CameraPositionAction.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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.
//
//    Scorched3D 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 Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <engine/ScorchedContext.h>
#include <engine/ActionController.h>
#include <actions/CameraPositionAction.h>

CameraPositionAction::CameraPositionAction(FixedVector &showPosition,
                fixed showTime,
                unsigned int priority) : 
                ActionReferenced("CameraPositionAction"),
                totalTime_(0), showTime_(showTime),
                showPosition_(showPosition), showPriority_(priority)
{

}

CameraPositionAction::~CameraPositionAction()
{
        if (!context_->getServerMode())
        {
                CameraPositionActionRegistry::rmCameraPositionAction(this);
        }
}

void CameraPositionAction::init()
{
        if (!context_->getServerMode())
        {
                CameraPositionActionRegistry::addCameraPositionAction(this);
        }
        startTime_ = context_->getActionController().getActionTime();
}

void CameraPositionAction::simulate(fixed frameTime, bool &remove)
{
        totalTime_ += frameTime;
        if (totalTime_ > showTime_)
        {
                remove = true;
        }

        Action::simulate(frameTime, remove);
}

std::set<CameraPositionAction *> CameraPositionActionRegistry::actions_;
CameraPositionAction *CameraPositionActionRegistry::currentAction_ = 0;

void CameraPositionActionRegistry::addCameraPositionAction(CameraPositionAction *action)
{
        actions_.insert(action);
}

void CameraPositionActionRegistry::rmCameraPositionAction(CameraPositionAction *action)
{
        if (currentAction_ == action) currentAction_ = 0;
        actions_.erase(action);
}

CameraPositionAction *CameraPositionActionRegistry::getCurrentAction()
{
        // Check if the current action is still active
        if (actions_.find(currentAction_) == actions_.end())
        {
                // If the current action is not still going get another one
                currentAction_ = getCurrentBest();
        }
        else 
        {
                // If it is check that it is the best action
                CameraPositionAction *bestAction = getCurrentBest();
                if (bestAction)
                {
                        if (bestAction->getShowPriority() > currentAction_->getShowPriority())
                        {
                                currentAction_ = bestAction;
                        }
                }
        }

        return currentAction_;
}

CameraPositionAction *CameraPositionActionRegistry::getCurrentBest()
{
        CameraPositionAction *currentBest = 0;
        if (!actions_.empty())
        {
                std::set<CameraPositionAction *>::iterator itor;
                for (itor = actions_.begin();
                        itor != actions_.end();
                        itor++)
                {
                        CameraPositionAction *action = (*itor);
                        
                        // Check that this action is near the beginning
                        fixed currentTime = action->getScorchedContext()->
                                getActionController().getActionTime();
                        fixed actionTime = action->getStartTime();
                        if (currentTime - actionTime < 1)
                        {
                                // Is there an action to beat
                                if (!currentBest) currentBest = action;
                                else
                                {
                                        // Yes, so check if it beats it
                                        if (currentBest->getShowPriority() < action->getShowPriority())
                                        {
                                                // There is a new current best
                                                currentBest = action;
                                        }
                                }
                        }
                }
        }
        return currentBest;
}

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