/*
 *   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:
 *      Fabian 'x3n' Landau
 *   Co-authors:
 *      ...
 *
 */

/**
    @file ParticleProjectile.h
    @brief Implementation of the ParticleProjectile class.
*/

#include "BallProjectile.h"

#include <OgreParticleEmitter.h>
#include "core/CoreIncludes.h"
#include "tools/ParticleInterface.h"
#include "Scene.h"
#include "core/command/Executor.h"
#include "util/Convert.h"

namespace orxonox
{
    RegisterClass(BallProjectile);

    BallProjectile::BallProjectile(Context* context) : BillboardProjectile(context)
    {
        RegisterObject(BallProjectile);
        this->textureIndex_ = 1;
        this->setMass(0.1f);
        this->maxTextureIndex_ = 8;
        this->setDestroyAfterCollision(false); //I want the ball to bounce, not to be destroyed

        //setEffect("Orxonox/sparks2");
    }

    void BallProjectile::registerVariables()
    {
        registerVariable(this->materialBase_);
    }

    /**
    @brief
        Set the material.
    @param material
        The name of the material. Material names with 1 to 8 appended must exist.
    */
    void BallProjectile::setMaterial(const std::string& material)
    {
        this->materialBase_ = material;

        BillboardProjectile::setMaterial(material + multi_cast<std::string>(this->textureIndex_));
    }

    /**
    @brief
        Change the texture.
    */
    void BallProjectile::changeTexture()
    {
        this->textureIndex_++;
        if (this->textureIndex_ > this->maxTextureIndex_)
            this->textureIndex_ = 1;

        this->setMaterial(this->materialBase_);
    }

    void BallProjectile::Bounce(WorldEntity* otherObject, btManifoldPoint& contactPoint, const btCollisionShape* cs) {

        Vector3 velocity = this->getVelocity();
        Vector3 positionOtherObject = otherObject->getPosition();
        Vector3 contactPosition = this->getPosition();
        orxout() << "About to Bounce >D" << endl;
        //if (positionOtherObject.y < 0) {
            //this.destroy()
        //}S
        //else {
        
            int distance_X = positionOtherObject.x - contactPosition.x;
            int distance_Y = positionOtherObject.y - contactPosition.y;

            if (distance_X < 0)
                distance_Y = -distance_Y;
    

            if (distance_Y < 0)
                distance_X = -distance_X;

            if (distance_X < distance_Y)
                velocity.y = -velocity.y;
            if (distance_Y < distance_X)
                velocity.x = -velocity.x;
            else {
                velocity.x = -velocity.x;
                velocity.y = -velocity.y;
            }
        //}
    }

/**
    @brief
        The function called when a projectile hits another thing.
        Calls the hit-function, starts the shield recharge countdown, displays visual hit effects defined in Pawn.
        Needs to be called in the collidesAgainst() function by every Class directly inheriting from BasicProjectile.
    @param otherObject
        A pointer to the object the Projectile has collided against.
    @param contactPoint
        A btManifoldPoint indicating the point of contact/impact.
    @param cs
        The btCollisionShape of the other object
    @return
        Returns true if the collision resulted in a successful hit.
    @see Pawn.h
    */
    
    bool BallProjectile::processCollision(WorldEntity* otherObject, btManifoldPoint& contactPoint, const btCollisionShape* cs)
    {

        orxout() << "wanna bounce..." << endl;
        bool result = BasicProjectile::processCollision(otherObject, contactPoint, cs);
        Bounce(otherObject, contactPoint, cs);
        orxout() << "BOUNCED!" << endl;

        return result;
    }
}