[3.3.5] SMSG_ATTACKER_STATE_UPDATE structure

[ariel-]

Description: SMSG_ATTACKER_STATE_UPDATE packet structure is wrong for 3.3.5 sniffs and does not match TrinityCore structure.

Current (wrong):

            var hitInfo = packet.ReadInt32E<SpellHitInfo>("HitInfo");
            packet.ReadPackedGuid("AttackerGUID");
            packet.ReadPackedGuid("TargetGUID");
            packet.ReadInt32("Damage");
            packet.ReadInt32("OverDamage");

            var subDmgCount = packet.ReadByte();
            for (var i = 0; i < subDmgCount; ++i)
            {
                packet.ReadInt32("SchoolMask", i);
                packet.ReadSingle("Float Damage", i);
                packet.ReadInt32("Int Damage", i);

                if (hitInfo.HasAnyFlag(SpellHitInfo.HITINFO_PARTIAL_ABSORB | SpellHitInfo.HITINFO_FULL_ABSORB))
                    packet.ReadInt32("Damage Absorbed", i);

                if (hitInfo.HasAnyFlag(SpellHitInfo.HITINFO_PARTIAL_RESIST | SpellHitInfo.HITINFO_FULL_RESIST))
                    packet.ReadInt32("Damage Resisted", i);
            }
...

Expected (correct):

            var hitInfo = packet.ReadInt32E<SpellHitInfo>("HitInfo");
            packet.ReadPackedGuid("AttackerGUID");
            packet.ReadPackedGuid("TargetGUID");
            packet.ReadInt32("Damage");
            packet.ReadInt32("OverDamage");

            var subDmgCount = packet.ReadByte();
            for (var i = 0; i < subDmgCount; ++i)
            {
                packet.ReadInt32("SchoolMask", i);
                packet.ReadSingle("Float Damage", i);
                packet.ReadInt32("Int Damage", i);
            }

            if (hitInfo.HasAnyFlag(SpellHitInfo.HITINFO_PARTIAL_ABSORB | SpellHitInfo.HITINFO_FULL_ABSORB))
            {
                for (var i = 0; i < subDmgCount; ++i)
                    packet.ReadInt32("Damage Absorbed", i);
            }


            if (hitInfo.HasAnyFlag(SpellHitInfo.HITINFO_PARTIAL_RESIST | SpellHitInfo.HITINFO_FULL_RESIST))
            {
                for (var i = 0; i < subDmgCount; ++i)
                    packet.ReadInt32("Damage Resisted", i);
            }
...

[ennioVisco]

Do you have any reference about the correct behavior? Maybe a sniff?

[ariel-]

There's a sniff on the repo which showcases the behaviour, also TrinityCore's own code showing the packet real structure (I don't change the WPP code myself because it has some version conditionals thrown around)

here specifically: https://github.com/TrinityCore/TrinityCore/blob/a93d74c8df26e836211092aaf79d0c199d25decc/src/server/game/Entities/Unit/Unit.cpp#L5460-L5488