I have a flow that when a client enters the game, I use getAllAvailableRooms to get all game lobbies a client can join, or allow him to create a new one (See the PR I sent to colyseus).
After they join a game lobby, they basically join a GameLobby room, which waits until all clients are ready and the owner presses Start and the game should then start.
My idea is that I should be able to create a room from inside the onMessage function,
which would in turn give me the newly created roomId, which I can broadcast to my players with a start_game action.
But unfortunately, a room cannot access the matchmaker...
Given that - how would you go and make something like that?
Btw, this is the repo for code example and references.