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d06cc2923ed36b28ea8cdfe55b6b045e2da53323
DarkflameServer/dCommon/LevelFile.cpp
Aaron Kimbrell d06cc2923e fix: read a scene file's chunks, environment and objects as the client does 
The world read only a scene's objects and skipped the rest with
file.ignore. Level now reads a .lvl the way SceneLoader::LoadLvlFile
does (1.10.64) and keeps what it reads.

Chunked files: the file info chunk gives where the environment, object
and particle chunks start (the chunks were walked in order before); the
environment chunk gives where the lighting, skydome and editor settings
start, and the client reads all three only when there is lighting.

Files from before chunks: the no-editor-settings byte only from version
32, the revision from 37, a file newer than 48 is not read, a file
older than 3 has no objects; then lighting, skydome, editor settings
and objects in turn.

Kept, by version:
- lighting: blend time (45 on, default 10), ambient, specular, upper
  hemisphere, position, min and max draw distances (31 on; before 39
  fog near and far only), cull settings (40 on), fog colour (31 on),
  directional colour (36 on), and before 42 the zone's spawn point
  (before 33 the fixed one the client uses);
- the skydome and its five other files (34 on; they were skipped from
  33);
- the editor's colours (37 on, the first 32);
- each object's node type (38 on), glom ID (32 on) and render
  techniques (7 on: a 64 byte name, then per technique a 64 byte name,
  u32, u8 and 16 floats); before, a count of techniques was read and
  the techniques themselves were not, so an object with any misread
  the rest of the file.

Object config is split at line breaks as before. A file that ends early
keeps the objects read before its end.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-11-10 11:51:49 -06:00

