gamehost.cpp

//------------------------------------------------------------------------------
// gamehost.cpp
//------------------------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301  USA
//
//------------------------------------------------------------------------------
// Copyright (C) 2013 "Zalewa" <zalewapl@gmail.com>
//------------------------------------------------------------------------------
#include "gamehost.h"

#include "apprunner.h"
#include "commandlinetokenizer.h"
#include "configuration/doomseekerconfig.h"
#include "gamedemo.h"
#include "ini/inisection.h"
#include "ini/inivariable.h"
#include "plugins/engineplugin.h"
#include "serverapi/gamecreateparams.h"
#include "serverapi/message.h"
#include "serverapi/serverstructs.h"
#include "templatedpathresolver.h"
#include <cassert>
#include <QFileInfo>
#include <QStringList>

#define BAIL_ON_ERROR(method) \
        { \
                method; \
                if (d->message.isError()) \
                { \
                        return; \
                } \
        }

DClass<GameHost>
{
public:
        QString argBexLoading;
        QString argDehLoading;
        QString argIwadLoading;
        QString argOptionalWadLoading;
        QString argPort;
        QString argPwadLoading;
        QString argDemoPlayback;
        QString argDemoRecord;
        QString argServerLaunch;

        DemoStore demoStore;
        CommandLineInfo *currentCmdLine;
        Message message;
        GameCreateParams params;
        EnginePlugin *plugin;

        void (GameHost::*addIwad)();
        void (GameHost::*addPwads)();
        void (GameHost::*addDMFlags)();
        void (GameHost::*addGlobalGameCustomParameters)();
};

DPointered(GameHost)

GameHost::GameHost(EnginePlugin *plugin)
{
        d->argBexLoading = "-deh";
        d->argDehLoading = "-deh";
        d->argIwadLoading = "-iwad";
        d->argOptionalWadLoading = "-file";
        d->argPort = "-port";
        d->argPwadLoading = "-file";
        d->argDemoPlayback = "-playdemo";
        d->argDemoRecord = "-record";
        d->currentCmdLine = nullptr;
        d->plugin = plugin;
        d->demoStore = DemoStore();

        set_addIwad(&GameHost::addIwad_default);
        set_addPwads(&GameHost::addPwads_default);
        set_addDMFlags(&GameHost::addDMFlags_default);
        set_addGlobalGameCustomParameters(&GameHost::addGlobalGameCustomParameters_default);
}

GameHost::~GameHost()
{
}

POLYMORPHIC_DEFINE(void, GameHost, addIwad, (), ())
POLYMORPHIC_DEFINE(void, GameHost, addPwads, (), ())
POLYMORPHIC_DEFINE(void, GameHost, addDMFlags, (), ())
POLYMORPHIC_DEFINE(void, GameHost, addGlobalGameCustomParameters, (), ())

void GameHost::addCustomParameters()
{
        args().append(params().customParameters());
}

void GameHost::addDemoPlaybackIfApplicable()
{
        if (params().hostMode() == GameCreateParams::Demo)
        {
                args() << argForDemoPlayback();
                args() << params().demoPath();
        }
}

void GameHost::addDemoRecordIfApplicable()
{
        if (params().hostMode() == GameCreateParams::Offline
                && params().demoRecord() != DemoRecord::NoDemo)
        {
                args() << argForDemoRecord();
                args() << params().demoPath();
        }
}

void GameHost::addDMFlags_default()
{
}

void GameHost::addExtra()
{
}

void GameHost::addGlobalGameCustomParameters_default()
{
        IniSection config = gConfig.iniSectionForPlugin(plugin());
        QString customParameters = config["CustomParameters"];
        CommandLineTokenizer tokenizer;
        args() << tokenizer.tokenize(customParameters);
}

void GameHost::addIwad_default()
{
        const QString &iwadPath = params().iwadPath();

        if (iwadPath.isEmpty())
        {
                setMessage(Message::customError(tr("IWAD is not set")));
                return;
        }

