Added ISmmAPI::GetVSPVersion() to get highest supported IServerPluginCallbacks interface version

--HG--
extra : convert_revision : svn%3Ac2935e3e-5518-0410-8daf-afa5dab7d4e3/trunk%40379

sourcemm/CSmmAPI.cpp

@@ -629,3 +629,8 @@ const char *CSmmAPI::GetUserMessage(int index, int *size)
 
 	return msg->name;
 }
+
+int CSmmAPI::GetVSPVersion()
+{
+	return g_VspVersion;
+}

sourcemm/CSmmAPI.h

@@ -70,6 +70,7 @@ namespace SourceMM
 		int GetUserMessageCount();
 		int FindUserMessage(const char *name, int *size=NULL);
 		const char *GetUserMessage(int index, int *size=NULL);
+		int GetVSPVersion();
 	public:
 		bool CacheCmds();
 		bool CmdCacheSuccessful();

sourcemm/ISmmAPI.h

@@ -266,7 +266,7 @@ public:		// Added in 1.4 (1:5)
 	/**
 	 * @brief Tells SourceMM to add VSP hooking capability to plugins.  
 	 *
-	 * Since this  potentially uses more resources than it would otherwise, plugins have to 
+	 * Since this potentially uses more resources than it would otherwise, plugins have to 
 	 * explicitly enable the feature.  Whether requested or not, if it is enabled, all plugins 
 	 * will get a pointer to the VSP listener through IMetamodListener.
 	 */
@@ -303,6 +303,15 @@ public:		// Added in 1.4 (1:5)
 	 * @return				Message name, or NULL on failure.
 	 */
 	virtual const char *GetUserMessage(int index, int *size=NULL) =0;
+public:		// Added in 1.4.1 (1:6)
+	/**
+	 * @brief Returns the highest interface version of IServerPluginCallbacks that the engine supports.
+	 * This is useful for games that run on older versions of the Source engine, such as The Ship.
+	 *
+	 * @return				Highest interface version of IServerPluginCallbacks.
+	 *						Returns 0 if SourceMM's VSP listener isn't currently enabled.
+	 */
+	virtual int GetVSPVersion() =0;
 };
 
 
@@ -314,7 +323,8 @@ public:		// Added in 1.4 (1:5)
  * 1.2   Added API more helper functions and new SourceHook version.
  * 1.2.2 Added API for printing to client console (with string formatting).
  * 1.3   Added new interface search API.
- * 1.4	 Added VSP listener and user message API.
+ * 1.4   Added VSP listener and user message API.
+ * 1.4.1 Added API for getting highest supported version of IServerPluginCallbacks.
  */
 
 #endif //_INCLUDE_ISMM_API_H

sourcemm/changelog.txt

@@ -1,3 +1,6 @@
+2007/??/?? 1.4.1:
+ - Added API for getting highest supported IServerPluginCallbacks interface version.
+
 2007/04/05 1.4.0:
  - Added API functions for retrieving User Message info without potentially crashing.
  - Added API functions for letting SourceMM plugins use Valve Server Plugin callbacks.

sourcemm/sourcemm.cpp

@@ -58,8 +58,8 @@ bool bGameInit = false;
 SourceHook::List<GameDllInfo *> gamedll_list;
 SourceHook::CallClass<IServerGameDLL> *g_GameDllPatch;
 int g_GameDllVersion = 0;
-const char VSPIFACE_001[] = "ISERVERPLUGINCALLBACKS001";
-const char VSPIFACE_002[] = "ISERVERPLUGINCALLBACKS002";
+int g_VspVersion = 0;
+const char VSPIFACE[] = "ISERVERPLUGINCALLBACKS";
 const char GAMEINFO_PATH[] = "|gameinfo_path|";
 
 void ClearGamedllList();
@@ -227,17 +227,18 @@ SMM_API void *CreateInterface(const char *iface, int *ret)
 		return NULL;
 	}
 
-	/* We check these separately because we can't reply
-	 * unless our interface version really matches.
-	 */
-	if ((strcmp(iface, VSPIFACE_002) == 0)
-		|| strcmp(iface, VSPIFACE_001) == 0)
+	if (strncmp(iface, VSPIFACE, 22) == 0)
 	{
-		if (ret)
+		g_VspVersion = atoi(&(iface[22]));
+
+		if (g_VspVersion <= MAX_VSP_VERSION)
 		{
-			*ret = IFACE_OK;
+			if (ret)
+			{
+				*ret = IFACE_OK;
+			}
+			return &g_VspListener;
 		}
-		return &g_VspListener;
 	}
 
 	if (!gParsedGameInfo)

sourcemm/sourcemm.h

@@ -35,12 +35,15 @@
 #define		SOURCEMM_VERSION	SVN_FILE_VERSION_STRING
 #define		SOURCEMM_DATE		__DATE__
 #define		SM_VERS_API_MAJOR	1		//increase this on a breaking change
-#define		SM_VERS_API_MINOR	5		//increase this on a non-breaking API change
+#define		SM_VERS_API_MINOR	6		//increase this on a non-breaking API change
 
-//We need a good CServerGameDLL version to work properly.  We support these inclusively.
+/* We need a good CServerGameDLL version to work properly.  We support these inclusively. */
 #define	MIN_GAMEDLL_VERSION	3
 #define	MAX_GAMEDLL_VERSION	8
 
+/* Maximum version of IServerPluginCallbacks that SourceMM supports */
+#define MAX_VSP_VERSION 2
+
 /**
  * @brief Entry point for HL2 Engine
  */
@@ -114,6 +117,9 @@ extern PluginId g_PLID;
 /** @brief ServerGameDLL version that is currently loaded */
 extern int g_GameDllVersion;
 
+/** @brief Highest IServerPluginCallbacks version that is supported by engine */
+extern int g_VspVersion;
+
 extern bool bGameInit;
 
 /** @brief Global CallClass for IServerGameDLL */