帮我编写俄罗斯方块代码

好的，我可以帮您提供一个简单的俄罗斯方块代码，您可以参考一下：

import pygame
import random

# 颜色定义
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)

# 初始化pygame
pygame.init()

# 设置游戏窗口大小
SIZE = (400, 500)
screen = pygame.display.set_mode(SIZE)

# 设置窗口标题
pygame.display.set_caption("俄罗斯方块")

# 定义方块大小
BLOCK_SIZE = 20

# 定义游戏区域大小
GAME_AREA_WIDTH = BLOCK_SIZE * 10
GAME_AREA_HEIGHT = BLOCK_SIZE * 20

# 定义游戏区域位置
GAME_AREA_X = (SIZE[0] - GAME_AREA_WIDTH) // 2
GAME_AREA_Y = (SIZE[1] - GAME_AREA_HEIGHT)

# 定义方块形状
SHAPE_I = [[[1, 1, 1, 1]],
           [[1], [1], [1], [1]]]

SHAPE_J = [[[0, 1], [0, 1], [1, 1]],
           [[1, 0, 0], [1, 1, 1]]]

SHAPE_L = [[[1, 0], [1, 0], [1, 1]],
           [[1, 1, 1], [1, 0, 0]]]

SHAPE_O = [[[1, 1], [1, 1]]]

SHAPE_S = [[[0, 1, 1], [1, 1, 0]],
           [[1, 0], [1, 1], [0, 1]]]

SHAPE_T = [[[0, 1, 0], [1, 1, 1]],
           [[1, 0], [1, 1], [1, 0]],
           [[1, 1, 1], [0, 1, 0]],
           [[0, 1], [1, 1], [0, 1]]]

SHAPE_Z = [[[1, 1, 0], [0, 1, 1]],
           [[0, 1], [1, 1], [1, 0]]]

# 定义所有方块形状
ALL_SHAPES = [SHAPE_I, SHAPE_J, SHAPE_L, SHAPE_O, SHAPE_S, SHAPE_T, SHAPE_Z]

# 定义方块颜色
SHAPE_COLORS = [GREEN, BLUE, RED, WHITE]

# 定义方块类型
SHAPE_TYPE_I = 0
SHAPE_TYPE_J = 1
SHAPE_TYPE_L = 2
SHAPE_TYPE_O = 3
SHAPE_TYPE_S = 4
SHAPE_TYPE_T = 5
SHAPE_TYPE_Z = 6

# 定义方块位置
BLOCK_X = GAME_AREA_X + GAME_AREA_WIDTH // 2 - BLOCK_SIZE // 2
BLOCK_Y = GAME_AREA_Y

# 定义方块变量
block_shape = None
block_type = None
block_color = None
block_x = None
block_y = None

# 定义游戏区域
game_area = [[0 for x in range(10)] for y in range(20)]

# 定义游戏状态
game_over = False

# 随机生成一个方块
def generate_block():
    global block_shape, block_type, block_color, block_x, block_y
    block_type = random.randint(0, 6)
    block_shape = random.choice(ALL_SHAPES[block_type])
    block_color = SHAPE_COLORS[block_type % len(SHAPE_COLORS)]
    block_x = BLOCK_X
    block_y = BLOCK_Y

# 检查方块是否超出游戏区域
def check_block_boundary():
    for y, row in enumerate(block_shape):
        for x, val in enumerate(row):
            if val and (block_x + x * BLOCK_SIZE < GAME_AREA_X or block_x + x * BLOCK_SIZE + BLOCK_SIZE > GAME_AREA_X + GAME_AREA_WIDTH or block_y + y * BLOCK_SIZE + BLOCK_SIZE > GAME_AREA_Y + GAME_AREA_HEIGHT):
                return False
    return True

# 检查方块是否与已有方块重叠
def check_block_overlap():
    for y, row in enumerate(block_shape):
        for x, val in enumerate(row):
            if val and game_area[(block_y - GAME_AREA_Y) // BLOCK_SIZE + y][(block_x - GAME_AREA_X) // BLOCK_SIZE + x]:
                return False
    return True

# 绘制游戏区域
def draw_game_area():
    for y, row in enumerate(game_area):
        for x, val in enumerate(row):
            if val:
                pygame.draw.rect(screen, SHAPE_COLORS[val % len(SHAPE_COLORS)], (GAME_AREA_X + x * BLOCK_SIZE, GAME_AREA_Y + y * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE))

# 绘制方块
def draw_block():
    for y, row in enumerate(block_shape):
        for x, val in enumerate(row):
            if val:
                pygame.draw.rect(screen, block_color, (block_x + x * BLOCK_SIZE, block_y + y * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE))

# 将方块放入游戏区域
def put_block_into_game_area():
    for y, row in enumerate(block_shape):
        for x, val in enumerate(row):
            if val:
                game_area[(block_y - GAME_AREA_Y) // BLOCK_SIZE + y][(block_x - GAME_AREA_X) // BLOCK_SIZE + x] = block_type + 1

# 消除满行
def remove_full_rows():
    for y in range(len(game_area)):
        if all(game_area[y]):
            for i in range(y, 0, -1):
                game_area[i] = game_area[i - 1][:]
            game_area[0] = [0] * 10

# 检查游戏是否结束
def check_game_over():
    return any(game_area[0])

# 主循环
generate_block()
clock = pygame.time.Clock()
while not game_over:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT and block_x > GAME_AREA_X:
                block_x -= BLOCK_SIZE
                if not check_block_boundary() or not check_block_overlap():
                    block_x += BLOCK_SIZE
            elif event.key == pygame.K_RIGHT and block_x + len(block_shape[0]) * BLOCK_SIZE < GAME_AREA_X + GAME_AREA_WIDTH:
                block_x += BLOCK_SIZE
                if not check_block_boundary() or not check_block_overlap():
                    block_x -= BLOCK_SIZE
            elif event.key == pygame.K_DOWN and block_y + len(block_shape) * BLOCK_SIZE < GAME_AREA_Y + GAME_AREA_HEIGHT:
                block_y += BLOCK_SIZE
                if not check_block_boundary() or not check_block_overlap():
                    block_y -= BLOCK_SIZE
            elif event.key == pygame.K_UP:
                old_shape = block_shape
                block_shape = [[block_shape[j][i] for j in range(len(block_shape))] for i in range(len(block_shape[0]) - 1, -1, -1)]
                if not check_block_boundary() or not check_block_overlap():
                    block_shape = old_shape

    # 更新游戏状态
    if block_y + len(block_shape) * BLOCK_SIZE < GAME_AREA_Y + GAME_AREA_HEIGHT:
        block_y += BLOCK_SIZE
        if not check_block_boundary() or not check_block_overlap():
            block_y -= BLOCK_SIZE
            put_block_into_game_area()
            remove_full_rows()
            generate_block()

    # 绘制游戏界面
    screen.fill(BLACK)
    draw_game_area()
    draw_block()
    pygame.display.flip()

    # 控制游戏帧率
    clock.tick(10)

# 退出游戏
pygame.quit()

代码注释中已经解释了每部分的功能，如果您还有需要了解的地方，可以随时提出。