Qt界面软件控制Unity中物体旋转移动（QT端）

Qt C++服务端

通过QT编写的界面软件，向unity发送控制命令，实现qt对unity场景的控制。主要是用C++做服务器，unity做客户端实现TCP网络通信。这篇博客是QT部分，unity部分见另一篇博客。

https://blog.csdn.net/weixin_42521239/article/details/96173965

建立一个Qt的GUI项目，在界面上放一个label显示连接状态，两个button作为指令发送控制。

Unity_Qt.pro 

关键就是要加一句  

QT       += network

#-------------------------------------------------
#
# Project created by QtCreator 2019-07-16T15:44:37
#
#-------------------------------------------------

QT       += core gui
QT       += network

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = Unity_Qt
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which has been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0


SOURCES += \
        main.cpp \
        widget.cpp

HEADERS += \
        widget.h

FORMS += \
        widget.ui

widget.h

#ifndef WIDGET_H
#define WIDGET_H
 
#include 
 
class QTcpServer;//前向声明
class QTcpSocket;
 
namespace Ui {
class Widget;
}
 
class Widget : public QWidget
{
    Q_OBJECT
 
public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();
 
private:
    Ui::Widget *ui;
 
private:
    QString statusText; //状态信息
    QTcpServer *tcpServer; //服务器
    QTcpSocket *clientTcpSocket; //客户端socket
    void SocketSend(QString sendStr);
private slots:
    void SocketConnet();
    void SocketReceive();
    void on_leftBtn_clicked();
    void on_rightBtn_clicked();
};
 
#endif // WIDGET_H

widget.cpp

#include 
#include 
#include 
#include 
#include "widget.h"
#include "ui_widget.h"
 
Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    //初始化server并监听
    tcpServer=new QTcpServer(this); //qt自己内存管理
    if(!tcpServer->listen(QHostAddress::Any,6666)) //监听所有网络地址，端口6666
        qDebug()<errorString();
    statusText=statusText+"wait for connecting..."+"\n";
    ui->statusLabel->setText(statusText);
    //绑定信号槽，当有连接时作出反应
    connect(tcpServer,SIGNAL(newConnection()),this,SLOT(SocketConnet()));
}
 
void Widget::SocketConnet()
{
    //获得client socket
    clientTcpSocket=tcpServer->nextPendingConnection();
    //绑定信号槽，接收数据，并且当连接关闭是删除连接
    connect(clientTcpSocket,SIGNAL(readyRead()),this,SLOT(SocketReceive()));
    connect(clientTcpSocket,SIGNAL(disconnected()),clientTcpSocket,SLOT(deleteLater()));
    //显示客户端连接信息
    QString clientIp=clientTcpSocket->peerAddress().toString();
    QString clientPort=QString::number(clientTcpSocket->peerPort());
    statusText=statusText+"conneted with "+clientIp+":"+clientPort+"\n";
    ui->statusLabel->setText(statusText);
}
 
void Widget::SocketSend(QString sendStr)
{
    clientTcpSocket->write(sendStr.toStdString().c_str());
}
 
void Widget::SocketReceive()
{
    //接收数据并显示，字节转换成了字符串
    QString recvStr=clientTcpSocket->readAll();
    statusText=statusText+recvStr+"\n";
    ui->statusLabel->setText(statusText);
    //经处理后发送回去
    SocketSend("From server: "+recvStr);
}
 
Widget::~Widget()
{
    delete ui;
}
 
//发送unity物体左旋消息
void Widget::on_leftBtn_clicked()
{
    SocketSend("leftrotate");
}
 
//发送unity物体右旋消息
void Widget::on_rightBtn_clicked()
{
    SocketSend("rightrotate");
}

main.cpp

#include "widget.h"
#include 

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();

    return a.exec();
}

运行结果如下

这篇博客的代码已经上传到CSDN上了，程序可以直接运行，有需要的可以下载，链接如下

https://download.csdn.net/download/weixin_42521239/11368413

如果没有积分的小伙伴也可以在评论中留下你的邮箱，我稍后发给你。