hal.cpp

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/*
        Skyscraper 2.0 - Hardware Abstraction Layer
        Copyright (C)2004-2024 Ryan Thoryk
        https://www.skyscrapersim.net
        https://sourceforge.net/projects/skyscraper/
        Contact - ryan@skyscrapersim.net
 
        This program is free software; you can redistribute it and/or
        modify it under the terms of the GNU General Public License
        as published by the Free Software Foundation; either version 2
        of the License, or (at your option) any later version.
 
        This program 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 this program; if not, write to the Free Software
        Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
 
//OGRE interfaces
#include <OgreRoot.h>
#include <OgreRenderWindow.h>
#include <OgreConfigFile.h>
#include <OgreFontManager.h>
#include <OgreRectangle2D.h>
#include <OgreRTShaderSystem.h>
#include <OgreBitesConfigDialog.h>
#include <OgreSGTechniqueResolverListener.h>
#include <OgreOverlaySystem.h>
 
#ifndef DISABLE_SOUND
        //FMOD
        #include <fmod_errors.h>
#endif
 
//OpenXR interfaces
#if USING_OPENXR
#include "OgreOpenXRRenderWindow.h"
#endif
 
//Linux malloc support
#if OGRE_PLATFORM == OGRE_PLATFORM_LINUX
#include "malloc.h"
#endif
 
#include <iostream>
 
//simulator interfaces
#include "globals.h"
#include "sbs.h"
#include "vm.h"
#include "camera.h"
#include "scenenode.h"
#include "enginecontext.h"
#include "hal.h"
#include "gui.h"
#include "profiler.h"
 
using namespace SBS;
 
namespace Skyscraper {
 
//Hardware Abstraction Layer
 
HAL::HAL(VM *vm)
{
    this->vm = vm;
        mOverlaySystem = 0;
        mRoot = 0;
        mRenderWindow = 0;
        mSceneMgr = 0;
        sound = 0;
        channel = 0;
        soundsys = 0;
        RTSS = false;
        mTrayMgr = 0;
        show_stats = -1;
        logger = 0;
        log = 0;
        DisableSound = false;
        configfile = 0;
        keyconfigfile = 0;
        joyconfigfile = 0;
        DX11 = false;
        timer = new Ogre::Timer();
}
 
HAL::~HAL()
{
#ifndef DISABLE_SOUND
        if (soundsys)
                soundsys->release();
#endif
 
        delete mOverlaySystem;
 
        Ogre::ResourceGroupManager::getSingleton().shutdownAll();
 
        if (configfile)
                delete configfile;
        configfile = 0;
 
        if (keyconfigfile)
                delete keyconfigfile;
        keyconfigfile = 0;
 
        if (joyconfigfile)
                delete joyconfigfile;
        joyconfigfile = 0;
 
        log->removeListener(this);
 
        //shutdown Ogre
#if OGRE_PLATFORM != OGRE_PLATFORM_APPLE
        delete mRoot;
#endif
 
        delete logger;
}
 
void HAL::ClickedObject(bool left, bool shift, bool ctrl, bool alt, bool right, Real scale, bool center_only)
{
        //click on an object
 
        EngineContext *engine = vm->GetActiveEngine();
 
        if (!engine)
                return;
 
        //get SBS camera
        Camera *camera = engine->GetSystem()->camera;
 
        if (!camera)
                return;
 
        if (left == true)
                camera->MouseLeftDown = true;
        else
                camera->MouseRightDown = true;
 
        Real result = -1;
        Real nearest = 1000;
        Camera *nearest_cam = 0;
 
        for (int i = 0; i < vm->GetEngineCount(); i++)
        {
                //go through each engine and try a mouse click, find which hit is nearest
                EngineContext *engine = vm->GetEngine(i);
                if (engine)
                {
                        Camera *camera2 = engine->GetSystem()->camera;
                        if (camera2)
                                result = camera2->ClickedObject(camera, shift, ctrl, alt, right, scale, center_only, true);
 
                        if (result < nearest && result >= 0)
                        {
                                nearest = result;
                                nearest_cam = camera2;
                        }
                }
        }
 
