Add extension methods for clearing netprop & datamaps cache (#1943)

core/HalfLife2.cpp

@@ -1600,3 +1600,26 @@ uint64_t CHalfLife2::GetServerSteamId64() const
 
 	return 1ULL;
 }
+
+void CHalfLife2::RemoveDataTableCache(datamap_t *pMap)
+{
+	if (pMap == nullptr)
+	{
+		m_Maps.clear();
+		return;
+	}
+
+	m_Maps.removeIfExists(pMap);
+}
+
+bool CHalfLife2::RemoveSendPropCache(const char *classname)
+{
+	if (classname == nullptr)
+	{
+		m_Classes.clear();
+		return true;
+	}
+
+	return m_Classes.remove(classname);
+}
+

core/HalfLife2.h

@@ -261,6 +261,8 @@ public: //IGameHelpers
 	string_t AllocPooledString(const char *pszValue);
 	bool GetServerSteam3Id(char *pszOut, size_t len) const override;
 	uint64_t GetServerSteamId64() const override;
+	void RemoveDataTableCache(datamap_t *pMap = nullptr);
+	bool RemoveSendPropCache(const char *classname = nullptr);
 public:
 	void AddToFakeCliCmdQueue(int client, int userid, const char *cmd);
 	void ProcessFakeCliCmdQueue();

public/IGameHelpers.h

@@ -40,7 +40,7 @@
  */
 
 #define SMINTERFACE_GAMEHELPERS_NAME		"IGameHelpers"
-#define SMINTERFACE_GAMEHELPERS_VERSION		12
+#define SMINTERFACE_GAMEHELPERS_VERSION		13
 
 class CBaseEntity;
 class CBaseHandle;
@@ -358,6 +358,21 @@ namespace SourceMod
 		 * @return				ServerClass pointer on success, nullptr on failure.
 		 */
 		virtual ServerClass *FindEntityServerClass(CBaseEntity *pEntity) = 0;
+
+		/**
+		 * @brief Clears all, or removes a single datamap from the DataTable cache.
+		 *
+		 * @param pMap			NULL or datamap_t pointer.
+		 */
+		virtual void RemoveDataTableCache(datamap_t *pMap = nullptr) =0;
+
+		/**
+		 * @brief Clears all, or removes a single class from the SendProp cache.
+		 *
+		 * @param classname		NULL pointer or entity class name.
+		 * @return				True if cache was found and removed.
+		 */
+		virtual bool RemoveSendPropCache(const char *classname = nullptr) =0;
 	};
 }