void World::loadPakList(std::string&& fname, std::vector<PakArray> &paklist)
{
VFS::IStreamPtr stream = VFS::Manager::get().open(fname.c_str());
if(!stream) throw std::runtime_error("Failed to open "+fname);
size_t rownum = 0;
std::map<size_t,size_t> offsets_rows;
offsets_rows[VFS::read_le32(*stream)] = rownum++;
while((size_t)stream->tellg() < offsets_rows.begin()->first)
offsets_rows[VFS::read_le32(*stream)] = rownum++;
auto iter = offsets_rows.begin();
while(iter != offsets_rows.end())
{
auto next = std::next(iter);
PakArray pak;
while((next != offsets_rows.end() && (size_t)stream->tellg() < next->first) ||
(next == offsets_rows.end() && stream->peek() != std::istream::traits_type::eof()))
{
uint16_t count = VFS::read_le16(*stream);
uint8_t val = stream->get();
pak.push_back(std::make_pair(count, val));
}
if(iter->second >= paklist.size())
paklist.resize(iter->second+1);
paklist[iter->second] = std::move(pak);
iter = next;
}
}
void TextureManager::initialize()
{
VFS::IStreamPtr stream = VFS::Manager::get().open("PAL.PAL");
std::streamsize len = 0;
if(stream && stream->seekg(0, std::ios_base::end))
{
len = stream->tellg();
stream->seekg(0);
}
if(len == 776)
{
len -= 8;
stream->ignore(8);
}
if(len != sizeof(mCurrentPalette))
throw std::runtime_error("Invalid palette size (expected 768 or 776 bytes)");
stream->read(reinterpret_cast<char*>(mCurrentPalette.data()), sizeof(mCurrentPalette));
}
DFAFile::DFAFile(const std::string &filename, const Palette &palette)
: pixels()
{
VFS::IStreamPtr stream = VFS::Manager::get().open(filename.c_str());
Debug::check(stream != nullptr, "DFAFile", "Could not open \"" + filename + "\".");
stream->seekg(0, std::ios::end);
const auto fileSize = stream->tellg();
stream->seekg(0, std::ios::beg);
std::vector<uint8_t> srcData(fileSize);
stream->read(reinterpret_cast<char*>(srcData.data()), srcData.size());
// Read DFA header data.
const uint16_t imageCount = Bytes::getLE16(srcData.data());
const uint16_t unknown1 = Bytes::getLE16(srcData.data() + 2);
const uint16_t unknown2 = Bytes::getLE16(srcData.data() + 4);
const uint16_t width = Bytes::getLE16(srcData.data() + 6);
const uint16_t height = Bytes::getLE16(srcData.data() + 8);
const uint16_t compressedLength = Bytes::getLE16(srcData.data() + 10); // First frame.
// Frame data with palette indices.
std::vector<std::vector<uint8_t>> frames;
// Uncompress the initial frame.
frames.push_back(std::vector<uint8_t>(width * height));
Compression::decodeRLE(srcData.data() + 12, width * height, frames.at(0));
// Make copies of the original frame for each update chunk.
for (int i = 1; i < imageCount; ++i)
{
frames.push_back(frames.at(0));
}
// Offset to the beginning of the chunk data; advances as the chunk data is read.
uint32_t offset = 12 + compressedLength;
// Start reading chunks for each update group. Skip the first frame because
// that's the full image.
for (uint32_t frameIndex = 1; frameIndex < imageCount; ++frameIndex)
{
// Select the frame buffer at the current frame index.
std::vector<uint8_t> &frame = frames.at(frameIndex);
// Pointer to the beginning of the chunk data. Each update chunk
// changes a group of pixels in a copy of the original image.
const uint8_t *chunkData = srcData.data() + offset;
const uint16_t chunkSize = Bytes::getLE16(chunkData);
const uint16_t chunkCount = Bytes::getLE16(chunkData + 2);
// Move the offset past the chunk header.
offset += 4;
for (uint32_t chunkIndex = 0; chunkIndex < chunkCount; ++chunkIndex)
{
const uint8_t *updateData = srcData.data() + offset;
const uint16_t updateOffset = Bytes::getLE16(updateData);
const uint16_t updateCount = Bytes::getLE16(updateData + 2);
// Move the offset past the update header.
offset += 4;
for (uint32_t i = 0; i < updateCount; ++i)
{
frame.at(updateOffset + i) = *(srcData.begin() + offset);
offset++;
}
}
}
this->width = width;
this->height = height;
// Finally, create 32-bit images using each frame's palette indices.
