-- 入室時コールバックの登録
vci.vc.room.OnPlayerJoined(
    function (joinEvent)  -- {"PlayerId": string}
        local id = joinEvent["PlayerId"]
        local name = vci.vc.room.GetPlayerById(id).GetName()
        if name ~= nil then print(name.." joined.") end
        idToNameMap[id] = name
    end
)