Ogre 2011-12-06

用自己的main loop替代系统的main loop

#include "ogre/Ogre.h"
#include "ois/OIS.h"

class MyFrameListener : public Ogre::FrameListener
{
public:
    MyFrameListener(Ogre::RenderWindow* win)
    {
        size_t winHandle = 0;
        std::ostringstream winHandleStr;
        OIS::ParamList pl;
        win->getCustomAttribute("WINDOW", &winHandle);
        winHandleStr << winHandle;
        pl.insert(make_pair("WINDOW", winHandleStr.str()));
        inputMgr_ = OIS::InputManager::createInputSystem(pl);
        keyBoard_ = static_cast<OIS::Keyboard*>(inputMgr_->createInputObject(OIS::OISKeyboard, false));
    }

    ~MyFrameListener()
    {
        inputMgr_->destroyInputObject(keyBoard_);
        OIS::InputManager::destroyInputSystem(inputMgr_);
    }

    // 返回false则渲染结束
    bool frameStarted(const Ogre::FrameEvent& evt)
    {
        keyBoard_->capture();
        if (keyBoard_->isKeyDown(OIS::KC_ESCAPE))
        {
            return false;
        }

        return true;
    }

    // 返回false则渲染结束
    bool frameRenderingQueued(const Ogre::FrameEvent& evt)
    {
        return true;
    }

    // 返回false则渲染结束
    bool frameEnded(const Ogre::FrameEvent& evt)
    {
        return true;
    }

private:
    OIS::InputManager* inputMgr_;
    OIS::Keyboard*     keyBoard_;
};

class MyAppliaction
{
public:
    MyAppliaction()
    {
        root_ = 0;
        sceneMgr_ = 0;
        frameListener_ = 0;
        keepRunning_ = true;
    }

    ~MyAppliaction()
    {
        delete root_;
        delete frameListener_;
    }

    void LoadResources()
    {
        Ogre::ConfigFile cf;
        cf.load("resources_d.cfg");
        Ogre::ConfigFile::SectionIterator ite = cf.getSectionIterator();
        Ogre::String sectionName, typeName, dataName;
        while (ite.hasMoreElements())
        {
            sectionName = ite.peekNextKey();
            Ogre::ConfigFile::SettingsMultiMap* setting = ite.getNext();
            Ogre::ConfigFile::SettingsMultiMap::iterator i;
            for (i = setting->begin(); i != setting->end(); ++i)
            {
                typeName = i->first;
                dataName = i->second;
                Ogre::ResourceGroupManager::getSingleton().addResourceLocation(dataName, typeName, sectionName);
            }
        }
        Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
    }

    void CreateScene()
    {
        Ogre::Entity* ent = sceneMgr_->createEntity("Sinbad.mesh");
        sceneMgr_->getRootSceneNode()->createChildSceneNode()->attachObject(ent);
    }

    bool KeepRunning() const
    {
        return keepRunning_;
    }

    void RenderOneFrame()
    {
        // 处理消息
        Ogre::WindowEventUtilities::messagePump();
        keepRunning_ = root_->renderOneFrame();
    }

    int StartUp()
    {
        root_ = new Ogre::Root("plugins_d.cfg");
        if (!root_->showConfigDialog())
            return -1;

        Ogre::RenderWindow* window = root_->initialise(true, "HKX");
        sceneMgr_ = root_->createSceneManager(Ogre::ST_GENERIC);

        Ogre::Camera* camera = sceneMgr_->createCamera("camera");
        camera->setPosition(Ogre::Vector3(0, 0, 50));
        camera->lookAt(0, 0, 0);
        camera->setNearClipDistance(5);

        Ogre::Viewport* vp = window->addViewport(camera, 0, 0, 0, 1.0, 1.0);
        vp->setBackgroundColour(Ogre::ColourValue(0.0, 0.0, 0.0, 0.0));
        camera->setAspectRatio(Ogre::Real(vp->getActualWidth()) / Ogre::Real(vp->getActualHeight()));

        frameListener_ = new MyFrameListener(window);
        root_->addFrameListener(frameListener_);

        LoadResources();
        CreateScene();
//        root_->startRendering();

        return 0;
    }

private:
    Ogre::Root* root_;
    Ogre::SceneManager* sceneMgr_;
    MyFrameListener*    frameListener_;

    bool                keepRunning_;
};


int main()
{
    MyAppliaction app;
    app.StartUp();

    while(app.KeepRunning())
    {
        app.RenderOneFrame();
    }

    return 0;
}

 