250 lines
8.8 KiB
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#include "LevelFile.h"
#include <algorithm>
#include <istream>
#include <stdexcept>
#include "BinaryIO.h"
#include "GeneralUtils.h"
#include "Logger.h"
namespace {
constexpr uint32_t CHNK_HEADER = ('C' + ('H' << 8) + ('N' << 16) + ('K' << 24));
// A fixed size, zero padded name
std::string ReadName64(std::istream& file) {
std::string name(64, '\0');
file.read(name.data(), static_cast<std::streamsize>(name.size()));
if (file.fail()) throw std::runtime_error("Failed to read from istream.");
name.resize(std::min(name.find('\0'), name.size()));
return name;
}
// A u32 count of wide characters
std::string ReadWideString32(std::istream& file) {
std::u16string value;
BinaryIO::ReadString<uint32_t>(file, value);
if (file.fail()) throw std::runtime_error("Failed to read from istream.");
return GeneralUtils::UTF16ToWTF8(value);
}
}
void LevelFile::Read(std::istream& file) {
uint32_t magic = 0;
BinaryIO::BinaryRead(file, magic);
if (magic == CHNK_HEADER) {
// SceneLoader::LoadLvlFile / LvlChunkFile::Read: the file info chunk starts the file and gives where the
// environment, object and particle chunks start (0 for none)
ChunkHeader fileInfo = ReadChunkHeader(file, 0);
file.seekg(fileInfo.startPosition);
ReadFileInfoChunk(file, fileInfo);
chunkHeaders.insert({ fileInfo.id, fileInfo });
version = fileInfo.fileInfo.version;
revision = fileInfo.fileInfo.revision;
if (fileInfo.fileInfo.enviromentChunkStart != 0) {
const auto header = ReadChunkHeader(file, fileInfo.fileInfo.enviromentChunkStart);
chunkHeaders.insert({ header.id, header });
// EnvironmentChunk::ReadLvlChunk2000: where the lighting, skydome and editor settings start
file.seekg(header.startPosition);
BinaryIO::BinaryRead(file, enviroment.lightingStart);
BinaryIO::BinaryRead(file, enviroment.skydomeStart);
BinaryIO::BinaryRead(file, enviroment.editorSettingsStart);
// The client reads all three only when there is lighting
if (enviroment.lightingStart != 0) {
file.seekg(enviroment.lightingStart);
ReadLightingInfo(file);
file.seekg(enviroment.skydomeStart);
ReadSkydomeInfo(file);
file.seekg(enviroment.editorSettingsStart);
ReadEditorSettings(file);
}
}
if (fileInfo.fileInfo.objectChunkStart != 0) {
const auto header = ReadChunkHeader(file, fileInfo.fileInfo.objectChunkStart);
chunkHeaders.insert({ header.id, header });
file.seekg(header.startPosition);
ReadSceneObjectDataChunk(file);
}
if (fileInfo.fileInfo.particleChunkStart != 0) {
const auto header = ReadChunkHeader(file, fileInfo.fileInfo.particleChunkStart);
chunkHeaders.insert({ header.id, header });
}
return;
}
// Scenes from before chunks: a header (SceneLoader::ReadLvlHeader), then each part in turn
file.seekg(0);
ChunkHeader header;
header.id = ChunkTypeID::FileInfo;
BinaryIO::BinaryRead(file, header.chunkVersion);
BinaryIO::BinaryRead(file, header.chunkType);
version = header.chunkVersion;
if (version >= 32) BinaryIO::BinaryRead(file, noEditorSettings);
if (version > 36) BinaryIO::BinaryRead(file, revision);
header.fileInfo.version = version;
header.fileInfo.revision = revision;
chunkHeaders.insert({ header.id, header });
// A newer file is refused ("newer than the client understands")
if (version > 48) {
LOG("Scene file version %u is newer than the client reads; nothing read from it", version);
return;
}
ReadLightingInfo(file);
ReadSkydomeInfo(file);
ReadEditorSettings(file);
ReadSceneObjectDataChunk(file);
}
LevelFile::ChunkHeader LevelFile::ReadChunkHeader(std::istream& file, uint32_t start) {
// No check of the magic, as in the client (0x01063a00)
file.seekg(start);
uint32_t magic = 0;
ChunkHeader header;
BinaryIO::BinaryRead(file, magic);
BinaryIO::BinaryRead(file, header.id);
BinaryIO::BinaryRead(file, header.chunkVersion);
BinaryIO::BinaryRead(file, header.chunkType);
BinaryIO::BinaryRead(file, header.size);
BinaryIO::BinaryRead(file, header.startPosition);
return header;
}
void LevelFile::ReadFileInfoChunk(std::istream& file, ChunkHeader& header) {
BinaryIO::BinaryRead(file, header.fileInfo.version);
BinaryIO::BinaryRead(file, header.fileInfo.revision);
BinaryIO::BinaryRead(file, header.fileInfo.enviromentChunkStart);
BinaryIO::BinaryRead(file, header.fileInfo.objectChunkStart);
BinaryIO::BinaryRead(file, header.fileInfo.particleChunkStart);
}
