npcChat [Non Retail]

[daiiawn]

Attached is a non retail function, that allows mobs/npcs to send you /tells via lua scripts.

Example usage:
In CHOCOBO.LUA (NPC)

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function onTrigger(player,npc)
	message = "Galka's ate my mum";
	SendMobMessage(npc:getID(),player:getID(),message);
end;

In WILD_RABBIT.LUA (MOB)

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function onMobDeath(mob,killer)	
	message = "Yeah, thanks for that! :(";
	SendMobMessage(mob:getID(),killer:getID(),message);	
end;	

[altalus]

I love you for this... seriously... this is kick ass...

[TeoTwawki]

I made a few modifications to this for enabling other chat types besides tell.

The following instructions assume you don't have the older version already, if you do, just replace what you have from the patch.

Add this in chat_message.cpp :

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CNPCMessagePacket::CNPCMessagePacket(int8* name, CHAT_MESSAGE_TYPE MessageType, uint8 zone, int8* dat, uint8 size) 
{
	this->type = 0x17;
	this->size = 32 + strlen(dat) + strlen(dat)%2;
	WBUFB(data,(0x04)-4) = MessageType;
    WBUFB(data,(0x06)-4) = zone;
	memcpy(data+(0x08)-4, name,size);
	memcpy(data+(0x18)-4, dat, strlen(dat));
}

Add this in chat_message.h right above the #endif line:

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class CNPCMessagePacket : public CBasicPacket
{
public:
	CNPCMessagePacket(int8* name, CHAT_MESSAGE_TYPE MessageType, uint8 zone, int8* dat,uint8 size);
};

In luautils.cpp find:

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Lunar<CLuaAbility>::Register(LuaHandle);

and make these new lines above it

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	lua_register(LuaHandle,"SpoofSay",luautils::SpoofSay);
	lua_register(LuaHandle,"SpoofTell",luautils::SpoofTell);

Also in luautils.cpp find:

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/************************************************************************
*                                                                       *
*  Загружаем значение переменной TextID указанной зоны                  *
*                                                                       *
************************************************************************/

int32 GetTextIDVariable(uint16 ZoneID, const char* variable)

And place this code above it:

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/************************************************************************
*																		*
*	Send a fake "say" message from an NPC or MOB.						*
*																		*
************************************************************************/

int32 SpoofSay(lua_State* L)
{
	uint32 mobid = (uint32)lua_tointeger(L,1);
	uint32 CharID = (uint32)lua_tointeger(L,2);
	CBaseEntity* PNPC = (CBaseEntity*)zoneutils::GetEntity(mobid, TYPE_MOB | TYPE_NPC);
	if (PNPC != NULL)
	{
		const int8* Query = "SELECT targid, pos_zone FROM chars INNER JOIN accounts_sessions USING(charid) WHERE charid = %u LIMIT 1";
		int32 ret = Sql_Query(SqlHandle, Query, CharID);
		if (ret != SQL_ERROR &&
		Sql_NumRows(SqlHandle) != 0 &&
		Sql_NextRow(SqlHandle) == SQL_SUCCESS)
		{
			uint16 TargID = (uint16)Sql_GetUIntData(SqlHandle,0);
			uint8  ZoneID = (uint8) Sql_GetUIntData(SqlHandle,1);
			CCharEntity* PTellRecipient = (CCharEntity*)zoneutils::GetZone(ZoneID)->GetEntity(TargID, TYPE_PC);
			int8* data = (int8*)lua_tolstring(L,3,NULL);
			int8* name = (int8*)PNPC->GetObjectName();
			uint8 size = (uint8)PNPC->name.size();
			PTellRecipient->pushPacket(new CNPCMessagePacket(name,MESSAGE_SAY,ZoneID,data,size));
		}
	}
	return 1;
}

