AppContext.cpp

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/*
    This source file is part of Rigs of Rods
    Copyright 2005-2012 Pierre-Michel Ricordel
    Copyright 2007-2012 Thomas Fischer
    Copyright 2013-2020 Petr Ohlidal
 
    For more information, see http://www.rigsofrods.org/
 
    Rigs of Rods is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License version 3, as
    published by the Free Software Foundation.
 
    Rigs of Rods 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 General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with Rigs of Rods. If not, see <http://www.gnu.org/licenses/>.
*/
 
#include "AppContext.h"
 
#include "AdvancedScreen.h"
#include "Actor.h"
#include "CameraManager.h"
#include "ChatSystem.h"
#include "Console.h"
#include "ContentManager.h"
#include "DashBoardManager.h"
#include "Engine.h"
#include "ErrorUtils.h"
#include "GameContext.h"
#include "GUIManager.h"
#include "GUI_LoadingWindow.h"
#include "GUI_MainSelector.h"
#include "GUI_MultiplayerClientList.h"
#include "GUI_MultiplayerSelector.h"
#include "InputEngine.h"
#include "Language.h"
#include "PlatformUtils.h"
#include "RoRVersion.h"
#include "OverlayWrapper.h"
 
#ifdef USE_ANGELSCRIPT
#    include "ScriptEngine.h"
#endif
 
#ifdef _WIN32
#   include <windows.h>
#endif
 
#include <iomanip>
#include <sstream>
#include <string>
#include <ctime>
 
using namespace RoR;
 
// --------------------------
// Input handling
 
bool AppContext::SetUpInput()
{
    App::CreateInputEngine();
    App::GetInputEngine()->SetMouseListener(this);
    App::GetInputEngine()->SetKeyboardListener(this);
    App::GetInputEngine()->SetJoystickListener(this);
 
    if (App::io_ffb_enabled->getBool())
    {
        m_force_feedback.Setup();
    }
    return true;
}
 
bool AppContext::mouseMoved(const OIS::MouseEvent& arg) // overrides OIS::MouseListener
{
    App::GetGuiManager()->WakeUpGUI();
    App::GetGuiManager()->GetImGui().InjectMouseMoved(arg);
    App::GetInputEngine()->processMouseMotionEvent(arg);
 
    if (!ImGui::GetIO().WantCaptureMouse) // true if mouse is over any window
    {
        if (!App::GetOverlayWrapper() || !App::GetOverlayWrapper()->handleMouseMoved()) // update the old airplane / autopilot gui
        {
            if (!App::GetCameraManager()->handleMouseMoved())
            {
                App::GetGameContext()->GetSceneMouse().handleMouseMoved();
            }
        }
    }
 
    return true;
}
 
bool AppContext::mousePressed(const OIS::MouseEvent& arg, OIS::MouseButtonID _id) // overrides OIS::MouseListener
{
    App::GetGuiManager()->WakeUpGUI();
    App::GetGuiManager()->GetImGui().SetMouseButtonState(_id, /*down:*/true);
    App::GetInputEngine()->processMousePressEvent(arg, _id);
 
    if (!ImGui::GetIO().WantCaptureMouse) // true if mouse is over any window
    {
        if (!App::GetOverlayWrapper() || !App::GetOverlayWrapper()->handleMousePressed()) // update the old airplane / autopilot gui
        {
            if (App::app_state->getEnum<AppState>() == AppState::SIMULATION)
            {
                App::GetGameContext()->GetSceneMouse().handleMousePressed();
                App::GetCameraManager()->handleMousePressed();
            }
        }
    }
 
    return true;
}
 
bool AppContext::mouseReleased(const OIS::MouseEvent& arg, OIS::MouseButtonID _id) // overrides OIS::MouseListener
{
    App::GetGuiManager()->WakeUpGUI();
    App::GetGuiManager()->GetImGui().SetMouseButtonState(_id, /*down:*/false);
    App::GetInputEngine()->processMouseReleaseEvent(arg, _id);
 