        //perform a mouseclick on the nearest result
        if (nearest_cam)
                nearest_cam->ClickedObject(camera, shift, ctrl, alt, right, scale, center_only);
}
 
void HAL::UnclickedObject()
{
        //unclick the clicked object
 
        EngineContext *engine = vm->GetActiveEngine();
 
        if (!engine)
                return;
 
        //get SBS camera
        Camera *camera = engine->GetSystem()->camera;
 
        if (!camera)
                return;
 
        camera->UnclickedObject();
        camera->MouseLeftDown = false;
        camera->MouseRightDown = false;
}
 
void HAL::UpdateOpenXR()
{
#if USING_OPENXR
        SBS_PROFILE_MAIN("UpdateOpenXR");
 
        //update OpenXR camera transformations
        if (GetConfigBool(configfile, "Skyscraper.Frontend.VR", false) == true)
        {
                EngineContext* engine = vm->GetActiveEngine();
 
                if (engine)
                {
                        ::SBS::SBS* Simcore = engine->GetSystem();
 
                        if (Simcore->camera)
                        {
                                for (int i = 0; i < 2; i++)
                                {
                                        Ogre::Camera* camera = Simcore->camera->GetOgreCamera(i);
                                        Vector3 cameranode_pos = Simcore->camera->GetSceneNode()->GetPosition() - Simcore->camera->GetPosition();
                                        SetOpenXRParameters(i, Simcore->ToRemote(cameranode_pos), camera->getDerivedOrientation());
                                }
                        }
                }
        }
#endif
}
 
void HAL::Report(const std::string &message, const std::string &prompt)
{
        std::string delim = "";
        if (prompt.size() > 0)
                delim = " ";
        try
        {
                if (Ogre::LogManager::getSingletonPtr())
                        Ogre::LogManager::getSingleton().logMessage(prompt + delim + message);
        }
        catch (Ogre::Exception &e)
        {
#ifdef USING_WX
                vm->GetGUI()->ShowError("VM: Error writing message to log\n" + e.getDescription());
#endif
        }
}
 
bool HAL::ReportError(const std::string &message, const std::string &prompt)
{
        std::string delim = "";
        if (prompt.size() > 0)
                delim = " ";
        try
        {
                if (Ogre::LogManager::getSingletonPtr())
                        Ogre::LogManager::getSingleton().logMessage(prompt + delim + message, Ogre::LML_CRITICAL);
        }
        catch (Ogre::Exception &e)
        {
#ifdef USING_WX
                vm->GetGUI()->ShowError("VM: Error writing message to log\n" + e.getDescription());
#endif
        }
        return false;
}
 
bool HAL::ReportFatalError(const std::string &message, const std::string &prompt)
{
        ReportError(message, prompt);
#ifdef USING_WX
        vm->GetGUI()->ShowError(message);
#endif
        return false;
}
 
Ogre::ConfigFile* HAL::ConfigLoad(const std::string &filename, bool delete_after_use)
{
        //load a config file
        try
        {
                Ogre::ConfigFile* file = new Ogre::ConfigFile();
                file->load(filename);
                if (delete_after_use == true)
                {
                        delete file;
                        file = 0;
                }
                return file;
        }
        catch (Ogre::Exception &e)
        {
                ReportFatalError("Error loading configuration files\nDetails: " + e.getDescription());
                return 0;
        }
}
 
int HAL::GetConfigInt(Ogre::ConfigFile *file, const std::string &key, int default_value)
{
        std::string result = file->getSetting(key, "", ToString(default_value));
        return ToInt(result);
}
 
std::string HAL::GetConfigString(Ogre::ConfigFile *file, const std::string &key, const std::string &default_value)
{
        if (!file)
                return "";
        return file->getSetting(key, "", default_value);
}
 
bool HAL::GetConfigBool(Ogre::ConfigFile *file, const std::string &key, bool default_value)
{
        if (!file)
                return false;
        std::string result = file->getSetting(key, "", BoolToString(default_value));
        return ToBool(result);
}
 
Real HAL::GetConfigFloat(Ogre::ConfigFile *file, const std::string &key, Real default_value)
{
        if (!file)
                return 0.0;
        std::string result = file->getSetting(key, "", ToString(default_value));
        return ToFloat(result);
}
 
bool HAL::Initialize(const std::string &data_path, Ogre::Root *root, Ogre::OverlaySystem *overlay)
{
        //initialize HAL system
 
        mRoot = root;
 
