Allow matches between multiples players

[sephii]

Some sports (or matches) are played with teams with more than 1 player. The user should be able to enter scores for such teams. The current code is ready for this: there's a Team model that consists of one or many User objects.

[sephii]

The number of players allowed in a team should be stored in the competition, that way we won't mix results that don't go together.

[krtek4]

For me you can have two different kind of "multiplayer" :

• Score boards where the team are ranked, with or without possibilities to be part of multiple teams
• Score boards where team game are allowed, but where the ranking of each player is updated individually (TrueSkill was created for this situation, don't know about other ranking algorithm though if we decide to change)

[sephii]

Yes we'll need to decide which of these implementations we'll choose, while keeping in mind that we might drop Trueskill someday.

[krtek4]

A crude way of implementing the second option will be to rank two virtual teams of which the skill is the sum of the skills of the members and then each team member skill is adjusted with the ratio of the skill corresponding to the part the participated.

(I hope I am clear)