编辑代码

#include <iostream>
#include <windows.h>
#include <conio.h>
using namespace std;
const int Width = 20;  // 游戏区域宽度
const int Height = 20; // 游戏区域高度
int board[Height][Width] = { 0 }; // 游戏区域
// 方块数据结构
struct Block
{
    int shape[4][4]; // 方块形状
    int x, y;        // 方块位置
} block;
void initBlock() // 初始化方块
{
    int shapes[7][4][4] = {
        { { 1,1,0,0 },{ 1,1,0,0 },{ 0,0,0,0 },{ 0,0,0,0 } }, // 口口
        { { 0,2,0,0 },{ 2,2,2,0 },{ 0,0,0,0 },{ 0,0,0,0 } }, // 工
        { { 3,0,0,0 },{ 3,3,3,0 },{ 0,0,0,0 },{ 0,0,0,0 } }, // L
        { { 0,0,4,0 },{ 4,4,4,0 },{ 0,0,0,0 },{ 0,0,0,0 } }, // J
        { { 0,5,5,0 },{ 5,5,0,0 },{ 0,0,0,0 },{ 0,0,0,0 } }, // 田
        { { 0,0,6,0 },{ 6,6,6,0 },{ 0,0,0,0 },{ 0,0,0,0 } }, // Z
        { { 7,7,0,0 },{ 0,7,7,0 },{ 0,0,0,0 },{ 0,0,0,0 } }  // 反Z
    };
    int rand_shape = rand() % 7;
    memcpy(&block.shape, &shapes[rand_shape], sizeof(block.shape));
    block.x = Width / 2 - 1;
    block.y = 0;
}
bool check(int x, int y) // 检查方块是否越界或与已有方块重合
{
    for (int i = 0; i < 4; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            if (block.shape[i][j] != 0 && (x + j < 0 || x + j >= Width || y + i >= Height || board[y + i][x + j] != 0))
            {
                return false;
            }
        }
    }
    return true;
}
void draw() // 绘制游戏区域和方块
{
    system("cls"); // 清屏
    for (int i = 0; i < Height; i++)
    {
        for (int j = 0; j < Width; j++)
        {
            if (board[i][j] == 0)
            {
                cout << "  ";
            }
            else
            {
                cout << "口";
            }
        }
        cout << endl;
    }
    for (int i = 0; i < 4; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            if (block.shape[i][j] != 0)
            {
                COORD pos = { (SHORT)(2 * (block.x + j)), (SHORT)(block.y + i) };
                SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
                cout << "口";
            }
        }
    }
}
void merge() // 将方块与已有方块合并
{
    for (int i = 0; i < 4; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            if (block.shape[i][j] != 0)
            {
                board[block.y + i][block.x + j] = block.shape[i][j];
            }
        }
    }
}
void checkLine() // 检测是否有满行
{
    for (int i = Height - 1; i >= 0; i--)
    {
        bool full = true;
        for (int j = 0; j < Width; j++)
        {
            if (board[i][j] == 0)
            {
                full = false;
                break;
            }
        }
        if (full)
        {
            for (int k = i; k > 0; k--)
            {
                memcpy(board[k], board[k - 1], sizeof(board[k]));
            }
            memset(board[0], 0, sizeof(board[0]));
            i++;
        }
    }
}
int main()
{
    srand((unsigned)time(NULL)); // 初始化随机数生成器
    while (true)
    {
        initBlock();
        while (true)
        {
            draw();
            Sleep(500); // 控制方块下落速度
            if (check(block.x, block.y + 1)) // 方块下落
            {
                block.y++;
            }
            else // 方块到达底部
            {
                merge();
                checkLine();
                break;
            }
            if (_kbhit()) // 检测键盘输入
            {
                int key = _getch();
                if (key == 'a' && check(block.x - 1, block.y)) // 左移
                {
                    block.x--;
                }
                else if (key == 'd' && check(block.x + 1, block.y)) // 右移
                {
                    block.x++;
                }
                else if (key == 'w') // 旋转
                {
                    Block tmp = block;
                    for (int i = 0; i < 4; i++)
                    {
                        for (int j = 0; j < 4; j++)
                        {
                            tmp.shape[j][3 - i] = block.shape[i][j];
                        }
                    }
                    if (check(block.x, block.y))
                    {
                        memcpy(&block.shape, &tmp.shape, sizeof(block.shape));
                    }
                }
                else if (key == 's') // 快速下落
                {
                    while (check(block.x, block.y + 1))
                    {
                        block.y++;
                    }
                }
            }
        }
    }
    return 0;
}