        //initialize OGRE
        try
        {
                if (!mRoot)
                        mRoot = Ogre::Root::getSingletonPtr();
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error during initial OGRE check\nDetails: " + e.getDescription());
        }
 
        if(!mRoot)
        {
                try
                {
                        //set up custom logger
                        if (!logger)
                        {
                                logger = new Ogre::LogManager();
                                log = logger->createLog(data_path + "skyscraper.log", true, !vm->showconsole, false);
                                log->addListener(this);
                        }
 
                        //report on system startup
                        Report("Skyscraper version " + vm->version_frontend + " starting...\n", "");
 
                        //load OGRE
                        Report("Loading OGRE...");
                        mRoot = new Ogre::Root();
                }
                catch (Ogre::Exception &e)
                {
                        return ReportFatalError("Error initializing OGRE\nDetails: " + e.getDescription());
                }
                catch (...)
                {
                        return ReportFatalError("Error initializing OGRE");
                }
        }
 
        //set up overlay system
        try
        {
                Report("");
                Report("Loading Overlay System...");
                mOverlaySystem = overlay;
                if (!mOverlaySystem)
                        mOverlaySystem = new Ogre::OverlaySystem();
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error creating overlay system\nDetails: " + e.getDescription());
        }
 
        //configure render system
        try
        {
                if(!mRoot->getRenderSystem())
                {
                        //if no render systems are loaded, try to load previous config
                        if(!mRoot->restoreConfig())
                        {
                                //show dialog if load failed
                                mRoot->showConfigDialog(OgreBites::getNativeConfigDialog());
                        }
                }
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error configuring render system\nDetails: " + e.getDescription());
        }
 
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
        //set rendersystem options
        Ogre::RenderSystem *rendersystem = mRoot->getRenderSystem();
        if (rendersystem)
        {
                Ogre::ConfigOptionMap CurrentRendererOptions = mRoot->getRenderSystem()->getConfigOptions();
                Ogre::ConfigOptionMap::iterator configItr = CurrentRendererOptions.begin();
 
                for (; configItr != CurrentRendererOptions.end(); configItr++)
                {
                        if ((configItr)->first == "Floating-point mode")
                        {
                                //if using DirectX, prevent it from switching into single-point floating point mode
                                rendersystem->setConfigOption("Floating-point mode", "Consistent");
                                break;
                        }
 
                        if ((configItr)->first == "Auto hardware buffer management")
                        {
                                //fix black screen when resizing window using DirectX on Windows
                                rendersystem->setConfigOption("Auto hardware buffer management", "Yes");
                        }
                }
        }
#endif
 
        //initialize render window
        try
        {
                Report("");
                Report("Initializing OGRE...");
                mRoot->initialise(false);
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error initializing render window\nDetails: " + e.getDescription());
        }
        catch (...)
        {
                return ReportFatalError("Error initializing render window");
        }
 
        return true;
}
 
bool HAL::LoadSystem(const std::string &data_path, Ogre::RenderWindow *renderwindow)
{
        //load HAL system resources
 
        mRenderWindow = renderwindow;
 
        //get renderer info
        Renderer = mRoot->getRenderSystem()->getCapabilities()->getRenderSystemName();
 
        //shorten name
        int loc = Renderer.find("Rendering Subsystem");
        Renderer = Renderer.substr(0, loc - 1);
 
        //load resource configuration
        Ogre::ConfigFile cf;
        try
        {
                Report("");
                Report("Loading resources...");
                cf.load("resources.cfg");
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error loading resources.cfg\nDetails: " + e.getDescription());
        }
 
        //add resource locations
        try
        {
                std::string name, locationType;
                Ogre::ConfigFile::SettingsBySection_ settingsBySection = cf.getSettingsBySection();
                for (const auto& p : settingsBySection) {
                        for (const auto& r : p.second) {
                                locationType = r.first;
                                name = r.second;
                                Ogre::ResourceGroupManager::getSingleton().addResourceLocation(name, locationType);
                        }
                }
 
