irrlichtWrapper.cpp

#include "main.h"
#include "physxDebugHelper.h"
#include "irrlichtWrapper.h"
#include "physxWrapper.h"


// will result in fullscreen only if video card can handle. windowed else.
#define SCREEN_WIDTH    1024//1280
#define SCREEN_HEIGHT   SCREEN_WIDTH/16*9//768//960


// only visible within this file
static NxDebugRenderer* nxDebugRenderer = NULL;


// init irrlicht and setup global symbols from main.h
ERR_TYPE irrlichtInit()
{
        // try create DX9 graphics
        // DX9, windowSize, 32 bitPerPixel, fullscreen NO, stancilShadows YES
        device = createDevice( EDT_DIRECT3D9, dimension2d<s32>(SCREEN_WIDTH, SCREEN_HEIGHT), 32, false, true );
        if ( NULL == device )
        {
                // failed, try create openGL graphics
                device = createDevice( EDT_OPENGL, dimension2d<s32>(SCREEN_WIDTH, SCREEN_HEIGHT), 32, false, true );
                if ( NULL == device )
                {
                        // failed, try create Software graphics
                        device = createDevice( EDT_BURNINGSVIDEO, dimension2d<s32>(SCREEN_WIDTH, SCREEN_HEIGHT) );
                        if ( NULL == device )
                        {
                                return ERR_IRRLICHT_INIT_FAILED;
                        }
                }
        }

        driver = device->getVideoDriver();
        smgr = device->getSceneManager();
        guienv = device->getGUIEnvironment();
        logger = device->getLogger();
        timer = device->getTimer();

        // create our physics debug renderer
        nxDebugRenderer = new NxDebugRenderer();

        // fill window black and display text
        IGUIStaticText* text = guienv->addStaticText(   stringw("loading").c_str(),
                                                                                                        rect<s32>(      SCREEN_WIDTH/2-16, 
                                                                                                                                SCREEN_HEIGHT/2-6, 
                                                                                                                                SCREEN_WIDTH/2+17, 
                                                                                                                                SCREEN_HEIGHT/2+6),
                                                                                                        true, 
                                                                                                        true, 
                                                                                                        NULL, 
                                                                                                        -1, 
                                                                                                        true );
        driver->beginScene( true, true, SColor(0) );
        guienv->drawAll();
        driver->endScene();
        text->remove();

        // disable mip map creation, we want full resolution on any scale
        driver->setTextureCreationFlag( ETCF_CREATE_MIP_MAPS, false );
        // enable A8R8G8B8 color format by default
        driver->setTextureCreationFlag( ETCF_ALWAYS_32_BIT, true );

        return ERR_OK;
}


// to be called every frame
ERR_TYPE irrlichtUpdate()
{
        static s32 lastFPS = 0;
        static bool firstCall = true;

        if ( device->run() )
        {
                if ( 1 ) //device->isWindowActive() )
                {
                        // if this function is called the very first time, setup a "fade in" effect
                        if ( true == firstCall )
                        {
                                IGUIInOutFader* fader = device->getGUIEnvironment()->addInOutFader();
                                fader->setColor( SColor(0) );   // black
                                fader->fadeIn( 4000 );  // 4 seconds until finished
                                firstCall = false;
                        }

                        //driver->beginScene( true, true, SColor(240, 240, 240, 240) ); // background color bright grey
                        driver->beginScene( true, true, SColor(255, 100, 100, 100) );   // gray
                        //driver->beginScene( true, true, SColor(255, 0, 0, 0) );       // black
                        
                        smgr->drawAll();
                        guienv->drawAll();
                        
                        // draw frame around physx objects and those tricolor arrows
                        // can be disabled (slows down FPS alot on my machine)
                        if ( true == getPhysxDebugRenderingEnabled() )
                        {
                                nxDebugRenderer->update( 0 );
                        }

                        driver->endScene();

                        // get irrlicht FramesPerSecond
                        s32 fps = driver->getFPS();

                        if ( lastFPS != fps )
                        {
                                stringw str(L"");
                                str += fps;
                                str += " FPS";

                                device->setWindowCaption( str.c_str() );
                                lastFPS = fps;
                        }
                }
                return ERR_OK;
        }
        
        // someone quit irrlicht window somehow
        return ERR_IRRLICHT_UPDATE_FAILED;
}


// destroy irrlicht
ERR_TYPE irrlichtDeinit()
{
        if ( nxDebugRenderer )
        {
                delete nxDebugRenderer;
                nxDebugRenderer = NULL;
        }

        if ( device )
        {
                device->drop();
                device = NULL;
        }

        return ERR_OK;
}

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