    if (!ImGui::GetIO().WantCaptureMouse) // true if mouse is over any window
    {
        if (!App::GetOverlayWrapper() || !App::GetOverlayWrapper()->handleMouseReleased()) // update the old airplane / autopilot gui
        {
            if (App::app_state->getEnum<AppState>() == AppState::SIMULATION)
            {
                App::GetGameContext()->GetSceneMouse().handleMouseReleased();
            }
        }
    }
 
    return true;
}
 
bool AppContext::keyPressed(const OIS::KeyEvent& arg)
{
    App::GetGuiManager()->GetImGui().InjectKeyPressed(arg);
 
    if (!App::GetGuiManager()->IsGuiCaptureKeyboardRequested() &&
        !ImGui::GetIO().WantCaptureKeyboard)
    {
        App::GetInputEngine()->ProcessKeyPress(arg);
    }
 
    return true;
}
 
bool AppContext::keyReleased(const OIS::KeyEvent& arg)
{
    App::GetGuiManager()->GetImGui().InjectKeyReleased(arg);
 
    if (!App::GetGuiManager()->IsGuiCaptureKeyboardRequested() &&
        !ImGui::GetIO().WantCaptureKeyboard)
    {
        App::GetInputEngine()->ProcessKeyRelease(arg);
    }
    else if (App::GetInputEngine()->isKeyDownEffective(arg.key))
    {
        // If capturing is requested, still pass release events for already-pressed keys.
        App::GetInputEngine()->ProcessKeyRelease(arg);
    }
 
    return true;
}
 
bool AppContext::buttonPressed(const OIS::JoyStickEvent& arg, int)  { App::GetInputEngine()->ProcessJoystickEvent(arg); return true; }
bool AppContext::buttonReleased(const OIS::JoyStickEvent& arg, int) { App::GetInputEngine()->ProcessJoystickEvent(arg); return true; }
bool AppContext::axisMoved(const OIS::JoyStickEvent& arg, int)      { App::GetInputEngine()->ProcessJoystickEvent(arg); return true; }
bool AppContext::sliderMoved(const OIS::JoyStickEvent& arg, int)    { App::GetInputEngine()->ProcessJoystickEvent(arg); return true; }
bool AppContext::povMoved(const OIS::JoyStickEvent& arg, int)       { App::GetInputEngine()->ProcessJoystickEvent(arg); return true; }
 
void AppContext::windowResized(Ogre::RenderWindow* rw)
{
    App::GetInputEngine()->windowResized(rw); // Update mouse area
    if (App::GetOverlayWrapper())
    {
        App::GetOverlayWrapper()->windowResized();
    }
    if (App::sim_state->getEnum<AppState>() == RoR::AppState::SIMULATION)
    {
        for (ActorPtr& actor: App::GetGameContext()->GetActorManager()->GetActors())
        {
            actor->ar_dashboard->windowResized();
        }
    }
}
 
void AppContext::windowFocusChange(Ogre::RenderWindow* rw)
{
    // If you alt+TAB out of the window while any mouse button is down, OIS will not release it until you click in the window again.
    // See https://github.com/RigsOfRods/rigs-of-rods/issues/2468
    // To work around, we reset all internal mouse button states here and pay attention not to get them polluted by OIS again.
    App::GetGuiManager()->GetImGui().ResetAllMouseButtons();
    // Same applies to keyboard keys - reset them manually otherwise OIS will hold them 'down' the entire time.
    App::GetInputEngine()->resetKeysAndMouseButtons();
}
 
// --------------------------
// Rendering
 
void AppContext::SetRenderWindowIcon(Ogre::RenderWindow* rw)
{
#ifdef _WIN32
    size_t hWnd = 0;
    rw->getCustomAttribute("WINDOW", &hWnd);
 
    char buf[MAX_PATH];
    ::GetModuleFileNameA(0, (LPCH)&buf, MAX_PATH);
 