                //add app's directory to resource manager
                Ogre::ResourceGroupManager::getSingleton().initialiseResourceGroup("General");
                Ogre::ResourceGroupManager::getSingleton().addResourceLocation(".", "FileSystem", "General", true);
                if (data_path != "")
                        Ogre::ResourceGroupManager::getSingleton().addResourceLocation(data_path, "FileSystem", "General", true);
 
                //add materials group, and autoload
#ifdef USING_WX
                Ogre::ResourceGroupManager::getSingleton().addResourceLocation("data/materials", "FileSystem", "Materials", true);
                Ogre::ResourceGroupManager::getSingleton().initialiseResourceGroup("Materials");
 
                Ogre::ResourceGroupManager::getSingleton().addResourceLocation("media/packs/SdkTrays.zip", "Zip", "Trays", true);
                Ogre::ResourceGroupManager::getSingleton().initialiseResourceGroup("Trays");
#endif
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error initializing resources\nDetails: " + e.getDescription());
        }
 
        //create scene manager
        try
        {
                mSceneMgr = mRoot->createSceneManager();
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error creating scene manager\nDetails: " + e.getDescription());
        }
 
        mSceneMgr->addRenderQueueListener(mOverlaySystem);
 
        //enable shadows
        if (GetConfigBool(configfile, "Skyscraper.Frontend.Shadows", false) == true)
        {
                try
                {
                        Report("Enabling shadows");
                        mSceneMgr->setShadowTechnique(Ogre::SHADOWTYPE_STENCIL_ADDITIVE);
                }
                catch (Ogre::Exception &e)
                {
                        ReportFatalError("Error setting shadow technique\nDetails: " + e.getDescription());
                }
        }
 
        std::string renderer = mRoot->getRenderSystem()->getName();
 
        if (renderer != "Direct3D9 Rendering Subsystem" && renderer != "OpenGL Rendering Subsystem" && renderer != "Metal Rendering Subsystem")
                RTSS = true;
 
        if (RTSS == true)
        {
                //Enable the RT Shader System
                if (Ogre::RTShader::ShaderGenerator::initialize())
                {
                        Ogre::RTShader::ShaderGenerator* shaderGenerator = Ogre::RTShader::ShaderGenerator::getSingletonPtr();
                        shaderGenerator->addSceneManager(mSceneMgr);
 
                        // forward scheme not found events to the RTSS
                        OgreBites::SGTechniqueResolverListener* schemeNotFoundHandler = new OgreBites::SGTechniqueResolverListener(shaderGenerator);
                        Ogre::MaterialManager::getSingleton().addListener(schemeNotFoundHandler);
 
                        //uncomment this to dump RTSS shaders
                        //shaderGenerator->setShaderCachePath("shaders/");
                }
        }
 
        if (renderer == "Direct3D11 Rendering Subsystem")
                DX11 = true;
 
        try
        {
                //define camera configuration
                int cameras = 1; //use one camera for standard mode
                if (GetConfigBool(configfile, "Skyscraper.Frontend.VR", false) == true)
                        cameras = 2; //use two cameras for VR mode
 
                for (int i = 0; i < cameras; i++)
                {
                        mCameras.emplace_back(mSceneMgr->createCamera("Camera " + ToString(i + 1)));
                        if (mRenderWindow)
                        {
                                mViewports.emplace_back(mRenderWindow->addViewport(mCameras[i], (cameras - 1) - i, 0, 0, 1, 1));
                                mCameras[i]->setAspectRatio(Real(mViewports[i]->getActualWidth()) / Real(mViewports[i]->getActualHeight()));
                        }
                }
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error creating camera and viewport\nDetails: " + e.getDescription());
        }
 
        //set up default material shader scheme
        if (RTSS == true)
        {
                for (size_t i = 0; i < mViewports.size(); i++)
                {
                        mViewports[i]->setMaterialScheme(Ogre::RTShader::ShaderGenerator::DEFAULT_SCHEME_NAME);
                }
        }
 
        //setup texture filtering
        int filtermode = GetConfigInt(configfile, "Skyscraper.Frontend.TextureFilter", 3);
        int maxanisotropy = GetConfigInt(configfile, "Skyscraper.Frontend.MaxAnisotropy", 8);
 
        if (filtermode < 0 || filtermode > 3)
                filtermode = 3;
 
        if (filtermode < 3)
                maxanisotropy = 1;
 
