SCA_IActuator.cpp

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "SCA_IActuator.h"
#include <stdio.h>

using namespace std;

SCA_IActuator::SCA_IActuator(SCA_IObject* gameobj, KX_ACTUATOR_TYPE type) :
    SCA_ILogicBrick(gameobj),
    m_type(type),
    m_links(0),
    m_posevent(false),
    m_negevent(false)
{
    // nothing to do
}

bool SCA_IActuator::Update(double curtime, bool frame)
{
    if (frame)
        return Update();
    
    return true;
}

bool SCA_IActuator::Update()
{
    assert(false && "Actuators should override an Update method.");
    return false;
}

void SCA_IActuator::Activate(SG_DList& head)
{
    if (QEmpty())
    {
        InsertActiveQList(m_gameobj->m_activeActuators);
        head.AddBack(&m_gameobj->m_activeActuators);
    }
}

// this function is only used to deactivate actuators outside the logic loop
// e.g. when an object is deleted.
void SCA_IActuator::Deactivate()
{
    if (QDelink())
    {
        // the actuator was in the active list
        if (m_gameobj->m_activeActuators.QEmpty())
            // the owner object has no more active actuators, remove it from the global list
            m_gameobj->m_activeActuators.Delink();
    }
}


void SCA_IActuator::ProcessReplica()
{
    SCA_ILogicBrick::ProcessReplica();
    RemoveAllEvents();
    m_linkedcontrollers.clear();
}



SCA_IActuator::~SCA_IActuator()
{
    RemoveAllEvents();
}

void SCA_IActuator::DecLink()
{
    m_links--;
    if (m_links < 0) 
    {
        printf("Warning: actuator %s has negative m_links: %d\n", m_name.Ptr(), m_links);
        m_links = 0;
    }
}

void SCA_IActuator::LinkToController(SCA_IController* controller)
{
    m_linkedcontrollers.push_back(controller);
}

void SCA_IActuator::UnlinkController(SCA_IController* controller)
{
    std::vector<class SCA_IController*>::iterator contit;
    for (contit = m_linkedcontrollers.begin();!(contit==m_linkedcontrollers.end());++contit)
    {
        if ((*contit) == controller)
        {
            *contit = m_linkedcontrollers.back();
            m_linkedcontrollers.pop_back();
            return;
        }
    }
    printf("Missing link from actuator %s:%s to controller %s:%s\n", 
        m_gameobj->GetName().ReadPtr(), GetName().ReadPtr(), 
        controller->GetParent()->GetName().ReadPtr(), controller->GetName().ReadPtr());
}

void SCA_IActuator::UnlinkAllControllers()
{
    std::vector<class SCA_IController*>::iterator contit;
    for (contit = m_linkedcontrollers.begin();!(contit==m_linkedcontrollers.end());++contit)
    {
        (*contit)->UnlinkActuator(this);
    }
    m_linkedcontrollers.clear();
}