    HINSTANCE instance = ::GetModuleHandleA(buf);
    HICON hIcon = ::LoadIconA(instance, MAKEINTRESOURCEA(101));
    if (hIcon)
    {
        ::SendMessageA((HWND)hWnd, WM_SETICON, 1, (LPARAM)hIcon);
        ::SendMessageA((HWND)hWnd, WM_SETICON, 0, (LPARAM)hIcon);
    }
#endif // _WIN32
}
 
bool AppContext::SetUpRendering()
{
    // Create 'OGRE root' facade
    // * leave 'plugins' param empty, we load manually below
    // * note file 'ogre.cfg' isn't read immediatelly but only after calling 'restoreConfig()' below.
    std::string log_filepath = PathCombine(App::sys_logs_dir->getStr(), "RoR.log");
    std::string cfg_filepath = PathCombine(App::sys_config_dir->getStr(), "ogre.cfg");
    LOG(fmt::format("[RoR|Startup|Rendering] Creating OGRE renderer Root object, config='{}'", cfg_filepath));
    m_ogre_root = new Ogre::Root("", cfg_filepath, log_filepath);
 
    // load OGRE plugins manually
#ifdef _DEBUG
    std::string plugins_path = PathCombine(RoR::App::sys_process_dir->getStr(), "plugins_d.cfg");
#else
    std::string plugins_path = PathCombine(RoR::App::sys_process_dir->getStr(), "plugins.cfg");
#endif
    LOG(fmt::format("[RoR|Startup|Rendering] Loading OGRE renderer plugins config '{}'.", plugins_path));
    try
    {
        Ogre::ConfigFile cfg;
        cfg.load(plugins_path);
        std::string plugin_dir = cfg.getSetting("PluginFolder", /*section=*/"", /*default=*/App::sys_process_dir->getStr());
        Ogre::StringVector plugins = cfg.getMultiSetting("Plugin");
        for (Ogre::String plugin_filename: plugins)
        {
            try
            {
                m_ogre_root->loadPlugin(PathCombine(plugin_dir, plugin_filename));
            }
            catch (Ogre::Exception&) {} // Logged by OGRE
        }
    }
    catch (Ogre::Exception& e)
    {
        ErrorUtils::ShowError (
            _L("Startup error"), 
            fmt::format(_L("Could not load file '{}' - make sure the game is installed correctly.\n\nDetailed info: {}"), plugins_path, e.getDescription()));
        return false;
    }
 
    // Load renderer configuration
    bool autodetect_resolution = false;
    try
    {
        if (!m_ogre_root->restoreConfig())
        {
            autodetect_resolution = true;
            LOG(fmt::format("[RoR|Startup|Rendering] WARNING - invalid 'ogre.cfg', selecting render plugin manually..."));
 
            const auto render_systems = App::GetAppContext()->GetOgreRoot()->getAvailableRenderers();
            if (!render_systems.empty())
            {
                LOG(fmt::format("[RoR|Startup|Rendering] Auto-selected renderer plugin '{}'", render_systems.front()->getName()));
                    m_ogre_root->setRenderSystem(render_systems.front());
            }
            else
            {
                ErrorUtils::ShowError (_L("Startup error"), _L("No render system plugin available. Check your plugins.cfg"));
                return false;
            }
        }
    }
    catch (Ogre::Exception& e)
    {
        ErrorUtils::ShowError (_L("Error restoring settings from 'ogre.cfg'"), e.getDescription());
        return false;
    }
 
    const auto rs = m_ogre_root->getRenderSystemByName(App::app_rendersys_override->getStr());
    if (rs != nullptr && rs != m_ogre_root->getRenderSystem())
    {
        LOG(fmt::format("[RoR|Startup|Rendering] Setting renderer '{}' on behalf of 'app_rendersys_override' (user selection via Settings UI)", rs->getName()));
        // The user has selected a different render system during the previous session.
        m_ogre_root->setRenderSystem(rs);
        m_ogre_root->saveConfig();
    }
    App::app_rendersys_override->setStr("");
 
