world.cpp

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/*
    Sheep - A Rigid Body Dynamics Engine
    Copyright (C) 2001-2004 Francois Beaune
    Contact: http://toxicengine.sourceforge.net/

    This file is part of Sheep.

    Sheep 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.

    Sheep 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 Sheep; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "subspace.h"
#include "world.h"

#include <cassert>

using namespace sheep;

void World::Insert(Subspace *subspace) {
    assert(subspace);

    subspace->AttachTo(this);

    m_subspaces.push_back(subspace);
}

void World::Remove(Subspace *subspace) {
    assert(subspace);

    m_subspaces.remove(subspace);
}

void World::StepBy(Real step) {
    const Real EPSILON = 1e-6;

    //!\todo Is this really necessary? (see Subspace::StepBy)
    assert(step > EPSILON);

    Real step_end = m_time + step;

    for(subspace_list::iterator i = m_subspaces.begin(); i != m_subspaces.end(); i++) {
        Subspace *subspace = *i;

        subspace->Step(m_time, step_end);
    }

    m_time = step_end;
}

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