var Event = {
    ////////////////////////////////
    //
    // client -> server
    //
    ////////////////////////////////

    // data: { PacketType:"group-create", pwd:string }
    GROUP_CREATE: 'group-create',
    // data: { PacketType:"group-join", id:string, pwd:string }
    GROUP_JOIN: 'group-join',
    // data: { PacketType:"group-leave", id:string }
    GROUP_LEAVE: 'group-leave',
    //
    GROUP_START: 'group-start',

    ////////////////////////////////
    //
    // server -> client
    //
    ////////////////////////////////

    // socket.emit()
    // data: { PacketType:"group-list", groups: [ GroupInfo.export() ] }
    GROUP_LIST: 'group-list',
    // ns.emit()
    // data: { PacketType:"group-created", group: GroupInfo.export() }
    GROUP_CREATED: 'group-created',
    // socket.emit()
    // data: { PacketType:"group-joined", id:string }
    GROUP_JOINED: 'group-joined',
    // socket.emit()
    // data: { PacketType:"group-join-fail-pwd", id:string }
    GROUP_JOIN_FAIL_PWD: 'group-join-fail-pwd',
    // ns.emit()
    // data: { PacketType:"group-destroyed", id:string }
    GROUP_DESTROYED: 'group-destroyed',
    // socket.emit()
    // data: { PacketType:"group-started",battleId:string, key:string }
    GROUP_STARTED: 'group-started',
    // ns.emit()
    // data: { PacketType:"group-updated", group: GroupInfo.export() }
    GROUP_UPDATED: 'group-updated',
};