        QFileInfo fi(gDoomseekerTemplatedPathResolver().resolve(iwadPath));

        if (!fi.isFile())
        {
                QString error = tr("IWAD Path error:\n\"%1\" doesn't exist or is a directory!").arg(iwadPath);
                setMessage(Message::customError(error));
        }

        args() << argForIwadLoading() << fi.absoluteFilePath();
}

void GameHost::addPwads_default()
{
        verifyPwadPaths();
        for (int i = 0; i < params().pwadsPaths().size(); ++i)
        {
                const QString &pwad = params().pwadsPaths()[i];
                QFileInfo fileInfo(gDoomseekerTemplatedPathResolver().resolve(pwad));
                args() << fileLoadingPrefix(i) << fileInfo.absoluteFilePath();
        }
}

void GameHost::addPwads_prefixOnce()
{
        verifyPwadPaths();
        QMap<QString, QStringList> groups;
        for (int i = 0; i < params().pwadsPaths().size(); ++i)
        {
                const QString &pwad = params().pwadsPaths()[i];
                QString prefix = fileLoadingPrefix(i);
                groups[prefix] << pwad;
        }
        for (const QString &prefix : groups.keys())
        {
                args() << prefix;
                for (const QString &file : groups[prefix])
                {
                        QFileInfo fileInfo(gDoomseekerTemplatedPathResolver().resolve(file));
                        args() << fileInfo.absoluteFilePath();
                }
        }
}

QString GameHost::fileLoadingPrefix(int index) const
{
        const QString &pwad = params().pwadsPaths()[index];
        bool optional = false;
        if (params().pwadsOptional().size() > index)
        {
                optional = params().pwadsOptional()[index];
        }

        if (pwad.toLower().endsWith(".deh"))
        {
                return argForDehLoading();
        }
        else if (pwad.toLower().endsWith(".bex"))
        {
                return argForBexLoading();
        }

        if (optional)
                return argForOptionalWadLoading();
        return argForPwadLoading();
}

const QString &GameHost::argForBexLoading() const
{
        return d->argBexLoading;
}

const QString &GameHost::argForDehLoading() const
{
        return d->argDehLoading;
}

const QString &GameHost::argForIwadLoading() const
{
        return d->argIwadLoading;
}

const QString &GameHost::argForOptionalWadLoading() const
{
        return d->argOptionalWadLoading;
}

const QString &GameHost::argForPort() const
{
        return d->argPort;
}

const QString &GameHost::argForPwadLoading() const
{
        return d->argPwadLoading;
}

const QString &GameHost::argForDemoPlayback() const
{
        return d->argDemoPlayback;
}

const QString &GameHost::argForDemoRecord() const
{
        return d->argDemoRecord;
}

const QString &GameHost::argForServerLaunch() const
{
        return d->argServerLaunch;
}

QStringList &GameHost::args()
{
        return d->currentCmdLine->args;
}

void GameHost::createCommandLineArguments()
{
        BAIL_ON_ERROR(addGlobalGameCustomParameters());
        BAIL_ON_ERROR(addIwad());
        BAIL_ON_ERROR(addPwads());

        // Port
        if (params().hostMode() == GameCreateParams::Host && params().port() > 0)
        {
                args() << argForPort() << QString::number(params().port());
        }

        // CVars
        const QList<GameCVar> &cvars = params().cvars();
        for (const GameCVar &c : cvars)
        {
                if (c.value().type() == QVariant::Bool)
                {
                        // Games like their bools passed in as 0/1 numbers.
                        args() << c.command() << QString::number(c.valueInt());
                }
                else
                {
                        args() << c.command() << c.valueString();
                }
        }

        if (params().hostMode() == GameCreateParams::Host)
        {
                // Some games may not offer such argument.
                if (!argForServerLaunch().isEmpty())
                {
                        args() << argForServerLaunch();
                }
        }

