Inventory Slot Number reading

[guizmows]

hi every body.

I try for 2 days to read items and containers.
I have a big problems with reading container slot number and I can't find why.

here is what I do :

public enum ContainerFields : uint
        {
            CONTAINER_FIELD_NUM_SLOTS = 0x6,
            CONTAINER_ALIGN_PAD = 0x7,
            CONTAINER_FIELD_SLOT_1 = 0x8,
            TOTAL_CONTAINER_FIELDS = 0x3
        }

object manager :

uint type = ReadUInt(curObj + (uint)MemEnums.ObjectFields.OBJECT_FIELD_TYPE); // curObj + 0x14

switch (type)
                            {
                                case (uint)MemEnums.ObjectType.ITEM:  // item
                                    ReadItem(curObj, type);
                                    break;
                                case (uint)MemEnums.ObjectType.CONTAINER:
                                    ReadContainer(curObj, type);
                                    break; // container
                                case (uint)MemEnums.ObjectType.NPC: // mob                           
                                    ReadMonster(curObj, type);
                                    break;
                                case (uint)MemEnums.ObjectType.PLAYER: // player, possibly me
                                    ReadPlayer(curObj, type);
                                    break;
                                case (uint)MemEnums.ObjectType.GAMEOBJECT: // stools, chairs, etc
                                    ReadGameObject(curObj, type);
                                    break;
                            }

Container slot reading :

uint slot =(uint) ReadUint(curObj + (uint)MemEnums.ContainerFields.CONTAINER_FIELD_NUM_SLOTS *4 );

In my case this should return 16, but it returns a very by number.



If someone can help me I'll be glad.

[MaiN]

The descriptor is wrong, you can find the correct slot count in DBItemCache.
Reverse lua_GetContainerNumSlots.

[rootguy]

i use these for containers:

CONTAINER_FIELD_NUM_SLOTS = 0x40,
CONTAINER_ALIGN_PAD = 0x41,
CONTAINER_FIELD_SLOT_1 = 0x42,
TOTAL_CONTAINER_FIELDS = 0x3

also you can't just add the descriptor to the object pointer.
Ofcourse i dont know how your ReadContainer function works.
Oh the horror of not being inside the process. Why do it the hard way anyway.
You really should learn and read a lot more though.

[guizmows]

thx these descriptors. I tried to reverse this lua function but I can't find the correct descriptor.

[MaiN]

thx these descriptors. I tried to reverse this lua function but I can't find the correct descriptor.

It's not in the descriptors.
Actually I found it's a virtual function. The virtual function accesses the DBItemCache to find the slot count.
It's really simple to follow in the function.

push    eax
call    GetBagAtIndex
add     esp, 4
push    edx             ; filter
push    eax             ; guid
call    ClntObjMgrObjectPtr
add     esp, 14h
test    eax, eax
jz      short loc_55F5BF

Obviously a check to see if it found the container in the object manager - if it doesn't jump, this is reached:

mov     edx, [eax]
mov     ecx, eax
mov     eax, [edx+24h]
call    eax

It doesn't get easier than this for you.

[guizmows]

yes thanks for this.

[rootguy]

I think it is in the descriptors.
CONTAINER_FIELD_NUM_SLOTS gives me the nr of slots for a container object.
I use it in my function to get the container and slot an item is in to autoequip it.

WOWContainer* WOWObjectManager::GetItemSlotAndBag(const char* item_name, unsigned long& bagslot) {
	int item_id = GetItemIDByName(item_name);
	if(!item_id)
		return 0;
	
	if(!IsValid()) {
		return 0;
	}
	
	WOWObject* obj = FirstObject();
	WOWLocalPlayer* me = GetLocalPlayer();
	WOWObject* item = 0;
	
	while(obj && ((unsigned long)obj & 1) == 0) {
		if(obj->Type() == WOWOBJECT_ITEM) {
			if(obj->GetKnownField<unsigned long>(OBJECT_FIELD_ENTRY) == item_id) {
				item = obj;
				break;
			}
		}
		
		obj = obj->Next();
	}
	
	if(item->IsValid()) {
		// Is it in the main backpack?
		unsigned long backpack_slots = 16;
		unsigned long bslot = 0;
		for(unsigned long i=0;i<backpack_slots;i++, bslot++)
		{
			u_int64_t iguid = me->GetKnownField<u_int64_t>(PLAYER_FIELD_PACK_SLOT_1 + (2*i));
			if(iguid == item->Guid()) {
				bagslot = bslot + EQUIP_NonEquipSlot;
				return me->GetContainer();
			}
		}
		// Loop through all other equipped bags
		for(unsigned long i=0;i<4;i++)
		{
			WOWContainer* ibag = GetObjectByGUID(me->GetKnownField<u_int64_t>(PLAYER_FIELD_INV_SLOT_HEAD+((EQUIP_Bag1+i) *2)))->GetContainer();
			if(ibag->IsValid()) {
				bslot = 0;
				for(unsigned long a = 0;a<ibag->GetKnownField<unsigned long>(CONTAINER_FIELD_NUM_SLOTS);a++, bslot++)
				{
					u_int64_t iguid = ibag->GetKnownField<u_int64_t>(CONTAINER_FIELD_SLOT_1 + (2*a));
					if(iguid == item->Guid()) {
						// Item and bag found!
						bagslot = bslot;
						return ibag;
					}
				}
			}
		}
	}
	
	return 0;
}