用Python写一个俄罗斯方块

好的，我可以帮助您用Python写一个俄罗斯方块。以下是示例代码：

import pygame
import random

# 定义常量
SCREEN_WIDTH = 320
SCREEN_HEIGHT = 640
BLOCK_SIZE = 20
BLOCK_COLORS = [(0, 0, 255), (0, 255, 0), (255, 0, 0), (255, 255, 0), (0, 255, 255), (255, 0, 255), (255, 255, 255)]

# 初始化 pygame
pygame.init()

# 创建游戏窗口
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("俄罗斯方块")

# 定义方块类
class Block():
    def __init__(self):
        self.x = SCREEN_WIDTH // 2
        self.y = 0
        self.color = random.choice(BLOCK_COLORS)
        self.shape = random.choice(["I", "O", "T", "S", "Z", "J", "L"])
        if self.shape == "I":
            self.cells = [(self.x, self.y), (self.x, self.y + BLOCK_SIZE), (self.x, self.y + BLOCK_SIZE * 2), (self.x, self.y + BLOCK_SIZE * 3)]
        elif self.shape == "O":
            self.cells = [(self.x, self.y), (self.x + BLOCK_SIZE, self.y), (self.x, self.y + BLOCK_SIZE), (self.x + BLOCK_SIZE, self.y + BLOCK_SIZE)]
        elif self.shape == "T":
            self.cells = [(self.x, self.y), (self.x - BLOCK_SIZE, self.y + BLOCK_SIZE), (self.x, self.y + BLOCK_SIZE), (self.x + BLOCK_SIZE, self.y + BLOCK_SIZE)]
        elif self.shape == "S":
            self.cells = [(self.x + BLOCK_SIZE, self.y), (self.x, self.y), (self.x, self.y + BLOCK_SIZE), (self.x - BLOCK_SIZE, self.y + BLOCK_SIZE)]
        elif self.shape == "Z":
            self.cells = [(self.x - BLOCK_SIZE, self.y), (self.x, self.y), (self.x, self.y + BLOCK_SIZE), (self.x + BLOCK_SIZE, self.y + BLOCK_SIZE)]
        elif self.shape == "J":
            self.cells = [(self.x - BLOCK_SIZE, self.y), (self.x - BLOCK_SIZE, self.y + BLOCK_SIZE), (self.x, self.y + BLOCK_SIZE), (self.x + BLOCK_SIZE, self.y + BLOCK_SIZE)]
        else:
            self.cells = [(self.x + BLOCK_SIZE, self.y), (self.x + BLOCK_SIZE, self.y + BLOCK_SIZE), (self.x, self.y + BLOCK_SIZE), (self.x - BLOCK_SIZE, self.y + BLOCK_SIZE)]

    def move(self, dx, dy):
        self.x += dx
        self.y += dy
        for i in range(len(self.cells)):
            self.cells[i] = (self.cells[i][0] + dx, self.cells[i][1] + dy)

    def rotate(self):
        if self.shape == "O":
            return
        center = self.cells[1]
        for i in range(len(self.cells)):
            x, y = self.cells[i]
            x -= center[0]
            y -= center[1]
            x, y = -y, x
            x += center[0]
            y += center[1]
            self.cells[i] = (x, y)

    def draw(self):
        for cell in self.cells:
            pygame.draw.rect(screen, self.color, (cell[0], cell[1], BLOCK_SIZE, BLOCK_SIZE))

    def check_collisions(self):
        for cell in self.cells:
            x, y = cell
            if x < 0 or x >= SCREEN_WIDTH or y >= SCREEN_HEIGHT:
                return True
        return False

    def check_overlap(self, other_cells):
        for cell in self.cells:
            if cell in other_cells:
                return True
        return False

    def fix(self, fixed_cells):
        for cell in self.cells:
            fixed_cells.append(cell)

# 在游戏循环中，调用方块类的方法
def game_loop():
    clock = pygame.time.Clock()
    game_over = False
    fixed_cells = []
    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:
                    block.move(-BLOCK_SIZE, 0)
                    if block.check_collisions() or block.check_overlap(fixed_cells):
                        block.move(BLOCK_SIZE, 0)
                elif event.key == pygame.K_RIGHT:
                    block.move(BLOCK_SIZE, 0)
                    if block.check_collisions() or block.check_overlap(fixed_cells):
                        block.move(-BLOCK_SIZE, 0)
                elif event.key == pygame.K_DOWN:
                    block.move(0, BLOCK_SIZE)
                    if block.check_collisions() or block.check_overlap(fixed_cells):
                        block.move(0, -BLOCK_SIZE)
                        block.fix(fixed_cells)
                        block = Block()
                elif event.key == pygame.K_UP:
                    block.rotate()

        # 绘制背景
        screen.fill((0, 0, 0))

        # 绘制固定方块
        for cell in fixed_cells:
            pygame.draw.rect(screen, (128, 128, 128), (cell[0], cell[1], BLOCK_SIZE, BLOCK_SIZE))

        # 绘制当前方块
        block.draw()

        # 刷新屏幕
        pygame.display.flip()

        # 控制帧数
        clock.tick(10)

# 启动游戏
block = Block()
game_loop()

# 退出游戏
pygame.quit()

希望代码可以帮助到您！