OpenMW-CS: FRMR subrecords are saved with the wrong MastIdx
OpenMW-cs fails to save FRMR MastIdx proper value bringing duplication of objects in game.
I attached a minimal example, in the zip archive are two esp files: bck_no_pit.esp is the original, ocs_no_pit.esp is the result of just opening and saving it with OpenMW-cs.
The mod is tiny, it replaces the tar pit of the Urshilaku camp with a bunch of rocks.
bck_no_pit.esp
Record: TES3 "()" Flags:0x0000 ()
HEDR: Version:1.3 Is_Master:False Author:""
Description:""
N_Records:1
*MAST: Master:morrowind.esm
DATA: Length:79837557
Record: CELL "urshilaku camp (-4, 18)" Flags:0x0000 ()
NAME: Name:Urshilaku Camp
DATA: (Exterior) Coordinates: (-4, 18) Flags:0x0046 (Has_Water, Illegal_To_Sleep_Here)
RGNN: Region:Ashlands Region
NAM5: Color:6333898
NAM0: Reference_Count:1
*FRMR: ObjIdx:129925 MastIdx:1
NAME: Name:Terrain_rocks_WG_03
DATA: X:-27380.828 Y:150868.656 Z:700.000 X_Angle:0.0000 Y_Angle:0.0000 Z_Angle:0.0000
after saving it becomes
Record: TES3 "()" Flags:0x0000 ()
HEDR: Version:1.3 Is_Master:False Author:""
Description:""
N_Records:1
*MAST: Master:Morrowind.esm
DATA: Length:79837557
Record: CELL "urshilaku camp (-4, 18)" Flags:0x0000 ()
NAME: Name:Urshilaku Camp
DATA: (Exterior) Coordinates: (-4, 18) Flags:0x0046 (Has_Water, Illegal_To_Sleep_Here)
RGNN: Region:Ashlands Region
NAM5: Color:6333898
NAM0: Reference_Count:1
*FRMR: ObjIdx:129925 MastIdx:0
NAME: Name:Terrain_rocks_WG_03
DATA: X:-27380.828 Y:150868.656 Z:700.000 X_Angle:0.0000 Y_Angle:0.0000 Z_Angle:0.0000
It is almost the same, but the different MastIdx breaks the effect in game. So that you'll see the rocks and the pit overlapping.
It is possible to have the same effect making a mod that moves existing objects. For example create a mod that just moves the Journal of Tarhiel (id bk_falljournal_unique
) of few steps using the Bethesda editor. Open and save the mod with OpenMW-cs and you will get two copies of the book.
The bug is critical for it stops openmw-cs to be usable to edit a large class of mods.