Help to determine packet in BMS'Leak .Idb

[Kyber]

Hi, i'm look into BMS'Leak server files to read and undertand the way nexon handle things in Server side, but there in an packet i cannot undertand in CUSkill:oActiveSkill_Summon method
Can anyone help me to determine what packet (header: 25 or 0x19) is in this method? Look like it will send after Summoned created successful. I was tried to compare with send headers of GMS v62, but still couldn't found what it is.

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[Chikn]

Apply change stats packet?

 

[Kyber]

Apply change stats packet?

You mean UPDATE_STAT packet? i don't think so, cause the above method: CUser::SendCharacterStat was did it

 

[Chikn]

Dunno what wrong with my eyes :$: User effect packet then

 

[Yuuroido]

COutPacket::COutPacket(&oPacket, 25, [B]1[/B]);

The last byte '1' tells it's loopback packet. So most likely it's in ~OnPacket.

CUser::OnPacket

case 0x19:
        CUser::OnUserEffect(this, iPacket);
        break;

Oh, it was UserEffect packet as Chikn said. (in this case, it's for remote users to show skill effect)

 

[Kyber]

COutPacket::COutPacket(&oPacket, 25, [B]1[/B]);

The last byte '1' tells it's loopback packet. So most likely it's in ~OnPacket.

CUser::OnPacket

case 0x19:
        CUser::OnUserEffect(this, iPacket);
        break;

Oh, it was UserEffect packet as Chikn said. (in this case, it's for remote users to show skill effect)

Thank you guys <3

 

[Kyber]

did anyone know what is this packet?? and did it exists in GMS version (v0.62)? @Chikn @Yuuroido

COutPacket::COutPacket(&thisa, 24, 1);
LOBYTE(v12) = 2;
COutPacket::Encode4(&thisa, dwFieldID);
v9._m_pStr = 0;
ZXString<char>::operator=(&v9, &sPortal);
COutPacket::EncodeStr(&thisa, v9);
COutPacket::Encode1(&thisa, 0);
COutPacket::Encode1(&thisa, 0);
COutPacket::Encode1(&thisa, 0);
COutPacket::Encode1(&thisa, 0);
CUser::SendPacket(v4, &thisa);

It look like an packet to warp player to another map, but can't found this packet in GMS version. If i'm not wrong, GMS only using CStage::OnSetField to warp player, right?

P/s: nvm, i found it. Thank you guys <3

 

[Eric]

i'm loving all these nexon names and references <3

just curious, are you making a nexon-replica emulator as well Kyber? or is this just to further better name/fix current packets and functionality of Odin

yes OnSetField is the only way you warp players to entirely different maps (for all versions and regions alike). assuming you know this since you found it, just remember if bLoopback is true, go to CUser::OnPacket and scroll to the bottom. at the bottom is an } else { condition with a second switch, this switch is for all the loopback opcodes. you can convert them to decimal if they aren't already (click on a condition and press H to switch between dec/hex) to easily find any loopback packet relating to the user.

 

[Kyber]

just curious, are you making a nexon-replica emulator as well @Kyber? or is this just to further better name/fix current packets and functionality of Odin

-Yes, i'm making a nexon-replica emulator but in java with java 8, not C++, and ofcouse i also make all the method and variable naming like as nexon too :

yes OnSetField is the only way you warp players to entirely different maps (for all versions and regions alike). assuming you know this since you found it, just remember if bLoopback is true, go to CUser::OnPacket and scroll to the bottom. at the bottom is an } else { condition with a second switch, this switch is for all the loopback opcodes. you can convert them to decimal if they aren't already (click on a condition and press H to switch between dec/hex) to easily find any loopback packet relating to the user

-on the first time, I thought that packet will send to the client, but i has realized that it is a loopback packet (thanks to @Yuuroido), that send back to server and trace throught CUser::OnPacket : after that, i was found the packet 0x24 is: CUser::OnTransferFieldRequest, and in this function will sending a packet called CUser::SendSetFieldPacket to warp player :

 

[sunnyboy]

-Yes, i'm making a nexon-replica emulator but in java with java 8, not C++, and ofcouse i also make all the method and variable naming like as nexon too :
:

Been there, done that and it was pretty fun.