    // Start the renderer
    LOG(fmt::format("[RoR|Startup|Rendering] Starting renderer '{}' (without auto-creating render window)", m_ogre_root->getRenderSystem()->getName()));
    m_ogre_root->initialise(/*createWindow=*/false);
 
    // Review configuration options
    Ogre::ConfigOptionMap ropts = m_ogre_root->getRenderSystem()->getConfigOptions();
    std::stringstream ropts_log;
    for (auto& pair: ropts)
    {
        ropts_log << "  " << pair.first << " = " << pair.second.currentValue << " (";
        for (auto& val: pair.second.possibleValues)
        {
            ropts_log << val << ", ";
        }
        ropts_log << ")\n";
    }
    LOG(fmt::format("[RoR|Startup|Rendering] Renderer options as reported by OGRE:\n{}", ropts_log.str()));
 
    // Configure the render window
    Ogre::NameValuePairList miscParams;
    miscParams["FSAA"] = ropts["FSAA"].currentValue;
    miscParams["vsync"] = ropts["VSync"].currentValue;
    miscParams["gamma"] = ropts["sRGB Gamma Conversion"].currentValue;
    if (!App::diag_allow_window_resize->getBool())
    {
    miscParams["border"] = "fixed";
    }
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
    const auto rd = ropts["Rendering Device"];
    const auto it = std::find(rd.possibleValues.begin(), rd.possibleValues.end(), rd.currentValue);
    const int idx = std::distance(rd.possibleValues.begin(), it);
    miscParams["monitorIndex"] = Ogre::StringConverter::toString(idx);
    miscParams["windowProc"] = Ogre::StringConverter::toString((size_t)OgreBites::WindowEventUtilities::_WndProc);
#endif
 
    // Validate rendering resolution
    Ogre::uint32 width, height;
    std::istringstream mode (ropts["Video Mode"].currentValue);
    Ogre::String token;
    mode >> width;
    mode >> token; // 'x' as seperator between width and height
    mode >> height;
    
    if(width < 800) width = 800;
    if(height < 600) height = 600;
 
    if (autodetect_resolution)
    {
        for (auto& p_mode_str: ropts["Video Mode"].possibleValues)
        {
            Ogre::uint32 p_width, p_height;
            std::istringstream p_mode (p_mode_str);
            p_mode >> p_width;
            p_mode >> token; // 'x' as seperator between width and height
            p_mode >> p_height;
            if (p_width >= width && p_height >= height)
            {
                width = p_width;
                height = p_height;
                m_ogre_root->getRenderSystem()->setConfigOption("Video Mode", p_mode_str);
            }
        }
 
        LOG(fmt::format("[RoR|Startup|Rendering] WARNING - invalid 'ogre.cfg', auto-detected resolution {}x{}", width, height));
        m_ogre_root->saveConfig();
    }
 
    // Review render window settings
    std::stringstream miscParams_log;
    for (auto& pair: miscParams)
    {
        miscParams_log << "  " << pair.first << " = " << pair.second << "\n";
    }
    LOG(fmt::format("[RoR|Startup|Rendering] Creating render window with settings:\n{}", miscParams_log.str()));
 
    // Create render window
    m_render_window = Ogre::Root::getSingleton().createRenderWindow (
        "Rigs of Rods version " + Ogre::String (ROR_VERSION_STRING),
        width, height, ropts["Full Screen"].currentValue == "Yes", &miscParams);
    OgreBites::WindowEventUtilities::_addRenderWindow(m_render_window);
    OgreBites::WindowEventUtilities::addWindowEventListener(m_render_window, this);
 
    this->SetRenderWindowIcon(m_render_window);
    m_render_window->setActive(true);
 
    // Create viewport (without camera)
    m_viewport = m_render_window->addViewport(/*camera=*/nullptr);
    m_viewport->setBackgroundColour(Ogre::ColourValue::Black);
 
    return true;
}
 
Ogre::RenderWindow* AppContext::CreateCustomRenderWindow(std::string const& window_name, int width, int height)
{
    Ogre::NameValuePairList misc;
    Ogre::ConfigOptionMap ropts = m_ogre_root->getRenderSystem()->getConfigOptions();
    misc["FSAA"] = Ogre::StringConverter::parseInt(ropts["FSAA"].currentValue, 0);
 
