OTClient problem with receive opcodes

[Tibia Idle]

I can’t receive the opcode from the server in OTClient, please help. This is what my code looks like. In the OTClient console it of course displays “OPCODE MODULE START,” but the second message about receiving the opcode doesn’t appear.

on otclient:

function init()
    print("OPCODE MODULE START")


    ProtocolGame.registerExtendedOpcode(90, opcoderead)
end


function opcoderead(protocol, opcode, buffer)

    print("opcode from server")

end

on tfs

function onSay(player, words, param)

        player:sendExtendedOpcode(90, "Test opcode")


    return true
end

Post automatically merged: May 2, 2025

omg. fixed ;p

 

[Sorky]

I can’t receive the opcode from the server in OTClient, please help. This is what my code looks like. In the OTClient console it of course displays “OPCODE MODULE START,” but the second message about receiving the opcode doesn’t appear.

on otclient:

function init()
    print("OPCODE MODULE START")


    ProtocolGame.registerExtendedOpcode(90, opcoderead)
end


function opcoderead(protocol, opcode, buffer)

    print("opcode from server")

end

on tfs

function onSay(player, words, param)

        player:sendExtendedOpcode(90, "Test opcode")


    return true
end

Post automatically merged: May 2, 2025

omg. fixed ;p

looks good to me

 

[Tibia Idle]

the problem is not solved. why my otcleint does not respond to the received opcode?

 

[Dakos]

features.lua enable opcodes here

 

[Sorky]

the problem is not solved. why my otcleint does not respond to the received opcode?

you mean you sending something to the server?

OtClient
g_game.sendExtendedOpcode(opcode, data)

and handling is in fuction
void ProtocolGame:arseExtendedOpcode(NetworkMessage& msg)

 

[Mateus Robeerto]

Did you add JSON support to the data/lib folder? And did you enable the opcodes via OTClient, specifically in data/modules/game_feature/feature.lua? If not, you need to add JSON support so that both opcodes work properly. Alternatively, you can use Kondra's OTC detection system, which also works well with JSON. Also, you didn't mention the version of your TFS and its mechanics.

If you don't have JSON, just download Oen's JSON library and add it to your server

Post in thread '[TUTORIAL MODS]- Creating Modules with Extended Opcode'

Apr 22, 2020

Because extended op codes are accepting only strings, using JSON is very helpful to send more data.
Download and drop json.lua file into otclient/modules/corelib, then open corelib.otmod in that folder and after

    dofile 'outputmessage'

add

    dofile 'json'

Now go to forgottenserver\data\lib\core and drop that file there, open core.lua and add

dofile('data/lib/core/json.lua')

Usage:
In OTC modules

function sendMyCode()
    local myData = {
        a = "string",
        b = 123,
        c = {
            x = "string in table"...

• oen432

• 
• 
• 

OTCv8 detection

OTCv8 detection, custom features packet, bigget packet size and bug f… · OTCv8/forgottenserver@2839d4d

…ix for rsa reader

github.com

 

[Tibia Idle]

Thank you all for the help. Now everything is clear.