/*
 *   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:
 *      Daniel 'Huty' Haggenmueller
 *   Co-authors:
 *      ...
 *
 */

/**
    @file
    @brief Definition of ModifierPickup (temporary(?) pickup for testing).
*/

#ifndef _ModifierPickup_H__
#define _ModifierPickup_H__

#include "OrxonoxPrereqs.h"

#include <climits>
#include <map>

#include "tools/Timer.h"
#include "ModifierType.h"
#include "PassiveItem.h"

namespace orxonox
{
    /**
    @brief Class for a (temporary) modifier effect.
    @author Daniel 'Huty' Haggenmueller
    */
    //TODO: More elaborate comments.
    class _OrxonoxExport ModifierPickup : public PassiveItem
    {
        //TODO: What does being derived from PassiveItem add exactly? Probably better to kill PassiveItem and just derive from BaseItem.
        //Include ModifierType here, no additional header file needed for that, imo.
        public:
            ModifierPickup(BaseObject* creator);
            virtual ~ModifierPickup();

            virtual void XMLPort(Element& xmlelement, XMLPort::Mode mode); //!< To create a ModifierPickup through the level file.

            virtual bool pickedUp(Pawn* pawn); //!< Override of the BaseItem::pickedUp() method.
            virtual bool dropped(Pawn* pawn); //!< Override of the BaseItem::dropped() method

            //TODO: Where does this INT_MAX come from? Comment.
            virtual int getMaxCarryAmount() //!< Allow the player to carry infinite ModPickups
                { return INT_MAX; }

            /**
            @brief Get the duration of this pickup.
            @return Returns how long the effect holds on.
            */
            inline float getDuration() const
                { return this->duration_; }
            /**
            @brief Set the duration of this pickup.
            @param duration How long the effect should hold.
            */
            //TODO: Better be private?
            inline void setDuration(float duration)
                { this->duration_ = duration; }

            //TODO: Shouldn't these all be seperate pickup items? But, then, would this class really be needed? What does it actually add?
            //Duration! Thus create two virtual functions addEffect() and removeEffect().
            //Export the ideas here into seperate, individual subclasses.
            //Shouldn't this, as an item be in the items folder? or is it, as merely the equivalent of an abstract class not specific enough?
            //Specify what ModifierItem should do exactly. If the limited duration is the core functionality, another name would probably more fitting.
            //Perhaps, limited effect duration could also just be another feature of BaseItem...
            /**
            @brief Get the amount of damage this pickup adds.
            @return Returns how much damage this pickup adds.
            */
            inline float getAdditiveDamage() const
                { return this->getAdditiveModifier(ModifierType::Damage); }
            /**
            @brief Get the factor by which this pickup multiplies the damage.
            @return Returns the factor by which to multiply damage.
            */
            inline float getMultiplicativeDamage() const
                { return this->getMultiplicativeModifier(ModifierType::Damage); }

            /**
            @brief Set the amount of damage this pickup adds.
            @param value How much damage this pickup adds.
            */
            inline void setAdditiveDamage(float value)
                { this->setAdditiveModifier(ModifierType::Damage, value); }
            /**
            @brief Set the factor by which this pickup multiplies the damage.
            @param value Factor by which to multiply damage.
            */
            inline void setMultiplicativeDamage(float value)
                { this->setMultiplicativeModifier(ModifierType::Damage, value); }

            /**
            @brief Get the amount of acceleration this pickup adds.
            @return Returns how much acceleration this pickup adds.
            */
            inline float getAdditiveAcceleration() const
                { return this->getAdditiveModifier(ModifierType::Acceleration); }
            /**
            @brief Get the factor by which this pickup multiplies the acceleration.
            @return Returns the factor by which to multiply acceleration.
            */
            inline float getMultiplicativeAcceleration() const
                { return this->getMultiplicativeModifier(ModifierType::Acceleration); }

            /**
            @brief Set the amount of acceleration this pickup adds.
            @param value How much acceleration this pickup adds.
            */
            inline void setAdditiveAcceleration(float value)
                { this->setAdditiveModifier(ModifierType::Acceleration, value); }
            /**
            @brief Set the factor by which this pickup multiplies the acceleration.
            @param value Factor by which to multiply acceleration.
            */
            inline void setMultiplicativeAcceleration(float value)
                { this->setMultiplicativeModifier(ModifierType::Acceleration, value); }

            //TODO: Make private?
            void timerCallback(Pawn* pawn);     //!< Method called when the timer runs out.
        private:
            float getAdditiveModifier(ModifierType::Value type) const;               //!< Get the additive modifier for a given ModifierType.
            float getMultiplicativeModifier(ModifierType::Value type) const;         //!< Get the multiplicative modifier for a given ModifierType.
            void setAdditiveModifier(ModifierType::Value type, float value);         //!< Set the additive modifier for a given ModifierType.
            void setMultiplicativeModifier(ModifierType::Value type, float value);   //!< Set the multiplicative modifier for a given ModifierType

            std::map<ModifierType::Value, float> additiveModifiers_;                 //!< Map of additive modifiers, indexed by ModifierType.
            std::map<ModifierType::Value, float> multiplicativeModifiers_;           //!< Map of multiplicative modifiers, indexed by ModifierType.

            float duration_;                                                         //!< Duration of this pickup's effect (0 for unlimited).
            Timer timer_;                                                            //!< Timer used if the pickup's effect has a time limit.
    };
}

#endif /* _ModifierPickup_H__ */