添加鼠标和键盘WASD控制：

#include "ogre/Ogre.h"
#include "ois/OIS.h"

class MyFrameListener : public Ogre::FrameListener
{
public:
    MyFrameListener(Ogre::RenderWindow* win, Ogre::Camera* cam)
    {
        camera_ = cam;
        movementSpeed_ = 50.0f;

        size_t winHandle = 0;
        std::ostringstream winHandleStr;
        OIS::ParamList pl;
        win->getCustomAttribute("WINDOW", &winHandle);
        winHandleStr << winHandle;
        pl.insert(make_pair("WINDOW", winHandleStr.str()));
        inputMgr_ = OIS::InputManager::createInputSystem(pl);
        keyBoard_ = static_cast<OIS::Keyboard*>(inputMgr_->createInputObject(OIS::OISKeyboard, false));

        mouse_ = static_cast<OIS::Mouse*>(inputMgr_->createInputObject(OIS::OISMouse, false));
    }

    ~MyFrameListener()
    {
        inputMgr_->destroyInputObject(keyBoard_);
        inputMgr_->destroyInputObject(mouse_);
        OIS::InputManager::destroyInputSystem(inputMgr_);
    }

    // 返回false则渲染结束
    bool frameStarted(const Ogre::FrameEvent& evt)
    {
        keyBoard_->capture();
        if (keyBoard_->isKeyDown(OIS::KC_ESCAPE))
            return false;

        Ogre::Vector3 translate(0, 0, 0);
        if (keyBoard_->isKeyDown(OIS::KC_W))
            translate += Ogre::Vector3(0, 0, -1);
        if (keyBoard_->isKeyDown(OIS::KC_S))
            translate += Ogre::Vector3(0, 0, 1);
        if (keyBoard_->isKeyDown(OIS::KC_A))
            translate += Ogre::Vector3(-1, 0, 0);
        if (keyBoard_->isKeyDown(OIS::KC_D))
            translate += Ogre::Vector3(1, 0, 0);
        camera_->moveRelative(translate * evt.timeSinceLastFrame * movementSpeed_);

        mouse_->capture();
        float rotX = mouse_->getMouseState().X.rel * evt.timeSinceLastFrame * -1;
        float rotY = mouse_->getMouseState().Y.rel * evt.timeSinceLastFrame * -1;
        camera_->yaw(Ogre::Radian(rotX));
        camera_->pitch(Ogre::Radian(rotY));

        return true;
    }

    // 返回false则渲染结束
    bool frameRenderingQueued(const Ogre::FrameEvent& evt)
    {
        return true;
    }

    // 返回false则渲染结束
    bool frameEnded(const Ogre::FrameEvent& evt)
    {
        return true;
    }

private:
    OIS::InputManager* inputMgr_;
    OIS::Keyboard*     keyBoard_;
    OIS::Mouse*        mouse_;
    Ogre::Camera*      camera_;
    float              movementSpeed_;
};

class MyAppliaction
{
public:
    MyAppliaction()
    {
        root_ = 0;
        sceneMgr_ = 0;
        frameListener_ = 0;
        keepRunning_ = true;
    }

    ~MyAppliaction()
    {
        delete root_;
        delete frameListener_;
    }

    void LoadResources()
    {
        Ogre::ConfigFile cf;
        cf.load("resources_d.cfg");
        Ogre::ConfigFile::SectionIterator ite = cf.getSectionIterator();
        Ogre::String sectionName, typeName, dataName;
        while (ite.hasMoreElements())
        {
            sectionName = ite.peekNextKey();
            Ogre::ConfigFile::SettingsMultiMap* setting = ite.getNext();
            Ogre::ConfigFile::SettingsMultiMap::iterator i;
            for (i = setting->begin(); i != setting->end(); ++i)
            {
                typeName = i->first;
                dataName = i->second;
                Ogre::ResourceGroupManager::getSingleton().addResourceLocation(dataName, typeName, sectionName);
            }
        }
        Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
    }

    void CreateScene()
    {
        Ogre::Entity* ent = sceneMgr_->createEntity("Sinbad.mesh");
        sceneMgr_->getRootSceneNode()->createChildSceneNode()->attachObject(ent);
    }

    bool KeepRunning() const
    {
        return keepRunning_;
    }

    void RenderOneFrame()
    {
        // 处理消息
        Ogre::WindowEventUtilities::messagePump();
        keepRunning_ = root_->renderOneFrame();
    }

    int StartUp()
    {
        root_ = new Ogre::Root("plugins_d.cfg");
        if (!root_->showConfigDialog())
            return -1;

        Ogre::RenderWindow* window = root_->initialise(true, "HKX");
        sceneMgr_ = root_->createSceneManager(Ogre::ST_GENERIC);

        Ogre::Camera* camera = sceneMgr_->createCamera("camera");
        camera->setPosition(Ogre::Vector3(0, 0, 50));
        camera->lookAt(0, 0, 0);
        camera->setNearClipDistance(5);

