diff options
Diffstat (limited to 'server.js')
| -rw-r--r-- | server.js | 25 |
1 files changed, 18 insertions, 7 deletions
@@ -2056,6 +2056,11 @@ const SQL_SELECT_RATING_GAME = SQL("select * from rated_games_view where game_id const SQL_SELECT_RATING_PLAYERS = SQL("select * from player_rating_view where game_id=?") const SQL_INSERT_RATING = SQL("insert or replace into ratings (title_id,user_id,rating,count,last) values (?,?,?,?,?)") +function is_winner(role, result) { + // NOTE: uses substring matching for multiple winners instead of splitting result on comma. + return (result === "Draw" || result === role || result.includes(role)) +} + function elo_k(a) { return a.count < 10 ? 60 : 30 } @@ -2080,18 +2085,24 @@ function update_elo_ratings(game_id) { if (!game) return + if (!game.result || game.result === "None") + return + let players = SQL_SELECT_RATING_PLAYERS.all(game_id) - let winner = null + let winners = 0 for (let p of players) - if (p.role === game.result) - winner = p + if (is_winner(p.role, game.result)) + winners ++ + + if (winners === 0) + return for (let p of players) - if (winner !== null) - p.change = elo_change(p, players, p === winner ? 1 : 0) + if (is_winner(p.role, game.result)) + p.change = elo_change(p, players, 1 / winners) else - p.change = elo_change(p, players, 1 / players.length) + p.change = elo_change(p, players, 0) for (let p of players) SQL_INSERT_RATING.run(game.title_id, p.user_id, p.rating + p.change, p.count + 1, game.mtime) @@ -2395,7 +2406,7 @@ const QUERY_PURGE_FINISHED_GAMES = SQL(` games where status > 1 - and ( not is_opposed or moves <= player_count * 3 ) + and ( not is_opposed or moves < player_count * 3 ) and julianday(mtime) < julianday('now', '-10 days') `) |