From 3b3abc2bc6c100e74d4df28f9a69e043fd7ca370 Mon Sep 17 00:00:00 2001
From: Flugente <Flugente@3b4a5df2-a311-0410-b5c6-a8a6f20db521>
Date: Wed, 17 Jun 2020 20:21:39 +0000
Subject: [PATCH] We can play external dialogue lines for NPC merchants via the
 lua function HandleNPCMerchantQuote(...)

For more info, see http://thepit.ja-galaxy-forum.com/index.php?t=msg&th=20611&goto=360388&#msg_360388

Requires GameDir >= r2550.

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@8821 3b4a5df2-a311-0410-b5c6-a8a6f20db521
---
 Strategic/LuaInitNPCs.cpp     | 14 ++++++++++++++
 Strategic/LuaInitNPCs.h       |  1 +
 Tactical/Dialogue Control.cpp | 20 ++++++++++++++++++++
 3 files changed, 35 insertions(+)

diff --git a/Strategic/LuaInitNPCs.cpp b/Strategic/LuaInitNPCs.cpp
index e2504702..9dceea5d 100644
--- a/Strategic/LuaInitNPCs.cpp
+++ b/Strategic/LuaInitNPCs.cpp
@@ -13365,6 +13365,20 @@ void LuaHandleReplaceQuote( UINT8 ubProfile, UINT16 usQuoteNum )
 	LuaFunction( _LS.L, "HandleReplaceQuote" ).Param<int>( ubProfile ).Param<int>( usQuoteNum ).Call( 2 );
 }
 
+void LuaHandleNPCMerchantQuote( INT16 sSectorX, INT16 sSectorY, INT8 bSectorZ, UINT16 ubMerchantID, UINT8 ubBodyType, UINT16 usQuoteNum )
+{
+	const char* filename = "scripts\\Overhead.lua";
+
+	LuaScopeState _LS( true );
+
+	IniFunction( _LS.L(), TRUE );
+	IniGlobalGameSetting( _LS.L() );
+
+	SGP_THROW_IFFALSE( _LS.L.EvalFile( filename ), _BS( "Cannot open file: " ) << filename << _BS::cget );
+
+	LuaFunction( _LS.L, "HandleNPCMerchantQuote" ).Param<int>( sSectorX ).Param<int>( sSectorY ).Param<int>( bSectorZ ).Param<int>( ubMerchantID ).Param<int>( ubBodyType ).Param<int>( usQuoteNum ).Call( 6 );
+}
+
 void LuaAddArmsDealerAdditionalIntelData()
 {
 	const char* filename = "scripts\\Overhead.lua";
diff --git a/Strategic/LuaInitNPCs.h b/Strategic/LuaInitNPCs.h
index fd9ef4ca..ed419d1b 100644
--- a/Strategic/LuaInitNPCs.h
+++ b/Strategic/LuaInitNPCs.h
@@ -94,6 +94,7 @@ extern BOOLEAN LetLuaMusicControl(UINT8 Init);
 
 void LuaHandleAdditionalDialogue( INT16 sSectorX, INT16 sSectorY, INT8 bSectorZ, UINT8 ubProfile, INT32 iFaceIndex, UINT16 usEventNr, UINT32 aData1, UINT32 aData2, UINT32 aData3 );
 void LuaHandleReplaceQuote( UINT8 ubProfile, UINT16 usQuoteNum );
+void LuaHandleNPCMerchantQuote( INT16 sSectorX, INT16 sSectorY, INT8 bSectorZ, UINT16 ubMerchantID, UINT8 ubBodyType, UINT16 usQuoteNum );
 void LuaAddArmsDealerAdditionalIntelData();
 void LuaAddPhotoData( INT16 sSectorX, INT16 sSectorY, INT8 bSectorZ, INT32 sGridNo, INT8 bLevel, UINT8 ubPhotographerProfile, UINT16 room, UINT8 usTargetProfile );
 void LuaGetPhotoData( UINT8 aType );
diff --git a/Tactical/Dialogue Control.cpp b/Tactical/Dialogue Control.cpp
index f9eb537f..110fbe49 100644
--- a/Tactical/Dialogue Control.cpp	
+++ b/Tactical/Dialogue Control.cpp	
@@ -211,6 +211,7 @@ extern void HandlePendingInitConv( );
 extern BOOLEAN WillMercRenew( SOLDIERTYPE *pSoldier, BOOLEAN fSayQuote );
 extern void DrawFace( INT16 sCharNumber );
 extern void LuaHandleReplaceQuote( UINT8 ubProfile, UINT16 usQuoteNum );
+extern void LuaHandleNPCMerchantQuote( INT16 sSectorX, INT16 sSectorY, INT8 bSectorZ, UINT16 ubMerchantID, UINT8 ubBodyType, UINT16 usQuoteNum );
 
 // the next said quote will pause time
 BOOLEAN fPausedTimeDuringQuote = FALSE;
@@ -2045,6 +2046,9 @@ BOOLEAN SpecialCharacterDialogueEventWithExtraParam( UINT32 uiSpecialEventFlag,
 	return( TRUE );
 }
 
+extern INT8 gbSelectedArmsDealerID;
+extern UINT8 gusIDOfCivTrader;
+
 BOOLEAN ExecuteCharacterDialogue( UINT8 ubCharacterNum, UINT16 usQuoteNum, INT32 iFaceIndex, UINT8 bUIHandlerID, BOOLEAN fFromSoldier )
 {
 	UINT32	uiSoundID;
@@ -2146,6 +2150,22 @@ BOOLEAN ExecuteCharacterDialogue( UINT8 ubCharacterNum, UINT16 usQuoteNum, INT32
 	// anv: have to do it now for single sounds
 	subsequentsounds.ubMaxSndCounter = 0;
 
+	// Flugente: if this an NPC merchant we don't say anything normally. So instead we call lua so that modders can add dislogue of their own
+	if ( bUIHandlerID == DIALOGUE_SHOPKEEPER_UI
+		&& ubCharacterNum == NO_PROFILE
+		&& iFaceIndex == -1
+		&& gusIDOfCivTrader != NOBODY )
+	{
+		SOLDIERTYPE* pShopkeeper = MercPtrs[gusIDOfCivTrader];
+
+		if ( pShopkeeper )
+		{
+			LuaHandleNPCMerchantQuote( gWorldSectorX, gWorldSectorY, gbWorldSectorZ, gbSelectedArmsDealerID, pShopkeeper->ubBodyType, usQuoteNum );
+
+			return TRUE;
+		}
+	}
+
 	// Check face index
 	CHECKF( iFaceIndex != -1 );