What function determines what the mouse icon should be? (trying 2 find interact dist)

[Tanaris4]

All-

I've been poking around in the OS X 5.0.1 binary mainly to find a function that would relate to updating the mouse icon (as the game updates it if you are close enough to interact with a game object, and I'm trying to determine that distance).

I've noticed there is a AutoMouseOverProc function (windows 16357: 5941A0, rebased) but can't actually get to a "update mouse icon" function.

Anyone have any ideas where I should look next? Searching for combinations of function names with mouse and icon is kind of failing me.

~ Tanaris

[Jadd]

CGWorldFrame::CursorTrackUnit seems to check which graphic it should use, and CursorSetMode and CursorSetFile seem to set the actual graphic.

Hope this helps!

[~Unknown~]

I asked this question awhile back in this thread here: http://www.ownedcore.com/forums/worl...-distance.html (Game object interact distance)

I'm not sure if it is any help to you or not. I didn't actually end up with the answer I was looking for either. Let me know if you could if you do end up finding it.

[Apoc]

Units...

        public override float InteractRange        {
            get
            {
                // TODO: Figure out correct IsWithinInteractRange in WoW


                if (Entry == 13158) // Lieutenant Sanders - he's hanging from a tree and it bugs O.o
                    return 5f;
                // Agatha - undead 'talk to me to start doing anything' NPC. YOu need to talk to her to 'stand up' from being dead when you first start.
                // She's just out of normal range for us.
                if (Entry == 49044)
                    return 6f;


                return CombatReach + 2.0f;
            }
        }

GO's

        public override float InteractRange
        {
            get
            {


                return SubObj != null ? SubObj.InteractDistance - 0.25f : 4f;
            }
        }

InteractDistance is just SubObj+0xC

[Tanaris4]

So I actually tried that (JuJu told me about it) but it wasn't working for a crystal that literally has an interact distance of 30 (it's in the starting draenei area). Calling the function to get the distance worked fine, and of course OOP it would be near impossible as it gets a bunch of information on the CM2Models before calculating it.

[zys924]

Units...

        public override float InteractRange        {
            get
            {
                // TODO: Figure out correct IsWithinInteractRange in WoW


                if (Entry == 13158) // Lieutenant Sanders - he's hanging from a tree and it bugs O.o
                    return 5f;
                // Agatha - undead 'talk to me to start doing anything' NPC. YOu need to talk to her to 'stand up' from being dead when you first start.
                // She's just out of normal range for us.
                if (Entry == 49044)
                    return 6f;


                return CombatReach + 2.0f;
            }
        }

GO's

        public override float InteractRange
        {
            get
            {


                return SubObj != null ? SubObj.InteractDistance - 0.25f : 4f;
            }
        }

InteractDistance is just SubObj+0xC

Mind if telling me what exactly is a "Sub Obj"? I know it has sth to do with bobber like stuffs.

[~Unknown~]

Units...

        public override float InteractRange        {
            get
            {
                // TODO: Figure out correct IsWithinInteractRange in WoW


                if (Entry == 13158) // Lieutenant Sanders - he's hanging from a tree and it bugs O.o
                    return 5f;
                // Agatha - undead 'talk to me to start doing anything' NPC. YOu need to talk to her to 'stand up' from being dead when you first start.
                // She's just out of normal range for us.
                if (Entry == 49044)
                    return 6f;


                return CombatReach + 2.0f;
            }
        }

GO's

        public override float InteractRange
        {
            get
            {


                return SubObj != null ? SubObj.InteractDistance - 0.25f : 4f;
            }
        }

InteractDistance is just SubObj+0xC

Hmm, I looked at this function in disassembly and it makes sense sort of. I'm wondering if the accuracy is off for some objects or its a different interact range. For example, this function gives 5 yards as range for mailboxes, but I can easily stand at 5.5 and open it. perhaps I'm misunderstanding the function or screwed up somewhere

[JuJuBoSc]

Hmm, I looked at this function in disassembly and it makes sense sort of. I'm wondering if the accuracy is off for some objects or its a different interact range. For example, this function gives 5 yards as range for mailboxes, but I can easily stand at 5.5 and open it. perhaps I'm misunderstanding the function or screwed up somewhere

0044B2E0 CGGameObject_C_SubObj__CheckRange

This is what you are looking for, but require some work to get it working on by memory reading.

