From 3fba7ca5673ed309334a2ebf92dfba63f1419903 Mon Sep 17 00:00:00 2001
From: Arkshine <github@arkshine.me>
Date: Mon, 6 Mar 2017 11:29:02 +0100
Subject: [PATCH] Fun: Toggle PlayerPreThink forward on demand

---
 modules/fun/fun.cpp        | 23 +++++++++++++++++++++++
 modules/fun/fun.h          |  1 +
 modules/fun/moduleconfig.h |  2 +-
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/modules/fun/fun.cpp b/modules/fun/fun.cpp
index d3f13b8d..2bced379 100644
--- a/modules/fun/fun.cpp
+++ b/modules/fun/fun.cpp
@@ -395,11 +395,26 @@ static cell AMX_NATIVE_CALL set_user_footsteps(AMX *amx, cell *params)
 	{
 		pPlayer->v.flTimeStepSound = 999;
 		Players[index].SetSilentFootsteps(true);
+
+		g_pFunctionTable->pfnPlayerPreThink = PlayerPreThink;
 	}
 	else 
 	{
 		pPlayer->v.flTimeStepSound = STANDARDTIMESTEPSOUND;
 		Players[index].SetSilentFootsteps(false);
+
+		if (g_pFunctionTable->pfnPlayerPreThink)
+		{
+			for (auto i = 1; i <= gpGlobals->maxClients; ++i)
+			{
+				if (Players[i].HasSilentFootsteps())
+				{
+					return 1;
+				}
+			}
+
+			g_pFunctionTable->pfnPlayerPreThink = nullptr;
+		}
 	}
 
 	return 1;
@@ -527,5 +542,13 @@ void OnPluginsLoaded()
 	}
 
 	TypeConversion.init();
+
+	g_pFunctionTable->pfnPlayerPreThink = nullptr;
 }
 
+void ServerDeactivate()
+{
+	g_pFunctionTable->pfnPlayerPreThink = nullptr;
+
+	RETURN_META(MRES_IGNORED);
+}
diff --git a/modules/fun/fun.h b/modules/fun/fun.h
index 4836773f..70cb47f9 100644
--- a/modules/fun/fun.h
+++ b/modules/fun/fun.h
@@ -31,6 +31,7 @@
 #define HITGROUP_RIGHTLEG		7 // 128
 #define HITGROUP_MAX            8
 
+extern DLL_FUNCTIONS *g_pFunctionTable;
 
 static const auto kHitGroupsBits = (1 << HITGROUP_MAX) - 1;
 static const auto kMaxClients = 32u;
diff --git a/modules/fun/moduleconfig.h b/modules/fun/moduleconfig.h
index 06c8b963..112c9fae 100644
--- a/modules/fun/moduleconfig.h
+++ b/modules/fun/moduleconfig.h
@@ -119,7 +119,7 @@
 // #define FN_ClientCommand				ClientCommand				/* pfnClientCommand()			(wd) Player has sent a command (typed or from a bind) */
 // #define FN_ClientUserInfoChanged		ClientUserInfoChanged		/* pfnClientUserInfoChanged()	(wd) Client has updated their setinfo structure */
 // #define FN_ServerActivate			ServerActivate				/* pfnServerActivate()			(wd) Server is starting a new map */
-// #define FN_ServerDeactivate			ServerDeactivate			/* pfnServerDeactivate()		(wd) Server is leaving the map (shutdown or changelevel); SDK2 */
+#define FN_ServerDeactivate			ServerDeactivate			/* pfnServerDeactivate()		(wd) Server is leaving the map (shutdown or changelevel); SDK2 */
 #define FN_PlayerPreThink			PlayerPreThink				/* pfnPlayerPreThink() */
 // #define FN_PlayerPostThink			PlayerPostThink				/* pfnPlayerPostThink() */
 // #define FN_StartFrame				StartFrame					/* pfnStartFrame() */