帮我写出一段电脑游戏代码 就是单纯俄罗斯方块的小游戏代码

好的，下面是一个简单的俄罗斯方块游戏的代码：

import pygame
import random

# 初始化Pygame
pygame.init()

# 设置游戏窗口大小
WINDOW_WIDTH = 400
WINDOW_HEIGHT = 600
WINDOW_SIZE = (WINDOW_WIDTH, WINDOW_HEIGHT)

# 创建游戏窗口
screen = pygame.display.set_mode(WINDOW_SIZE)

# 设置游戏标题
pygame.display.set_caption("俄罗斯方块")

# 定义方块的大小和颜色
BLOCK_SIZE = 20
BLOCK_COLOR = (0, 255, 0)

# 定义游戏区域的大小和位置
GAME_AREA_LEFT = 50
GAME_AREA_TOP = 50
GAME_AREA_WIDTH = 10 * BLOCK_SIZE
GAME_AREA_HEIGHT = 20 * BLOCK_SIZE

# 定义游戏区域的边框颜色和宽度
GAME_AREA_BORDER_COLOR = (255, 255, 255)
GAME_AREA_BORDER_WIDTH = 2

# 定义方块的形状
BLOCK_SHAPES = [
    [[1, 1, 1], [0, 1, 0]],
    [[0, 2, 2], [2, 2, 0]],
    [[3, 3, 0], [0, 3, 3]],
    [[4, 0, 0], [4, 4, 4]],
    [[0, 0, 5], [5, 5, 5]],
    [[6, 6], [6, 6]],
    [[7, 7, 7, 7]]
]

# 定义方块的类型
BLOCK_TYPES = len(BLOCK_SHAPES)

# 定义方块的初始位置
INIT_BLOCK_X = 5
INIT_BLOCK_Y = 0

# 定义方块的移动速度
BLOCK_SPEED = 1

# 定义游戏的状态
GAME_STATE_START = 0
GAME_STATE_RUN = 1
GAME_STATE_OVER = 2

# 定义游戏得分
SCORE_PER_ROW = 100

# 定义游戏的字体
FONT_SIZE = 30
FONT_COLOR = (255, 255, 255)
font = pygame.font.SysFont(None, FONT_SIZE)

# 初始化游戏状态
game_state = GAME_STATE_START

# 初始化方块的位置和形状
block_x = INIT_BLOCK_X
block_y = INIT_BLOCK_Y
block_shape = BLOCK_SHAPES[random.randint(0, BLOCK_TYPES - 1)]

# 初始化游戏区域的矩阵
game_area = [[0] * 10 for i in range(20)]

# 初始化游戏得分
score = 0

# 绘制游戏区域的边框
def draw_game_area_border():
    pygame.draw.rect(screen, GAME_AREA_BORDER_COLOR, (GAME_AREA_LEFT - GAME_AREA_BORDER_WIDTH, GAME_AREA_TOP - GAME_AREA_BORDER_WIDTH, GAME_AREA_WIDTH + 2 * GAME_AREA_BORDER_WIDTH, GAME_AREA_HEIGHT + 2 * GAME_AREA_BORDER_WIDTH), GAME_AREA_BORDER_WIDTH)

# 绘制方块
def draw_block():
    for i in range(len(block_shape)):
        for j in range(len(block_shape[i])):
            if block_shape[i][j] != 0:
                pygame.draw.rect(screen, BLOCK_COLOR, (GAME_AREA_LEFT + (block_x + j) * BLOCK_SIZE, GAME_AREA_TOP + (block_y + i) * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE))

# 绘制游戏区域
def draw_game_area():
    for i in range(len(game_area)):
        for j in range(len(game_area[i])):
            if game_area[i][j] != 0:
                pygame.draw.rect(screen, BLOCK_COLOR, (GAME_AREA_LEFT + j * BLOCK_SIZE, GAME_AREA_TOP + i * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE))

# 判断方块是否可以移动
def can_move(x, y, shape):
    for i in range(len(shape)):
        for j in range(len(shape[i])):
            if shape[i][j] != 0:
                if x + j < 0 or x + j >= 10 or y + i >= 20 or (y + i >= 0 and game_area[y + i][x + j] != 0):
                    return False
    return True

# 移动方块
def move_block(x, y, shape):
    if can_move(x, y, shape):
        return (x, y, shape)
    else:
        return (block_x, block_y, block_shape)

# 固定方块
def fix_block(x, y, shape):
    for i in range(len(shape)):
        for j in range(len(shape[i])):
            if shape[i][j] != 0:
                game_area[y + i][x + j] = shape[i][j]
    return (INIT_BLOCK_X, INIT_BLOCK_Y, BLOCK_SHAPES[random.randint(0, BLOCK_TYPES - 1)])

# 消除行
def remove_row():
    global score
    rows = []
    for i in range(len(game_area)):
        if sum(game_area[i]) == 10:
            rows.append(i)
    for row in rows:
        del game_area[row]
        game_area.insert(0, [0] * 10)
        score += SCORE_PER_ROW * len(rows)

# 绘制游戏得分
def draw_score():
    score_text = font.render("Score: " + str(score), True, FONT_COLOR)
    screen.blit(score_text, (10, 10))

# 绘制游戏结束界面
def draw_game_over():
    game_over_text = font.render("Game Over", True, FONT_COLOR)
    screen.blit(game_over_text, (WINDOW_WIDTH // 2 - FONT_SIZE * 3, WINDOW_HEIGHT // 2 - FONT_SIZE))

# 游戏循环
while True:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()
        elif event.type == pygame.KEYDOWN:
            if game_state == GAME_STATE_START or game_state == GAME_STATE_OVER:
                if event.key == pygame.K_SPACE:
                    game_state = GAME_STATE_RUN
                    block_x, block_y, block_shape = (INIT_BLOCK_X, INIT_BLOCK_Y, BLOCK_SHAPES[random.randint(0, BLOCK_TYPES - 1)])
                    game_area = [[0] * 10 for i in range(20)]
                    score = 0
            elif game_state == GAME_STATE_RUN:
                if event.key == pygame.K_LEFT:
                    block_x -= BLOCK_SPEED
                elif event.key == pygame.K_RIGHT:
                    block_x += BLOCK_SPEED
                elif event.key == pygame.K_DOWN:
                    block_y += BLOCK_SPEED
                elif event.key == pygame.K_UP:
                    block_shape = [[block_shape[j][i] for j in range(len(block_shape))] for i in range(len(block_shape[0]))]
    # 游戏逻辑
    if game_state == GAME_STATE_RUN:
        block_x, block_y, block_shape = move_block(block_x, block_y + BLOCK_SPEED, block_shape)
        if block_y == INIT_BLOCK_Y and not can_move(block_x, block_y, block_shape):
            game_state = GAME_STATE_OVER
        else:
            block_x, block_y, block_shape = fix_block(block_x, block_y, block_shape)
            remove_row()
    # 绘制游戏窗口
    screen.fill((0, 0, 0))
    draw_game_area_border()
    draw_block()
    draw_game_area()
    draw_score()
    if game_state == GAME_STATE_OVER:
        draw_game_over()
    pygame.display.update()

这段代码使用了 Pygame 库，运行时需要先安装 Pygame 库。