DayZOfficialSourceCode/Scripts/3_game/client/syncplayerlist.c

class SyncPlayerList
{
	ref array<ref SyncPlayer> m_PlayerList;

	void CreatePlayerList()
	{
		if (GetGame().IsServer())
		{
			m_PlayerList = new array<ref SyncPlayer>();
			
			array<PlayerIdentity> identities = new array<PlayerIdentity>();
			GetGame().GetPlayerIndentities(identities);

			foreach (auto identity : identities)
			{
				SyncPlayer sync_player = new SyncPlayer;
				sync_player.m_Identity = identity;
				sync_player.m_UID = identity.GetPlainId();
				sync_player.m_PlayerName = identity.GetPlainName();
				m_PlayerList.Insert(sync_player);
			}
		}
	}

	static SyncPlayerList Compare(SyncPlayerList a, SyncPlayerList b)
	{
		SyncPlayerList new_list = new SyncPlayerList;
		new_list.m_PlayerList = new array<ref SyncPlayer>;

		if (!a && b && b.m_PlayerList)
		{
			foreach (SyncPlayer player3 : b.m_PlayerList)
			{
				new_list.m_PlayerList.Insert(player3);
			}
		}
		else if (a && a.m_PlayerList && !b)
		{
			foreach (SyncPlayer player4 : a.m_PlayerList)
			{
				new_list.m_PlayerList.Insert(player4);
			}
		}
		else if (a && a.m_PlayerList && b && b.m_PlayerList)
		{
			array<ref SyncPlayer> array_a = a.m_PlayerList;
			array<ref SyncPlayer> array_b = b.m_PlayerList;

			foreach (SyncPlayer player : array_b)
			{
				bool found = false;
				foreach (SyncPlayer player2 : array_a)
				{
					if (player.m_UID == player2.m_UID)
					{
						found = true;
						break;
					}
				}

				if (!found)
				{
					new_list.m_PlayerList.Insert(player);
				}
			}
		}
		return new_list;
	}
}