/************************************************************************
*																		*
*	Send a fake "tell" message from an NPC or MOB.						*
*																		*
************************************************************************/

int32 SpoofTell(lua_State* L)
{
	uint32 mobid = (uint32)lua_tointeger(L,1);
	uint32 CharID = (uint32)lua_tointeger(L,2);
	CBaseEntity* PNPC = (CBaseEntity*)zoneutils::GetEntity(mobid, TYPE_MOB | TYPE_NPC);
	if (PNPC != NULL)
	{
		const int8* Query = "SELECT targid, pos_zone FROM chars INNER JOIN accounts_sessions USING(charid) WHERE charid = %u LIMIT 1";
		int32 ret = Sql_Query(SqlHandle, Query, CharID);
		if (ret != SQL_ERROR &&
		Sql_NumRows(SqlHandle) != 0 &&
		Sql_NextRow(SqlHandle) == SQL_SUCCESS)
		{
			uint16 TargID = (uint16)Sql_GetUIntData(SqlHandle,0);
			uint8  ZoneID = (uint8) Sql_GetUIntData(SqlHandle,1);
			CCharEntity* PTellRecipient = (CCharEntity*)zoneutils::GetZone(ZoneID)->GetEntity(TargID, TYPE_PC);
			int8* data = (int8*)lua_tolstring(L,3,NULL);
			int8* name = (int8*)PNPC->GetObjectName();
			uint8 size = (uint8)PNPC->name.size();
			PTellRecipient->pushPacket(new CNPCMessagePacket(name,MESSAGE_TELL,ZoneID,data,size));
		}
	}
	return 1;
}

In luautils.h find:

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	int32 UpdateNMSpawnPoint(lua_State* L);                                     // Update the spawn point of an NM

and place these newlines below it:

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	int32 SpoofSay(lua_State* L);												// Send faked say messages from NPCs or MOBs.
	int32 SpoofTell(lua_State* L);												// Send faked tell messages from NPCs or MOBs.

If you compare with the patch you'll see I didn't change much. All really did I did was add the chat type instead of a static 0x03 and renamed the command(s).

Thank you daiiawn for posting the original version of this!


Edit: missed a piece of code in baseentity.cpp right after

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const int8* CBaseEntity::GetName()
{
	return name.c_str();
}

I have this (which I think is almost identical to the original patch, don't remember changing it *shrug*):

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const int8* CBaseEntity::GetObjectName()
{
	// Strip out the _ in names
	ObjectName = name;
	size_t start_pos = ObjectName.find("_");
	if (start_pos < name.size())
	{
		ObjectName.replace(start_pos,1," ");
	}
	return ObjectName.c_str();
}

In baseentitity.h find:

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	virtual const int8*		GetName();			// The entity name

and add:

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	virtual const int8*		GetObjectName();	// The entity name

[nasomi]

I'm liking this, but I wanted to make sure of something.

chat_message.h has this:

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class CChatMessagePacket : public CBasicPacket
{
public:

	CChatMessagePacket(CCharEntity* PChar, CHAT_MESSAGE_TYPE MessageType, int8* buff);
};

And you want to add this below that?

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class CNPCMessagePacket : public CBasicPacket
{
public:
	CNPCMessagePacket(int8* name, CHAT_MESSAGE_TYPE MessageType, uint8 zone, int8* dat, uint8 size);
};

Also this:

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CNPCMessagePacket::CNPCMessagePacket(int8* name, CHAT_MESSAGE_TYPE MessageType, uint8 zone, int8* dat, uint8 size)
{
	this->type = 0x17;
	this->size = 32 + strlen(dat) + strlen(dat) % 2;
	WBUFB(data, (0x04) - 4) = MessageType;
	WBUFB(data, (0x06) - 4) = zone;
	memcpy(data + (0x08) - 4, name, size);
	memcpy(data + (0x18) - 4, dat, strlen(dat));
}

Goes after this:

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CChatMessagePacket::CChatMessagePacket(CCharEntity* PChar, CHAT_MESSAGE_TYPE MessageType, int8* buff)
{
    this->type = 0x17;
    this->size = 32 + strlen(buff) + strlen(buff) % 2;

    if (PChar->nameflags.flags & FLAG_GM)
    {
        WBUFB(data, (0x05) - 4) = 0x01;
    }
    WBUFB(data, (0x04) - 4) = MessageType;
    WBUFW(data, (0x06) - 4) = PChar->getZone();

    memcpy(data + (0x08) - 4, PChar->GetName(), PChar->name.size());
    memcpy(data + (0x18) - 4, buff, strlen(buff));

Does that sound right?

