std::string TileCache::cacheFileName(const TileDesc& tile)
{
std::ostringstream oss;
oss << tile.getPart() << '_' << tile.getWidth() << 'x' << tile.getHeight() << '.'
<< tile.getTilePosX() << ',' << tile.getTilePosY() << '.'
<< tile.getTileWidth() << 'x' << tile.getTileHeight() << ".png";
return oss.str();
}
std::unique_ptr<std::fstream> TileCache::lookupTile(const TileDesc& tile)
{
const std::string fileName = _cacheDir + "/" + cacheFileName(tile);
std::unique_ptr<std::fstream> result(new std::fstream(fileName, std::ios::in));
UnitWSD::get().lookupTile(tile.getPart(), tile.getWidth(), tile.getHeight(),
tile.getTilePosX(), tile.getTilePosY(),
tile.getTileWidth(), tile.getTileHeight(), result);
if (result && result->is_open())
{
Log::trace("Found cache tile: " + fileName);
return result;
}
return nullptr;
}