DressUp and NPCs?

On the github to DressUp it states:
 

To do:

Allow for monster models.

While this is currently possible, others seem to lose their animations if transformed into a monster.

So is there a way to use DressUp to swap to NPCs?
 

Most NPCs just use standard player models, so you would change your race and gear to match them. A few NPCs use custom models the same way monsters do, but most do not.

I've played with this some. I don't know if it's possible to do with DressUp, but it is possible in a general case.

Packet 0x051 is the PC update packet, and typically contains the armor your PC should be wearing. If you capture this packet and inject a modified 'Ranged' value of 0xFFFF, this tells XI that you're supposed to be a monster. You can modify 'Face' and 'Race' to specify which monster model to use, then trigger a PC update packet (changing visible equipment), and bam, you transform into your desired mob or special NPC.

Face represents which model ID to use, while Race is some sort of grouping (perhaps by expansion pack). Face IDs within the same Race set will eventually loop around when they get sufficiently large.For example, if there are X models in the "set", setting Face to be X+1 results in the same model as the first in a set. To reach other sets of models, increase Race.

Example Code:
 

require 'luau'
packets = require('packets')

function check_incoming_chunk(id, data, modified, injected, blocked)
  if (id == 0x051) then
    local update_packet = packets.parse('incoming', data)
    update_packet['Ranged'] = 0xFFFF
    update_packet['Face'] = 25
    update_packet['Race'] = 10
    return packets.build(update_packet)
  end
end

windower.register_event('incoming chunk', check_incoming_chunk)

Will transform you into Kumhau on the next PC update packet.

I don't know off the top of my head how to transform into any emote-capable NPCs. But I do know that Trusts are Race 12.

Face: 38, Race: 12 = Shantotto II

Face: 39, Race: 12 = Iroha

Animations that the model natively has will work just fine. So you can auto-attack and cast magic as Iroha and she'll have the right animations. But if you try to do a weaponskill for a model which doesn't have it, like Sajj'aka (Face 75, Race 10), the model will get all weird and distorted for the duration of the WS. They also do not do any emotes, they simply stand there while the /em text is sent out.

I don't know how to deduce which Face/Race values need to be used for a given mob (wish I did!). The ones I know came from randomly plugging numbers in. Although I do know that most Adoulin mobs tend to be Race 10, and most trusts tend to be Race 12.

I've played with this some. I don't know if it's possible to do with DressUp, but it is possible in a general case.

 

Packet 0x051 is the PC update packet, and typically contains the armor your PC should be wearing. If you capture this packet and inject a modified 'Ranged' value of 0xFFFF, this tells XI that you're supposed to be a monster. You can modify 'Face' and 'Race' to specify which monster model to use, then trigger a PC update packet (changing visible equipment), and bam, you transform into your desired mob or special NPC.

 

Face represents which model ID to use, while Race is some sort of grouping (perhaps by expansion pack). Face IDs within the same Race set will eventually loop around when they get sufficiently large.For example, if there are X models in the "set", setting Face to be X+1 results in the same model as the first in a set. To reach other sets of models, increase Race.

 

Example Code:
 

require 'luau'
packets = require('packets')

function check_incoming_chunk(id, data, modified, injected, blocked)
  if (id == 0x051) then
    local update_packet = packets.parse('incoming', data)
    update_packet['Ranged'] = 0xFFFF
    update_packet['Face'] = 25
    update_packet['Race'] = 10
    return packets.build(update_packet)
  end
end

windower.register_event('incoming chunk', check_incoming_chunk)

 

Will transform you into Kumhau on the next PC update packet.

 

I don't know off the top of my head how to transform into any emote-capable NPCs. But I do know that Trusts are Race 12.

Face: 38, Race: 12 = Shantotto II

Face: 39, Race: 12 = Iroha

 

Animations that the model natively has will work just fine. So you can auto-attack and cast magic as Iroha and she'll have the right animations. But if you try to do a weaponskill for a model which doesn't have it, like Sajj'aka (Face 75, Race 10), the model will get all weird and distorted for the duration of the WS. They also do not do any emotes, they simply stand there while the /em text is sent out.

 

I don't know how to deduce which Face/Race values need to be used for a given mob (wish I did!). The ones I know came from randomly plugging numbers in. Although I do know that most Adoulin mobs tend to be Race 10, and most trusts tend to be Race 12.

And thanks for the help, much appreciated.

It's far less complicated than that. Inside the packet structure is a union something like this (note, I'm writing this from memory, so the actual structure is probably not correct, but it should suffice for demonstration purposes):

union
{
    unsigned int monster;
    struct
    {
        unsigned short face;
        unsigned short race;
        unsigned short head;
        unsigned short body;
        unsigned short hands;
        unsigned short legs;
        unsigned short feet;
        unsigned short main;
        unsigned short sub;
        union
        {
            unsigned short ranged;
            unsigned short monster_flag;
        };
    };
};

When the server wants to make a character look like a monster it just does:

character.monster_flag = 0xFFFF;
character.monster = 2367; // Shinryu

If you're not familiar with how a union works in C++, basically the game can either treat the first 4 bytes as two 16-bit integers, or as one 32-bit integer as it pleases and it uses the 16-bit monster_flag value (which shares the same storage space as ranged) to decide which. The reason Iroha has a "Face" of 39 and a "Race" of 12. is because her model ID is 786471, which happens to have 12 in the top 16 bits and 39 in the lower 16 bits.