From 59840685a49a4e85eeb0d7f6271e8614f30314af Mon Sep 17 00:00:00 2001
From: A1m` <33463136+A1mDev@users.noreply.github.com>
Date: Sat, 2 Oct 2021 21:45:18 +0700
Subject: [PATCH] Fix 'GiveNamedItem' in the game left4dead2. (#1590)

* Fix 'GiveNamedItem' in the game left4dead2.

The method 'CCSPlayer::GiveNamedItem(char const*, int, CBaseEntity*)' does not work in game left4dead2, any given weapon and object immediately falls to the ground, besides, the code is missing a parameter to call this method (even with the added parameter does not give a weapon to hands). Another method 'CTerrorPlayer::GiveNamedItem(char const*, int, bool, CBaseEntity*)' works great, besides it makes it possible to give out all the items that exist in the game.

* Add x64 support

Add x64 support

* Changed argument type to bool.

Changed argument type to bool.
---
 extensions/sdktools/vnatives.cpp            | 32 +++++++++++++++++++++
 gamedata/sdktools.games/game.left4dead2.txt |  9 +++---
 2 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/extensions/sdktools/vnatives.cpp b/extensions/sdktools/vnatives.cpp
index 2e3cf434..2840cdcf 100644
--- a/extensions/sdktools/vnatives.cpp
+++ b/extensions/sdktools/vnatives.cpp
@@ -229,6 +229,38 @@ static cell_t GiveNamedItem(IPluginContext *pContext, const cell_t *params)
 
 	return gamehelpers->EntityToBCompatRef(pEntity);
 }
+#elif SOURCE_ENGINE == SE_LEFT4DEAD2
+// CBaseEntity *CTerrorPlayer::GiveNamedItem( const char *pchName, int iSubType, bool bForce, CBaseEntity *pUnk)
+static cell_t GiveNamedItem(IPluginContext *pContext, const cell_t *params)
+{
+	static ValveCall *pCall = NULL;
+	if (!pCall)
+	{
+		ValvePassInfo pass[5];
+		InitPass(pass[0], Valve_String, PassType_Basic, PASSFLAG_BYVAL);
+		InitPass(pass[1], Valve_POD, PassType_Basic, PASSFLAG_BYVAL);
+		InitPass(pass[2], Valve_Bool, PassType_Basic, PASSFLAG_BYVAL);
+		InitPass(pass[3], Valve_CBaseEntity, PassType_Basic, PASSFLAG_BYVAL);
+		InitPass(pass[4], Valve_CBaseEntity, PassType_Basic, PASSFLAG_BYVAL);
+		
+		if (!CreateBaseCall("GiveNamedItem", ValveCall_Player, &pass[4], pass, 4, &pCall)) {
+			return pContext->ThrowNativeError("\"GiveNamedItem\" not supported by this mod");
+		} else if (!pCall) {
+			return pContext->ThrowNativeError("\"GiveNamedItem\" wrapper failed to initialize");
+		}
+	}
+
+	CBaseEntity *pEntity = NULL;
+	START_CALL();
+	DECODE_VALVE_PARAM(1, thisinfo, 0);
+	DECODE_VALVE_PARAM(2, vparams, 0);
+	DECODE_VALVE_PARAM(3, vparams, 1);
+	*(bool *)(vptr + sizeof(void *) + sizeof(void *) + sizeof(int)) = false;
+	*(void **)(vptr + sizeof(void *) + sizeof(void *) + sizeof(int) + sizeof(bool)) = NULL;
+	FINISH_CALL_SIMPLE(&pEntity);
+	
+	return gamehelpers->EntityToBCompatRef(pEntity);
+}
 #else
 // CBaseEntity	*GiveNamedItem( const char *szName, int iSubType = 0 )
 static cell_t GiveNamedItem(IPluginContext *pContext, const cell_t *params)
diff --git a/gamedata/sdktools.games/game.left4dead2.txt b/gamedata/sdktools.games/game.left4dead2.txt
index faeb75fb..6a732afb 100644
--- a/gamedata/sdktools.games/game.left4dead2.txt
+++ b/gamedata/sdktools.games/game.left4dead2.txt
@@ -117,14 +117,15 @@
 	}
 	
 	"left4dead2"
-	{		
+	{
 		"Offsets"
 		{
+			/* CTerrorPlayer::GiveNamedItem(char const*, int, bool, CBaseEntity*) */
 			"GiveNamedItem"
 			{
-				"windows"	"508"
-				"linux"		"509"
-				"mac"		"509"
+				"windows"	"431"
+				"linux"		"432"
+				"mac"		"432"
 			}
 			"RemovePlayerItem"
 			{