用C++实现一个带界面的俄罗斯方块

要实现一个带界面的俄罗斯方块游戏，需要使用图形库来绘制游戏界面。在C语言中，常用的图形库包括SDL、OpenGL和GTK等。

以下是使用SDL库实现的俄罗斯方块游戏代码示例：

#include <stdio.h>
#include <SDL2/SDL.h>

#define SCREEN_WIDTH 640
#define SCREEN_HEIGHT 480
#define BLOCK_SIZE 20

int main(int argc, char *argv[]) {
    SDL_Window *window = NULL;
    SDL_Renderer *renderer = NULL;
    SDL_Surface *surface = NULL;
    SDL_Texture *texture = NULL;
    SDL_Event event;

    int quit = 0;
    int x = 0, y = 0;

    int blocks[7][4][4] = {
        // I
        {
            {0, 0, 0, 0},
            {1, 1, 1, 1},
            {0, 0, 0, 0},
            {0, 0, 0, 0}
        },
        // J
        {
            {1, 0, 0, 0},
            {1, 1, 1, 0},
            {0, 0, 0, 0},
            {0, 0, 0, 0}
        },
        // L
        {
            {0, 0, 1, 0},
            {1, 1, 1, 0},
            {0, 0, 0, 0},
            {0, 0, 0, 0}
        },
        // O
        {
            {1, 1, 0, 0},
            {1, 1, 0, 0},
            {0, 0, 0, 0},
            {0, 0, 0, 0}
        },
        // S
        {
            {0, 1, 1, 0},
            {1, 1, 0, 0},
            {0, 0, 0, 0},
            {0, 0, 0, 0}
        },
        // T
        {
            {0, 1, 0, 0},
            {1, 1, 1, 0},
            {0, 0, 0, 0},
            {0, 0, 0, 0}
        },
        // Z
        {
            {1, 1, 0, 0},
            {0, 1, 1, 0},
            {0, 0, 0, 0},
            {0, 0, 0, 0}
        }
    };

    int current_block[4][4] = {0};
    int current_block_type = rand() % 7;
    int current_block_x = 4;
    int current_block_y = 0;

    int board[20][10] = {0};

    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf("SDL_Init failed: %s\n", SDL_GetError());
        return 1;
    }

    window = SDL_CreateWindow("Tetris", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
    if (window == NULL) {
        printf("SDL_CreateWindow failed: %s\n", SDL_GetError());
        return 1;
    }

    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
    if (renderer == NULL) {
        printf("SDL_CreateRenderer failed: %s\n", SDL_GetError());
        return 1;
    }

    while (!quit) {
        while (SDL_PollEvent(&event)) {
            if (event.type == SDL_QUIT) {
                quit = 1;
            }
        }

        // 检测键盘输入
        const Uint8 *state = SDL_GetKeyboardState(NULL);
        if (state[SDL_SCANCODE_LEFT]) {
            if (current_block_x > 0) {
                current_block_x--;
            }
        }
        if (state[SDL_SCANCODE_RIGHT]) {
            if (current_block_x < 10 - 4) {
                current_block_x++;
            }
        }
        if (state[SDL_SCANCODE_DOWN]) {
            current_block_y++;
        }

        // 更新当前方块
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 4; j++) {
                current_block[i][j] = blocks[current_block_type][i][j];
            }
        }

        // 绘制游戏界面
        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
        SDL_RenderClear(renderer);

        for (int i = 0; i < 20; i++) {
            for (int j = 0; j < 10; j++) {
                if (board[i][j] != 0) {
                    SDL_Rect rect = {j * BLOCK_SIZE, i * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE};
                    SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
                    SDL_RenderFillRect(renderer, &rect);
                }
            }
        }

        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 4; j++) {
                if (current_block[i][j] != 0) {
                    SDL_Rect rect = {(current_block_x + j) * BLOCK_SIZE, (current_block_y + i) * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE};
                    SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
                    SDL_RenderFillRect(renderer, &rect);
                }
            }
        }

        SDL_RenderPresent(renderer);

        SDL_Delay(1000 / 60);
    }

    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}

该示例代码在SDL窗口中绘制游戏界面，并通过键盘输入控制方块的移动。具体实现过程中，需要设置游戏的方块类型、位置和状态，并在游戏界面中绘制方块和背景等元素。