[TeoTwawki]

Yep

[nasomi]

That's throwing more than a few errors.

GetSayName is not a member of cbaseentity, there were no modifications to baseentity.h that i saw.

syntax error: identifier 'cnpc messagepacket
message_say : unidentified identifier
ccharentity::pushpacket functin does not take 5 arguments

Am I missing something? It produced 16 errors.

[TeoTwawki]

You're right I missed something else that got altered from the original patch. Editing the other post.

Changed it GetObjectName. The original Patch had GetTellName, and before I merged our work and shared I had been using a GetSayName for spoofs. Just changed the name because we aren't using it just for tell. Add the snippet I added to the other post and change existing instances of GetSayName and it should compile now.

[Aale]

Sorry for the necro bump, did the instructional post after the OP ever get edited? Just compiled this and getting the same 16 errors nasomi had.

Edit - only getting 15 errors, and 1 warning as follows:

warning C4005: 'FD_SETSIZE' : macro redefinition d:\ffxi server\darkstar\src\common\socket.h 12 1 DSGame-server

error C2061: syntax error : identifier 'CNPCMessagePacket' d:\ffxi server\darkstar\src\map\lua\luautils.cpp 991 1 DSGame-server
error C2065: 'MESSAGE_SAY' : undeclared identifier d:\ffxi server\darkstar\src\map\lua\luautils.cpp 991 1 DSGame-server
error C2660: 'CCharEntity::pushPacket' : function does not take 5 arguments d:\ffxi server\darkstar\src\map\lua\luautils.cpp 991 1 DSGame-server
error C2143: syntax error : missing ';' before ')' d:\ffxi server\darkstar\src\map\lua\luautils.cpp 991 1 DSGame-server
error C2061: syntax error : identifier 'CNPCMessagePacket' d:\ffxi server\darkstar\src\map\lua\luautils.cpp 1022 1 DSGame-server
error C2065: 'MESSAGE_TELL' : undeclared identifier d:\ffxi server\darkstar\src\map\lua\luautils.cpp 1022 1 DSGame-server
error C2660: 'CCharEntity::pushPacket' : function does not take 5 arguments d:\ffxi server\darkstar\src\map\lua\luautils.cpp 1022 1 DSGame-server
error C2143: syntax error : missing ';' before ')' d:\ffxi server\darkstar\src\map\lua\luautils.cpp 1022 1 DSGame-server
error C2065: 'ObjectName' : undeclared identifier d:\ffxi server\darkstar\src\map\entities\baseentity.cpp 66 1 DSGame-server
error C2065: 'ObjectName' : undeclared identifier d:\ffxi server\darkstar\src\map\entities\baseentity.cpp 67 1 DSGame-server
error C2228: left of '.find' must have class/struct/union d:\ffxi server\darkstar\src\map\entities\baseentity.cpp 67 1 DSGame-server
error C2065: 'ObjectName' : undeclared identifier d:\ffxi server\darkstar\src\map\entities\baseentity.cpp 70 1 DSGame-server
error C2228: left of '.replace' must have class/struct/union d:\ffxi server\darkstar\src\map\entities\baseentity.cpp 70 1 DSGame-server
error C2065: 'ObjectName' : undeclared identifier d:\ffxi server\darkstar\src\map\entities\baseentity.cpp 72 1 DSGame-server
error C2228: left of '.c_str' must have class/struct/union d:\ffxi server\darkstar\src\map\entities\baseentity.cpp 72 1 DSGame-server

[TeoTwawki]

The packet this uses got changed a bit. My own post on this is way old/outdated now. I have a sort of working version right now but I have a few bugs to work out. I dunno if daiiawn is still around anymore, but I'll see if I can make time to post an updated version. Among other changes I've made since then: argument to function to specify chat type (say tell shout etc), rather than multiple near duplicate functions.

[Aale]

Awesome, looking forward to it ^^