SkyX.cpp

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/*
--------------------------------------------------------------------------------
This source file is part of SkyX.
Visit http://www.paradise-studios.net/products/skyx/
 
Copyright (C) 2009-2012 Xavier Verguín González <xavyiy@gmail.com>
 
This program 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 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 Lesser General Public License for more details.
 
You should have received a copy of the GNU Lesser 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, or go to
http://www.gnu.org/copyleft/lesser.txt.
--------------------------------------------------------------------------------
*/
 
#pragma warning(disable:4355)
 
#include "SkyX.h"
 
namespace SkyX
{
    SkyX::SkyX(Ogre::SceneManager* sm, Controller* c)
        : Ogre::FrameListener()
        , Ogre::RenderTargetListener()
        , mSceneManager(sm)
        , mController(c)
        , mCamera(0)
        , mMeshManager(new MeshManager(this))
        , mAtmosphereManager(new AtmosphereManager(this))
        , mGPUManager(new GPUManager(this))
        , mMoonManager(new MoonManager(this))
        , mCloudsManager(new CloudsManager(this))
        , mRenderQueueGroups(RenderQueueGroups(Ogre::RENDER_QUEUE_SKIES_EARLY, Ogre::RENDER_QUEUE_3, Ogre::RENDER_QUEUE_4, Ogre::RENDER_QUEUE_2))
        , mCreated(false)
        , mLastCameraPosition(Ogre::Vector3(0,0,0))
        , mLastCameraFarClipDistance(-1)
        , mInfiniteCameraFarClipDistance(100000)
        , mVisible(true)
        , mLightingMode(LM_LDR)
        , mStarfield(true)
        , mTimeMultiplier(0.1f)
        , mTimeOffset(0.0f)
    {
        // Need to be instanced here, when SkyX::mSceneManager is valid
        mVCloudsManager = new VCloudsManager(this);
    }
 
    SkyX::~SkyX()
    {
        remove();
 
        delete mMeshManager;
        delete mAtmosphereManager;
        delete mGPUManager;
        delete mMoonManager;
        delete mCloudsManager;
        delete mVCloudsManager;
 
        if (mCfgFileManager)
            delete mCfgFileManager;
 
        if (mController->getDeleteBySkyX())
        {
            delete mController;
        }
    }
 
    void SkyX::create()
    {
        if (mCreated)
        {
            return;
        }
 
        mGPUManager->_notifySkydomeMaterialChanged();
 
        mMeshManager->create();
        mMeshManager->setMaterialName(mGPUManager->getSkydomeMaterialName());
 
        mAtmosphereManager->_update(mAtmosphereManager->getOptions(), true);
 
        if (mStarfield)
        {
            mGPUManager->setGpuProgramParameter(GPUManager::GPUP_FRAGMENT, "uTime", mTimeOffset*0.5f, false);
        }
 
        mGPUManager->setGpuProgramParameter(GPUManager::GPUP_VERTEX, "uLightDir", mController->getSunDirection());
        mGPUManager->setGpuProgramParameter(GPUManager::GPUP_FRAGMENT, "uLightDir", mController->getSunDirection());
 
        mMoonManager->create();
 
        setVisible(mVisible);
 
        mLastCameraPosition = Ogre::Vector3(0,0,0);
        mLastCameraFarClipDistance = -1;
 
        mCreated = true;
    }
 
    void SkyX::remove()
    {
        if (!mCreated)
        {
            return;
        }
 
        mCloudsManager->removeAll();
        mMeshManager->remove();
        mMoonManager->remove();
        mVCloudsManager->remove();
 
        mCamera = 0;
 
        mCreated = false;
    }
 
    void SkyX::update(const Ogre::Real& timeSinceLastFrame)
    {
        if (!mCreated)
        {
            return;
        }
 
        if (mTimeMultiplier != 0)
        {
            float timemultiplied = timeSinceLastFrame * mTimeMultiplier;
 
            mTimeOffset += timemultiplied;
 
            mController->update(timemultiplied);
 
            if (mStarfield)
            {
                mGPUManager->setGpuProgramParameter(GPUManager::GPUP_FRAGMENT, "uTime", mTimeOffset*0.5f, false);
            }
        }
 
