From 6bb7b3a1f8895b1da03dc97f6bd78f7c4212063f Mon Sep 17 00:00:00 2001
From: David Anderson <dvander@alliedmods.net>
Date: Wed, 29 Aug 2007 00:27:54 +0000
Subject: [PATCH] added a layer for autoloading per-game extensions

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401386
---
 core/sourcemod.cpp            | 11 +++++++++++
 core/sourcemod.h              |  1 +
 core/systems/ExtensionSys.cpp | 12 ++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/core/sourcemod.cpp b/core/sourcemod.cpp
index 5ef27d6c..738253cf 100644
--- a/core/sourcemod.cpp
+++ b/core/sourcemod.cpp
@@ -50,6 +50,7 @@
 #include "MenuStyle_Radio.h"
 #include "Database.h"
 #include "HalfLife2.h"
+#include "GameConfigs.h"
 
 SH_DECL_HOOK6(IServerGameDLL, LevelInit, SH_NOATTRIB, false, bool, const char *, const char *, const char *, const char *, bool, bool);
 SH_DECL_HOOK0_void(IServerGameDLL, LevelShutdown, SH_NOATTRIB, false);
@@ -72,6 +73,7 @@ IForward *g_pOnMapEnd = NULL;
 bool g_Loaded = false;
 int g_StillFrames = 0;
 float g_StillTime = 0.0f;
+IExtension *g_pGameExt = NULL;
 
 typedef int (*GIVEENGINEPOINTER)(ISourcePawnEngine *);
 typedef int (*GIVEENGINEPOINTER2)(ISourcePawnEngine *, unsigned int api_version);
@@ -518,6 +520,15 @@ void SourceModBase::DoGlobalPluginLoads()
 	/* Load any auto extensions */
 	g_Extensions.TryAutoload();
 
+	/* Load any game extension */
+	const char *game_ext;
+	if ((game_ext = g_pGameConf->GetKeyValue("GameExtension")) != NULL)
+	{
+		char path[PLATFORM_MAX_PATH];
+		UTIL_Format(path, sizeof(path), "%s.ext." PLATFORM_LIB_EXT, game_ext);
+		g_pGameExt = g_Extensions.LoadAutoExtension(path);
+	}
+
 	/* Run the first pass */
 	g_PluginSys.LoadAll_FirstPass(config_path, plugins_path);
 
diff --git a/core/sourcemod.h b/core/sourcemod.h
index f00e7068..53a4e01b 100644
--- a/core/sourcemod.h
+++ b/core/sourcemod.h
@@ -142,5 +142,6 @@ private:
 extern SourceModBase g_SourceMod;
 extern HandleType_t g_WrBitBufType;		//:TODO: find a better place for this
 extern HandleType_t g_RdBitBufType;		//:TODO: find a better place for this
+extern IExtension *g_pGameExt;
 
 #endif //_INCLUDE_SOURCEMOD_GLOBALHEADER_H_
diff --git a/core/systems/ExtensionSys.cpp b/core/systems/ExtensionSys.cpp
index 90217fd8..57376cf1 100644
--- a/core/systems/ExtensionSys.cpp
+++ b/core/systems/ExtensionSys.cpp
@@ -720,6 +720,12 @@ bool CExtensionManager::UnloadExtension(IExtension *_pExt)
 		}
 	}
 
+	/* :HACKHACK: make sure g_pGameExt gets cleared */
+	if (pExt == g_pGameExt)
+	{
+		g_pGameExt = NULL;
+	}
+
 	delete pExt;
 
 	List<CExtension *>::iterator iter;
@@ -904,6 +910,12 @@ void CExtensionManager::OnRootConsoleCommand(const char *cmd, unsigned int argco
 				return;
 			}
 
+			if (pExt == g_pGameExt)
+			{
+				g_RootMenu.ConsolePrint("[SM] Game extensions cannot be unloaded at this time.");
+				return;
+			}
+
 			if (argcount > 4 && pExt->unload_code)
 			{
 				const char *unload = g_RootMenu.GetArgument(4);