OMKTriggerExtension.cpp

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/************************************************************************/
/* This file is part of openMask(c) INRIA, CNRS, Universite de Rennes 1 */
/* 1993-2002, thereinafter the Software                                 */
/*                                                                      */
/* The Software has been developped within the Siames Project.          */
/* INRIA, the University of Rennes 1 and CNRS jointly hold intellectual */
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/* The Software has been registered with the Agence pour la Protection  */
/* des Programmes (APP) under registration number                       */
/* IDDN.FR.001.510008.00.S.P.2001.000.41200                             */
/*                                                                      */
/* This file may be distributed under the terms of the Q Public License */
/* version 1.0 as defined by Trolltech AS of Norway and appearing in    */
/* the file LICENSE.QPL included in the packaging of this file.         */
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/* Licensees holding valid specific licenses issued by INRIA, CNRS or   */
/* Universite Rennes 1 for the software may use this file in            */
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/************************************************************************/
#include "OMKTriggerExtension.h"
#include "OMKParametersAccessor.inl"
#include "OMKAttribute.inl"

using namespace OMK ;
using namespace OMK::Type ;

//=============================================================================
REGISTER_EXTENSION_FACTORY( DistanceToExtension, "DistanceTo" ) ;
//-------------------------------------------------------------------------
DistanceToExtension::DistanceToExtension( OMK::ExtensibleSimulatedObject* owner, const Name& id, bool registerExtension ) 
: ExtensionT< ExtensibleSimulatedObject >( owner, id, registerExtension ),
  _target( 0 ),
  _distance( Name( id.getString() + "Distance" ), 0.0f ),
  _positionAccessor( 0 ),
  _deleteTarget( false )
{
  const ConfigurationParameterDescriptor* node = 0 ;
  ParametersAccessor::get( owner->getObjectDescriptor().getExtensionsParameters(), id.getString(), node ) ;
  // First, try to find the attribute id in the configuration
  Name targetId ;
  if( ParametersAccessor::get( node, "TargetId", targetId ) )
  {
    _target = _owner->getBaseAttribute< Transform >( targetId ) ;
    OMASSERTM( _target, "Cannot find the target attribute \"" << targetId << "\", maybe not yet available" ) ;
  }
  // Second, try to find the attribute with the id "Target"
  if( !_target )
  {
    _target = _owner->getBaseAttribute< Transform >( "Target" ) ;
  }
  // Third, create the attribute with the id "Target"
  if( !_target )
  {
    _target = new AttributeT< Transform >( Name( id.getString() + "Target" ), Transform() ),
    owner->addAttribute( *_target ) ;
    _deleteTarget = true ;
  }
  owner->addAttribute( _distance ) ;
}
//-------------------------------------------------------------------------
DistanceToExtension::~DistanceToExtension()
{
  if( _deleteTarget ) delete _target ;
}
//-------------------------------------------------------------------------
bool DistanceToExtension::loadExtensionParameters( const ConfigurationParameterDescriptor * node ) 
{
  // Retrieve all the parameters
  Name attributeName( "Position" ) ;
  ParametersAccessor::get( node, "PositionId", attributeName ) ;
  _positionAccessor = _owner->getBaseAttribute< OMK::Type::Transform >( attributeName ) ;
  if( _deleteTarget )
  {
    _target->loadParameters( node, "Target" ) ;
  }
  _distance.loadParameters( node, "Distance" ) ;

  return _positionAccessor != 0 ;
}
//-------------------------------------------------------------------------
void DistanceToExtension::preComputeParameters()
{
  Wm4::Vector3f target( _target->get().getTranslate() ) ;  
  Wm4::Vector3f pos( _positionAccessor->get().getTranslate() ) ;  
  float deltaX = target.X() - pos.X() ;
  float deltaY = target.Y() - pos.Y() ;
  float deltaZ = target.Z() - pos.Z() ;
  _distance.set( sqrt( deltaX * deltaX + deltaY * deltaY + deltaZ * deltaZ ) ) ;
}
//=============================================================================


//=============================================================================
TriggerBaseExtension::TriggerBaseExtension( OMK::ExtensibleSimulatedObject* owner, const Name& id, bool registerExtension ) 
: DistanceToExtension( owner, id, registerExtension ),
  _threshold( Name( id.getString() + "Threshold" ), 1.0f ),
  _flagAccessor( 0 )
{
  owner->addAttribute( _threshold ) ;
}
//-------------------------------------------------------------------------
TriggerBaseExtension::~TriggerBaseExtension()
{
}
//-------------------------------------------------------------------------
bool TriggerBaseExtension::loadExtensionParameters( const ConfigurationParameterDescriptor * node ) 
{
  _threshold.loadParameters( node, "Threshold" ) ;

  return DistanceToExtension::loadExtensionParameters( node );
}
//-------------------------------------------------------------------------
void TriggerBaseExtension::preComputeParameters()
{
  OMASSERTM( _flagAccessor, "Must be valid !" ) ;
  DistanceToExtension::preComputeParameters() ;
  bool trigger = _distance.get() <= _threshold.get() ;
  _flagAccessor->set( trigger ) ;
}
//=============================================================================


//=============================================================================
REGISTER_EXTENSION_FACTORY( TriggerAttributeExtension, "TriggerAttribute" ) ;
//-------------------------------------------------------------------------
TriggerAttributeExtension::TriggerAttributeExtension( OMK::ExtensibleSimulatedObject* owner, const Name& id, bool registerExtension ) 
: TriggerBaseExtension( owner, id, registerExtension )
{
}
//-------------------------------------------------------------------------
TriggerAttributeExtension::~TriggerAttributeExtension()
{
}
//-------------------------------------------------------------------------
bool TriggerAttributeExtension::loadExtensionParameters( const ConfigurationParameterDescriptor * node ) 
{
  Name attributeName( "Activation" ) ;
  ParametersAccessor::get( node, "AttributeId", attributeName ) ;
  _flagAccessor = _owner->getBaseAttribute< bool >( attributeName ) ;

  return _flagAccessor && TriggerBaseExtension::loadExtensionParameters( node );
}
//=============================================================================


//=============================================================================
REGISTER_EXTENSION_FACTORY( TriggerExtension, "Trigger" ) ;
//-------------------------------------------------------------------------
TriggerExtension::TriggerExtension( OMK::ExtensibleSimulatedObject* owner, const Name& id, bool registerExtension ) 
: TriggerBaseExtension( owner, id, registerExtension ),
  _reached( Name( id.getString() + "Reached" ), false )
{
  owner->addAttribute( _reached ) ;
}
//-------------------------------------------------------------------------
TriggerExtension::~TriggerExtension()
{
}
//-------------------------------------------------------------------------
bool TriggerExtension::loadExtensionParameters( const ConfigurationParameterDescriptor * node ) 
{
  _flagAccessor = &_reached ;
  _reached.loadParameters( node, "Reached" ) ;

  return TriggerBaseExtension::loadExtensionParameters( node );
}
//=============================================================================

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