[Tanaris4]

Sorry for bumping an old thread, but how do I actually determine a SubObj? Once I have a GameObject, I'm not sure how to find it's sub objects.

Poking around in the mac binary as well as cheat engine and not getting very far.

Thanks in advance!

Edit: I believe it's [baseaddress + 0x1B4] based on what i found in cheat engine.. curious if anyone can tell me something more solid (function reference?)

[Empted]

You can try to search for VMT in the object's dump. Try scanning for pointer that points to the same place for all other objects of this type and also there are function pointers with narrow range. I'm sure this method will find you all sub objects. Once you found them all, it won't be hard to guess which one is needed.

P.S. check object's [VMT+0x94] function, almost sure it returns interact distance (from Script_CheckInteractDistance), can't check though, since servers are down. Will update later.

[Tanaris4]

So don't judge me on this one, but how do I dump a list of an object's VMT functions? I've never had a need for it before :/

Looks like i'm trying to find either CGGameObject_C::GetInteractDistanceSquared or CGGameObject_C_TypeBase::GetInteractDistance

Edit: Those functions are just what Apoc posted, shux. The issue i'm running into is that yes, the interact distance is in those functions + his example, but sometimes you can't get that close to the object. So then you also need to know the maximum range. For example: http://www.wowhead.com/object=181433

Looks like I need to reverse that CheckRange function /tear

[Empted]

So what I've got:
To dump VMT functions you read VMT pointer (first 4 bytes of the object) and read [VMT+i*4] in cycle. I've wrote some simple snippet to get all sub objects:

            Dictionary<uint, int> subObjs= new Dictionary<uint, int>();
            int wowTextEnd = (int)ai.wow.MainModule.BaseAddress + 0x8a0000; // .text section size
            int wowTextStart = (int)ai.wow.MainModule.BaseAddress + 0x1000;
            foreach (KeyValuePair<ulong, GameObject> pair in ObjectManager.GameObjectList)
            {
                for (uint i = 0; i < 166; i++) // 166*4 bytes is approximate game object size, got it by substracting base addresses of adjacent objects
                {
                    try
                    {
                        uint VMT = ai.wow.ReadUInt(ai.wow.ReadUInt(pair.Value.BaseAddress + i * 4)); // read [base+offset] to get object address, then [object] to get VMT
                        int pointer1 = ai.wow.ReadInt(VMT); //read two function (probably) pointers
                        int pointer2 = ai.wow.ReadInt(VMT + 0x4);
                        if (pointer1 < wowTextStart || pointer1 > wowTextEnd) continue; //they must be in the .text segment
                        if (pointer2 < wowTextStart || pointer2 > wowTextEnd) continue;
                        uint objectOffset= 4 * i;
                        if (subObjs.ContainsKey(objectOffset))
                            subObjs[objectOffset]++;
                        else
                            subObjs.Add(objectOffset, 1);
                    }
                    catch
                    {
                        continue; //get rid of read fail exceptions
                    }
                }
            } 

Scanned many game objects and got some pointers to sub objects (for sure) at: [base+8] [base+32] [base+52] [base+192] [base+220] [base+436]
So you were right, sub object with interact distance is at [base+0x1B4] (0x1b4=436) . Made a break point at (sub+0xC), got function that returns 0 if player cannot interact with object, 1 otherwise. Also it's accurate (checked ingame).
Also, it's [VMT+8*4] (sub object's VMT). I think it's just the same function JuJuBoSc told about. Going to try reversing it by myself, but a bit later, will update if i'll succeed.