        Ogre::TextureFilterOptions filter;
        if (filtermode == 0)
                filter = Ogre::TFO_NONE;
        else if (filtermode == 1)
                filter = Ogre::TFO_BILINEAR;
        else if (filtermode == 2)
                filter = Ogre::TFO_TRILINEAR;
        else if (filtermode == 3)
                filter = Ogre::TFO_ANISOTROPIC;
 
        Ogre::MaterialManager::getSingleton().setDefaultTextureFiltering(filter);
        Ogre::MaterialManager::getSingleton().setDefaultAnisotropy(maxanisotropy);
 
#ifndef DISABLE_SOUND
        //initialize FMOD (sound)
        DisableSound = GetConfigBool(configfile, "Skyscraper.Frontend.DisableSound", false);
        if (DisableSound == false)
        {
                Report("");
                Report("FMOD Sound System, copyright (C) Firelight Technologies Pty, Ltd., 1994-2024\n");
 
                FMOD_RESULT result = FMOD::System_Create(&soundsys);
                if (result != FMOD_OK)
                {
                        std::string fmod_result = FMOD_ErrorString(result);
                        ReportFatalError("Error initializing sound:\n" + fmod_result);
                        DisableSound = true;
                }
                else
                {
                        char name [] = "Skyscraper"; //set name for PulseAudio on Linux
                        result = soundsys->init(100, FMOD_INIT_NORMAL, &name);
                        if (result != FMOD_OK)
                        {
                                std::string fmod_result = FMOD_ErrorString(result);
                                ReportFatalError("Error initializing sound:\n" + fmod_result);
                                DisableSound = true;
                        }
                        else
                        {
                                //get FMOD version information
                                unsigned int version;
                                soundsys->getVersion(&version);
                                int major = version >> 16;
                                int minor = (version >> 8) & 255;
                                int rev = version & 255;
 
                                std::string s_version;
                                char hexString[25];
 
                                snprintf(hexString, 25, "%x.%x.%x", major, minor, rev);
                                s_version = std::string(hexString);
 
                                Report("Sound initialized: FMOD Engine version " + s_version);
                        }
                }
        }
        else
#endif
                Report("Sound Disabled");
 
        try
        {
                mTrayMgr = new OgreBites::TrayManager("InterfaceName", mRenderWindow);
        }
        catch (Ogre::Exception &e)
        {
                ReportFatalError("Error starting tray manager:\nDetails: " + e.getDescription());
        }
 
        if (mTrayMgr)
        {
                mTrayMgr->hideCursor();
        }
 
        //report hardware concurrency
        int c = std::thread::hardware_concurrency();
        Report("Reported hardware concurrency: " + ToString(c) + "\n");
 
        Report("Initialization complete");
        Report("");
 
        return true;
}
 
bool HAL::Render()
{
        SBS_PROFILE_MAIN("Render");
 
        //render to the frame buffer
        try
        {
                mRoot->renderOneFrame();
        }
        catch (Ogre::Exception &e)
        {
                return ReportFatalError("Error in render operation\nDetails: " + e.getDescription());
        }
 
        //update frame statistics
        Ogre::FrameEvent a;
        if (mTrayMgr)
                mTrayMgr->frameRendered(a);
 
        return true;
}
 
bool HAL::PlaySound(const std::string &filename, Real volume)
{
        //play a sound
#ifndef DISABLE_SOUND
 
        //load new sound
#if (FMOD_VERSION >> 16 == 4)
                FMOD_RESULT result = soundsys->createSound(filename.c_str(), (FMOD_MODE)(FMOD_2D | FMOD_ACCURATETIME | FMOD_SOFTWARE | FMOD_LOOP_NORMAL), 0, &sound);
#else
                FMOD_RESULT result = soundsys->createSound(filename.c_str(), (FMOD_MODE)(FMOD_2D | FMOD_ACCURATETIME | FMOD_LOOP_NORMAL), 0, &sound);
#endif
        if (result != FMOD_OK)
        {
                return ReportError("Can't load file '" + filename + "':\n" + FMOD_ErrorString(result));
        }
 
