c++双人射击小游戏代码

以下是一个简单的 C++ 双人射击小游戏代码示例，使用了 Windows API 和 Winsock2 库来实现网络连接。注意：本代码仅供学习参考，不保证完全正确和稳定，使用时请自行测试和修改。

// 双人射击小游戏代码示例

#include <iostream>
#include <windows.h>
#include <winsock2.h>

using namespace std;

const int PORT = 9000;
const int BUF_SIZE = 1024;

// 定义玩家类
class Player {
public:
    Player(int x, int y) : posX(x), posY(y) {}
    int posX;
    int posY;
    void move(int dx, int dy) {
        posX += dx;
        posY += dy;
    }
};

// 初始化 Winsock2 库
void initWinsock() {
    WSADATA wsaData;
    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
        cerr << "WSAStartup failed." << endl;
        exit(1);
    }
}

// 创建服务器端套接字
SOCKET createServerSocket() {
    SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (serverSocket == INVALID_SOCKET) {
        cerr << "Failed to create socket." << endl;
        exit(1);
    }
    // 绑定端口号
    sockaddr_in serverAddr;
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_port = htons(PORT);
    serverAddr.sin_addr.s_addr = INADDR_ANY;
    if (bind(serverSocket, (sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
        cerr << "Failed to bind socket." << endl;
        closesocket(serverSocket);
        WSACleanup();
        exit(1);
    }
    // 监听连接请求
    if (listen(serverSocket, SOMAXCONN) == SOCKET_ERROR) {
        cerr << "Failed to listen to socket." << endl;
        closesocket(serverSocket);
        WSACleanup();
        exit(1);
    }
    return serverSocket;
}

// 创建客户端套接字
SOCKET createClientSocket(const char* ipAddr) {
    SOCKET clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (clientSocket == INVALID_SOCKET) {
        cerr << "Failed to create socket." << endl;
        exit(1);
    }
    // 连接服务器
    sockaddr_in serverAddr;
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_port = htons(PORT);
    if (inet_pton(AF_INET, ipAddr, &serverAddr.sin_addr) != 1) {
        cerr << "Invalid IP address." << endl;
        closesocket(clientSocket);
        WSACleanup();
        exit(1);
    }
    if (connect(clientSocket, (sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
        cerr << "Failed to connect to server." << endl;
        closesocket(clientSocket);
        WSACleanup();
        exit(1);
    }
    return clientSocket;
}

// 发送数据
void sendData(SOCKET socket, const char* data, int len) {
    int sentBytes = 0;
    while (sentBytes < len) {
        int ret = send(socket, data + sentBytes, len - sentBytes, 0);
        if (ret == SOCKET_ERROR) {
            cerr << "Failed to send data." << endl;
            closesocket(socket);
            WSACleanup();
            exit(1);
        }
        sentBytes += ret;
    }
}

// 接收数据
int recvData(SOCKET socket, char* buf) {
    int recvBytes = recv(socket, buf, BUF_SIZE, 0);
    if (recvBytes == SOCKET_ERROR) {
        cerr << "Failed to receive data." << endl;
        closesocket(socket);
        WSACleanup();
        exit(1);
    }
    buf[recvBytes] = '\0';
    return recvBytes;
}

// 主函数
int main() {
    // 初始化 Winsock2 库
    initWinsock();

    // 创建玩家
    Player player1(0, 0);
    Player player2(10, 10);

    // 创建服务器端套接字
    SOCKET serverSocket = createServerSocket();
    cout << "Waiting for player 2 to connect..." << endl;

    // 接受连接请求
    SOCKET clientSocket = accept(serverSocket, NULL, NULL);
    if (clientSocket == INVALID_SOCKET) {
        cerr << "Failed to accept connection." << endl;
        closesocket(serverSocket);
        WSACleanup();
        exit(1);
    }
    cout << "Player 2 connected." << endl;

    // 创建客户端套接字
    char ipAddr[BUF_SIZE];
    cout << "Please enter the IP address of player 1: ";
    cin >> ipAddr;
    SOCKET player1Socket = createClientSocket(ipAddr);
    cout << "Connected to player 1." << endl;

    // 进入游戏循环
    while (true) {
        // 向对方发送自己的位置
        char buf[BUF_SIZE];
        sprintf_s(buf, "%d %d", player1.posX, player1.posY);
        sendData(player2Socket, buf, strlen(buf));
        sprintf_s(buf, "%d %d", player2.posX, player2.posY);
        sendData(player1Socket, buf, strlen(buf));

        // 接受对方的位置
        int recvBytes = recvData(player2Socket, buf);
        int posX, posY;
        sscanf_s(buf, "%d %d", &posX, &posY);
        player2.move(posX - player2.posX, posY - player2.posY);
        recvBytes = recvData(player1Socket, buf);
        sscanf_s(buf, "%d %d", &posX, &posY);
        player1.move(posX - player1.posX, posY - player1.posY);

        // 显示当前状态
        system("cls");
        cout << "Player 1: (" << player1.posX << ", " << player1.posY << ")" << endl;
        cout << "Player 2: (" << player2.posX << ", " << player2.posY << ")" << endl;

        // 处理输入
        if (GetAsyncKeyState(VK_UP) & 0x8000) {
            player1.move(0, -1);
        }
        if (GetAsyncKeyState(VK_DOWN) & 0x8000) {
            player1.move(0, 1);
        }
        if (GetAsyncKeyState(VK_LEFT) & 0x8000) {
            player1.move(-1, 0);
        }
        if (GetAsyncKeyState(VK_RIGHT) & 0x8000) {
            player1.move(1, 0);
        }
        if (GetAsyncKeyState(VK_SPACE) & 0x8000) {
            // 射击
        }

        // 延时
        Sleep(50);
    }

    // 关闭套接字和 Winsock2 库
    closesocket(player1Socket);
    closesocket(player2Socket);
    closesocket(serverSocket);
    WSACleanup();

    return 0;
}