Method launchInstance

launcher/LaunchController.cpp:317–367

}

void LaunchController::launchInstance()
{
    Q_ASSERT_X(m_instance != NULL, "launchInstance", "instance is NULL");
    Q_ASSERT_X(m_session.get() != nullptr, "launchInstance", "session is NULL");

    if (!m_instance->reloadSettings()) {
        QMessageBox::critical(m_parentWidget, tr("Error!"), tr("Couldn't load the instance profile."));
        emitFailed(tr("Couldn't load the instance profile."));
        return;
    }

    m_launcher = m_instance->createLaunchTask(m_session, m_targetToJoin);
    if (!m_launcher) {
        emitFailed(tr("Couldn't instantiate a launcher."));
        return;
    }

    auto console = qobject_cast<InstanceWindow*>(m_parentWidget);
    auto showConsole = m_instance->settings()->get("ShowConsole").toBool();
    if (!console && showConsole) {
        APPLICATION->showInstanceWindow(m_instance);
    }
    connect(m_launcher.get(), &LaunchTask::readyForLaunch, this, &LaunchController::readyForLaunch);
    connect(m_launcher.get(), &LaunchTask::succeeded, this, &LaunchController::onSucceeded);
    connect(m_launcher.get(), &LaunchTask::failed, this, &LaunchController::onFailed);
    connect(m_launcher.get(), &LaunchTask::requestProgress, this, &LaunchController::onProgressRequested);

    // Prepend Online and Auth Status
    QString online_mode;
    if (m_session->wants_online) {
        online_mode = "online";

        // Prepend Server Status
        QStringList servers = { "login.microsoftonline.com", "session.minecraft.net", "textures.minecraft.net", "api.mojang.com" };

        m_launcher->prependStep(makeShared<PrintServers>(m_launcher.get(), servers));
    } else {
        online_mode = m_demo ? "demo" : "offline";
    }

    m_launcher->prependStep(
        makeShared<TextPrint>(m_launcher.get(), "Launched instance in " + online_mode + " mode\n", MessageLevel::Launcher));

    // Prepend Version
    {
        auto versionString = QString("%1 version: %2 (%3)")
                                 .arg(BuildConfig.LAUNCHER_DISPLAYNAME, BuildConfig.printableVersionString(), BuildConfig.BUILD_PLATFORM);
        m_launcher->prependStep(makeShared<TextPrint>(m_launcher.get(), versionString + "\n\n", MessageLevel::Launcher));
    }
    m_launcher->start();
}

void LaunchController::readyForLaunch()
{