#if (FMOD_VERSION >> 16 == 4)
        result = soundsys->playSound(FMOD_CHANNEL_FREE, sound, true, &channel);
#else
        result = soundsys->playSound(sound, 0, true, &channel);
#endif
 
        if (result != FMOD_OK)
        {
                return ReportError("Error playing " + filename);
        }
 
        channel->setLoopCount(-1);
        channel->setVolume(volume);
        channel->setPaused(false);
 
#endif
        return true;
}
 
void HAL::StopSound()
{
        //stop and unload sound
#ifndef DISABLE_SOUND
        if (channel)
                channel->stop();
        if (sound)
                sound->release();
        sound = 0;
#endif
}
 
void HAL::ClearScene()
{
        //clear scene
        if (mSceneMgr)
                mSceneMgr->clearScene();
}
 
void HAL::ToggleStats()
{
        //toggle frame statistics
 
        show_stats++;
 
        if (!mTrayMgr)
                return;
 
        if (show_stats == 0)
        {
                mTrayMgr->showFrameStats(OgreBites::TrayLocation::TL_TOPRIGHT);
                mTrayMgr->toggleAdvancedFrameStats();
        }
        else if (show_stats == 1)
                mTrayMgr->toggleAdvancedFrameStats();
        else if (show_stats == 2)
        {
                mTrayMgr->hideFrameStats();
                show_stats = -1;
        }
}
 
void HAL::EnableStats(bool value)
{
        //turn on or off frame statistics
 
        if (value == true)
        {
                show_stats = -1;
                ToggleStats();
        }
        else
        {
                show_stats = 1;
                ToggleStats();
        }
}
 
void HAL::ReInit()
{
        //reinitialize HAL system
 
        EnableStats(false);
 
        delete mTrayMgr;
        mTrayMgr = 0;
 
        //reinit overlay system
        try
        {
                mSceneMgr->removeRenderQueueListener(mOverlaySystem);
                delete mOverlaySystem;
                mOverlaySystem = new Ogre::OverlaySystem();
                mSceneMgr->addRenderQueueListener(mOverlaySystem);
        }
        catch (Ogre::Exception &e)
        {
                ReportFatalError("Error creating overlay system\nDetails: " + e.getDescription());
        }
 
        //initialize system resources
        try
        {
                Ogre::ResourceGroupManager::getSingleton().clearResourceGroup("Materials");
                Ogre::ResourceGroupManager::getSingleton().initialiseResourceGroup("Materials");
                Ogre::ResourceGroupManager::getSingleton().clearResourceGroup("Trays");
                Ogre::ResourceGroupManager::getSingleton().initialiseResourceGroup("Trays");
        }
        catch (Ogre::Exception &e)
        {
                ReportFatalError("Error initializing resources\nDetails:" + e.getDescription());
        }
 
        //reinit tray manager
        try
        {
                mTrayMgr = new OgreBites::TrayManager("Tray", mRenderWindow);
        }
        catch (Ogre::Exception &e)
        {
                ReportFatalError("Error starting tray manager:\n" + e.getDescription());
        }
 
        if (mTrayMgr)
        {
                mTrayMgr->hideCursor();
        }
 
        show_stats = -1;
}
 
FMOD::System* HAL::GetSoundSystem()
{
        return soundsys;
}
 
Ogre::RenderWindow* HAL::GetRenderWindow()
{
        return mRenderWindow;
}
 
void HAL::Clear()
{
        //do a full clear of Ogre objects
 
        //remove all meshes
        Ogre::MeshManager::getSingleton().removeAll();
 
        //remove all materials
        if (RTSS)
                Ogre::RTShader::ShaderGenerator::getSingleton().removeAllShaderBasedTechniques();
        Ogre::MaterialManager::getSingleton().removeAll();
        Ogre::MaterialManager::getSingleton().initialise();  //restore default materials
 
        //remove all fonts
        Ogre::FontManager::getSingleton().removeAll();
 
        //remove all textures
        Ogre::TextureManager::getSingleton().removeAll();
 
        //clear scene manager
        if (mSceneMgr)
                mSceneMgr->clearScene();
 
        //free unused hardware buffers
        Ogre::HardwareBufferManager::getSingleton()._freeUnusedBufferCopies();
 
