/*
 *   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:
 *      Jannis Holzer
 *      Fabien Vultier
 *   Co-authors:
 *      ...
 *
 */

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

#include "MineProjectile.h"

#include "core/CoreIncludes.h"
#include "graphics/Model.h"
#include "core/command/Executor.h"
#include "graphics/ParticleSpawner.h"
#include "worldentities/pawns/Pawn.h"
#include "core/EventIncludes.h"
#include "sound/WorldSound.h"

namespace orxonox
{
    RegisterClass(MineProjectile);

    const float MineProjectile::collisionShapeRadius_ = 15.0f;
    const float MineProjectile::damageRadius_ = 200.0f;
    const float MineProjectile::triggerRadius_ = 100.0f;

    MineProjectile::MineProjectile(Context* context) : MovableEntity(context), BasicProjectile()
    {
        RegisterObject(MineProjectile);

        this->bAllowExplosion_ = false;
        this->maxTimeUntilExplosion_ = 10.0f;
        this->timeUntilActivation_ = 1.0f;

        //Create movable entities
        rings1_ = new MovableEntity(this->getContext());
        this->attach(rings1_);
        rings1_->setPosition(Vector3(0.0,0.0,0.0));
        rings1_->setAngularVelocity(Vector3(0.0,5.0,0.0));

        rings2_ = new MovableEntity(this->getContext());
        this->attach(rings2_);
        rings2_->setPosition(Vector3(0.0,0.0,0.0));
        rings2_->setAngularVelocity(Vector3(0.0,0.0,5.0));

        core_ = new MovableEntity(this->getContext());
        this->attach(core_);
        core_->setPosition(Vector3(0.0,0.0,0.0));
        core_->setAngularVelocity(Vector3(2.5,2.5,0.0));

        //Create Models
        //Core
        modelCore_ = new Model(this->getContext());
        modelCore_->setMeshSource("Mine_Core.mesh");
        modelCore_->setScale(15.0);
        core_->attach(modelCore_);
        modelCore_->setPosition(Vector3(0,0,0));

        //Ring 1
        modelRing1_ = new Model(this->getContext());
        modelRing1_->setMeshSource("Mine_Ring.mesh");
        modelRing1_->setScale(15.0);
        rings1_->attach(modelRing1_);
        modelRing1_->setPosition(Vector3(0,0,0));
        modelRing1_->yaw(Degree(0));
        //Ring 2
        modelRing2_ = new Model(this->getContext());
        modelRing2_->setMeshSource("Mine_Ring.mesh");
        modelRing2_->setScale(15.0);
        rings1_->attach(modelRing2_);
        modelRing2_->setPosition(Vector3(0,0,0));
        modelRing2_->yaw(Degree(180));
        //Ring 3
        modelRing3_ = new Model(this->getContext());
        modelRing3_->setMeshSource("Mine_Ring.mesh");
        modelRing3_->setScale(15.0);
        rings2_->attach(modelRing3_);
        modelRing3_->setPosition(Vector3(0,0,0));
        modelRing3_->yaw(Degree(90));
        //Ring 4
        modelRing4_ = new Model(this->getContext());
        modelRing4_->setMeshSource("Mine_Ring.mesh");
        modelRing4_->setScale(15.0);
        rings2_->attach(modelRing4_);
        modelRing4_->setPosition(Vector3(0,0,0));
        modelRing4_->yaw(Degree(270));

        emitter_ = nullptr;

        if (GameMode::isMaster())
        {
            this->setMass(10.0f);
            this->setLinearDamping(0.5f);
            this->setAngularDamping(0.1f);
            this->enableCollisionCallback();
            this->setCollisionResponse(true);
            this->setCollisionType(CollisionType::Dynamic);

            // Create a sphere collision shape and attach it to the projectile.
            collisionShape_ = new SphereCollisionShape(this->getContext());
            collisionShape_->setRadius(collisionShapeRadius_);
            this->attachCollisionShape(collisionShape_);
            collisionShape_->setPosition(Vector3(0,0,0));

