/*   ORXONOX - the hottest 3D action shooter ever to exist
 *                    > www.orxonox.net <
 *
 *
 *   License notice:
 *
 *   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
 *   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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      Viviane Yang
 *   Co-authors:
 *      ...
 *
 */



/**
    @file Asteroids2DStone.cc

    @brief Implementation of the Asteroids2DStone class.

    TO DO:  
    - when to split? It does not work if you override kill() function...->damage() function?
*/ 

#include "Asteroids2DStone.h"
#include "Asteroids2D.h"
#include "Asteroids2DShip.h"
#include "core/CoreIncludes.h"
#include "util/Math.h"

namespace orxonox
{
    RegisterClass(Asteroids2DStone);

    Asteroids2DStone::Asteroids2DStone(Context* context) : Pawn(context)
    {
        RegisterObject(Asteroids2DStone);
        this->size = rand()%3+1;
        this->width = 1043;
        this->height = 646;
        this->setPosition(randomPosition(this->width, this->height));
        this->setCollisionType(WorldEntity::CollisionType::Dynamic);
        this->setVelocity(randomVelocity(MAX_SPEED));
    }

    Asteroids2DStone::Asteroids2DStone(Context* c, int sze, Vector3 pos) : Pawn(c)
    {
        RegisterObject(Asteroids2DStone);
        this->size = sze;
        this->width = 1043;
        this->height = 646;
        this->setPosition(pos);
        this->setCollisionType(WorldEntity::CollisionType::Dynamic);
        this->setVelocity(randomVelocity(MAX_SPEED));
    }

    Vector3 Asteroids2DStone::randomPosition(float maxwidth, float maxheight)
    {
        Vector3 pos;
        pos.x = rnd(-maxwidth/2, maxwidth/2);
        pos.y = 0;
        pos.z = rnd(-maxheight/2, maxheight/2);
        return pos;
    }

    Vector3 Asteroids2DStone::randomVelocity(float maxspeed)
    {
        Vector3 vel;
        vel.x = rnd(-maxspeed, maxspeed);
        vel.y = 0;
        vel.z = rnd(-maxspeed, maxspeed);
        return vel;
    }


    void Asteroids2DStone::tick(float dt)
    {
        SUPER(Asteroids2DStone, tick, dt);
        Vector3 pos = this->getPosition();
        Vector3 vel = this->getVelocity();

        //ensure that the stone bounces from the playing field borders
        if(pos.x > width/2  || pos.x < -width/2)  vel.x = -vel.x;
        if(pos.z > height/2 || pos.z < -height/2) vel.z = -vel.z;
        this->setVelocity(vel);

        //2D movement, position should always = 0 on y-axis
        if(pos.y!=0) pos.y = 0;
        this->setPosition(pos);
    }

    inline bool Asteroids2DStone::collidesAgainst(WorldEntity* otherObject, const btCollisionShape* ownCollisionShape, btManifoldPoint& contactPoint)
    {
        if(orxonox_cast<Asteroids2DShip*>(otherObject))
        {
            split();
        }
        return false;
    }

    void Asteroids2DStone::damage(float damage, float healthdamage, float shielddamage, Pawn* originator, const btCollisionShape* cs)
    {
        if (getGame() && orxonox_cast<Asteroids2DShip*>(originator) != nullptr)
            getGame()->addPoints(100);
        split();
        //Pawn::damage(damage, healthdamage, shielddamage, originator, cs);
    }

    Asteroids2D* Asteroids2DStone::getGame()
    {
        if (game == nullptr)
        {
            for (Asteroids2D* asteroids : ObjectList<Asteroids2D>())
                game = asteroids;
        }
        return game;
    }

    void Asteroids2DStone::split()
    {
        //orxout() << "split" << endl;
        if(size == 3)
        {
            Asteroids2DStone* newStone1 = new Asteroids2DStone(this->getContext(), 2, this->getPosition());
            newStone1->addTemplate("stone2");
            Asteroids2DStone* newStone2 = new Asteroids2DStone(this->getContext(), 2, this->getPosition());
            newStone2->addTemplate("stone2");

        }else if(size == 2){


            //Templates can be found in data/levels/templates/asteroidsAsteroids2D.oxt
            Asteroids2DStone* newStone1 = new Asteroids2DStone(this->getContext(), 1, this->getPosition());
            newStone1->addTemplate("stone1");
            Asteroids2DStone* newStone2 = new Asteroids2DStone(this->getContext(), 1, this->getPosition());
            newStone2->addTemplate("stone1");
        }   
        this->death();
    }

}