ODEProjectile.cpp

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#include "ODEProjectile.h"
#include "MercuryLog.h"

REGISTER_ODE_OBJECT_CLASS( Projectile )

Projectile::~Projectile()
{
    Disable();
}

void Projectile::Init()
{
    MercuryODEObject::Init();

    m_pRay = 0;
    m_pToNotify = 0;

//  m_shpTracer.SetProjectionType( PERSPECTIVE );
    m_shpTracer.SetName("Tracer");
    m_shpTracer.Init();
    m_shpTracer.MakeBox();
    m_shpTracer.SetDiffuse( MercuryColor( 1,1,1,0.5 ) );
//  m_shpTracer.SetProjectionType( PERSPECTIVE );
    m_shpTracer.LoadImage( "GRAPHIC:MoltenMetal.bmp" );
    m_shpTracer.SetScale( MercuryPoint( .3f,.3f,500 ) );
    m_shpTracer.SetHide( true );
    AddObject( &m_shpTracer );
}

void Projectile::Update( const float dTime )
{
    MercuryODEObject::Update( dTime );
}

bool Projectile::Collide( MercuryODEObject * pHit, dContact & pContact, MercuryODEWorld * pWorld )
{
    if( m_pToNotify )
    {
        PStack pRet;
        PStack pArgs;
        pArgs.PushItemBack( PSElement( MString( pHit->GetName() ) ) );
        pArgs.PushItemBack( PSElement( (void*)pHit ) );
        pArgs.PushItemBack( PSElement( pContact.geom.pos[0] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.pos[1] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.pos[2] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.normal[0] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.normal[1] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.normal[2] ) );
        m_pToNotify->Command( pRet, m_sMessage.c_str(), pArgs );
    }

    return false;
}

void Projectile::Message( int Message, PStack & data, const MString & name )
{
    MercuryODEObject::Message( Message, data, name );
}

void Projectile::EnableForShot( dSpaceID sID, float fLength, const MercuryPoint & pCenter, const MercuryPoint & pDirection )
{

    //This code isn't exactly right yet.  I will work on it later though

    m_pRay = dCreateRay( sID, fLength );
    dGeomSetPosition( m_pRay, pCenter.x, pCenter.y, pCenter.z );
    dGeomSetData( m_pRay, this );

    MQuaternion Q;
    MercuryPoint pFlatOrient = pDirection;
    pFlatOrient.z = 0;
    pFlatOrient.Normalize();
    MercuryPoint pAxis = MercuryPoint( 0,0,1 ).CrossProduct( pFlatOrient );
    if( pAxis.Magnitude() < 0.00001f )
        pAxis = MercuryPoint( 1,0,0 );
    pAxis.NormalizeSelf();

    Q.CreateFromAxisAngle(pAxis, Q_PI/2 - ATAN2( pDirection.z,SQRT(1-pDirection.z*pDirection.z)));
    Q.normalize();
    dGeomSetQuaternion( m_pRay, &Q.w );

    m_shpTracer.SetPosition( pCenter );
    m_shpTracer.SetRotationMode( RM_MATRIX );
    MercuryMatrix M;
    Q.toMatrix4( M );
    M.Translate(0,0,250);
    m_shpTracer.Tweening.AddCommand( "SetHide,0;diffuse,1,1,1,.7;linear,0.25;diffuse,1,1,1,.2;sleep,0;SetHide,1;" );
    m_shpTracer.SetAfterMatrix( M.Ptr() );
}

void Projectile::Disable()
{
    if( m_pRay )
        dGeomDestroy( m_pRay );
    m_pRay = 0;
}


void VirtualProjectile::Init()
{
    MercuryODEObject::Init();

    m_pRay = 0;
    m_pToNotify = 0;
}

void VirtualProjectile::Disable()
{
    if( m_pRay )
        dGeomDestroy( m_pRay );
    m_pRay = 0;
}

void VirtualProjectile::EnableForShot( dSpaceID sID, float fLength, const MercuryPoint & pCenter, const MercuryPoint & pDirection )
{

    //This code isn't exactly right yet.  I will work on it later though

    m_pRay = dCreateRay( sID, fLength );
    dGeomSetPosition( m_pRay, pCenter.x, pCenter.y, pCenter.z );
    dGeomSetData( m_pRay, this );

    MQuaternion Q;
    MercuryPoint pFlatOrient = pDirection;
    pFlatOrient.z = 0;
    pFlatOrient.Normalize();
    MercuryPoint pAxis = MercuryPoint( 0,0,1 ).CrossProduct( pFlatOrient );
    if( pAxis.Magnitude() < 0.00001f )
        pAxis = MercuryPoint( 1,0,0 );
    pAxis.NormalizeSelf();

    Q.CreateFromAxisAngle(pAxis, Q_PI/2 - ATAN2( pDirection.z,SQRT(1-pDirection.z*pDirection.z)));
    Q.normalize();
    dGeomSetQuaternion( m_pRay, &Q.w );
}

bool VirtualProjectile::Collide( MercuryODEObject * pHit, dContact & pContact, MercuryODEWorld * pWorld )
{
    if( m_pToNotify )
    {
        PStack pRet;
        PStack pArgs;
        pArgs.PushItemBack( PSElement( MString( pHit->GetName() ) ) );
        pArgs.PushItemBack( PSElement( (void*)pHit ) );
        pArgs.PushItemBack( PSElement( pContact.geom.pos[0] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.pos[1] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.pos[2] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.normal[0] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.normal[1] ) );
        pArgs.PushItemBack( PSElement( pContact.geom.normal[2] ) );
        m_pToNotify->Command( pRet, m_sMessage.c_str(), pArgs );
    }

    return false;
}

/* 
 * Copyright (c) 2006, Charles Lohr
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *  -   Redistributions of source code must retain the above
 *      copyright notice, this list of conditions and the following disclaimer.
 *  -   Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the distribution.
 *  -   Neither the name of the Mercury Engine nor the names of its
 *      contributors may be used to endorse or promote products derived from
 *      this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

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