public static void CreatePlayerGroup(int groupLeaderID, int firstMemberID) // creates a group of players
        {
            CharacterGroup group = new CharacterGroup(GroupType.Player, groupLeaderID, firstMemberID);

            group.SendGroupMessage("You have formed a group.");
            PC pc = PC.GetOnline(groupLeaderID);

            if (pc != null)
            {
                pc.Group = group;
            }
            pc = PC.GetOnline(firstMemberID);
            if (pc != null)
            {
                pc.Group = group;
            }
        }
        public static bool AcceptPlayerGroupInvite(Character ch, int groupLeaderID)
        {
            CharacterGroup group = GetPlayerGroupByGroupLeaderID(groupLeaderID);

            if (group != null)
            {
                if (group.GroupMemberIDList.Count >= MAX_GROUP_SIZE)
                {
                    ch.WriteToDisplay("The group is full.");
                    return(true);
                }
                else
                {
                    group.GroupMemberIDList.Add(ch.UniqueID);
                    group.SendGroupMessage(ch.Name + " has joined the group.", ch.UniqueID);
                    ch.Group = group;
                    ch.WriteToDisplay("You have joined the group.");
                    return(true);
                }
            }
            return(false);
        }