void LevelFile::ReadLightingInfo(std::istream& file) {
// SceneLoader::ReadLightingInfo (0x0102f8f0)
hasLighting = true;
if (version >= 45) BinaryIO::BinaryRead(file, lighting.blendTime);
BinaryIO::BinaryRead(file, lighting.ambient);
BinaryIO::BinaryRead(file, lighting.specular);
BinaryIO::BinaryRead(file, lighting.upperHemi);
BinaryIO::BinaryRead(file, lighting.position);
if (version >= 31) {
if (version < 39) {
BinaryIO::BinaryRead(file, lighting.maxDrawDistances.fogNear);
BinaryIO::BinaryRead(file, lighting.maxDrawDistances.fogFar);
lighting.minDrawDistances.fogNear = lighting.maxDrawDistances.fogNear;
lighting.minDrawDistances.fogFar = lighting.maxDrawDistances.fogFar;
} else {
for (auto* distances : { &lighting.minDrawDistances, &lighting.maxDrawDistances }) {
BinaryIO::BinaryRead(file, distances->fogNear);
BinaryIO::BinaryRead(file, distances->fogFar);
BinaryIO::BinaryRead(file, distances->postFogSolid);
BinaryIO::BinaryRead(file, distances->postFogFade);
BinaryIO::BinaryRead(file, distances->staticObjectDistance);
BinaryIO::BinaryRead(file, distances->dynamicObjectDistance);
}
if (version >= 40) {
uint32_t count = 0;
BinaryIO::BinaryRead(file, count);
for (uint32_t i = 0; i < count; ++i) {
SceneCullSetting setting;
BinaryIO::BinaryRead(file, setting.group);
BinaryIO::BinaryRead(file, setting.minDistance);
BinaryIO::BinaryRead(file, setting.maxDistance);
lighting.cullSettings.push_back(setting);
}
}
}
BinaryIO::BinaryRead(file, lighting.fogColor);
}
if (version >= 36) BinaryIO::BinaryRead(file, lighting.directional);
if (version < 42) {
lighting.hasSpawnPoint = true;
BinaryIO::BinaryRead(file, lighting.filePosition);
if (version < 33) {
lighting.spawnPosition = NiPoint3(347.0f, 284.0f, -325.0f);
lighting.spawnRotation = NiQuaternion(0.97082251f, 0.0f, 0.23979919f, 0.0f);
} else {
lighting.spawnPosition = lighting.filePosition;
BinaryIO::BinaryRead(file, lighting.spawnRotation);
}
}
}
void LevelFile::ReadSkydomeInfo(std::istream& file) {
// SceneLoader::ReadSkydomeInfo (0x0102f550)
BinaryIO::ReadString<uint32_t>(file, skydome.filename, BinaryIO::ReadType::String);
if (version >= 34) {
for (auto& filename : skydome.extraFilenames) BinaryIO::ReadString<uint32_t>(file, filename, BinaryIO::ReadType::String);
}
}
void LevelFile::ReadEditorSettings(std::istream& file) {
// SceneLoader::ReadEditorSettings (0x0101b090): their size, then a count of colours; the client keeps the first 32
if (version < 37 || noEditorSettings != 0) return;
uint32_t size = 0;
BinaryIO::BinaryRead(file, size);
uint32_t count = 0;
BinaryIO::BinaryRead(file, count);
for (uint32_t i = 0; i < count; ++i) {
NiColor color;
BinaryIO::BinaryRead(file, color);
if (i < 32) editorColors.push_back(color);
}
}
void LevelFile::ReadSceneObjectDataChunk(std::istream& file) {
// SceneLoader::ReadLvlGameObjects: the client has no objects for a file older than version 3 ("Level file is
// unsupported"), and before chunks reads nothing after them either
if (version < 3) return;
uint32_t objectsCount = 0;
BinaryIO::BinaryRead(file, objectsCount);
for (uint32_t i = 0; i < objectsCount; ++i) {
// SceneLoader::ReadLvlObjectData (0x0103ba20)
SceneObject obj;
BinaryIO::BinaryRead(file, obj.id);
BinaryIO::BinaryRead(file, obj.lot);
if (version >= 38) {
int32_t nodeType = 1;
BinaryIO::BinaryRead(file, nodeType);
if (nodeType > -1 && nodeType < 11) obj.nodeType = nodeType;
}
if (version >= 32) BinaryIO::BinaryRead(file, obj.glomId);
BinaryIO::BinaryRead(file, obj.position);
BinaryIO::BinaryRead(file, obj.rotation);
BinaryIO::BinaryRead(file, obj.scale);
const auto config = ReadWideString32(file);
if (version >= 7) {
uint32_t techniqueCount = 0;
BinaryIO::BinaryRead(file, techniqueCount);
if (techniqueCount != 0) {
obj.renderTechniquesName = ReadName64(file);
obj.renderTechniques.resize(techniqueCount);
for (auto& technique : obj.renderTechniques) {
technique.name = ReadName64(file);
BinaryIO::BinaryRead(file, technique.valueCount);
BinaryIO::BinaryRead(file, technique.isColor);
for (auto& value : technique.values) BinaryIO::BinaryRead(file, value);
}
}
}
if (file.fail()) throw std::runtime_error("Failed to read from istream.");
for (const auto& token : GeneralUtils::SplitString(config, '\n')) obj.settings.ParseInsert(token);
objects.push_back(std::move(obj));
}
}
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