oasisphysical.cpp

使用stl技术,(还没看,是听说的)

/******************************************************************************
 * This source file is part of Bad Camel Gaming
 * Copyright (C) 2003  Zephie Greyvenstein
 * See Readme.html for acknowledgements
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *****************************************************************************/

/******************************************************************************
 * FILENAME    : oasisPhysical.cpp
 * DESCRIPTION : A physical object
 * AUTHOR      : Zephie Greyvenstein
 *****************************************************************************/

#include "oasisPhysical.h"
#include "oasisPhysicsSystem.h"
#include "oasisException.h"

namespace Oasis {
  
  physical::physical( ) { 
    drivingPhysics = NULL;
    removeAllCollisionListeners( );
  }
  
  physical::~physical( ) {
    removeAndDestroyPhysics( );
    removeAllCollisionListeners( );
  }

  void physical::setPosition( const vector3 &newPosition ) {
    position = newPosition;

    if ( drivingPhysics ) {
      drivingPhysics->setPosition( position );
    }
    
    _updatePosition( );
  }

  void physical::setOrientation( const quaternion &newOrientation ) {
    orientation = newOrientation;

    if ( drivingPhysics ) {
      drivingPhysics->setOrientation( orientation );
    }
    
    _updateOrientation( );
  }

  void physical::enablePhysics( bool usePhysics ) {
    drivingPhysics->setDynamicsEnabled( usePhysics );
    drivingPhysics->setCollisionEnabled( usePhysics );
  }

  void physical::setPhysics( physics *physicsToUse ) {
    if ( !physicsToUse ) {
      oasisError( exception::ET_NULL_POINTER,
      "Physics was null",
      "physical::setPhysics" );
    }

    removeAndDestroyPhysics( );
    
    drivingPhysics = physicsToUse;
    // Backward data
    drivingPhysics->setPhysical( this );
  }

  physics *physical::setPhysics( const string &templateName ) {
    // If there is no physics system, error. Perhaps we could start it?
    if ( !physicsSystem::getPtr( ) ) {
      oasisError( exception::ET_INTERNAL_ERROR,
      "To create physics, start the physics system",
      "physical::setPhysics" );
    }
    
    physics *object = physicsSystem::get( ).
      createPhysics( physicsSystem::get( ).getNextUniqueName( ), 
         templateName );
    setPhysics( object );
    return object;
  }

  physics *physical::getPhysics( void ) const {
    return drivingPhysics;
  }

  void physical::removePhysics( void ) {
    if ( drivingPhysics ) {
      drivingPhysics->setPhysical( NULL );
      drivingPhysics = NULL;
    }
  }

  void physical::removeAndDestroyPhysics( void ) {
    if ( drivingPhysics ) {
      physicsSystem::get( ).removePhysics( drivingPhysics );
      drivingPhysics = NULL;
    }
  }

  void physical::addCollisionListener( collisionListener *listener ) {
    listeners.insert( listener );
  }

  void physical::removeCollisionListener( collisionListener *listener ) {
    listeners.erase( listener );
  }

  void physical::removeAllCollisionListeners( void ) {
    listeners.clear( );
  }

  void physical::updatePhysics( const vector3 &newPosition,
        const quaternion &newOrientation ) {
    position = newPosition;
    orientation = newOrientation;

    _updatePosition( );
    _updateOrientation( );
  }
  
  void physical::notifyCollision( collisionListener::CollisionInfo &info ) {
    // Notify all collision listeners of the collision
    for ( collisionListenerSet::iterator it = listeners.begin( );
    it != listeners.end( ); ++it ) {
      ( *it )->collided( this, info );
    }
  }
}