From 6c6ff95e9baad6a2f34729f8a6373e2dc15a51c0 Mon Sep 17 00:00:00 2001
From: Adrian Cirstea <54354938+ShadowsAdi@users.noreply.github.com>
Date: Mon, 13 May 2024 16:06:11 +0300
Subject: [PATCH] Implement `RH_SV_SendResources` hook (#308)

---
 .../scripting/include/reapi_engine_const.inc     |  9 ++++++++-
 reapi/include/cssdk/engine/rehlds_api.h          |  5 +++++
 reapi/src/hook_callback.cpp                      | 16 ++++++++++++++++
 reapi/src/hook_callback.h                        |  4 ++++
 reapi/src/hook_list.cpp                          |  2 +-
 reapi/src/hook_list.h                            |  1 +
 6 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/reapi/extra/amxmodx/scripting/include/reapi_engine_const.inc b/reapi/extra/amxmodx/scripting/include/reapi_engine_const.inc
index 2302d05b..a2e47f94 100644
--- a/reapi/extra/amxmodx/scripting/include/reapi_engine_const.inc
+++ b/reapi/extra/amxmodx/scripting/include/reapi_engine_const.inc
@@ -100,9 +100,10 @@ enum EngineFunc
 
 	/*
 	* Description:  Called when client it's in the scoreboard
-	* Params:       (const this)
+	* Params:       (const client)
 	*/
 	RH_SV_EmitPings,
+
 	/*
 	* Description:  Called when an entity is created.
 	* Return type:  Edict * (Entity index)
@@ -184,6 +185,12 @@ enum EngineFunc
 	*/
 	RH_ExecuteServerStringCmd,
 
+	/*
+	* Description:  Called when server sends resources list and location.
+	* Params:       (const client)
+	*/
+	RH_SV_SendResources,
+
 };
 
 /**
diff --git a/reapi/include/cssdk/engine/rehlds_api.h b/reapi/include/cssdk/engine/rehlds_api.h
index 3e2b4ecc..28f41a1d 100644
--- a/reapi/include/cssdk/engine/rehlds_api.h
+++ b/reapi/include/cssdk/engine/rehlds_api.h
@@ -258,6 +258,10 @@ typedef IVoidHookChainRegistry<const char *> IRehldsHookRegistry_SV_ClientPrintf
 typedef IHookChain<bool, edict_t*, edict_t*> IRehldsHook_SV_AllowPhysent;
 typedef IHookChainRegistry<bool, edict_t*, edict_t*> IRehldsHookRegistry_SV_AllowPhysent;
 
+//SV_SendResources hook
+typedef IVoidHookChain<sizebuf_t *> IRehldsHook_SV_SendResources;
+typedef IVoidHookChainRegistry<sizebuf_t *> IRehldsHookRegistry_SV_SendResources;
+
 class IRehldsHookchains {
 public:
 	virtual ~IRehldsHookchains() { }
@@ -317,6 +321,7 @@ class IRehldsHookchains {
 	virtual IRehldsHookRegistry_SV_AddResource* SV_AddResource() = 0;
 	virtual IRehldsHookRegistry_SV_ClientPrintf* SV_ClientPrintf() = 0;
 	virtual IRehldsHookRegistry_SV_AllowPhysent* SV_AllowPhysent() = 0;
+	virtual IRehldsHookRegistry_SV_SendResources* SV_SendResources() = 0;
 };
 
 struct RehldsFuncs_t {
diff --git a/reapi/src/hook_callback.cpp b/reapi/src/hook_callback.cpp
index 06e0900c..c37f1d9c 100644
--- a/reapi/src/hook_callback.cpp
+++ b/reapi/src/hook_callback.cpp
@@ -242,6 +242,22 @@ void ExecuteServerStringCmd(IRehldsHook_ExecuteServerStringCmd* chain, const cha
 	callVoidForward(RH_ExecuteServerStringCmd, original, cmdName, cmdSrc, cmdSrc == src_client ? cl->GetId() + 1 : AMX_NULLENT);
 }
 
+void SV_SendResources_AMXX(SV_SendResources_t *data, IGameClient *cl)
+{
+	auto original = [data](int _cl)
+	{
+		data->m_chain->callNext(data->m_args);
+	};
+
+	callVoidForward(RH_SV_SendResources, original, cl ? cl->GetId() + 1 : AMX_NULLENT);
+}
+
+void SV_SendResources(IRehldsHook_SV_SendResources *chain, sizebuf_t *msg)
+{
+	SV_SendResources_t data(chain, msg);
+	SV_SendResources_AMXX(&data, g_RehldsFuncs->GetHostClient());
+}
+
 /*
 * ReGameDLL functions
 */
diff --git a/reapi/src/hook_callback.h b/reapi/src/hook_callback.h
index 8bdc9c7a..9e18c3ed 100644
--- a/reapi/src/hook_callback.h
+++ b/reapi/src/hook_callback.h
@@ -371,6 +371,10 @@ int PF_precache_generic_I(IRehldsHook_PF_precache_generic_I *chain, const char *
 int PF_precache_model_I(IRehldsHook_PF_precache_model_I *chain, char *s);
 int PF_precache_sound_I(IRehldsHook_PF_precache_sound_I *chain, const char *s);
 
+using SV_SendResources_t = hookdata_t<IRehldsHook_SV_SendResources *, sizebuf_t *>;
+void SV_SendResources_AMXX(SV_SendResources_t *data, IGameClient *cl);
+void SV_SendResources(IRehldsHook_SV_SendResources *chain, sizebuf_t *msg);
+
 struct EventPrecache_args_t
 {
 	EventPrecache_args_t(int _type) : type(_type) {}
diff --git a/reapi/src/hook_list.cpp b/reapi/src/hook_list.cpp
index 26e054d2..df094509 100644
--- a/reapi/src/hook_list.cpp
+++ b/reapi/src/hook_list.cpp
@@ -108,7 +108,7 @@ hook_t hooklist_engine[] = {
 	ENG(SV_ClientPrintf),
 	ENG(SV_AllowPhysent),
 	ENG(ExecuteServerStringCmd),
-
+	ENG(SV_SendResources, _AMXX),
 };
 
 #define DLL(h,...) { {}, {}, #h, "ReGameDLL", [](){ return api_cfg.hasReGameDLL(); }, ((!(RG_##h & (MAX_REGION_RANGE - 1)) ? regfunc::current_cell = 1, true : false) || (RG_##h & (MAX_REGION_RANGE - 1)) == regfunc::current_cell++) ? regfunc(h##__VA_ARGS__) : regfunc(#h#__VA_ARGS__), [](){ g_ReGameHookchains->h()->registerHook(&h); }, [](){ g_ReGameHookchains->h()->unregisterHook(&h); }, false}
diff --git a/reapi/src/hook_list.h b/reapi/src/hook_list.h
index 02cabe3f..1618afd4 100644
--- a/reapi/src/hook_list.h
+++ b/reapi/src/hook_list.h
@@ -117,6 +117,7 @@ enum EngineFunc
 	RH_SV_ClientPrintf,
 	RH_SV_AllowPhysent,
 	RH_ExecuteServerStringCmd,
+	RH_SV_SendResources,
 
 	// [...]
 };