RoofMaps.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 <landscapemap/RoofMaps.h>
#include <landscapemap/HeightMapLoader.h>
#include <common/ProgressCounter.h>
#include <engine/ScorchedContext.h>
#include <landscapedef/LandscapeDefinitionCache.h>
#include <landscapedef/LandscapeDefn.h>

RoofMaps::RoofMaps(LandscapeDefinitionCache &defnCache) :
        defnCache_(defnCache)
{
}

RoofMaps::~RoofMaps()
{
}

void RoofMaps::generateMaps(
        ScorchedContext &context,
        ProgressCounter *counter)
{
        generateRMap(context, counter);
}

fixed RoofMaps::getRoofHeight(int x, int y)
{
        if (defnCache_.getDefn()->roof->getType() != LandscapeDefnType::eRoofCavern)
        {
                return fixed::MAX_FIXED;
        }

        // Factors should be caclculated from hmap height/width
        int const xFactor = defnCache_.getDefn()->getLandscapeWidth() / rmap_.getMapWidth();
        int const yFactor = defnCache_.getDefn()->getLandscapeHeight() / rmap_.getMapHeight();

        x /= xFactor;
        y /= yFactor;
        if (x < 0 || y < 0)
        {
                return rmap_.getHeight(0, 0);
        }
        else if (x > rmap_.getMapWidth() || y > rmap_.getMapHeight())
        {
                return rmap_.getHeight(
                        rmap_.getMapWidth(), rmap_.getMapHeight());
        }

        return rmap_.getHeight(x, y);
}

fixed RoofMaps::getInterpRoofHeight(fixed x, fixed y)
{
        if (defnCache_.getDefn()->roof->getType() != LandscapeDefnType::eRoofCavern)
        {
                return fixed::MAX_FIXED;
        }

        // Factors should be caclculated from hmap height/width
        int const xFactor = defnCache_.getDefn()->getLandscapeWidth() / rmap_.getMapWidth();
        int const yFactor = defnCache_.getDefn()->getLandscapeHeight() / rmap_.getMapHeight();

        x /= xFactor;
        y /= yFactor;
        if (x < 0 || y < 0 || x > rmap_.getMapWidth() || y > rmap_.getMapHeight())
        {
                return fixed::MAX_FIXED;
        }
        return rmap_.getInterpHeight(x, y);
}

void RoofMaps::generateRMap(
        ScorchedContext &context,
        ProgressCounter *counter)
{
        // calculate roof size and set it
        int mapWidth = defnCache_.getDefn()->getLandscapeWidth() / 4;
        int mapHeight = defnCache_.getDefn()->getLandscapeHeight() / 4;
        rmap_.create(mapWidth, mapHeight);

        // Generate the roof
        if (defnCache_.getDefn()->roof->getType() == LandscapeDefnType::eRoofCavern)
        {
                LandscapeDefnRoofCavern *cavern = 
                        (LandscapeDefnRoofCavern *) defnCache_.getDefn()->roof;

                bool smooth = false;
                if (!HeightMapLoader::generateTerrain(
                        defnCache_.getSeed() + 1,
                        cavern->heightmap,
                        rmap_,
                        smooth,
                        counter))
                {
                        S3D::dialogExit("Landscape", "Failed to generate roof");
                }
                
                for (int j=0; j<=rmap_.getMapHeight(); j++)
                {
                        for (int i=0; i<=rmap_.getMapWidth(); i++)
                        {
                                fixed height = rmap_.getHeight(i, j);
                                height = fixed(cavern->height) - height;
                                rmap_.setHeight(i, j, height);
                                rmap_.getNormal(i, j)[2] = -rmap_.getNormal(i, j)[2];
                        }
                }
        }
}

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