        Ogre::Viewport* vp = window->addViewport(camera, 0, 0, 0, 1.0, 1.0);
        vp->setBackgroundColour(Ogre::ColourValue(0.0, 0.0, 0.0, 0.0));
        camera->setAspectRatio(Ogre::Real(vp->getActualWidth()) / Ogre::Real(vp->getActualHeight()));

        frameListener_ = new MyFrameListener(window, camera);
        root_->addFrameListener(frameListener_);

        LoadResources();
        CreateScene();
//        root_->startRendering();

        return 0;
    }

private:
    Ogre::Root* root_;
    Ogre::SceneManager* sceneMgr_;
    MyFrameListener*    frameListener_;

    bool                keepRunning_;
};


int main()
{
    MyAppliaction app;
    app.StartUp();

    while(app.KeepRunning())
    {
        app.RenderOneFrame();
    }

    return 0;
}

添加合成器、地面、光照、阴影：

#include "ogre/Ogre.h"
#include "ois/OIS.h"

class MyFrameListener : public Ogre::FrameListener
{
public:
    MyFrameListener(Ogre::RenderWindow* win, Ogre::Camera* cam, Ogre::Viewport* vp)
    {
        camera_ = cam;
        movementSpeed_ = 50.0f;
        vp_ = vp;

        size_t winHandle = 0;
        std::ostringstream winHandleStr;
        OIS::ParamList pl;
        win->getCustomAttribute("WINDOW", &winHandle);
        winHandleStr << winHandle;
        pl.insert(make_pair("WINDOW", winHandleStr.str()));
        inputMgr_ = OIS::InputManager::createInputSystem(pl);
        keyBoard_ = static_cast<OIS::Keyboard*>(inputMgr_->createInputObject(OIS::OISKeyboard, false));
        mouse_ = static_cast<OIS::Mouse*>(inputMgr_->createInputObject(OIS::OISMouse, false));

        bComp1On_ = false;
        bComp2On_ = false;
        bComp3On_ = false;
        bDown1_ = false;
        bDown2_ = false;
        bDown3_ = false;
    }

    ~MyFrameListener()
    {
        inputMgr_->destroyInputObject(keyBoard_);
        inputMgr_->destroyInputObject(mouse_);
        OIS::InputManager::destroyInputSystem(inputMgr_);
    }

    // 返回false则渲染结束
    bool frameStarted(const Ogre::FrameEvent& evt)
    {
        keyBoard_->capture();
        if (keyBoard_->isKeyDown(OIS::KC_ESCAPE))
            return false;

        Ogre::Vector3 translate(0, 0, 0);
        if (keyBoard_->isKeyDown(OIS::KC_W))
            translate += Ogre::Vector3(0, 0, -1);
        if (keyBoard_->isKeyDown(OIS::KC_S))
            translate += Ogre::Vector3(0, 0, 1);
        if (keyBoard_->isKeyDown(OIS::KC_A))
            translate += Ogre::Vector3(-1, 0, 0);
        if (keyBoard_->isKeyDown(OIS::KC_D))
            translate += Ogre::Vector3(1, 0, 0);
        camera_->moveRelative(translate * evt.timeSinceLastFrame * movementSpeed_);

        mouse_->capture();
        float rotX = mouse_->getMouseState().X.rel * evt.timeSinceLastFrame * -1;
        float rotY = mouse_->getMouseState().Y.rel * evt.timeSinceLastFrame * -1;
        camera_->yaw(Ogre::Radian(rotX));
        camera_->pitch(Ogre::Radian(rotY));

        if (keyBoard_->isKeyDown(OIS::KC_1) && !bDown1_)
        {
            bDown1_ = true;
            bComp1On_ = !bComp1On_;
            Ogre::CompositorManager::getSingleton().setCompositorEnabled(vp_, "Compositor1", bComp1On_);
        }
        if (keyBoard_->isKeyDown(OIS::KC_2) && !bDown2_)
        {
            bDown2_ = true;
            bComp2On_ = !bComp2On_;
            Ogre::CompositorManager::getSingleton().setCompositorEnabled(vp_, "Compositor2", bComp2On_);
        }
        if (keyBoard_->isKeyDown(OIS::KC_3) && !bDown3_)
        {
            bDown3_ = true;
            bComp3On_ = !bComp3On_;
            Ogre::CompositorManager::getSingleton().setCompositorEnabled(vp_, "Compositor3", bComp3On_);
        }
        if (!keyBoard_->isKeyDown(OIS::KC_1))
            bDown1_ = false;
        if (!keyBoard_->isKeyDown(OIS::KC_2))
            bDown2_ = false;
        if (!keyBoard_->isKeyDown(OIS::KC_3))
            bDown3_ = false;

        return true;
    }

    // 返回false则渲染结束
    bool frameRenderingQueued(const Ogre::FrameEvent& evt)
    {
        return true;
    }