    Ogre::RenderWindow* rw = Ogre::Root::getSingleton().createRenderWindow(window_name, width, height, false, &misc);
    return rw;
}
 
void AppContext::CaptureScreenshot()
{
    const std::time_t time = std::time(nullptr);
    const int index = (time == m_prev_screenshot_time) ? m_prev_screenshot_index+1 : 1;
 
    std::stringstream stamp;
    stamp << std::put_time(std::localtime(&time), "%Y-%m-%d_%H-%M-%S") << "_" << index
          << "." << App::app_screenshot_format->getStr();
    std::string path = PathCombine(App::sys_screenshot_dir->getStr(), "screenshot_") + stamp.str();
 
    if (App::app_screenshot_format->getStr() == "png")
    {
        AdvancedScreen png(m_render_window, path);
 
        png.addData("User_NickName", App::mp_player_name->getStr());
        png.addData("User_Language", App::app_language->getStr());
 
        if (App::app_state->getEnum<AppState>() == AppState::SIMULATION && 
            App::GetGameContext()->GetPlayerActor())
        {
            png.addData("Truck_file", App::GetGameContext()->GetPlayerActor()->ar_filename);
            png.addData("Truck_name", App::GetGameContext()->GetPlayerActor()->getTruckName());
        }
        if (App::GetGameContext()->GetTerrain())
        {
            png.addData("Terrn_file", App::sim_terrain_name->getStr());
            png.addData("Terrn_name", App::sim_terrain_gui_name->getStr());
        }
        if (App::mp_state->getEnum<MpState>() == MpState::CONNECTED)
        {
            png.addData("MP_ServerName", App::mp_server_host->getStr());
        }
 
        png.write();
    }
    else
    {
        m_render_window->writeContentsToFile(path);
    }
 
    App::GetConsole()->putMessage(Console::CONSOLE_MSGTYPE_INFO, Console::CONSOLE_SYSTEM_NOTICE,
                                  _L("Screenshot: ") + stamp.str());
 
    m_prev_screenshot_time = time;
    m_prev_screenshot_index = index;
}
 
void AppContext::ActivateFullscreen(bool val)
{
    if (!val && !m_windowed_fix)
    {
        // Workaround OGRE glitch - badly aligned viewport after first full->window switch
        // Observed on Win10/OpenGL (GeForce GTX 660)
        m_render_window->setFullscreen(false, m_render_window->getWidth()-1, m_render_window->getHeight()-1);    
        m_render_window->setFullscreen(false, m_render_window->getWidth()+1, m_render_window->getHeight()+1);    
    }
    else
    {
        m_render_window->setFullscreen(val, m_render_window->getWidth(), m_render_window->getHeight());
    }
}
 
// --------------------------
// Profiling
 
void AppContext::PrepareProfiler()
{
#if OGRE_PROFILING == 1 // Singleton is null otherwise
 
    // WORKAROUND for OGRE v14.5.2 bug - repeated `setEnabled()` true causes shutdown-reinit cycle.
    // See https://github.com/OGRECave/ogre/commit/05dd52dc7c9abfc3a15734dab59deede7288404a
    if (App::diag_profiler_enabled->getBool() != m_profiler_enabled)
    {
        m_profiler_enabled = App::diag_profiler_enabled->getBool();
        Ogre::Profiler::getSingleton().setEnabled(m_profiler_enabled);
    }
 
    if (App::diag_profiler_rate->getInt() < 1) // Check valid uint & Avoid division by zero in OGRE
    {
        App::GetConsole()->putMessage(Console::CONSOLE_MSGTYPE_INFO, Console::CONSOLE_SYSTEM_WARNING,
            fmt::format(_L("Invalid profiler update rate ({}), resetting to default"), App::diag_profiler_rate->getInt()));
        App::diag_profiler_rate->setVal(10); // Default in OGRE
    }
    Ogre::Profiler::getSingleton().setUpdateDisplayFrequency((Ogre::uint)App::diag_profiler_rate->getInt());
#endif
}
 
