/* -*-c++-*-
 * testEffects - testeffects (.h & .cpp) - Using 'The MIT License'
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include <dtABC/application.h>
#include <dtCore/effectmanager.h>
#include <dtCore/globals.h>
#include <dtCore/keyboard.h>
#include <dtCore/object.h>
#include <dtCore/particlesystem.h>
#include <dtCore/transform.h>
#include <cmath>
#include <dtCore/camera.h>
#include <dtCore/system.h>

using namespace dtCore;
using namespace dtABC;

const std::string kHighExplosiveDetonation = "HighExplosiveDetonation";
const std::string kSmokeDetonation = "SmokeDetonation";

class Updater : public Base
{
public:

   Updater(Keyboard* keyboard, EffectManager* effectManager,
           Object* entity, dtCore::Camera* camera)
      : Base("Updater")
      , mKeyboard(keyboard)
      , mEffectManager(effectManager)
      , mEntity(entity)
      , mCamera(camera)
      , mAngle(0.0f)
      , mCameraHeading(0.0f)
      , mCameraPitch(0.0f)
   {
      AddSender(&dtCore::System::GetInstance());
   }

   virtual void OnMessage(MessageData* data)
   {
      if (data->message == dtCore::System::MESSAGE_PRE_FRAME)
      {
         if (mKeyboard->GetKeyState(osgGA::GUIEventAdapter::KEY_Escape))
         {
            System::GetInstance().Stop();
         }

         const double delta = *static_cast<const double*>(data->userData);

         float value = float(rand()) / RAND_MAX;

         if (value < delta * 0.25f)
         {
            osg::Vec3 location;

            location[0] = 100*(float(rand()) / RAND_MAX) - 50;
            location[1] = 100*(float(rand()) / RAND_MAX) + 50;
            location[2] = 100*(float(rand()) / RAND_MAX) - 50;

            mEffectManager->AddDetonation(location, kHighExplosiveDetonation);
         }

         mAngle = mAngle + 45.0f * delta;

         if (mAngle > 360)
         {
            mAngle -= 360.0f;
         }

         mPosition.SetTranslation(40 * cosf(osg::DegreesToRadians(mAngle)),
                                  100 + 40 * sinf(osg::DegreesToRadians(mAngle)),
                                  0 );
         mPosition.SetRotation(mAngle, 0, -45.0);

         mEntity->SetTransform(mPosition);

         if (mKeyboard->GetKeyState(osgGA::GUIEventAdapter::KEY_Up))
         {
            mCameraPitch += delta*45.0;
         }
         if (mKeyboard->GetKeyState(osgGA::GUIEventAdapter::KEY_Down))
         {
            mCameraPitch -= delta*45.0;
         }
         if (mKeyboard->GetKeyState(osgGA::GUIEventAdapter::KEY_Left))
         {
            mCameraHeading += delta*45.0;
         }
         if (mKeyboard->GetKeyState(osgGA::GUIEventAdapter::KEY_Right))
         {
            mCameraHeading -= delta*45.0;
         }

         mPosition.SetTranslation(0.0f, -50.0f, 0.0f);
         mPosition.SetRotation(mCameraHeading, mCameraPitch, 0.0f);

         mCamera->SetTransform(mPosition);
      }
   }


private:

   RefPtr<Keyboard> mKeyboard;
   RefPtr<EffectManager> mEffectManager;
   RefPtr<Object> mEntity;
   RefPtr<Camera> mCamera;
   Transform mPosition;
   float mAngle;
   float mCameraHeading;
   float mCameraPitch;
};

class TestEffectsApp : public dtABC::Application
{

public:
   TestEffectsApp(const std::string& configFilename = "config.xml")
      : Application(configFilename)
   {
   }

   virtual void Config()
   {
      Application::Config();

      Transform position(0.0f, -50.0f, 0.0f);
      GetCamera()->SetTransform(position);

      entity = new Object("UH-1N");
      entity->LoadFile("models/uh-1n.ive");
      AddDrawable(entity.get());

      smoke = new ParticleSystem;
      smoke->LoadFile("effects/smoke.osg");

      entity->AddChild(smoke.get());

      effectManager = new EffectManager;
      effectManager->AddDetonationTypeMapping(kHighExplosiveDetonation,
                                              "effects/explosion.osg");
      effectManager->AddDetonationTypeMapping(kSmokeDetonation,
                                              "effects/smoke.osg");

      AddDrawable(effectManager.get());

      updater = new Updater(GetKeyboard(),
                            effectManager.get(),
                            entity.get(),
                            GetCamera());

   }

   RefPtr<Object> entity;
   RefPtr<ParticleSystem> smoke;
   RefPtr<EffectManager> effectManager;
   RefPtr<Updater> updater;

};

int main()
{
   std::string dataPath = dtCore::GetDeltaDataPathList();
   dtCore::SetDataFilePathList(dataPath + ";" +
      dtCore::GetDeltaRootPath() + "/examples/data" + ";");

   RefPtr<TestEffectsApp> app = new TestEffectsApp("config.xml");

   app->Config();
   app->Run();

   return 0;
}