Enhance matchmaker sub-system about nakama

[prodigga]

Matchmaking should support group play.

IE I want to play a match together with my friend. I ask nakama to match make for me and my friend (maybe I provide both our UserIDs as well as our "MMR"). The server puts us together in to a match.

I guess it would also be important that the players be put into the same team within the match, so the server not only has to find a game with 2 free spots, but one with 2 free spots on the same team. (Currently server knows 'nothing' about a match - I guess it would need to 'know' about the concept of 'teams', how many 'teams' in the match, which player is in which team, etc.)

[prodigga]

Maybe the API could be something like this:

var matchFindRequest = new NMatchFindMessage.Builder().
SearchRooms(string[]{"1v1","CaptureTheFlag","SearchAndDestroy"}).
AddSearchParam("MMR",50, 25).
SetTimeout(20).
Build();

client.Send(matchFindRequest , (INMatchMakingResult result) =>
{
  //found match
}, (INError error) => {
  //error
});

SearchRooms - Only match make with people in the same 'room'. This is just a way for us developers to filter out which kind of games the player is going to play in. Users do not 'create' rooms. Maybe developers create 'rooms' via command line on the server, similar to leaderborads? The developer can specify how many users per match in the room, etc.

In the game, player presses: Start -> Multiplayer -> Free For All -> Find Match so we send an NMatchFindMessage with SearchRooms(string[]{"FFA"}). If user selects Start -> Multiplayer -> All-> Find Match, we send an NMatchFindMessage with SearchRooms(string[]{"FFA","DM","CTF"}).

AddSearchParam - 'fuzzy' match making values. IE Pass in an "MMR" of "50"and a max search range of "25" (ie match against others with an MMR of 25-75. I am not sure if this is the 'best' way to do it, but just an idea.

SetTimeout Time out for the search operation. Return an error if match not found after this time?

INMatchMakingResult Contains a reference to the INMatch that was found, and also

var cancelMatchFind = new NCancelMatchFindMessage.Default();
client.Send(cancelMatchFind, //etc....

To cancel current match find operation?

Just suggestions

[zyro]

The initial framework for this feature is available on master since 46e50e1. Matchmaking criteria improvements remain scheduled for 0.14.0.

[risheelk]

i like to add filters like range like rank 2- 4 and score 2000 -2800 etc
player will send this to server and server should match other who is also having rank and score within the range

[mofirouz]

This is now available on commit dc0a596 and will be available in Nakama 1.1.0+