Exemple #1
0
func (mp *MatchmakerParticipant) Quality(opponent *MatchmakerParticipant) float64 {
	teams := []skills.Team{mp.team, opponent.team}
	var calc trueskill.TwoPlayerCalc
	quality := calc.CalcMatchQual(skills.DefaultGameInfo, teams)

	return quality
}
Exemple #2
0
func calculateNewRating(winnerId, loserId int64, winnerRating, winnerStdDev, loserRating, loserStdDev float64) (winnerNewRating, winnerNewStdDev, loserNewRating, loserNewStdDev, quality float64) {
	team1 := skills.NewTeam()
	team2 := skills.NewTeam()

	team1.AddPlayer(winnerId, skills.NewRating(winnerRating, winnerStdDev))
	team2.AddPlayer(loserId, skills.NewRating(loserRating, loserStdDev))

	teams := []skills.Team{team1, team2}

	var calc trueskill.TwoPlayerCalc
	ratings := calc.CalcNewRatings(skills.DefaultGameInfo, teams, 1, 2)
	quality = calc.CalcMatchQual(skills.DefaultGameInfo, teams)

	return ratings[winnerId].Mean(), ratings[winnerId].Stddev(), ratings[loserId].Mean(), ratings[loserId].Stddev(), quality
}
Exemple #3
0
func RateGames(players []int64, games []Result) (Rankings, error) {

	// TODO(dm): this function is messy because the API we are depending on
	// (GoSkills) is pretty weird. Could be cleaned up by just moving the
	// calculation logic into our own impl

	if err := checkGameParticipantsArePlayers(players, games); err != nil {
		return nil, err
	}

	ratings := DefaultRatings(players)
	for _, r := range games {
		whiteTeam := skills.NewTeam()
		whiteTeam.AddPlayer(r.WhiteID, rating2srating(ratings[r.WhiteID]))
		blackTeam := skills.NewTeam()
		blackTeam.AddPlayer(r.BlackID, rating2srating(ratings[r.BlackID]))

		var twoPlayerCalc trueskill.TwoPlayerCalc
		ranks, err := outcomeToRanks(r.Outcome)
		if err != nil {
			return nil, err
		}
		newSkills := twoPlayerCalc.CalcNewRatings(gameInfo, []skills.Team{whiteTeam, blackTeam}, ranks...)
		ratings[r.WhiteID] = srating2rating(newSkills[r.WhiteID])
		ratings[r.BlackID] = srating2rating(newSkills[r.BlackID])
	}

	ranks := make(Rankings, 0)
	for id, rating := range ratings {
		ranks = append(ranks, Ranking{PlayerID: id, Rating: rating, Rank: -1})
	}
	sort.Sort(ranks)
	var prevRating Rating
	for i, _ := range ranks {
		if prevRating == ranks[i].Rating {
			ranks[i].Rank = ranks[i-1].Rank
		} else {
			ranks[i].Rank = i + 1
		}
		prevRating = ranks[i].Rating
	}
	return ranks, nil
}