From 483ef98af3dd43c3c84b1bf38f466b68caf41139 Mon Sep 17 00:00:00 2001
From: Arkshine <hv.contact@gmail.com>
Date: Fri, 9 Oct 2015 11:01:12 +0200
Subject: [PATCH] Load gamerules address and offsets

---
 gamedata/common.games/globalvars.engine.txt | 20 +++++++++++++
 modules/fakemeta/fakemeta_amxx.cpp          | 31 ++++++++++++++++++---
 modules/fakemeta/fakemeta_amxx.h            |  2 ++
 3 files changed, 49 insertions(+), 4 deletions(-)

diff --git a/gamedata/common.games/globalvars.engine.txt b/gamedata/common.games/globalvars.engine.txt
index e0389709..ccc3b2b9 100644
--- a/gamedata/common.games/globalvars.engine.txt
+++ b/gamedata/common.games/globalvars.engine.txt
@@ -40,6 +40,18 @@
 					"read"       "2"
 				}
 			}
+
+			"g_pGameRules"
+			{
+				"signature"  "g_pGameRules"
+				
+				"windows"
+				{
+					"read"       "2"
+				}
+				
+				"read"  "0"
+			}
 		}
 
 		"Signatures"
@@ -66,6 +78,14 @@
 				"linux"     "@realtime"
 				"mac"       "@realtime"
 			}
+
+			"g_pGameRules" // CGameRules *g_pGameRules
+			{
+				"library"   "server"
+				"windows"   "\x8B\x2A\x2A\x2A\x2A\x2A\x85\x2A\x74\x2A\x8B\x2A\xFF\x2A\x2A\xA1" // StartFrame()
+				"linux"     "@g_pGameRules"
+				"mac"       "@g_pGameRules"
+			}
 		}
 	}
 }
diff --git a/modules/fakemeta/fakemeta_amxx.cpp b/modules/fakemeta/fakemeta_amxx.cpp
index 5814ed44..ca0eb3df 100644
--- a/modules/fakemeta/fakemeta_amxx.cpp
+++ b/modules/fakemeta/fakemeta_amxx.cpp
@@ -15,9 +15,12 @@
 #include "sh_stack.h"
 
 IGameConfig *CommonConfig;
+IGameConfig *GamerulesConfig;
 IGameConfigManager *ConfigManager;
 
 HLTypeConversion TypeConversion;
+void *GameRulesReferenceAddress;
+void *GameRulesAddress;
 
 void OnAmxxAttach()
 {
@@ -39,13 +42,25 @@ void OnAmxxAttach()
 
 	ConfigManager = MF_GetConfigManager();
 
-	char error[256];
-	error[0] = '\0';
+	char error[256] = "";
 
 	if (!ConfigManager->LoadGameConfigFile("common.games", &CommonConfig, error, sizeof(error)) && error[0] != '\0')
 	{
-		MF_Log("Could not read common.games gamedata: %s", error);
-		MF_Log("get/set/find_ent_data* natives have been disabled");
+		MF_Log("get/set_ent_data* natives have been disabled because common.games gamedata could not be read: %s", error);
+		return;
+	}
+
+	*error = '\0';
+
+	if (!ConfigManager->LoadGameConfigFile("common.games/gamerules.games", &GamerulesConfig, error, sizeof(error)) && error[0] != '\0')
+	{
+		MF_Log("get/set_gamerules_* natives have been disabled because common.games/gamerules.games gamedata could not be read: %s", error);
+		return;
+	}
+
+	if (!CommonConfig->GetAddress("g_pGameRules", &GameRulesReferenceAddress) || !GameRulesReferenceAddress)
+	{
+		MF_Log("get/set_gamerules_* natives have been disabled because g_pGameRules address could not be found. ");
 		return;
 	}
 
@@ -63,6 +78,9 @@ extern ke::Vector<KVD_Wrapper *> g_FreeKVDWs;
 
 void OnAmxxDetach()
 {
+	ConfigManager->CloseGameConfigFile(CommonConfig);
+	ConfigManager->CloseGameConfigFile(GamerulesConfig);
+
 	while (!g_FreeTRs.empty())
 	{
 		delete g_FreeTRs.front();
@@ -78,6 +96,11 @@ void OnAmxxDetach()
 
 void ServerActivate(edict_t *pEdictList, int edictCount, int clientMax)
 {
+	if (GameRulesReferenceAddress)
+	{
+		GameRulesAddress = **reinterpret_cast<void***>(GameRulesReferenceAddress);
+	}
+
 	g_pFunctionTable_Post->pfnServerDeactivate = FMH_ServerDeactivate_Post;
 	RETURN_META(MRES_IGNORED);
 }
diff --git a/modules/fakemeta/fakemeta_amxx.h b/modules/fakemeta/fakemeta_amxx.h
index e61b4f61..c796fb10 100644
--- a/modules/fakemeta/fakemeta_amxx.h
+++ b/modules/fakemeta/fakemeta_amxx.h
@@ -75,9 +75,11 @@ extern NEW_DLL_FUNCTIONS *g_pNewFunctionsTable;
 extern NEW_DLL_FUNCTIONS *g_pNewFunctionsTable_Post;
 
 extern IGameConfig *CommonConfig;
+extern IGameConfig *GamerulesConfig;
 extern IGameConfigManager *ConfigManager;
 
 extern HLTypeConversion TypeConversion;
+extern void *GameRulesAddress;
 
 #endif //_FAKEMETA_INCLUDE_H