#include "water.hpp"

namespace MWRender {
  Water::Water (Ogre::Camera *camera) : mCamera (camera), mViewport (camera->getViewport()), mSceneManager (camera->getSceneManager()) {
      std::cout << "1\n";
    try {
      Ogre::CompositorManager::getSingleton().addCompositor(mViewport, "Water", -1);
      Ogre::CompositorManager::getSingleton().setCompositorEnabled(mViewport, "Water", false);
    } catch(...) {
    }
    mIsUnderwater = false;

    mCamera->addListener(this);
        

    mWaterPlane = Ogre::Plane(Ogre::Vector3::UNIT_Y, 0);
    Ogre::MeshManager::getSingleton().createPlane("water", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,  mWaterPlane, 7000, 7000, 1, 1, true, 1, 3,5, Ogre::Vector3::UNIT_Z);

    mWater = mSceneManager->createEntity("Water", "water");
    mWater->setMaterialName("Examples/Water0");
    
    mWaterNode = mSceneManager->getRootSceneNode()->createChildSceneNode();
    mWaterNode->attachObject(mWater);
   
  }


  Water::~Water() {
    Ogre::MeshManager::getSingleton().remove("water");
    //Ogre::TextureManager::getSingleton().remove("refraction");
    //Ogre::TextureManager::getSingleton().remove("reflection");
    Ogre::CompositorManager::getSingleton().removeCompositorChain(mViewport);
  }


  void Water::preRenderTargetUpdate(const Ogre::RenderTargetEvent& evt) {
    mWater->setVisible(false);

    if (evt.source == mReflectionTarget) {
      mCamera->enableReflection(mWaterPlane);
    } else {
    }
  }

  void Water::postRenderTargetUpdate(const Ogre::RenderTargetEvent& evt) {
    mWater->setVisible(true);

    if (evt.source == mReflectionTarget) {
      mCamera->disableReflection();
    } else {
    }
  }

  void Water::checkUnderwater() {
    Ogre::Vector3 pos = mCamera->getPosition();
    if (mIsUnderwater && pos.y > 0) {
      try {
	Ogre::CompositorManager::getSingleton().setCompositorEnabled(mViewport, "Water", false);
      } catch(...) {
      }
      std::cout << "Removing water compositor" << "\n";
      mIsUnderwater = false;
    } 

    if (!mIsUnderwater && pos.y < 0) {
      try {
	Ogre::CompositorManager::getSingleton().setCompositorEnabled(mViewport, "Water", true);
      } catch(...) {
      }
      mIsUnderwater = true;
      std::cout << "Adding water compositor" << "\n";
    }
  }


  void Water::cameraPreRenderScene(Ogre::Camera *cam) {
    Ogre::Vector3 pos = cam->getPosition();
    
    if (pos != mOldCameraPos) {
      mWaterNode->setPosition(pos.x, 0, pos.z);
 
      mOldCameraPos = pos;
    }
  }

  void Water::cameraPostRenderScene(Ogre::Camera *cam) {
  }

  void Water::cameraDestroyed(Ogre::Camera *cam) {
  }

}