#ifndef DISABLE_SOUND
        //reset FMOD reverb
        soundsys->setReverbProperties(0, 0);
#endif
 
        ReInit();
 
#if OGRE_PLATFORM == OGRE_PLATFORM_LINUX
#ifdef __linux__
        //release free memory to OS on Linux
        malloc_trim(0);
#else
        //freebsd
#endif
#endif
}
 
Ogre::SceneManager* HAL::GetSceneManager()
{
        return mSceneMgr;
}
 
Ogre::RenderWindow* HAL::CreateRenderWindow(const std::string &name, int width, int height, const Ogre::NameValuePairList &params)
{
        //create the render window
#if USING_OPENXR
        if (GetConfigBool(configfile, "Skyscraper.Frontend.VR", false) == true)
        {
                Ogre::RenderWindow* win2 = Ogre::Root::getSingleton().createRenderWindow(name, width, height, false, &params);
                mRenderWindow = CreateOpenXRRenderWindow(mRoot->getRenderSystem());
                mRenderWindow->create(name, width, height, false, &params);
        }
        else
#endif
                mRenderWindow = Ogre::Root::getSingleton().createRenderWindow(name, width, height, false, &params);
 
        mRenderWindow->setActive(true);
        mRenderWindow->windowMovedOrResized();
 
        return mRenderWindow;
}
 
void HAL::DestroyRenderWindow()
{
        if (mRenderWindow)
           Ogre::Root::getSingleton().detachRenderTarget(mRenderWindow);
 
        mRenderWindow->destroy();
        mRenderWindow = 0;
}
 
void HAL::RefreshViewport()
{
        //refresh viewport to prevent rendering issues
 
        for (size_t i = 0; i < mViewports.size(); i++)
        {
                mViewports[i]->_updateDimensions();
        }
}
 
void HAL::Report(const std::string &message)
{
        Report(message, "hal:");
}
 
bool HAL::ReportError(const std::string &message)
{
        return ReportError(message, "hal:");
}
 
bool HAL::ReportFatalError(const std::string &message)
{
        return ReportFatalError(message, "hal:");
}
 
void HAL::LoadConfiguration(const std::string data_path, bool show_console)
{
        //load configuration files
 
        configfile = ConfigLoad(data_path + "skyscraper.ini");
        keyconfigfile = ConfigLoad(data_path + "keyboard.ini");
        joyconfigfile = ConfigLoad(data_path + "joystick.ini");
        ConfigLoad("plugins.cfg", true);
        ConfigLoad("resources.cfg", true);
 
        if (show_console == false)
                return;
 
        vm->showconsole = GetConfigBool(configfile, "Skyscraper.Frontend.ShowConsole", true);
 
        //create console window
#ifdef USING_WX
        if (vm->showconsole == true)
                vm->GetGUI()->ShowConsole(false);
#endif
}
 
void HAL::messageLogged(const std::string &message, Ogre::LogMessageLevel lml, bool maskDebug, const std::string &logName, bool &skipThisMessage)
{
        //callback function that receives OGRE log messages
 
#ifdef USING_WX
        vm->GetGUI()->WriteToConsole(message);
#endif
}
 
void HAL::ConsoleOut(const std::string &message, const std::string &color)
{
        //console output
        std::string mod = GetColors(color);
        std::string reset = GetColors("reset");
        std::cout << mod << message << reset;
}
 
std::string HAL::GetColors(const std::string &color)
{
        //get colors
        std::string mod;
        if (color == "blue")
                mod = "\033[1;34m";
        else if (color == "green")
                mod = "\033[1;32m";
        else if (color == "yellow")
                mod = "\033[1;33m";
        else if (color == "red")
                mod = "\033[1;31m";
        else if (color == "magenta")
                mod = "\033[1;35m";
        else if (color == "cyan")
                mod = "\033[1;36m";
        else if (color == "white")
                mod = "\033[1;37m";
        else if (color == "black")
                mod = "\033[1;30m";
        else if (color == "reset")
                mod = "\033[0m";
 
        return mod;
}
 
unsigned long HAL::GetCurrentTime()
{
        //get current time
        return timer->getMilliseconds();
}
 
}