/*
    Crystal Space Entity Layer
    Copyright (C) 2001 by Jorrit Tyberghein

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "cssysdef.h"
#include <math.h>
#include <csgeom/transfrm.h>
#include "propclass/mesh.h"
#include "propclass/solid.h"
#include "propclass/zone.h"
#include "plugins/propclass/newcamera/thirdpersoncameramode.h"
#include "propclass/newcamera.h"

celThirdPersonCameraMode::celThirdPersonCameraMode()
	: celCameraMode()
{
	posOffset.Set(0,0.5,4);
}

celThirdPersonCameraMode::~celThirdPersonCameraMode()
{
}

void celThirdPersonCameraMode::SetPositionOffset(const csVector3 & offset)
{
  posOffset = offset;
}

bool celThirdPersonCameraMode::UseSpringPos() const
{
  return true;
}

bool celThirdPersonCameraMode::UseSpringDir() const
{
  return true;
}

bool celThirdPersonCameraMode::UseSpringUp() const
{
  return true;
}

bool celThirdPersonCameraMode::DrawAttachedMesh() const
{
  return true;
}

bool celThirdPersonCameraMode::DecideCameraState()
{
  if (!parentCamera)
    return false;

  pos = parentCamera->GetBasePos() + parentCamera->GetBaseTrans().This2OtherRelative(posOffset);
  dir = parentCamera->GetBasePos() - parentCamera->GetPos();
  up  = parentCamera->GetBaseUp();
  return true;
}
