6 Commits

Author	SHA1	Message	Date
Ilia Denisov	4f4768b092	fix(rules): name a repeated word in the move preview instead of scoring it ... Composing an already-played word read as a perfectly legal move: the tiles drew as legal, the caption showed "БРА = 6" and the ✅ was enabled, and only the server refused the play with the bare "illegal move" toast. The on-device evaluator already applied the rule, but it reported the refusal as a plain illegal play, so nothing distinguished a repeated word from a misspelling and the caption fell back to the turn label. It now names the word it rejected, and the game screen reads "БРА: уже использовано" above the scores while the tiles stay marked invalid — the composition is wrong, but for a reason the player cannot read off the board, since the word itself is in the dictionary. The verdict is reached on the device before the play is ever offered to the server, in an online game exactly as in an offline one; the offline source reports the same reason through the same field. Only the main word is ever refused: a cross-word the game has already used still stands (it is incidental to laying the main word) and merely scores nothing, so the rule cannot falsely block a play in a game with several words per turn. The scoring of such a play is now pinned to the point on both sides: the engine test and the client test evaluate the same position — РОТ laid across a standing КО, completing an already-played КОТ — and assert the same totals (10 unrestricted, 5 with the rule), so a divergence between the two engines breaks one of them. The client test also replays the exact test-contour position this was reported from.	2026-07-27 19:12:37 +02:00
Ilia Denisov	d7337d24ea	feat(rules): forbid repeating a word already on the board in Erudit ... Russian "Эрудит" treats a word laid on the board as belonging to the game: it cannot be laid again. Neither the solver, the backend nor the offline JS port knew the rule, so a player (and the robot) could replay a word freely. Official Scrabble places no such restriction, so both Scrabble variants keep playing unrestricted. The rule applies in two ways. A play whose main word is already on the board is illegal, and is neither accepted nor generated. A play whose perpendicular cross-word is already there stands — that word is incidental to laying the main word — but scores nothing. The set of played words is the game's own move journal, main words and cross-words alike, compared decoded, so a word spelled with a blank is the same word. It lives in the game layer, not the solver: only a game knows its history, and the solver stays stateless and standard-rules. The backend applies it at submit, at the move preview and over generated moves (filtering and re-ranking them, so neither the robot nor the hint can offer a play the engine would then refuse); the client port does the same for the offline engine and for the on-device preview of an online game. The rule is pinned per game (games.no_repeat_words, set from the variant at creation) rather than keyed on the variant, because a game is replayed from its journal on every open. Applied retroactively it would make an already-played repeat illegal — closing that game as a draw — and would rescore a play whose cross-word repeats an earlier word, shifting a live game's totals. Games created before the rule keep playing without it. The flag rides the wire as a trailing field because the client's preview must score the way the server does, and offline games pin the same answer in their own record.	2026-07-27 18:33:56 +02:00
Ilia Denisov	1e087be90a	fix(offline): hotseat finished-game medals by final score (fix all-last-place on a tie) ... Reported: a hotseat game ended by 6 scoreless passes deducts each rack (correct rule, same as online: -8/-14/-8 here), which tied two seats for the lead. The engine's winner() returns -1 on a tie, so seatMedal read it as a full draw and gave EVERY seat the last-place medal. - result.ts: seatMedal now ranks by the FINAL score (competition ranking — a tie for the lead shares the trophy), not the single-winner flag. A resigned / host-excluded seat places last with no medal and does not push the others down. - model.ts: Seat.resigned (offline-only); engine.resignedOf getter; the local source surfaces it on the game view. - The scoreless rack deduction is unchanged (standard rules, owner-confirmed).	2026-07-07 15:37:25 +02:00
Ilia Denisov	32298595f2	feat(offline): local game source (Phase B3.1) ... A GatewayClient-shaped facade over the offline engine, so the same game screen can drive a local vs_ai game with no backend (the wiring into Game.svelte is B3.2). - source.ts: LocalSource implements the game-loop subset (GameLoopSource) for a local game id — gameState/gameHistory via replay, submitPlay/pass/exchange/resign apply the human move then run the robot (decide(generateMoves)) synchronously, persisting both and delivering the robot's move through a per-game event emitter (no live stream). hint is gated to >30 min since the robot's last move; evaluate/checkWord are local. It translates the UI's glyph space to the engine's index space with the static letters table. - ruleset.ts: add the static per-variant letters (glyphs), pinned to the Go alphabet — offline is now fully self-contained (no reliance on a warm server alphabet cache). - engine.ts: submitPlay (infers the direction like the server SubmitPlay), evaluatePlay + dictionaryHas for the move preview / word check, and record the main-word coordinate + the words on a play (for the history MoveRecord). - source.test.ts: create -> human pass -> synchronous robot reply via the event, the hint gate, decoded history, and a whole game driven to completion. Pure additive library code; no runtime behavior change (bundle unchanged).	2026-07-06 09:07:40 +02:00
Ilia Denisov	4fa77bf82c	feat(offline): local game persistence + replay (Phase B2) ... Store an offline game durably and reconstruct it — the offline counterpart of the server's replay rehydration. Builds on the engine (#191); not wired into the UI yet (Phase B3). - serialize.ts: a LocalGameRecord (seed + rules + seat metadata + the alphabet-index move journal) and replayGame() — reconstruct a live LocalGame by seeding a fresh engine identically and replaying the journal. The board/bag/racks are not stored; they are deterministic from the seed and the replayed operations, so the record stays small. The journal is dictionary-independent (alphabet-index space, stable per variant). - store.ts: an IndexedDB store for local games (save/get/list/delete), mirroring lib/dict/store.ts — its own database, best-effort, guarded when IndexedDB is absent. - engine.ts: record the swapped tiles on an exchange (needed for exact replay) and expose the game's rule config. - serialize.test.ts: a round-trip — reconstruct a mid-game and a finished game by replay and assert the state (board/racks/bag/scores/turn/log) is identical. Pure additive library code; no runtime behavior change (bundle unchanged).	2026-07-06 08:22:47 +02:00
Ilia Denisov	e4cf143e9f	feat(offline): local game engine (Phase B1) ... The offline vs_ai game engine — a faithful TS port of backend/internal/engine that drives a whole local game with no backend. Composes with the move generator (#188) and robot strategy (#189) from Phase A; not yet wired into the UI (Phase B2/B3). - ui/src/lib/localgame/ruleset.ts: static per-variant tile values / bag counts / blank count, mirrored from rules.go (offline scoring is self-contained; online uses the server alphabet). Pinned by ruleset.parity.test.ts against a Go fixture. - bag.ts: the tile bag (fill from counts/blanks, draw-from-end, return+reshuffle) on a deterministic in-house PRNG — a game replays from its seed, not bit-identical to a server game (per plan). - board.ts: the mutable board, satisfying the validator/generator read view + set(). - engine.ts: LocalGame — deal / play (reusing validate.ts) / pass / exchange / resign, scoreless(6) & out-of-tiles end detection, end-of-game rack penalties, winner; mirrors game.go. The end-game math is exported as pure functions, pinned against the Go engine (engine.parity.test.ts, 9 constructed positions). - engine.test.ts: a full-loop smoke — two robots play a whole vs_ai game to completion via generateMoves + decide, and it is reproducible from the seed. - backend: movegen now dumps the per-variant rulesets; a new in-package engine emitter (endfixture_test.go, env-gated) produces the end-game golden. Pure additive library code; no runtime behavior change (unused at runtime, bundle unchanged).	2026-07-06 08:02:05 +02:00