Authors: Evanlyn

• DS Map Studio, and basic usage knowledge
• DarkScript 3, and basic usage knowledge
• Yabber (w/ unpacked Elden Ring folder)
• Patience.

Be sure to take notes of all the relevant names and IDs as you go. Make lots of backups.

Be careful not to use any duplicate flags or Entity IDs; regions with duplicate EntityIDs in particular have a chance to permanently corrupt loaded mapbnds, so exercise caution.

Be careful when making Flag IDs; if the fifth digit is 1-9, it will cause the flag to reset on grace/area reload (Eg: XXXX0XXX).

Refer to other Entity or Flag IDs to see how FromSoft formatted them; sometimes it might matter, or not.

If you're curious about most entities having MapID: -1, UnkE0C: 255, and UnkS0C: -1, don't ask me. I have no idea, but changing it can break things. So just keep them that way.

Note: This specifically covers the Catacombs boss doors. The process may or may not differ for other door/lever models.

1. Create a new door asset (Ex: AEG027_041) and a new lever asset (Ex: AEG027_115). Give them each unique EntityIDs.

1b. For this model of lever, you can change the AssetSfxParamRelativeID to add a candlelight effect to the attached statue's lantern.

2. Create a new ObjAct, and set the following values:

• ObjActEntityID: Unique Value
• ObjActPartName: Name Of Lever Asset
• ObjActID: 27115
• EventFlagID: 0
• EventID: 0
• MapID: -1
• UnkE0C: 255
• UnkS0C: -1

3. Add the following lines to Event(0 to initialize the necessary common events (90005650, 90005651)

    InitializeCommonEvent(0, 90005650, EventFlagID, DoorEntityID, LeverEntityID, ObjActEntityID, ObjActID);
    InitializeCommonEvent(0, 90005651, EventFlagID, DoorEntityID);

Notes: EventFlagID should be a unique value, fifth digit cannot be 1.

4. Well done.