This draft has been deprecated; zzo38 made a better one…
| Flag | Set? (MUST/MAY/…) | Description |
|---|---|---|
| parsing_must | MUST NOT | |
| reading_must | MUST NOT | |
| writing_must | MUST | Relies on board count not changing when edited. |
| playing_should | MUST NOT | |
| playing_must | MUST NOT | |
| editing_should | MUST |
The field data contains a list of `u16` values, the count of which matches the count of boards on the world, referred to as “board groups”.
This extension allows defining board groups for low-memory platforms.
ZZT typically keeps all boards in memory during playthrough. However, some boards are never used in gameplay (toolkit boards); other boards may never be returned to (in the case of a linear playthrough). As a memory optimization for ROM-based platforms, it would be vital to know which boards have to be kept in memory at any given time.
Upon a successful board transition, the implementation MAY forget all boards whose “board group” values do not match the current board's.
There is a tool which can generate mostly-correct board group information for a given world. However, it has to be expanded upon, and ZXT-compliant output added.
TBD