0xCC8570 - ptr to GroupInfo - Instance Group
0xCC856C - ptr GroupInfo - Home Group

struct GroupInfo
{
	public GroupMemberInfo* [40] RaidMembers; // leader is always at the top
	public GroupMemberInfo* [4] PartyMembers;
	public GroupMemberInfo*	Player;

	public uint  unknownInt_B4;
	public uint* unknownPtr_B8;
	public uint* unknownInt_BC; //  ref 0x5D74C0 WoW 5.0.5

	public uint unknownInt_C0;
	public uint GroupSize;
	public uint PartySize; // doesn't include player.
	public uint unknownInt_CC;

	public ulong GroupLeaderGuid;
	public GroupFlags Flags;
	public uint DungeonDifficultyID;

	public uint RaidDifficultyID;
	public uint unknownInt_E4;
	public uint LfgDungeonId;
	public uint unknownInt_EC;

	public uint unknownInt_F0; // this is set to 1 in the 'Home' group if there is an instance active
	public uint unknownInt_F4;
	public uint unknownInt_F8;
	public uint unknownInt_FC;

	public uint unknownInt_100;
	public uint unknownInt_104;
	public uint unknownInt_108;
	public uint unknownInt_10C;

	public uint unknownInt_110;			    // 0x110
	public uint BuffMask;            		// 0x114
	public uint BuffCount;					// 0x118
	public RaidTargetInfo* RaidTargets;   	// I am guessing this also contains buff info.

	public uint unknownInt_120;
	public uint unknownInt_124;
}

[Flag]
enum GroupFlags: byte
{
	Party = 0,
	BattleGrounds = 1,
	Raid = 2,
	RestrictedLfg, = 4   // ref Script_HasLFGRestrictions
	LFGParty, = 8
	Unknown1 = 16,
	Unknown2 = 32,
	EveryoneIsAssist = 64, // ref Script_IsEveryoneAssistant
}


struct GroupMemberInfo
{
	byte unknownByte_0;
	uint Flags;				//     0 = offline, 1 = online
	public GroupRole Roles;
	byte  unknownByte_3;

	GroupRank Rank;  // 0 if not party leader,

	// the next 4 bytes are only used in the 'Home' Groupinfo structure when there is an 'Instance' GroupInfo active
	// so theres really no reason to use them since you should be using the 'Instance' GroupInfo struct if it's active

	byte unknownByte_8;        // same as unknownByte_0
	uint Flags2;				//     0 = offline, 1 = online
	public GroupRole Roles2;
	byte  unknownByte_B;

	public ulong Guid;
	GroupInfo* Parent;
	int unknownInt_1C;

	int unknownInt_20;
	int unknownInt_24;
	int unknownInt_28;
	int unknownInt_2C;
}

enum GroupRank :byte
{
	None,
	Assistant,
	Leader,
}

[Flags]
enum GroupRole
{
	None,
	Leader,
	Tank,
	Healer = 4,
	Damager = 8
};

struct RaidTargetInfo
{
	public ulong StarGuid;
	public ulong CircleGuid;
	public ulong DiamondGuid;
	public ulong TriangleGuid;
	public ulong MoonGuid;
	public ulong SquareGuid;
	public ulong CrossGuid;
	public ulong SkullGuid;
	public uint[40] UnknownData; // no clue what this is for. might be buffs...
	GroupInfo* Parent;
}