Trigger.h

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/*
 *   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:
 *      Benjamin Knecht
 *   Co-authors:
 *      ...
 *
 */

#ifndef _Trigger_H__
#define _Trigger_H__

#include "objects/ObjectsPrereqs.h"

#include <set>
#include <queue>

#include "tools/BillboardSet.h"

#include "TriggerBase.h"

namespace orxonox
{

    class _ObjectsExport Trigger : public TriggerBase
    {
        public:
            Trigger(Context* context); // Constructor. Registers and initializes the object.
            virtual ~Trigger();

            virtual void tick(float dt);

            inline bool isActive(void) const
                { return this->bActive_; }

            void delayChanged(void); // React to a change in delay.

            static void debugFlares(bool bVisible); // Set the visibility of all debug billboards of all Triggers.
            virtual void changedVisibility(); // React to a change of visibility of the trigger by adjusting the visibility of the debug billboards.

        protected:
            inline bool isTriggered()
                { return this->isTriggered(this->mode_); }
            virtual bool isTriggered(TriggerMode mode); // Check whether the Trigger should be triggered, given only its sub-triggers, given a specific mode.
            virtual void triggered(bool bIsTriggered); // Fires an event with the input triggered state.

        private:
            bool switchState(); // Switch (toggle) the activity (to the outside the triggered state) of the trigger.
            void storeState(); // Stores the state in the queue.
            
            bool checkAnd(); // Check whether all the sub-triggers of this Trigger are active.
            bool checkOr(); // Check whether at least one of the sub-triggers of this Trigger is active.
            bool checkXor(); // Check whether exactly one of the sub-triggers of this Trigger is active.
            
            void setBillboardColour(const ColourValue& colour); // Set the colour of the debug billboard.

            bool bActive_; 
            bool bTriggered_; 

            char latestState_; 
            float remainingTime_; 
            float timeSinceLastEvent_; 

            BillboardSet debugBillboard_; 

            std::queue<std::pair<float, char>> stateChanges_; 
    };

}

#endif /* _Trigger_H__ */