Taxi Info

[Apoc]

I've been messing around with the 'taxi' stuff in WoW. (Flight paths, boats, zeps, etc.)

Basically trying to re-reverse what I had done a while ago, to find which flightpaths you currently know. Since I honestly haven't bothered updating since 3.1.x series of patches, nearly all of it has changed.

For the lazy; here's a few addrs that should help speed up the reversing process.

00C0D7E4 NumTaxiNodes (Only set after visiting a FP. This will be the number of visible nodes in the window)
00C0D7E8 - Some ID? Not sure.
00C0D7EC CurrentTaxiNodeRecord - Points to the current TaxiNodes record for the FP you're at.
00C0DBF0 CurrentTaxiNpcGuid (Just the GUID of the current Taxi NPC [if there is one])
00C0DC38 Pointer/Array of info for taxis.

The pointer/array for infos seems to be a struct; I've just started reversing it, but here it is so far:

#pragma pack(push, 1)
struct TaxiInfo
{
  TaxiNodeRecord *NodeRecord;
  DWORD dword4;
  DWORD dword8;
  BYTE byteC;
  BYTE byteD_IsFlightPath;
  BYTE byteE;
  BYTE byteF;
  QWORD *dword10_KnownNodes;
  DWORD dword14;
  DWORD dword18;
  DWORD dword1C;
  DWORD dword20;
  DWORD dword24;
  DWORD dword28;
  DWORD dword2C;
};
#pragma pack(pop)

I'm honestly tired as hell, and I've made little to no progress. Help would be appreciated.

[Nesox]

I would help you if i was home, i'm back on sunday

[XTZGZoReX]

You can intercept SMSG_SHOWTAXINODES (0x1A9), or just reverse from its handler (if you dislike messing with the protocol). It's sent when you interact with a taxi master, and contains a list of nodes you know (I recommend looking at MaNGOS code for the specifics). The structure goes like so:

uint32 something; // probably 1 for success, 0 for error, or whatever (didn't really check)
uint64 guidOfTaxiMaster;
uint32 currentNode;
for (uint32 i = 0; i < 12; i++)
{
    uint32 node;
}

[Apoc]

Basically; I'm looking for the known taxi node IDs. I know in previous patches it was simply stored in a list of QWORDs where each bit was the ID of the node. (1 for known, 0 for not)

It's fairly obvious that they're sent to the client, either at login, or shortly after. (Otherwise the client has no way of knowing what FPs are shown and not, to show the green '!' or not)

[namreeb]

Is that how it's done? A comprehensive FP list at login? I would think it would just be a flag specifying what icons to render above the toon as it is announced to the client or something. This would of course allow you to determine if someone is a flight master, but only when you are in range of them.

[Jadd]

Isn't this possible to do through Lua?

for i = 1, NumTaxiNodes() do
    print(TaxiNodeName(i).." - "..TaxiNodeGetType(i));
end

For me, this prints:

Thunder Bluff, Mulgore - REACHABLE
Orgrimmar, Durotar - CURRENT
Crossroads, The Barrens - REACHABLE

Etc.

[-Ryuk-]

Isn't this possible to do through Lua?

for i = 1, NumTaxiNodes() do
    print(TaxiNodeName(i).." - "..TaxiNodeGetType(i));
end

For me, this prints:

Thunder Bluff, Mulgore - REACHABLE
Orgrimmar, Durotar - CURRENT
Crossroads, The Barrens - REACHABLE

Etc.

Yep, However I think he wants it in bytes so he can read just one byte to see if he has the Stormwind City Flight Path(for example), without having to split the string.

[TOM_RUS]

It's fairly obvious that they're sent to the client, either at login, or shortly after. (Otherwise the client has no way of knowing what FPs are shown and not, to show the green '!' or not)

List of known nodes IS ONLY sent when you interact with a taxi master. Green '!' is other story (hint: CMSG_TAXINODE_STATUS_QUERY, SMSG_TAXINODE_STATUS).

[Jadd]

List of known nodes IS ONLY sent when you interact with a taxi master. Green '!' is other story (hint: CMSG_TAXINODE_STATUS_QUERY, SMSG_TAXINODE_STATUS).

Oh yeah, you're right. Didn't notice this.

Guess my Lua option fails :P

[tymezz]

It's fairly obvious that they're sent to the client, either at login, or shortly after. (Otherwise the client has no way of knowing what FPs are shown and not, to show the green '!' or not)

Unit+0x94 = 7 when there is an available taxi node (green !), didn't reverse further but it might be of some help.

Though I doubt it.. the value for a new node may have changed since 3.3.5.