feat: declared extra controls in GameMeta (wire revision 6)#38
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A trailing presence-guarded meta section listing inputs beyond the canonical control vocabulary — a printable rune or a named key, each with a short display label — so front ends on devices without the corresponding physical key (touch) can surface each declaration as a tappable affordance sending exactly the declared input. Presentation metadata only; declarations change no input interpretation. Go: GameMeta.Controls + RuneControl/KeyControl, wire.ControlDecl + ValidateControls, named key-code constants. Rust: Meta::controls + ControlDecl, Key::to_wire, byte-identical encoding (golden-pinned, incl. a new controls golden and the regenerated scalar vectors). ABI.md §4.2 declared-controls section + revision ledger entry 6; GUIDE.md mobile-friendly-controls authoring section. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Adds a declared-controls section to the game metadata: a game whose inputs go beyond the canonical control vocabulary (letter commands like
rto resign, a named key like Backspace to undo) can declare each one with a short display label, so front ends on devices without the corresponding physical key — touch screens — can surface a tappable affordance that sends exactly the declared input.Declarations are presentation metadata only: they change no input interpretation, and a game fully served by
Resolve()'s vocabulary needs none.Wire (ABI-additive minor, revision 6)
wireRevision:u16 count, then per controlu8 kind · (u32 rune | u8 key) · str label. Encoders always write it (count 0); payloads ending earlier decode as older metas with no declarations. Unknown kinds fail decode (entry size depends on kind — can't be framed past).wire.ControlDecl,wire.ValidateControls(printable rune or assigned key code, non-empty label ≤16 runes, no duplicate inputs, ≤32 decls), named key-code constants,wire.Revision5→6 with ledger entry.SDKs
GameMeta.Controls+kit.RuneControl('r', "RESIGN")/kit.KeyControl(kit.KeyBackspace, "UNDO"); validated atmeta()encode time (the config-spec fail-fast posture).Meta::controls+ControlDecl,Key::to_wire, byte-identical encoding — pinned by a new Go-emitted controls golden, the updated meta goldens, and the regeneratedscalars.txtvectors.Docs
Verification
go build/vet/test ./...green (incl. new round-trip/presence-guard/validation tests and the truncation-vector updates);cargo testgreen inrust/andcrossverify/; scalar golden vectors regenerated via the standardWIRE_SCALAR_GOLDEN_WRITE=1flow.Changeset: minor.
🤖 Generated with Claude Code