LVL

Description

.lvl is the LevelEdit project file format.

In OpenW3D, LevelEdit saves/loads .lvl through EditorSaveLoadClass.

References

• Tools/LevelEdit/EditorSaveLoad.cpp

• Tools/LevelEdit/EditorSaveLoad.h

• Tools/LevelEdit/EditorChunkIDs.h

• Tools/LevelEdit/lightsolvesavesystem.h

• Tools/LevelEdit/lightsolvesavesystem.cpp

• Tools/LevelEdit/LevelEditDoc.cpp

• wwlib/chunkio.h

Specification

Container model

.lvl is chunk-based and uses the same chunk/micro-chunk primitives as other SaveLoad-backed files.

Top-level layout

Current format writes two wrapper chunks:

• CHUNKID_LVL_DATA (value 304021447)

• CHUNKID_LIGHT_SOLVE (value 304021448)

The loader peeks the first chunk:

• If first chunk is CHUNKID_LVL_DATA, it loads both wrappers as modern format.

• Otherwise it falls back to legacy single-stream SaveLoad data.

CHUNKID_LVL_DATA content

Save_Level_Data writes these SaveLoad subsystems in order:

• _PhysStaticDataSaveSystem

• _TheNodeMgr

• _TheEditorSaveLoadSubsystem

• _TheBackgroundMgr

• _TheWeatherMgr

• _TheMapMgrSaveLoadSubsystem

• _TheHeightfieldMgrSaveLoadSubsystem

• _ConversationMgrSaveLoad (category set to level)

CHUNKID_LIGHT_SOLVE content

Save_Light_Solve writes _TheLightSolveSaveSystem (chunk id CHUNKID_EDITOR_LIGHT_SOLVE_SAVELOAD). Its internal records include:

• LSS_CHUNKID_OBJECT_LIGHT_SOLVE (30102537)

• LSS_CHUNKID_OBJECT_VARIABLES

• LSS_CHUNKID_OBJECT_LIGHTING

Object variables are stored as micro-chunks:

• Object ID

• Render object class ID

• Sub-object count