LuaDoString

[fvicaria]

Hi guys,
I know this has been discussed a lot but after looking old posts and comparing to my code I could find no obvious reason why this is not working:

I tried to keep the code as simple as possible.


When I run for example: LuaDoString("DoEmote(\"Dance\")")
I get nothing. No crashes or dancing.

Have I missed anything or is this supposed to work only via EndScene?

        public void LuaDoString(string command)
        {
            // Offset:
            uint FrameScript__Execute = 0x43C010;

            // Allocate memory
            var args = Memory.AllocateMemory(Encoding.UTF8.GetBytes(command).Length + 1);
            var codecave = Memory.AllocateMemory(0x3332);

            // Write value:
            Memory.WriteBytes(args, Encoding.UTF8.GetBytes(command));

            try
            {
                // Write the asm stuff for Lua_DoString
                Memory.Asm.Clear();
                Memory.Asm.AddLine("mov eax, " + args);
                Memory.Asm.AddLine("push 0");
                Memory.Asm.AddLine("push eax");
                Memory.Asm.AddLine("push eax");
                Memory.Asm.AddLine("mov eax, " + ((uint)Memory.MainModule.BaseAddress + FrameScript__Execute));
                Memory.Asm.AddLine("call eax");
                Memory.Asm.AddLine("add esp, 0xC");
                Memory.Asm.AddLine("retn");

                // Inject
                Memory.Asm.InjectAndExecute(codecave);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.StackTrace);
            }
            finally
            {
                // Free memory allocated
                Memory.FreeMemory(codecave);
                Memory.FreeMemory(args);
            }
        }

[Master674]

Execute it in WoW's mainthread.

You could write a function that Injects your code and remote executes it and then removes the detour instead of creating a new thread or whatever (I don't know what InjectAndExecute is).

[streppel]

in wow you either have to hook endscene or update the local object manager(was sth like this, but not sure exactly as im not in wow) yourself for this to work.
look in other threads here on ownedcore that handle dostring via createremotethread(this is what blackmagic does)

[fvicaria]

Hi guys,

I see what you mean...
But the method should work as is since I have another one that calls GetObjectName using exactly the same technique that works fine.

I have two other ways to do this so no big deal but I am annoyed because it shows that there is something else to it that I can't see.

Thanks!

[xalcon]

But the method should work as is since I have another one that calls GetObjectName using exactly the same technique that works fine.

Nope. The Lua_LoadString() function is a special one. The function can only be called inside the Main-Thread of Wow, where the rendering is done.
Try this one, it is working realy well:
http://www.ownedcore.com/forums/worl...lackmagic.html ([Sample Code] EndScene Hook with ASM and blackmagic)

[fvicaria]

Hey xalcon,
I have been trying the implementation from RivalFr but I get exactly the same bahaviour.
I cal LuaDoString with a simple Emote but nothing happens.

Just like before.

I am pretty sure all the offsets are correct.

Has anything else change since?

Thanks a lot.

[xalcon]

Well, you have copy'n'pasted the whole code into you project, edited the offsets and then ran it, do you?

First of all: Don't copypasts stuff when you don't understand how it is working. When you are not able to understand some kind of stuff, you want to use, then you have to learn it.

I think I know where you problem is... it is called the wow base address. But I might be wrong since I don't know your code.