[asherkin]

EDIT: I stopped working on this in favour of a better method provided by AzuiSleet, hope to have a release soon
EDIT2: It Works, Ship It.

I decided to have a first attempt at MM:S coding today, tried a few things, converted an old CS:S plugin over to TF2, etc. I decided to convert one of my SM plugins to MM:S as some features I want to add would require a SM Extension, so I just decided to go the whole way . But I'm having some issues editing the player's weapon's m_iEntityQuality. The edit of m_iHealth works fine, but editing m_iEntityQuality has no effect, I think I may have messed up on either getting the entity for the weapons in each slot or using the entity of find the offset of m_iEntityQuality.

Edit: My offset for Weapon_GetSlot may also be outdated. I got it from the Wiki, matches here though.

Relevant Code:

bool SpawnhealthPlugin::FireEvent_Handler(IGameEvent *event, bool bDontBroadcast)
{
	if (!event || !event->GetName())
		RETURN_META_VALUE(MRES_IGNORED, false);

	const char *name = event->GetName();
	
	if (strcmp(name, "player_spawn") == 0)
	{
		int userid = event->GetInt("userid");
		edict_t *pEntityEdict = m_Engine->PEntityOfEntIndex(userid-1);
		if(pEntityEdict)
		{
			if(strcmp(pEntityEdict->GetClassName(),"player") == 0)
			{
				CBaseEntity *pEntity = pEntityEdict->GetUnknown()->GetBaseEntity();
				sm_sendprop_info_t propInfo;
				if (FindSendPropInfo("CTFPlayer", "m_iHealth", &propInfo))
				{
					/* Use the offset and our CBaseEntity as a base to find the prop pointer */
					int *m_iHealth = (int *)(((unsigned char *)pEntity) + propInfo.actual_offset);
					*m_iHealth += 100;
				}
			}
		}
	} 
	else if (strcmp(name, "inventory_updated") == 0)
	{
		int userid = event->GetInt("userid");
		edict_t *pEntityEdict = m_Engine->PEntityOfEntIndex(userid-1);
		if(pEntityEdict)
		{
			if(strcmp(pEntityEdict->GetClassName(),"player") == 0)
			{
				CBaseEntity *pEntity = pEntityEdict->GetUnknown()->GetBaseEntity();
				for (int i = 0; i < 8; i++) {
					CBaseCombatWeapon *pWeapon = Weapon_GetSlot(pEntity, 1);
					sm_sendprop_info_t propInfo;
					if (FindSendPropInfo("CTFWeaponBase", "m_iEntityQuality", &propInfo))
					{
						/* Use the offset and our CBaseEntity as a base to find the prop pointer */
						int *m_iEntityQuality = (int *)(((unsigned char *)pWeapon) + propInfo.actual_offset);
						*m_iEntityQuality = 6;
					}
				}
			}
		}
	}

//	META_LOG(g_PLAPI, "FireGameEvent called: name=%s", name); 

	RETURN_META_VALUE(MRES_IGNORED, true);
}

CBaseCombatWeapon *SpawnhealthPlugin::Weapon_GetSlot(CBaseEntity *pThisPtr, int slot)
{
	void **this_ptr = *(void ***)&pThisPtr;
	void **vtable = *(void ***)pThisPtr;
	void *func = vtable[242]; 
 
	union {CBaseEntity *(VfuncEmptyClass::*mfpnew)( int );
	#ifndef __linux__
			void *addr;	} u; 	u.addr = func;
	#else // GCC's member function pointers all contain a this pointer adjustor. You'd probably set it to 0 
				struct {void *addr; intptr_t adjustor;} s; } u; u.s.addr = func; u.s.adjustor = 0;
	#endif
 
	return (CBaseCombatWeapon *) (reinterpret_cast<VfuncEmptyClass*>(this_ptr)->*u.mfpnew)(slot);
}

bool UTIL_FindInSendTable(SendTable *pTable, 
						  const char *name,
						  sm_sendprop_info_t *info,
						  unsigned int offset)
{
	const char *pname;
	int props = pTable->GetNumProps();
	SendProp *prop;

	for (int i=0; i<props; i++)
	{
		prop = pTable->GetProp(i);
		pname = prop->GetName();
		if (pname && strcmp(name, pname) == 0)
		{
			info->prop = prop;
			info->actual_offset = offset + info->prop->GetOffset();
			return true;
		}
		if (prop->GetDataTable())
		{
			if (UTIL_FindInSendTable(prop->GetDataTable(), 
				name,
				info,
				offset + prop->GetOffset())
				)
			{
				return true;
			}
		}
	}

	return false;
}

DataTableInfo *SpawnhealthPlugin::_FindServerClass(const char *classname)
{
	DataTableInfo *pInfo = NULL;

	ServerClass *sc = m_ServerDll->GetAllServerClasses();
	while (sc)
	{
		if (strcmp(classname, sc->GetName()) == 0)
		{
			pInfo = new DataTableInfo;
			pInfo->sc = sc;
			break;
		}
		sc = sc->m_pNext;
	}
	if (!pInfo)
	{
		return NULL;
	}

	return pInfo;
}

bool SpawnhealthPlugin::FindSendPropInfo(const char *classname, const char *offset, sm_sendprop_info_t *info)
{
	DataTableInfo *pInfo;
	sm_sendprop_info_t *prop;

	if ((pInfo = _FindServerClass(classname)) == NULL)
	{
		return false;
	}

	if ((prop = pInfo->lookup.retrieve(offset)) == NULL)
	{
		sm_sendprop_info_t temp_info;

		if (!UTIL_FindInSendTable(pInfo->sc->m_pTable, offset, &temp_info, 0))
		{
			return false;
		}

		pInfo->lookup.insert(offset, temp_info);
		*info = temp_info;
	}
	else
	{
		*info = *prop;
	}
	
	return true;
}

I have attached the complete project along with my original SM plugin, note that I just extended the plugin I was porting, so the naming is a bit odd

Any help on this would be greatly appreciated.