• hook packet 0xAD

Posted: **Sat Sep 23, 2006 5:32 am**

In hook packet

Packet 0xAD
{
  Length variable
  ReceiveFunction FilterSpeakingHook:HandleReceiveSpeak
}

with const:

Code: Select all

const SPEECH_PKG_OFFSET_MODE := 3;

and script:

Code: Select all

exported function HandleReceiveSpeak(who, byref packet)

  var mode := packet.GetInt8(SPEECH_PKG_OFFSET_MODE);
  if (mode == 0xc0)
    return 0; //continue to core hook functions
  endif

what is 0xc0? What means? Anyone know this?

Posted: **Sat Sep 23, 2006 11:46 am**

0xC0 is the speech.mul mode. The text comes in a wierd way when speech.mul triggers it.

[quote]
Packet ID: 0xAD
Packet Name: Unicode/Ascii speech request
Packet Size: Variable
Sent By: Client
Submitted: MuadDib

Packet Breakdown
BYTE[1] cmd
BYTE[2] length
BYTE[1] Type
BYTE[2] Color
BYTE[2] Font
BYTE[4] Language (Null Terminated)
Â· â€œenuâ€œ - United States English
Â· â€œdesâ€

Posted: **Sat Sep 23, 2006 2:14 pm**

But is a problem to read text when speech.mul is active? what does speech.mul?

Posted: **Sat Sep 23, 2006 4:36 pm**

speech.mul is used to send codes for commonly said trigger words instead of the entire word. One of the biggest problems with doing things with it though are that they are 12-bit codes. You can still parse them and use them in your scripts but its just wierd. But the packet is a bit different when sent with speech.mul vs without it.

Posted: **Sun Sep 24, 2006 12:12 am**

mm speech.mul could be used to send commands to Injection or similar?
It is a problem if I do so:

Code: Select all

  var mode := packet.GetInt8(SPEECH_PKG_OFFSET_MODE);
  if (mode == 0xc0)
    return 1; //stop packet processing
  endif

?

Posted: **Sun Sep 24, 2006 2:54 am**

no thats not the case. Speech.mul is used in just plain untouched installs of UO for OSI. This is kinda how it works...

Say you say something like:

"I wish to lock this down"

with speech.mul, it will send a small 12-bit number (12 bits is like 1 1/2 characters so its extremely small) which the OSI server uses as an easy serverside processing code for common trigger words. The client also recognizes these phrases in other languages and sends the same exact codes making it even easier for scripts to parse what was said in a multilingual environment.

Speech.mul has never been considered a cheat but its still a bit wierd to try and script out the process because the way the client formats speech.mul into the packet.