williamjcm/MassBuilderSaveTool
williamjcm/MassBuilderSaveTool
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Gvas: add support for UE5 saves.

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Fuckers at Epic added four more bytes to the file header, and not
even equivalent Rust libraries know what those bytes are for.
This commit is contained in:
Guillaume Jacquemin 2024-07-13 15:03:30 +02:00
parent 3e0c0bb7a4
commit a290542f6e
Signed by: williamjcm
SSH key fingerprint: SHA256:AYLOg+iTV0ElElnlu4vqM4edFazVdRiuQB0Y5LoKc4A
2 changed files with 78 additions and 17 deletions
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93
src/Gvas/File.cpp
View file

@ -95,16 +95,39 @@ File::saveToFile() {
return false;
}
if(!writer.writeArray(arrayView(_magicBytes)) ||
!writer.writeUint32(_saveVersion) ||
!writer.writeUint32(_packageVersion) ||
!writer.writeUint16(_engineVersion.major) ||
!writer.writeUint16(_engineVersion.minor) ||
!writer.writeUint16(_engineVersion.patch) ||
!writer.writeUint32(_engineVersion.build) ||
if(!writer.writeArray(arrayView(_magicBytes))) {
_lastError = "Couldn't write the magic bytes."_s;
LOG_ERROR(_lastError);
return false;
}
if(!writer.writeUint32(_saveVersion)) {
_lastError = "Couldn't write the save version."_s;
LOG_ERROR(_lastError);
return false;
}
if(!writer.writeUint32(_packageVersion)) {
_lastError = "Couldn't write the package version."_s;
LOG_ERROR(_lastError);
return false;
}
if(_saveVersion == 3) {
if(!writer.writeUint32(_unknown)) {
_lastError = "Couldn't write some unknown bytes."_s;
LOG_ERROR(_lastError);
return false;
}
}
if(!writer.writeUint16(_engineVersion.major) ||
!writer.writeUint16(_engineVersion.minor) ||
!writer.writeUint16(_engineVersion.patch) ||
!writer.writeUint32(_engineVersion.build) ||
!writer.writeUEString(_engineVersion.buildId))
{
_lastError = "Couldn't write the header."_s;
_lastError = "Couldn't write the engine version."_s;
LOG_ERROR(_lastError);
return false;
}
@ -198,15 +221,53 @@ File::loadData() {
return;
}
if(!reader.readUint32(_saveVersion) ||
!reader.readUint32(_packageVersion) ||
!reader.readUint16(_engineVersion.major) ||
!reader.readUint16(_engineVersion.minor) ||
!reader.readUint16(_engineVersion.patch) ||
!reader.readUint32(_engineVersion.build) ||
!reader.readUEString(_engineVersion.buildId))
if(!reader.readUint32(_saveVersion)) {
_lastError = "Couldn't read save version.";
LOG_ERROR(_lastError);
return;
}
if(!reader.readUint32(_packageVersion)) {
_lastError = "Couldn't read package version.";
LOG_ERROR(_lastError);
return;
}
if(_saveVersion == 3) {
if(!reader.readUint32(_unknown)) {
_lastError = "Couldn't read some unknown bytes.";
LOG_ERROR(_lastError);
return;
}
}
if(!reader.readUint16(_engineVersion.major)) {
_lastError = "Couldn't read major engine version.";
LOG_ERROR(_lastError);
return;
}
if(!reader.readUint16(_engineVersion.minor)) {
_lastError = "Couldn't read minor engine version.";
LOG_ERROR(_lastError);
return;
}
if(!reader.readUint16(_engineVersion.patch)) {
_lastError = "Couldn't read patch engine version.";
LOG_ERROR(_lastError);
return;
}
if(!reader.readUint32(_engineVersion.build)) {
_lastError = "Couldn't read engine build.";
LOG_ERROR(_lastError);
return;
}
if(!reader.readUEString(_engineVersion.buildId))
{
_lastError = "Couldn't read version data.";
_lastError = "Couldn't read engine build ID string.";
LOG_ERROR(_lastError);
return;
}

2
src/Gvas/File.h
View file

@ -17,7 +17,6 @@
// along with this program. If not, see <https://www.gnu.org/licenses/>.
#include <Corrade/Containers/ArrayView.h>
#include <Corrade/Containers/GrowableArray.h>
#include <Corrade/Containers/Reference.h>
#include <Corrade/Containers/StaticArray.h>
#include <Corrade/Containers/String.h>
@ -73,6 +72,7 @@ class File {
std::uint32_t _saveVersion = 0;
std::uint32_t _packageVersion = 0;
std::uint32_t _unknown = 0;
struct {
std::uint16_t major = 0;
std::uint16_t minor = 0;