PlacementTypeBounds.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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.
//
//    Scorched3D 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 Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <placement/PlacementTypeBounds.h>
#include <landscapemap/LandscapeMaps.h>
#include <engine/ScorchedContext.h>
#include <common/ProgressCounter.h>
#include <common/RandomGenerator.h>
#include <common/Defines.h>
#include <XML/XMLParser.h>

PlacementTypeBounds::PlacementTypeBounds()
{
}

PlacementTypeBounds::~PlacementTypeBounds()
{
}

bool PlacementTypeBounds::readXML(XMLNode *node)
{
        if (!node->getNamedChild("count", count)) return false;
        if (!node->getNamedChild("minbounds", minbounds)) return false;
        if (!node->getNamedChild("maxbounds", maxbounds)) return false;

        if (maxbounds[0] - minbounds[0] < 25 ||
                maxbounds[1] - minbounds[1] < 25 ||
                maxbounds[2] - minbounds[2] < 10)
        {
                return node->returnError(
                        "PlacementTypeBounds bounding box is too small, it must be at least 25x10 units");
        }

        return PlacementType::readXML(node);
}

void PlacementTypeBounds::getPositions(ScorchedContext &context,
        RandomGenerator &generator,
        std::list<Position> &returnPositions,
        ProgressCounter *counter)
{
        for (int i=0; i<count; i++)
        {
                // Set the position, and make sure it is above ground
                Position position;
                do
                {
                        position.position[0] = 
                                generator.getRandFixed() * (maxbounds[0] - minbounds[0]) + minbounds[0];
                        position.position[1] = 
                                generator.getRandFixed() * (maxbounds[1] - minbounds[1]) + minbounds[1];
                        position.position[2] = 
                                generator.getRandFixed() * (maxbounds[2] - minbounds[2]) + minbounds[2];
                } 
                while (context.getLandscapeMaps().getGroundMaps().
                        getInterpHeight(position.position[0], position.position[1]) >= position.position[2]);

                // Set velocity pointing into the middle
                FixedVector middle = (maxbounds + minbounds) / 2;
                position.velocity = middle - position.position;
                position.velocity.StoreNormalize();
                position.velocity[2] = 0;

                returnPositions.push_back(position);
        }
}

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