Multiplayer Teams

[jhuenges]

Kind of a long shot, but you mentioned here that it would be pretty easy to implement multiplayer team support. Can you point me in the right direction?

[dougz]

It's been a while, but I think the key is here: https://github.com/dougz/trueskill/blob/master/trueskill.py#L351. Each team node 't' is linked to the performance 'p' of a single player on that line. If you want to have a team with multiple players, you modify the SumFactor to include multiple performances, each with a weight coefficient. These must add to 1. If you want to have two players on a team then your SumFactor expression becomes something like SumFactor(t, [p1, p2], [0.5, 0.5]). (Remember that 'p' here is "performance", not "player".) If the players are not equally responsible for the team (eg, one's the "captain" or something) then you might weight them unequally. Apart from that it's just plumbing and figuring out how to express the composition of the teams. Maybe instead of ranked players, you pass in ranked teams, where each team has a list of players and a weight for each player. dz

[jhuenges]

Sounds good. Thanks!