// --------------------------
// Program paths and logging
 
bool AppContext::SetUpProgramPaths()
{
    // Process directory
    std::string exe_path = RoR::GetExecutablePath();
    if (exe_path.empty())
    {
        ErrorUtils::ShowError(_L("Startup error"), _L("Error while retrieving program directory path"));
        return false;
    }
    App::sys_process_dir->setStr(RoR::GetParentDirectory(exe_path.c_str()).c_str());
 
    // RoR's home directory
    std::string local_userdir = PathCombine(App::sys_process_dir->getStr(), "config"); // TODO: Think of a better name, this is ambiguious with ~/.rigsofrods/config which stores configfiles! ~ only_a_ptr, 02/2018
    if (FolderExists(local_userdir))
    {
        // It's a portable installation
        App::sys_user_dir->setStr(local_userdir.c_str());
    }
    else
    {
        // Default location - user's home directory
        std::string user_home = RoR::GetUserHomeDirectory();
        if (user_home.empty())
        {
            ErrorUtils::ShowError(_L("Startup error"), _L("Error while retrieving user directory path"));
            return false;
        }
        RoR::Str<500> ror_homedir;
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
        ror_homedir << user_home << PATH_SLASH << "My Games";
        CreateFolder(ror_homedir.ToCStr());
        ror_homedir << PATH_SLASH << "Rigs of Rods";
#elif OGRE_PLATFORM == OGRE_PLATFORM_LINUX
        char* env_SNAP = getenv("SNAP_USER_COMMON");
        if(env_SNAP)
            ror_homedir = env_SNAP;
        else
            ror_homedir << user_home << PATH_SLASH << ".rigsofrods";
#elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE
        ror_homedir << user_home << PATH_SLASH << "RigsOfRods";
#endif
        CreateFolder(ror_homedir.ToCStr ());
        App::sys_user_dir->setStr(ror_homedir.ToCStr ());
    }
 
    return true;
}
 
void AppContext::SetUpLogging()
{
    std::string logs_dir = PathCombine(App::sys_user_dir->getStr(), "logs");
    CreateFolder(logs_dir);
    App::sys_logs_dir->setStr(logs_dir.c_str());
 
    auto ogre_log_manager = OGRE_NEW Ogre::LogManager();
    std::string rorlog_path = PathCombine(logs_dir, "RoR.log");
    Ogre::Log* rorlog = ogre_log_manager->createLog(rorlog_path, true, true);
    rorlog->stream() << "[RoR] Rigs of Rods (www.rigsofrods.org) version " << ROR_VERSION_STRING;
    std::time_t t = std::time(nullptr);
    rorlog->stream() << "[RoR] Current date: " << std::put_time(std::localtime(&t), "%Y-%m-%d");
 
    rorlog->addListener(App::GetConsole());  // Allow console to intercept log messages
}
 
bool AppContext::SetUpResourcesDir()
{
    std::string process_dir = PathCombine(App::sys_process_dir->getStr(), "resources");
#if OGRE_PLATFORM == OGRE_PLATFORM_LINUX
    if (!FolderExists(process_dir))
    {
        process_dir = "/usr/share/rigsofrods/resources/";
    }
#endif
    if (!FolderExists(process_dir))
    {
        ErrorUtils::ShowError(_L("Startup error"), _L("Resources folder not found. Check if correctly installed."));
        return false;
    }
    App::sys_resources_dir->setStr(process_dir);
    return true;
}
 
