save project

my_Tetris.py

 import pygame
 from pygame import locals
 import random
+
 pygame.init()   # 初始化
 score = 0
 grid_size = 20  # 格子大小
 grid_num_width = 15     # 横向格子数量
 grid_num_height = 25      # 纵向格子数量
-FPS = 30
+FPS = 30                # 帧率
+count = 0
+states = False
 
 # 创建窗口
 screen = pygame.display.set_mode((460, 500))
@@ -44,35 +47,57 @@ cube_colors = [
     (255, 204, 0), (204, 0, 51),(255, 0, 51), (0, 102, 153),
     (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)
-current_shape =shape[index]
-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]<1 or cube[0]>grid_num_height \
-                or cube[1]>grid_num_width:
+        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
-                center[1]=center[1]+1
-                if check(center)==False:
-                    center[1]=center[1]-1
-            elif event.key == locals.K_LEFT:    # 向左
-                center[1]=center[1]-1
-                if check(center)==False:
-                    center[1]=center[1]+1
+            if event.key == locals.K_LEFT:    # 向左
+                center[1] = center[1] - 1       # 左移1列
+                if check(center) == False:
+                    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] = center[1] - 1
+                    
             elif event.key == locals.K_DOWN:    # 向下
-                center[0]=center[0]+1
-                if check(center)==False:
-                    center[0]=center[0]-1
+                center[0] = center[0] + 1
+                if check(center) == False:
+                    center[0] = center[0] - 1
+            
+            elif event.key == locals.K_UP:      # 向上键
+                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]
 
+    if states == False:
+        states = True
+        center = [2, 8]     # 第2行第8列
+        shape = random.choice(shape_list)
+        index = random.randint(0, len(shape)-1)     # 随机形状索引
+        current_shape = shape[index]
+        color = random.choice(cube_colors)         # 随机选取一种颜色
+    count += 1
+    if count % FPS == 0:           # 降落速度的算式
+        center[0] = center[0] + 1
+        if check(center) == False:
+            center[0] = center[0] - 1      
+            states = False      
     # 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