            // Create a distance trigger and attach it to the projectile.
            distanceTrigger_ = new DistanceTrigger(this->getContext());
            this->attach(distanceTrigger_);
            distanceTrigger_->setPosition(Vector3(0,0,0));
            distanceTrigger_->setDistance(triggerRadius_);
            distanceTrigger_->addTarget("Pawn");
            distanceTrigger_->setStayActive(false);

            this->addEventSource(distanceTrigger_, "explode");
        }
    }

    MineProjectile::~MineProjectile()
    {
        if (this->isInitialized())
        {
            modelCore_->destroy();
            modelRing1_->destroy();
            modelRing2_->destroy();
            modelRing3_->destroy();
            modelRing4_->destroy();

            if (distanceTrigger_)
            {
                distanceTrigger_->destroy();
            }
            if (emitter_)
            {
                emitter_->destroy();
            }
        }
    }

    /**
    @brief
        XMLPort for MineProjectile.
    */
    void MineProjectile::XMLEventPort(Element& xmlelement, XMLPort::Mode mode)
    {
        SUPER(MineProjectile, XMLEventPort, xmlelement, mode);
        XMLPortEventState(MineProjectile, BaseObject, "explode", explode, xmlelement, mode);
    }

    /**
    @brief
        Max Time; after this time runs out,the Mine explodes.
    */
    void MineProjectile::setMaxTimeUntilExplosion(float maxTimeUntilExplosion)
    {
        if (maxTimeUntilExplosion >= 0)
        {
            this->maxTimeUntilExplosion_ = maxTimeUntilExplosion;
            if (GameMode::isMaster())
            {
                this->explodeTimer_.setTimer(this->maxTimeUntilExplosion_, false, createExecutor(createFunctor(&MineProjectile::explode, this)));
            }
        }
        else
        {
            this->maxTimeUntilExplosion_ = 0;
        }
    }

    /**
    @brief
        The mine can only explode when the activation time has run out.
    */
    void MineProjectile::setTimeUntilActivation(float timeUntilActivation)
    {
        timeUntilActivation_ = timeUntilActivation;

        if (GameMode::isMaster())
        {
            this->activationTimer_.setTimer(this->timeUntilActivation_, false, createExecutor(createFunctor(&MineProjectile::allowExplosion, this)));
        }
    }

    /**
    @brief
        Mine explodes, deals damage to pawn within range and destroys itself.
    */
    void MineProjectile::explode()
    {
        if (bAllowExplosion_)
        {
            if (GameMode::isMaster())
            {
                // Damage all pawns within the damage radius
                for (Pawn* pawn : ObjectList<Pawn>())
                {
                    Vector3 distanceVector = pawn->getWorldPosition()-this->getWorldPosition();
                    if(distanceVector.length()< damageRadius_)
                    {
                        pawn->hit(this->getShooter(), pawn->getWorldPosition(), nullptr, this->getDamage(), this->getHealthDamage(), this->getShieldDamage());
                    }
                }
            }

            this->destructionEffect();
            this->destroyLater();
        }
    }

    /**
    @brief
        Mine is ready to explode.
    */
    void MineProjectile::allowExplosion()
    {
        // Allow explosion
        bAllowExplosion_ = true;
        // Add particle effect
        emitter_ = new ParticleEmitter(this->getContext());
        this->attach(emitter_);
        emitter_->setOrientation(this->getOrientation());
        emitter_->setSource("Orxonox/mineparticle");  
    }

    void MineProjectile::destructionEffect()
    {
        ParticleSpawner *effect1, *effect2, *effect3;
       
        effect1 = new ParticleSpawner(this->getContext());
        effect2 = new ParticleSpawner(this->getContext());
        effect3 = new ParticleSpawner(this->getContext());

        effect1->setPosition(this->getPosition());
        effect1->setOrientation(this->getOrientation());
        effect1->setDestroyAfterLife(true);
        effect1->setSource("Orxonox/MineExpl");
        effect1->setLifetime(2.5f);

        effect2->setPosition(this->getPosition());
        effect2->setOrientation(this->getOrientation());
        effect2->setDestroyAfterLife(true);
        effect2->setSource("Orxonox/MineExpl1");
        effect2->setLifetime(2.5f);

        effect3->setPosition(this->getPosition());
        effect3->setOrientation(this->getOrientation());
        effect3->setDestroyAfterLife(true);
        effect3->setSource("Orxonox/MineExpl2");
        effect3->setLifetime(2.5f);

        // Explosion sound effect.
        WeakPtr<WorldSound> explosionSound_ = new WorldSound(getContext());
        explosionSound_->setSource("sounds/minesound.ogg");
        explosionSound_->setVolume(1.0);
        explosionSound_->play();
    }
}