KX_NetworkMessageSensor.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 *****
 * Ketsji Logic Extenstion: Network Message Sensor generic implementation
 */

#include <stddef.h>

#include "KX_NetworkMessageSensor.h"
#include "KX_NetworkEventManager.h"
#include "NG_NetworkMessage.h"
#include "NG_NetworkScene.h"
#include "NG_NetworkObject.h"
#include "SCA_IObject.h"    
#include "InputParser.h"
#include "ListValue.h"
#include "StringValue.h"

#ifdef NAN_NET_DEBUG
  #include <iostream>
#endif

KX_NetworkMessageSensor::KX_NetworkMessageSensor(
        class KX_NetworkEventManager* eventmgr, // our eventmanager
        class NG_NetworkScene *NetworkScene,    // our scene
        SCA_IObject* gameobj,                   // the sensor controlling object
        const STR_String &subject
        ) :
    SCA_ISensor(gameobj,eventmgr),
    m_NetworkScene(NetworkScene),
    m_subject(subject),
    m_frame_message_count (0),
    m_BodyList(NULL),
    m_SubjectList(NULL)
{
    Init();
}

void KX_NetworkMessageSensor::Init()
{
    m_IsUp = false;
}

KX_NetworkMessageSensor::~KX_NetworkMessageSensor()
{
}

CValue* KX_NetworkMessageSensor::GetReplica() {
    // This is the standard sensor implementation of GetReplica
    // There may be more network message sensor specific stuff to do here.
    CValue* replica = new KX_NetworkMessageSensor(*this);

    if (replica == NULL) return NULL;
    replica->ProcessReplica();

    return replica;
}

// Return true only for flank (UP and DOWN)
bool KX_NetworkMessageSensor::Evaluate()
{
    bool result = false;
    bool WasUp = m_IsUp;

    m_IsUp = false;

    if (m_BodyList) {
        m_BodyList->Release();
        m_BodyList = NULL;
    }

    if (m_SubjectList) {
        m_SubjectList->Release();
        m_SubjectList = NULL;
    }

    STR_String& toname=GetParent()->GetName();
    STR_String& subject = this->m_subject;

    vector<NG_NetworkMessage*> messages =
        m_NetworkScene->FindMessages(toname,"",subject,true);

    m_frame_message_count = messages.size();

    if (!messages.empty()) {
#ifdef NAN_NET_DEBUG
        printf("KX_NetworkMessageSensor found one or more messages\n");
#endif
        m_IsUp = true;
        m_BodyList = new CListValue();
        m_SubjectList = new CListValue();
    }

    vector<NG_NetworkMessage*>::iterator mesit;
    for (mesit=messages.begin();mesit!=messages.end();mesit++)
    {
        // save the body
        const STR_String& body = (*mesit)->GetMessageText();
        // save the subject
        const STR_String& messub = (*mesit)->GetSubject();
#ifdef NAN_NET_DEBUG
        if (body) {
            cout << "body [" << body << "]\n";
        }
#endif
        m_BodyList->Add(new CStringValue(body,"body"));
        // Store Subject
        m_SubjectList->Add(new CStringValue(messub,"subject"));

        // free the message
        (*mesit)->Release();
    }
    messages.clear();

    result = (WasUp != m_IsUp);

    // Return always true if a message was received otherwise we can loose messages
    if (m_IsUp)
        return true;
    // Is it useful to return also true when the first frame without a message??
    // This will cause a fast on/off cycle that seems useless!
    return result;
}

// return true for being up (no flank needed)
bool KX_NetworkMessageSensor::IsPositiveTrigger()
{
//  printf("KX_NetworkMessageSensor IsPositiveTrigger\n");
    //attempt to fix [ #3809 ] IPO Actuator does not work with some Sensors
    //a better solution is to properly introduce separate Edge and Level triggering concept

    return m_IsUp;
}

#ifdef WITH_PYTHON

/* --------------------------------------------------------------------- */
/* Python interface ---------------------------------------------------- */
/* --------------------------------------------------------------------- */

/* Integration hooks --------------------------------------------------- */
PyTypeObject KX_NetworkMessageSensor::Type = {
    PyVarObject_HEAD_INIT(NULL, 0)
    "KX_NetworkMessageSensor",
    sizeof(PyObjectPlus_Proxy),
    0,
    py_base_dealloc,
    0,
    0,
    0,
    0,
    py_base_repr,
    0,0,0,0,0,0,0,0,0,
    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
    0,0,0,0,0,0,0,
    Methods,
    0,
    0,
    &SCA_ISensor::Type,
    0,0,0,0,0,0,
    py_base_new
};

PyMethodDef KX_NetworkMessageSensor::Methods[] = {
    {NULL,NULL} //Sentinel
};

PyAttributeDef KX_NetworkMessageSensor::Attributes[] = {
    KX_PYATTRIBUTE_STRING_RW("subject", 0, 100, false, KX_NetworkMessageSensor, m_subject),
    KX_PYATTRIBUTE_INT_RO("frameMessageCount", KX_NetworkMessageSensor, m_frame_message_count),
    KX_PYATTRIBUTE_RO_FUNCTION("bodies", KX_NetworkMessageSensor, pyattr_get_bodies),
    KX_PYATTRIBUTE_RO_FUNCTION("subjects", KX_NetworkMessageSensor, pyattr_get_subjects),
    { NULL }    //Sentinel
};

PyObject* KX_NetworkMessageSensor::pyattr_get_bodies(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
    KX_NetworkMessageSensor *self = static_cast<KX_NetworkMessageSensor*>(self_v);
    if (self->m_BodyList) {
        return self->m_BodyList->GetProxy();
    } else {
        return (new CListValue())->NewProxy(true);
    }
}

PyObject* KX_NetworkMessageSensor::pyattr_get_subjects(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
    KX_NetworkMessageSensor *self = static_cast<KX_NetworkMessageSensor*>(self_v);
    if (self->m_SubjectList) {
        return self->m_SubjectList->GetProxy();
    } else {
        return (new CListValue())->NewProxy(true);
    }
}

#endif // WITH_PYTHON