for (const auto &frame : frames)
{
this->pixels.push_back(std::unique_ptr<uint32_t>(
new uint32_t[this->width * this->height]));
uint32_t *dstPixels = this->pixels.at(this->pixels.size() - 1).get();
std::transform(frame.begin(), frame.begin() + frame.size(), dstPixels,
[&palette](uint8_t col) -> uint32_t
{
return palette[col].toARGB();
});
}
}
void World::initialize(osgViewer::Viewer *viewer, osg::Group *sceneroot)
{
std::set<std::string> names = VFS::Manager::get().list("MAPNAMES.[0-9]*");
if(names.empty()) throw std::runtime_error("Failed to find any regions");
VFS::IStreamPtr stream;
for(const std::string &name : names)
{
size_t pos = name.rfind('.');
if(pos == std::string::npos)
continue;
std::string regstr = name.substr(pos+1);
unsigned long regnum = std::stoul(regstr, nullptr, 10);
/* Get names */
stream = VFS::Manager::get().open(name.c_str());
if(!stream) throw std::runtime_error("Failed to open "+name);
uint32_t mapcount = VFS::read_le32(*stream);
if(mapcount == 0) continue;
MapRegion region;
region.mNames.resize(mapcount);
for(std::string &mapname : region.mNames)
{
char mname[32];
if(!stream->read(mname, sizeof(mname)) || stream->gcount() != sizeof(mname))
throw std::runtime_error("Failed to read map names from "+name);
mapname.assign(mname, sizeof(mname));
size_t end = mapname.find('\0');
if(end != std::string::npos)
mapname.resize(end);
}
stream = nullptr;
/* Get table data */
std::string fname = "MAPTABLE."+regstr;
stream = VFS::Manager::get().open(fname.c_str());
if(!stream) throw std::runtime_error("Failed to open "+fname);
region.mTable.resize(region.mNames.size());
for(MapTable &maptable : region.mTable)
{
maptable.mMapId = VFS::read_le32(*stream);
maptable.mUnknown1 = stream->get();
maptable.mLongitudeType = VFS::read_le32(*stream);
maptable.mLatitude = VFS::read_le16(*stream);
maptable.mUnknown2 = VFS::read_le16(*stream);
maptable.mUnknown3 = VFS::read_le32(*stream);
}
stream = nullptr;
/* Get exterior data */
fname = "MAPPITEM."+regstr;
stream = VFS::Manager::get().open(fname.c_str());
if(!stream) throw std::runtime_error("Failed to open "+fname);
std::vector<uint32_t> extoffsets(region.mNames.size());
for(uint32_t &offset : extoffsets)
offset = VFS::read_le32(*stream);
std::streamoff extbase_offset = stream->tellg();
uint32_t *extoffset = extoffsets.data();
region.mExteriors.resize(extoffsets.size());
for(ExteriorLocation &extinfo : region.mExteriors)
{
stream->seekg(extbase_offset + *extoffset);
extinfo.load(*stream);
++extoffset;
}
stream = nullptr;
/* Get dungeon data */
fname = "MAPDITEM."+regstr;
stream = VFS::Manager::get().open(fname.c_str());
if(!stream) throw std::runtime_error("Failed to open "+fname);
DungeonHeader dheader;
dheader.load(*stream);
std::streamoff dbase_offset = stream->tellg();
DungeonHeader::Offset *doffset = dheader.mOffsets.data();
region.mDungeons.resize(dheader.mDungeonCount);
for(DungeonInterior &dinfo : region.mDungeons)
{
stream->seekg(dbase_offset + doffset->mOffset);
dinfo.load(*stream);
if(dinfo.mExteriorLocationId != doffset->mExteriorLocationId)
throw std::runtime_error("Dungeon exterior location id mismatch for "+std::string(dinfo.mLocationName)+": "+
std::to_string(dinfo.mExteriorLocationId)+" / "+std::to_string(doffset->mExteriorLocationId));
++doffset;
}
stream = nullptr;
if(regnum >= mRegions.size()) mRegions.resize(regnum+1);
mRegions[regnum] = std::move(region);
}
loadPakList("CLIMATE.PAK", mClimates);
loadPakList("POLITIC.PAK", mPolitics);
mViewer = viewer;
mSceneRoot = sceneroot;
}