        mGPUManager->setGpuProgramParameter(GPUManager::GPUP_VERTEX, "uLightDir", mController->getSunDirection());
        mGPUManager->setGpuProgramParameter(GPUManager::GPUP_FRAGMENT, "uLightDir", mController->getSunDirection());
 
        mMoonManager->updateMoonPhase(mController->getMoonPhase());
        mCloudsManager->update();
        mVCloudsManager->update(timeSinceLastFrame);
    }
 
    void SkyX::notifyCameraRender(Ogre::Camera* c)
    {
        if (!mCreated)
        {
            return;
        }
 
        mCamera = c;
        
        if (mLastCameraPosition != c->getDerivedPosition())
        {
            mMeshManager->getSceneNode()->setPosition(mCamera->getDerivedPosition());
 
            mLastCameraPosition = mCamera->getDerivedPosition();
        }
 
        if (mLastCameraFarClipDistance != c->getFarClipDistance())
        {
            mMeshManager->updateGeometry(c);
 
            mLastCameraFarClipDistance = mCamera->getFarClipDistance();
        }
 
        mMoonManager->updateGeometry(c);
 
        mVCloudsManager->notifyCameraRender(c);
    }
 
    void SkyX::setVisible(const bool& visible)
    {
        mVisible = visible;
 
        if (!mCreated)
        {
            return;
        }
 
        mMeshManager->getSceneNode()->setVisible(mVisible);
        mMoonManager->getMoonSceneNode()->setVisible(mVisible);
 
        if (mVCloudsManager->isCreated())
        {
            mVCloudsManager->getVClouds()->setVisible(mVisible);
        }
    }
 
    void SkyX::setRenderQueueGroups(const RenderQueueGroups& rqg)
    {
        mRenderQueueGroups = rqg;
 
        mVCloudsManager->getVClouds()->setRenderQueueGroups(
            VClouds::VClouds::RenderQueueGroups(mRenderQueueGroups.vclouds, mRenderQueueGroups.vcloudsLightningsUnder, mRenderQueueGroups.vcloudsLightningsOver));
 
        if (!mCreated)
        {
            return;
        }
 
        mMeshManager->getEntity()->setRenderQueueGroup(mRenderQueueGroups.skydome);
        mMoonManager->getMoonBillboard()->setRenderQueueGroup(mRenderQueueGroups.skydome+1);
    }
 
    void SkyX::setLightingMode(const LightingMode& lm)
    {
        mLightingMode = lm;
 
        if (!mCreated)
        {
            return;
        }
 
        mGPUManager->_notifySkydomeMaterialChanged();
 
        // Update skydome material
        mMeshManager->setMaterialName(mGPUManager->getSkydomeMaterialName());
        // Update layered clouds material
        mCloudsManager->registerAll();
        // Update ground passes materials and update textures gamma correction
        mGPUManager->_updateFP();
 
        // Update parameters
        mAtmosphereManager->_update(mAtmosphereManager->getOptions(), true);
    }
 
    void SkyX::setStarfieldEnabled(const bool& Enabled)
    {
        mStarfield = Enabled;
 
        if (!mCreated)
        {
            return;
        }
 
        mGPUManager->_notifySkydomeMaterialChanged();
 
        // Update skydome material
        mMeshManager->setMaterialName(mGPUManager->getSkydomeMaterialName());
 
        // Update parameters
        mAtmosphereManager->_update(mAtmosphereManager->getOptions(), true);
 
        if (mStarfield)
        {
            mGPUManager->setGpuProgramParameter(GPUManager::GPUP_FRAGMENT, "uTime", mTimeOffset*0.5f, false);
        }
 
        mGPUManager->setGpuProgramParameter(GPUManager::GPUP_VERTEX, "uLightDir", mController->getSunDirection());
        mGPUManager->setGpuProgramParameter(GPUManager::GPUP_FRAGMENT, "uLightDir", mController->getSunDirection());
    }
 
    bool SkyX::frameStarted(const Ogre::FrameEvent& e)
    {
        update(e.timeSinceLastFrame);
        return true;
    }
 
    void SkyX::preViewportUpdate(const Ogre::RenderTargetViewportEvent& evt)
    {
        notifyCameraRender(evt.source->getCamera());
    }
}