    // 返回false则渲染结束
    bool frameEnded(const Ogre::FrameEvent& evt)
    {
        return true;
    }

private:
    OIS::InputManager* inputMgr_;
    OIS::Keyboard*     keyBoard_;
    OIS::Mouse*        mouse_;
    Ogre::Camera*      camera_;
    float              movementSpeed_;

    Ogre::Viewport*    vp_;
    // which compositor on
    bool               bComp1On_;
    bool               bComp2On_;
    bool               bComp3On_;
    bool               bDown1_;
    bool               bDown2_;
    bool               bDown3_;
};

class MyAppliaction
{
public:
    MyAppliaction()
    {
        root_ = 0;
        sceneMgr_ = 0;
        frameListener_ = 0;
        keepRunning_ = true;
    }

    ~MyAppliaction()
    {
        delete root_;
        delete frameListener_;
    }

    void LoadResources()
    {
        Ogre::ConfigFile cf;
        cf.load("resources_d.cfg");
        Ogre::ConfigFile::SectionIterator ite = cf.getSectionIterator();
        Ogre::String sectionName, typeName, dataName;
        while (ite.hasMoreElements())
        {
            sectionName = ite.peekNextKey();
            Ogre::ConfigFile::SettingsMultiMap* setting = ite.getNext();
            Ogre::ConfigFile::SettingsMultiMap::iterator i;
            for (i = setting->begin(); i != setting->end(); ++i)
            {
                typeName = i->first;
                dataName = i->second;
                Ogre::ResourceGroupManager::getSingleton().addResourceLocation(dataName, typeName, sectionName);
            }
        }
        Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
    }

    void CreateScene()
    {
        Ogre::Plane plane(Ogre::Vector3::UNIT_Y, -5);
        Ogre::MeshManager::getSingleton().createPlane("plane", 
            Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, plane, 1500, 1500, 200, 200,
            true, 1, 5, 5, Ogre::Vector3::UNIT_Z);
        Ogre::Entity* ground = sceneMgr_->createEntity("planeEntity", "plane");
        sceneMgr_->getRootSceneNode()->createChildSceneNode()->attachObject(ground);
        ground->setMaterialName("Examples/BeachStones");

        Ogre::Light* light = sceneMgr_->createLight("light1");
        light->setType(Ogre::Light::LT_DIRECTIONAL);
        light->setDirection(Ogre::Vector3(1, -1, 0));
        sceneMgr_->setShadowTechnique(Ogre::SHADOWTYPE_STENCIL_ADDITIVE);

        Ogre::Entity* ent = sceneMgr_->createEntity("Sinbad.mesh");
        sceneMgr_->getRootSceneNode()->createChildSceneNode()->attachObject(ent);
    }

    bool KeepRunning() const
    {
        return keepRunning_;
    }

    void RenderOneFrame()
    {
        // 处理消息
        Ogre::WindowEventUtilities::messagePump();
        keepRunning_ = root_->renderOneFrame();
    }

    int StartUp()
    {
        root_ = new Ogre::Root("plugins_d.cfg");
        if (!root_->showConfigDialog())
            return -1;

        Ogre::RenderWindow* window = root_->initialise(true, "HKX");
        sceneMgr_ = root_->createSceneManager(Ogre::ST_GENERIC);

        Ogre::Camera* camera = sceneMgr_->createCamera("camera");
        camera->setPosition(Ogre::Vector3(0, 0, 50));
        camera->lookAt(0, 0, 0);
        camera->setNearClipDistance(5);

        Ogre::Viewport* vp = window->addViewport(camera, 0, 0, 0, 1.0, 1.0);
        vp->setBackgroundColour(Ogre::ColourValue(0.0, 0.0, 0.0, 0.0));
        camera->setAspectRatio(Ogre::Real(vp->getActualWidth()) / Ogre::Real(vp->getActualHeight()));

        frameListener_ = new MyFrameListener(window, camera, vp);
        root_->addFrameListener(frameListener_);

        // 添加三个合成器
        Ogre::CompositorManager::getSingleton().addCompositor(vp, "Compositor1");
        Ogre::CompositorManager::getSingleton().addCompositor(vp, "Compositor2");
        Ogre::CompositorManager::getSingleton().addCompositor(vp, "Compositor3");

        LoadResources();
        CreateScene();
//        root_->startRendering();

        return 0;
    }

private:
    Ogre::Root* root_;
    Ogre::SceneManager* sceneMgr_;
    MyFrameListener*    frameListener_;

    bool                keepRunning_;
};


int main()
{
    MyAppliaction app;
    app.StartUp();

    while(app.KeepRunning())
    {
        app.RenderOneFrame();
    }

    return 0;
}