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feat(zone): read the zone boundary lines of .luz files

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Between the scenes and the terrain file's name a zone file has its
boundary lines: a u8 count, then per line a normal, a point, the
destination zone, the destination scene ID and a spawn location. The
reader took that spot for a u8-length "zone path" string, which is the
same bytes only when there are no boundaries; a zone with boundaries
would have misread everything after it.

The destination is one u32 in the client (LuzReader::ReadZoneBoundaryLines,
0x01018490 in 1.10.64: map ID in bits 0-15, instance ID in bits 16-31,
clone 0), read here as two u16s into an LWOZONEID with clone 0. The
boundaries are kept on ZoneFile::zoneBoundaries.

No zone of the 1.10.64 client (or any other client on disk) has
boundary lines, so what is read from them is unchanged.

Check in game: every world loads and zone transfers (launch pads,
rockets, portals) work as before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Aaron Kimbrell
2026-09-29 04:22:34 -05:00
parent 3b127cfa0e
commit 97a1453bf7
4 changed files with 66 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
dCommon/ZoneFile.cpp
View File

@@ -31,8 +31,9 @@ void ZoneFile::ReadHeader(std::istream& file) {
ReadScene(file);
}
ReadZoneBoundaries(file);
//Read generic zone info:
BinaryIO::ReadString<uint8_t>(file, zonePath, BinaryIO::ReadType::String);
BinaryIO::ReadString<uint8_t>(file, zoneRawPath, BinaryIO::ReadType::String);
BinaryIO::ReadString<uint8_t>(file, zoneName, BinaryIO::ReadType::String);
BinaryIO::ReadString<uint8_t>(file, zoneDesc, BinaryIO::ReadType::String);
@@ -89,6 +90,26 @@ void ZoneFile::ReadScene(std::istream& file) {
scenes.push_back(std::move(scene));
}
void ZoneFile::ReadZoneBoundaries(std::istream& file) {
uint8_t count = 0;
BinaryIO::BinaryRead(file, count);
zoneBoundaries.reserve(count);
for (uint8_t i = 0; i < count; ++i) {
ZoneBoundary boundary;
BinaryIO::BinaryRead(file, boundary.normal);
BinaryIO::BinaryRead(file, boundary.point);
// The client reads one u32 of map ID (low 16 bits) and instance ID (high 16 bits)
LWOMAPID mapID = 0;
LWOINSTANCEID instanceID = 0;
BinaryIO::BinaryRead(file, mapID);
BinaryIO::BinaryRead(file, instanceID);
boundary.destZoneID = LWOZONEID(mapID, instanceID, 0);
BinaryIO::BinaryRead(file, boundary.destSceneID);
BinaryIO::BinaryRead(file, boundary.spawnLocation);
zoneBoundaries.push_back(boundary);
}
}
void ZoneFile::ReadSceneTransition(std::istream& file) {
SceneTransition sceneTrans;
if (fileFormatVersion < FileFormatVersion::Auramar) {

13
dCommon/ZoneFile.h
View File

@@ -35,6 +35,15 @@ struct ZoneScene {
uint8_t color_b{};
};
// A line the player crosses to leave the zone (the client's LuzReader::ReadZoneBoundaryLines)
struct ZoneBoundary {
NiPoint3 normal;
NiPoint3 point;
LWOZONEID destZoneID; // clone 0
uint32_t destSceneID{};
NiPoint3 spawnLocation;
};
struct SceneTransitionInfo {
uint64_t sceneID{}; //id of the scene being transitioned to.
NiPoint3 position;
@@ -209,7 +218,8 @@ struct ZoneFile {
std::vector<ZoneScene> scenes;
std::string zonePath; //Path to the .luz's folder as written in the file
std::vector<ZoneBoundary> zoneBoundaries;
std::string zoneRawPath; //Path to the .raw file of this zone.
std::string zoneName; //Name given to the zone by a level designer
std::string zoneDesc; //Description of the zone by a level designer
@@ -234,6 +244,7 @@ struct ZoneFile {
private:
void ReadScene(std::istream& file);
void ReadZoneBoundaries(std::istream& file);
void ReadSceneTransition(std::istream& file);
SceneTransitionInfo ReadSceneTransitionInfo(std::istream& file);
void ReadPath(std::istream& file);