saves: create new item objects #337

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opened 2026-10-24 09:45:54 +02:00 by jqueuniet · 0 comments

jqueuniet commented

2026-10-24 09:45:54 +02:00

Owner

Allow constructing new item objects. The library and CLI only move, copy, clear and read existing ones today.

Scope

Allocate a record in the matching per-type array, assign a free object ID, set type, subtype and fields.
Update the per-type record counts in the dungeon state header (n_records) and anything else the engine relies on to find the record.
Refuse fields that don't persist through re-encode (per docs/formats/save-object-editability.md).
Place the new item in an inventory slot or a container, reusing the existing operations.
Expose through dm2-wasm; optionally dm2 save inventory --create.

Acceptance

A created item survives save → rebuild → re-read with all persistent fields intact.
The game loads the edited save and shows the item (manual check on DOS, noted in the PR).
Running out of record capacity is an error.

Blocked by the inventory-operations and container issues.

Allow constructing new item objects. The library and CLI only move, copy, clear and read existing ones today. ## Scope - Allocate a record in the matching per-type array, assign a free object ID, set type, subtype and fields. - Update the per-type record counts in the dungeon state header (`n_records`) and anything else the engine relies on to find the record. - Refuse fields that don't persist through re-encode (per `docs/formats/save-object-editability.md`). - Place the new item in an inventory slot or a container, reusing the existing operations. - Expose through `dm2-wasm`; optionally `dm2 save inventory --create`. ## Acceptance - A created item survives save → rebuild → re-read with all persistent fields intact. - The game loads the edited save and shows the item (manual check on DOS, noted in the PR). - Running out of record capacity is an error. Blocked by the inventory-operations and container issues.

jqueuniet added the

area/saves

type/feature

labels

2026-10-24 09:45:54 +02:00

jqueuniet referenced this issue from jqueuniet/dm2-web-editor

2026-10-24 09:46:19 +02:00

Create new items #15

jqueuniet added this to the dm2-tools project

2026-10-24 09:49:02 +02:00