1. 案例介绍

俄罗斯方块是由 4 个小方块组成不同形状的板块，随机从屏幕上方落下，按方向键调整板块的位置和方向，在底部拼出完整的一行或几行。这些完整的横条会消失，给新落下来的板块腾出空间，并获得分数奖励。没有被消除掉的方块不断堆积，一旦堆到顶端，便告输，游戏结束。本例难度为高级，适合具有 Python 进阶和 Pygame 编程技巧的用户学习。

2. 设计要点

边框――由 15*25 个空格组成，方块就落在这里面。盒子――组成方块的其中小方块，是组成方块的基本单元。方块――从边框顶掉下的东西，游戏者可以翻转和改变位置。每个方块由 4 个盒子组成。形状――不同类型的方块。这里形状的名字被叫做 T, S, Z ,J, L, I , O。如下图所示：

模版――用一个列表存放形状被翻转后的所有可能样式。全部存放在变量里，变量名字如 S or J。着陆――当一个方块到达边框的底部或接触到在其他的盒子话，就说这个方块着陆了。那样的话，另一个方块就会开始下落。

3. 示例效果

4. 示例源码


 

import pygame
import random
import ospygame.init()GRID_WIDTH = 20
GRID_NUM_WIDTH = 15
GRID_NUM_HEIGHT = 25
WIDTH, HEIGHT = GRID_WIDTH * GRID_NUM_WIDTH, GRID_WIDTH * GRID_NUM_HEIGHT
SIDE_WIDTH = 200
SCREEN_WIDTH = WIDTH + SIDE_WIDTH
WHITE = (0xff, 0xff, 0xff)
BLACK = (0, 0, 0)
LINE_COLOR = (0x33, 0x33, 0x33)CUBE_COLORS = [(0xcc, 0x99, 0x99), (0xff, 0xff, 0x99), (0x66, 0x66, 0x99),(0x99, 0x00, 0x66), (0xff, 0xcc, 0x00), (0xcc, 0x00, 0x33),(0xff, 0x00, 0x33), (0x00, 0x66, 0x99), (0xff, 0xff, 0x33),(0x99, 0x00, 0x33), (0xcc, 0xff, 0x66), (0xff, 0x99, 0x00)
]screen = pygame.display.set_mode((SCREEN_WIDTH, HEIGHT))
pygame.display.set_caption("俄罗斯方块")
clock = pygame.time.Clock()
FPS = 30score = 0
level = 1screen_color_matrix = [[None] * GRID_NUM_WIDTH for i in range(GRID_NUM_HEIGHT)]# 设置游戏的根目录为当前文件夹
base_folder = os.path.dirname(__file__)def show_text(surf, text, size, x, y, color=WHITE):font_name = os.path.join(base_folder, 'font/font.ttc')font = pygame.font.Font(font_name, size)text_surface = font.render(text, True, color)text_rect = text_surface.get_rect()text_rect.midtop = (x, y)surf.blit(text_surface, text_rect)class CubeShape(object):SHAPES = ['I', 'J', 'L', 'O', 'S', 'T', 'Z']I = [[(0, -1), (0, 0), (0, 1), (0, 2)],[(-1, 0), (0, 0), (1, 0), (2, 0)]]J = [[(-2, 0), (-1, 0), (0, 0), (0, -1)],[(-1, 0), (0, 0), (0, 1), (0, 2)],[(0, 1), (0, 0), (1, 0), (2, 0)],[(0, -2), (0, -1), (0, 0), (1, 0)]]L = [[(-2, 0), (-1, 0), (0, 0), (0, 1)],[(1, 0), (0, 0), (0, 1), (0, 2)],[(0, -1), (0, 0), (1, 0), (2, 0)],[(0, -2), (0, -1), (0, 0), (-1, 0)]]O = [[(0, 0), (0, 1), (1, 0), (1, 1)]]S = [[(-1, 0), (0, 0), (0, 1), (1, 1)],[(1, -1), (1, 0), (0, 0), (0, 1)]]T = [[(0, -1), (0, 0), (0, 1), (-1, 0)],[(-1, 0), (0, 0), (1, 0), (0, 1)],[(0, -1), (0, 0), (0, 1), (1, 0)],[(-1, 0), (0, 0), (1, 0), (0, -1)]]Z = [[(0, -1), (0, 0), (1, 0), (1, 1)],[(-1, 0), (0, 0), (0, -1), (1, -1)]]SHAPES_WITH_DIR = {'I': I, 'J': J, 'L': L, 'O': O, 'S': S, 'T': T, 'Z': Z}def __init__(self):self.shape = self.SHAPES[random.randint(0, len(self.SHAPES) - 1)]# 骨牌所在的行列self.center = (2, GRID_NUM_WIDTH // 2)self.dir = random.randint(0, len(self.SHAPES_WITH_DIR[self.shape]) - 1)self.color = CUBE_COLORS[random.randint(0, len(CUBE_COLORS) - 1)]def get_all_gridpos(self, center=None):curr_shape = self.SHAPES_WITH_DIR[self.shape][self.dir]if center is None:center = [self.center[0], self.center[1]]return [(cube[0] + center[0], cube[1] + center[1])for cube in curr_shape]def conflict(self, center):for cube in self.get_all_gridpos(center):# 超出屏幕之外，说明不合法if cube[0] < 0 or cube[1] < 0 or cube[0] >= GRID_NUM_HEIGHT or \cube[1] >= GRID_NUM_WIDTH:return True# 不为None，说明之前已经有小方块存在了，也不合法if screen_color_matrix[cube[0]][cube[1]] is not None:return Truereturn Falsedef rotate(self):new_dir = self.dir + 1new_dir %= len(self.SHAPES_WITH_DIR[self.shape])old_dir = self.dirself.dir = new_dirif