bool AppContext::SetUpConfigSkeleton()
{
    Ogre::String src_path = PathCombine(App::sys_resources_dir->getStr(), "skeleton.zip");
    Ogre::ResourceGroupManager::getSingleton().addResourceLocation(src_path, "Zip", "SrcRG");
    Ogre::FileInfoListPtr fl = Ogre::ResourceGroupManager::getSingleton().findResourceFileInfo("SrcRG", "*", true);
    if (fl->empty())
    {
        ErrorUtils::ShowError(_L("Startup error"), _L("Faulty resource folder. Check if correctly installed."));
        return false;
    }
    Ogre::String dst_path = PathCombine(App::sys_user_dir->getStr(), "");
    for (auto file : *fl)
    {
        CreateFolder(dst_path + file.basename);
    }
    fl = Ogre::ResourceGroupManager::getSingleton().findResourceFileInfo("SrcRG", "*");
    if (fl->empty())
    {
        ErrorUtils::ShowError(_L("Startup error"), _L("Faulty resource folder. Check if correctly installed."));
        return false;
    }
    Ogre::ResourceGroupManager::getSingleton().addResourceLocation(dst_path, "FileSystem", "DstRG", false, false);
    for (auto file : *fl)
    {
        if (file.uncompressedSize == 0)
            continue;
        Ogre::String path = file.path + file.basename;
        if (!Ogre::ResourceGroupManager::getSingleton().findResourceFileInfo("DstRG", path)->empty())
            continue;
        Ogre::DataStreamPtr src_ds = Ogre::ResourceGroupManager::getSingleton().openResource(path, "SrcRG");
        Ogre::DataStreamPtr dst_ds = Ogre::ResourceGroupManager::getSingleton().createResource(path, "DstRG");
        std::vector<char> buf(src_ds->size());
        size_t read = src_ds->read(buf.data(), src_ds->size());
        if (read > 0)
        {
            dst_ds->write(buf.data(), read);
        }
    }
    Ogre::ResourceGroupManager::getSingleton().destroyResourceGroup("SrcRG");
    Ogre::ResourceGroupManager::getSingleton().destroyResourceGroup("DstRG");
 
    return true;
}
 
void AppContext::SetUpObsoleteConfMarker()
{
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
    Ogre::String old_ror_homedir = Ogre::StringUtil::format("%s\\Rigs of Rods 0.4", RoR::GetUserHomeDirectory().c_str());
    if(FolderExists(old_ror_homedir))
    {
        if (!FileExists(Ogre::StringUtil::format("%s\\OBSOLETE_FOLDER.txt", old_ror_homedir.c_str())))
        {
            Ogre::String obsoleteMessage = Ogre::StringUtil::format("This folder is obsolete, please move your mods to  %s", App::sys_user_dir->getStr());
            try
            {
                Ogre::ResourceGroupManager::getSingleton().addResourceLocation(old_ror_homedir, "FileSystem", "homedir", false, false);
                Ogre::DataStreamPtr stream = Ogre::ResourceGroupManager::getSingleton().createResource("OBSOLETE_FOLDER.txt", "homedir");
                stream->write(obsoleteMessage.c_str(), obsoleteMessage.length());
                Ogre::ResourceGroupManager::getSingleton().destroyResourceGroup("homedir");
            }
            catch (std::exception & e)
            {
                RoR::LogFormat("Error writing to %s, message: '%s'", old_ror_homedir.c_str(), e.what());
            }
            Ogre::String message = Ogre::StringUtil::format(
                "Welcome to Rigs of Rods %s\nPlease note that the mods folder has moved to:\n\"%s\"\nPlease move your mods to the new folder to continue using them",
                ROR_VERSION_STRING_SHORT,
                App::sys_user_dir->getStr()
            );
 
            RoR::App::GetGuiManager()->ShowMessageBox("Obsolete folder detected", message.c_str());
        }
    }
#endif // OGRE_PLATFORM_WIN32
}
 
void AppContext::SetUpThreads()
{
    m_mainthread_id = std::this_thread::get_id();
 
    // This cannot be done earlier as it uses the above thread ID to assert() against invalid access.
    App::GetGameContext()->m_dummy_cache_selection = new CacheEntry();
}