # 第2行第8列
-
-shape=random.choice(shape_list)
-index = random.randint(0,len(shape)-1)
+shape = random.choice(shape_list)
+index = random.randint(0, len(shape)-1)     # 随机形状索引
 current_shape = shape[index]
-shape=random.choice(cube_colors)
+color = random.choice(cube_colors)          # 随机选取一种颜色
+
 def check(center):
-    for cube in  current_shape:
-        cube = (cube[0]+center[0],cube[1]+center[1])
-        if (cube[0]<1 or cube[1]<1 or cube[0]>grid_num_height or cube[1]>grid_num_width):
+    for cube in current_shape:
+        cube = (cube[0] + center[0], cube[1] + center[1])
+        # 当前的小方块超出网格的行、列，就返回False
+        if cube[0] < 1 or cube[1] < 1 or cube[0] > grid_num_height \
+                or cube[1] >grid_num_width:
             return False
 
-
-
-
-
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             exit()
         if event.type == locals.KEYDOWN:
-            if event.key == locals.K_RIGHT:     # 向右
+            if event.key == locals.K_LEFT:    # 向左
+                center[1] = center[1] - 1       # 左移1列
                 if check(center) == False:
-                    center[1] += 1
-            elif event.key == locals.K_LEFT:    # 向左
+                    center[1] = center[1] + 1   # 右移1列
+
+            elif event.key == locals.K_RIGHT:     # 向右
+                center[1] = center[1] + 1
                 if check(center) == False:
-                    center[1] -= 1
+                    center[1] = center[1] - 1
+                    
             elif event.key == locals.K_DOWN:    # 向下
+                center[0] = center[0] + 1
                 if check(center) == False:
-                    center[0] += 1
+                    center[0] = center[0] - 1
+            
+            elif event.key == locals.K_UP:
+                old_index=index
+                index += 1
+                if index>=len(shape):
+                    index = 0
+                current_shape=shape[index]
+                if check(center)==False:
+                    index=old_index
+                    current_shape=shape[index]
 
+                
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 计算出所有小方块的行、列位置