/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004-2006 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   ### File Specific
   main-programmer: Nicolas Schlumberger, Marc Schaerrer
   co-programmer: Benjamin Grauer

*/


#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_WEAPON

#include "spike_ball.h"

#include "state.h"
#include "model.h"

#include "particles/dot_emitter.h"
#include "particles/sprite_particles.h"

#include <cassert>
#include "debug.h"

#include "space_ships/space_ship.h"

#include "weapons/weapon.h"


#include "class_id_DEPRECATED.h"
ObjectListDefinition(SpikeBall);
CREATE_FAST_FACTORY_STATIC(SpikeBall);

/**
 *  standard constructor
*/
SpikeBall::SpikeBall () : Projectile()
{
  this->registerObject(this, SpikeBall::_objectList);

  this->loadModel("models/projectiles/spike_ball.obj", .25);

  this->setMinEnergy(1);
  this->setHealthMax(0);
  this->lifeSpan = 1.0;

  this->emitter = new DotEmitter(100, 5, M_2_PI);
  this->emitter->setParent(this);
  this->emitter->setSpread(M_PI, M_PI);
  this->emitter->setEmissionRate(300.0);
  this->emitter->setEmissionVelocity(50.0);

  this->speed = 150;

  this->angle = 0;
  this->rotationSpeed = 0;
/*
  this->halo = new Billboard();
  this->halo->setSize(.35, .35);
  this->halo->setTexture("hbolt_halo.png");*/
}


/**
 *  standard deconstructor
*/
SpikeBall::~SpikeBall ()
{
  // delete this->emitter;

  /* this is normaly done by World.cc by deleting the ParticleEngine */
  if (SpikeBall::explosionParticles != NULL && SpikeBall::objectList().size() <= 1)
  {
    //if (ClassList::exists(SpikeBall::explosionParticles, CL_PARTICLE_SYSTEM))
    //  delete SpikeBall::explosionParticles;
    PRINTF(1)("Deleting SpikeBall Particles\n");
    SpikeBall::explosionParticles = NULL;
  }

}

SpriteParticles* SpikeBall::explosionParticles = NULL;

void SpikeBall::activate()
{
  if (unlikely(SpikeBall::explosionParticles == NULL))
  {
    SpikeBall::explosionParticles = new SpriteParticles(1000);
    SpikeBall::explosionParticles->setName("BoltExplosionParticles");
    SpikeBall::explosionParticles->setLifeSpan(.5, .3);
    SpikeBall::explosionParticles->setRadius(0.0, 10.0);
    SpikeBall::explosionParticles->setRadius(.5, 6.0);
    SpikeBall::explosionParticles->setRadius(1.0, 3.0);
    SpikeBall::explosionParticles->setColor(0.0, 1,1,0,.9);
    SpikeBall::explosionParticles->setColor(0.5, .8,.8,0,.5);
    SpikeBall::explosionParticles->setColor(1.0, .8,.8,.7,.0);
  }

  this->setDamage(5);
  this->setHealth(0);
}


void SpikeBall::deactivate()
{
  assert (SpikeBall::explosionParticles != NULL);
  SpikeBall::explosionParticles->removeEmitter(this->emitter);
  this->lifeCycle = 0.0;

  this->toList(OM_NULL);
  this->removeNode();
  SpikeBall::fastFactory->kill(this);
}


void SpikeBall::collidesWith(WorldEntity* entity, const Vector& location)
{
  PRINTF(0)("Collision with SpikeBall\n");
  if (this->hitEntity != entity && entity->isA(CL_NPC))
    this->destroy( entity );
  this->hitEntity = entity;
  dynamic_cast<SpaceShip*>(entity)->damage(this->getDamage(),0);
//   this->deactivate();
}
/*
void SpikeBall::blow()
{
  const float* v = this->getModel()->getVertexArray();
  Projectile* pj = NULL;

  for (unsigned int i = 0; i < this->getModel()->getVertexCount(); i++)
  {

//     v = this->getModel()->getModelInfo

      pj  = this->getProjectile();
      if (pj == NULL)
        return;

      if (v[i].x * v[i].x + v[i].y * v[i].y + v[i].z * v[i].z > 4)
      {
        pj->setParent(PNode::getNullParent());
        pj->setAbsCoor(this->getAbsCoor() + v);
        pj->setAbsDir(v->getNormalized() * this->speed);
        pj->activate();
      }
  }
}*/


/**
 *  signal tick, time dependent things will be handled here
 * @param dt time since last tick
*/
void SpikeBall::tick (float dt)
{
  //Vector v = *this->flightDirection * ( this->speed * time * 1000 + 0.1);
  Vector v = this->velocity * dt;
  this->shiftCoor(v);

  if (this->tickLifeCycle(dt)){
//     this->blow();
    this->deactivate();
  }

  angle += rotationSpeed * dt;
}

/**
 *  the function gets called, when the projectile is destroyed
*/
void SpikeBall::destroy (WorldEntity* killer)
{
  Projectile::destroy( killer );
  PRINTF(5)("DESTROY SpikeBall\n");
  this->lifeCycle = .95; //!< @todo calculate this usefully.

  this->emitter->setSystem(SpikeBall::explosionParticles);
}


void SpikeBall::draw () const
{
  glPushAttrib(GL_ENABLE_BIT);
  //glDisable(GL_LIGHTING);

  glMatrixMode(GL_MODELVIEW);
  glPushMatrix();

  float matrix[4][4];
  glTranslatef (this->getAbsCoor ().x, this->getAbsCoor ().y, this->getAbsCoor ().z);

  glRotatef(angle, 1.0, 0.0, 0.0);
  this->getAbsDir().matrix (matrix);
  glMultMatrixf((float*)matrix);
  this->getModel()->draw();

  this->halo->draw();

  glPopMatrix();

  glPopAttrib();
}