        BAIL_ON_ERROR(addDMFlags());
        BAIL_ON_ERROR(addExtra());
        BAIL_ON_ERROR(addCustomParameters());

        addDemoPlaybackIfApplicable();
        addDemoRecordIfApplicable();
        saveDemoMetaData();
}

Message GameHost::createHostCommandLine(const GameCreateParams &params, CommandLineInfo &cmdLine)
{
        d->message = Message();
        d->currentCmdLine = &cmdLine;
        d->params = params;

        args().clear();

        setupGamePaths();
        if (d->message.isError())
        {
                return d->message;
        }

        createCommandLineArguments();
        return d->message;
}

Message GameHost::host(const GameCreateParams &params)
{
        CommandLineInfo cmdLine;

        Message message = createHostCommandLine(params, cmdLine);
        if (!message.isIgnore())
        {
                return message;
        }

        #ifdef Q_OS_WIN32
        const bool WRAP_IN_SSS_CONSOLE = false;
        #else
        const bool WRAP_IN_SSS_CONSOLE = params.hostMode() == GameCreateParams::Host;
        #endif

        if (WRAP_IN_SSS_CONSOLE)
        {
                QIcon icon;
                if (plugin() != nullptr)
                {
                        icon = plugin()->icon();
                }
                AppRunner::runExecutableWrappedInStandardServerConsole(icon, cmdLine);
                return Message();
        }
        else
        {
                return AppRunner::runExecutable(cmdLine);
        }
}

const GameCreateParams &GameHost::params() const
{
        return d->params;
}

EnginePlugin *GameHost::plugin() const
{
        return d->plugin;
}

void GameHost::saveDemoMetaData()
{
        if (params().demoRecord() == DemoRecord::Managed)
        {
                d->demoStore.saveDemoMetaData(params().demoPath(), *plugin(),
                        params().iwadName(), params().pwads(), false);
        }
}

void GameHost::setArgForBexLoading(const QString &arg)
{
        d->argBexLoading = arg;
}

void GameHost::setArgForDehLoading(const QString &arg)
{
        d->argDehLoading = arg;
}

void GameHost::setArgForIwadLoading(const QString &arg)
{
        d->argIwadLoading = arg;
}

void GameHost::setArgForOptionalWadLoading(const QString &arg)
{
        d->argOptionalWadLoading = arg;
}

void GameHost::setArgForPort(const QString &arg)
{
        d->argPort = arg;
}

void GameHost::setArgForPwadLoading(const QString &arg)
{
        d->argPwadLoading = arg;
}

void GameHost::setArgForDemoPlayback(const QString &arg)
{
        d->argDemoPlayback = arg;
}

void GameHost::setArgForDemoRecord(const QString &arg)
{
        d->argDemoRecord = arg;
}

void GameHost::setArgForServerLaunch(const QString &arg)
{
        d->argServerLaunch = arg;
}

void GameHost::setMessage(const Message &message)
{
        d->message = message;
}

void GameHost::setupGamePaths()
{
        const QString &exePath = params().executablePath();
        if (exePath.trimmed().isEmpty())
        {
                setMessage(Message::customError(tr("The game executable is not set.")));
                return;
        }

        QFileInfo fileInfo(gDoomseekerTemplatedPathResolver().resolve(exePath));
        if (!fileInfo.isFile() && !fileInfo.isBundle())
        {
                QString error = tr("The executable\n%1\ndoesn't exist or is not a file.")
                        .arg(fileInfo.filePath());
                setMessage(Message::customError(error));
                return;
        }
        d->currentCmdLine->executable = fileInfo;
        d->currentCmdLine->applicationDir = fileInfo.dir();
}

bool GameHost::verifyPwadPaths()
{
        for (const QString &pwad : params().pwadsPaths())
        {
                QFileInfo fi(gDoomseekerTemplatedPathResolver().resolve(pwad));
                if (!fi.exists())
                {
                        QString error = tr("PWAD path error:\n\"%1\" doesn't exist!").arg(pwad);
                        setMessage(Message::customError(error));
                        return false;
                }
        }
        return true;
}