self.conflict(self.center):self.dir = old_dirreturn Falsedef down(self):# import pdb; pdb.set_trace()center = (self.center[0] + 1, self.center[1])if self.conflict(center):return Falseself.center = centerreturn Truedef left(self):center = (self.center[0], self.center[1] - 1)if self.conflict(center):return Falseself.center = centerreturn Truedef right(self):center = (self.center[0], self.center[1] + 1)if self.conflict(center):return Falseself.center = centerreturn Truedef draw(self):for cube in self.get_all_gridpos():pygame.draw.rect(screen, self.color,(cube[1] * GRID_WIDTH, cube[0] * GRID_WIDTH,GRID_WIDTH, GRID_WIDTH))pygame.draw.rect(screen, WHITE,(cube[1] * GRID_WIDTH, cube[0] * GRID_WIDTH,GRID_WIDTH, GRID_WIDTH),1)def draw_grids():for i in range(GRID_NUM_WIDTH):pygame.draw.line(screen, LINE_COLOR,(i * GRID_WIDTH, 0), (i * GRID_WIDTH, HEIGHT))for i in range(GRID_NUM_HEIGHT):pygame.draw.line(screen, LINE_COLOR,(0, i * GRID_WIDTH), (WIDTH, i * GRID_WIDTH))pygame.draw.line(screen, WHITE,(GRID_WIDTH * GRID_NUM_WIDTH, 0),(GRID_WIDTH * GRID_NUM_WIDTH, GRID_WIDTH * GRID_NUM_HEIGHT))def draw_matrix():for i, row in zip(range(GRID_NUM_HEIGHT), screen_color_matrix):for j, color in zip(range(GRID_NUM_WIDTH), row):if color is not None:pygame.draw.rect(screen, color,(j * GRID_WIDTH, i * GRID_WIDTH,GRID_WIDTH, GRID_WIDTH))pygame.draw.rect(screen, WHITE,(j * GRID_WIDTH, i * GRID_WIDTH,GRID_WIDTH, GRID_WIDTH), 2)def draw_score():show_text(screen, u'得分：{}'.format(score), 20, WIDTH + SIDE_WIDTH // 2, 100)def remove_full_line():global screen_color_matrixglobal scoreglobal levelnew_matrix = [[None] * GRID_NUM_WIDTH for i in range(GRID_NUM_HEIGHT)]index = GRID_NUM_HEIGHT - 1n_full_line = 0for i in range(GRID_NUM_HEIGHT - 1, -1, -1):is_full = Truefor j in range(GRID_NUM_WIDTH):if screen_color_matrix[i][j] is None:is_full = Falsecontinueif not is_full:new_matrix[index] = screen_color_matrix[i]index -= 1else:n_full_line += 1score += n_full_linelevel = score // 20 + 1screen_color_matrix = new_matrixdef show_welcome(screen):show_text(screen, u'俄罗斯方块', 30, WIDTH / 2, HEIGHT / 2)show_text(screen, u'按任意键开始游戏', 20, WIDTH / 2, HEIGHT / 2 + 50)running = True
gameover = True
counter = 0
live_cube = None
while running:clock.tick(FPS)for event in pygame.event.get():if event.type == pygame.QUIT:running = Falseelif event.type == pygame.KEYDOWN:if gameover:gameover = Falselive_cube = CubeShape()breakif event.key == pygame.K_LEFT:live_cube.left()elif event.key == pygame.K_RIGHT:live_cube.right()elif event.key == pygame.K_DOWN:live_cube.down()elif event.key == pygame.K_UP:live_cube.rotate()elif event.key == pygame.K_SPACE:while live_cube.down() == True:passremove_full_line()# level 是为了方便游戏的难度，level 越高 FPS // level 的值越小# 这样屏幕刷新的就越快，难度就越大if gameover is False and counter % (FPS // level) == 0:# down 表示下移骨牌，返回False表示下移不成功，可能超过了屏幕或者和之前固定的# 小方块冲突了if live_cube.down() == False:for cube in live_cube.get_all_gridpos():screen_color_matrix[cube[0]][cube[1]] = live_cube.colorlive_cube = CubeShape()if live_cube.conflict(live_cube.center):gameover = Truescore = 0live_cube = Nonescreen_color_matrix = [[None] * GRID_NUM_WIDTH for i in range(GRID_NUM_HEIGHT)]# 消除满行remove_full_line()counter += 1# 更新屏幕screen.fill(BLACK)draw_grids()draw_matrix()draw_score()if live_cube is not None:live_cube.draw()if gameover:show_welcome(screen)pygame.display.update()