[Question] Finding function paramaters 2.4.3 (BC)

[prospectingemu]

Hey guys,

I'm working on a bot for BC client, So far i've hooked the endscene (for some reason it doesn't work on windows 8 though, and dll must be attached at startup) and have call doString with this.

(Thanks to SKU for helping me get this far)

 
typedef int(__cdecl *tDoString)(char const*, char const*);
tDoString originalDoString = reinterpret_cast<tDoString>(0x00706C80);

Now im trying to get 'click to move' working via the function call. I found the function here 0x00612A90 and using the page here Click To Move - WoWDev attemped to get it to work.

ive defined it like this

 typedef int(__cdecl *clickToMove)(float, float, float, float, INT, long, float, float, float);
clickToMove originalClickToMove = reinterpret_cast<clickToMove>(0x00612A90);

But all attempts to call it (even from the main thread, although I'm pretty sure this function is threadsafe) have resulted in a crash.

[xalcon]

lol.. do you even understand what they wrote there or did you just copy everthing? Your ctm signature is just wrong. It looks like you've tried copying the memory structure and trying to invoke it like a function

Memory Click To Move Block by By Malu05 - 2007
Offset		Type	Description		Additional Details
0x0 =		float	?			?
0x4 =		float	TURN_SCALE		Value determining the scale of the turn (only when turning more than 180 degrees?),
0x8 =		float	?			?
0xC = 		float	INTERACTION_DISTANCE	Value determining how far from the targeted position the player should stop.
0x1C = 	INT	ACTION_TYPE		The action trigger. See details about Action Type Below.
0x20 = 	8int	InteractGUID
0x74 =		float	X move to
0x78 =		float	Y move to
0x7C =		float	Z move to

THIS is a struct, not a function signature... and just look at the numbers on the left... they arent just for fun. They are the offsets into the struct because all values in between are mostly unknown or not important.

The ctm call is (at least in 5.4.7+) a thiscall and I doubt it has changed much since CTM got implemented into the game.
I'm using the following definition

[UnmanagedFunctionPointer(CallingConvention.ThisCall)]
public delegate bool CGPlayer_C__ClickToMoveDelegate(IntPtr thisPlr, ClickToMoveType type, ulong* GUID, WoWPosition* clickPos, float precision);

which should translate to something like this (I'm not a C++ coder so this might be wrong!)

typedef bool(__thiscall *clickToMove)(CGPlayer_C* playerPtr, int type, long long* GUID, WOWPOS* position, float precision);

I dont know about the offset though, you might want to take a look into my CTM Tutorial. http://www.ownedcore.com/forums/worl...icktomove.html ([HowTo] Find ClickToMove)

[prospectingemu]

Yeah you're right I assumed I was looking at the function paramaters not a struct. Thanks for your calling convention i'll take a closer look and try to get it figured.

How do you find the function definitions? Im trying to find/follow so guides but there is nothing with an example as complex/big as this CTM one

[xalcon]

The function definition was just posted several hundred times in this board - also with some asm knowledge you can look into IDA and just reverse the function itself. Shouldnt be hard.

[Corthezz]

Lookup how the functions calling convention stores parameter and then grab them via OllyDBG and a breakpoint at the function?