TextureStore.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 <graph/TextureStore.h>
#include <graph/OptionsDisplay.h>
#include <image/ImageFactory.h>
#include <GLEXT/GLTexture.h>
#include <common/Defines.h>

TextureStore *TextureStore::instance_ = 0;

TextureStore *TextureStore::instance()
{
        if (!instance_)
        {
                instance_ = new TextureStore;
        }
        return instance_;
}

TextureStore::TextureStore()
{
}

TextureStore::~TextureStore()
{
}

GLTexture *TextureStore::loadTexture(const std::string &name, 
                                                                         const std::string &aname, 
                                                                         bool invert)
{
        std::string wholeName;
        wholeName += name;
        wholeName += "::";
        wholeName += aname;

        // Try to find the texture in the cache first
        std::map<std::string, GLTexture *>::iterator itor =
                skins_.find(wholeName);
        if (itor != skins_.end())
        {
                return (*itor).second;
        }

        // Load tank skin as bitmap
        Image *map = 0;
        if (aname[0])
        {
                map = ImageFactory::loadImage(name, aname, invert);
                if (!map->getBits())
                {
                        S3D::dialogMessage("Scorched3D load texture", S3D::formatStringBuffer(
                                                  "Failed to load texture file \"%s\",\n"
                                                  "alpha file \"%s\"",
                                                  name.c_str(),
                                                  aname.c_str()));
                        return 0;
                }
        }
        else
        {
                map = ImageFactory::loadImage(name);
                if (!map->getBits())
                {
                        S3D::dialogMessage("Scorched3D load texture", S3D::formatStringBuffer(
                                                  "Failed to load texture file \"%s\"",
                                                  name.c_str()));
                        return 0;
                }
        }

        // HACK for skin creator
#ifdef dDOUBLE
        // Use smaller tank skins for texture size 0
        // Resize the bitmap
        if (OptionsDisplay::instance()->getTexSize() == 0)
        {
                map->resize(map->getWidth() / 2, 
                                   map->getHeight() / 2);
        }
#endif

        // Create skin texture from bitmap
        GLTexture *texture = new GLTexture;
        if (!texture->create(*map))
        {
                delete map;
                S3D::dialogMessage("Scorched3D create texture", S3D::formatStringBuffer(
                                          "Failed to create texture \"%s\"",
                                          name.c_str()));
                return 0;
        }
        delete map;

        skins_[wholeName] = texture;
        return texture;
}

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