Add SourceTV_PrintToChat native

Send chat message to one client only

natives.cpp

@@ -38,11 +38,14 @@
 
 extern const sp_nativeinfo_t sourcetv_natives[];
 
+// Print to client consoles
 SH_DECL_MANUALHOOK0_void_vafmt(CBaseServer_BroadcastPrintf, 0, 0, 0);
 
 bool g_bHasClientPrintfOffset = false;
+SH_DECL_MANUALHOOK1_void(CBaseClient_FireGameEvent, 0, 0, 0, IGameEvent *);
 
 void SetupNativeCalls()
+bool g_bHasClientFireGameEventOffset = false;
 {
 	int offset = -1;
 	if (!g_pGameConf->GetOffset("CBaseServer::BroadcastPrintf", &offset) || offset == -1)
@@ -54,6 +57,17 @@ void SetupNativeCalls()
 		SH_MANUALHOOK_RECONFIGURE(CBaseServer_BroadcastPrintf, offset, 0, 0);
 		g_bHasClientPrintfOffset = true;
 	}
+
+	offset = -1;
+	if (!g_pGameConf->GetOffset("CBaseClient::FireGameEvent", &offset) || offset == -1)
+	{
+		smutils->LogError(myself, "Failed to get CBaseClient::FireGameEvent offset.");
+	}
+	else
+	{
+		SH_MANUALHOOK_RECONFIGURE(CBaseClient_FireGameEvent, offset, 0, 0);
+		g_bHasClientFireGameEventOffset = true;
+	}
 }
 
 // native SourceTV_GetServerInstanceCount();
@@ -786,6 +800,60 @@ static cell_t Native_KickClient(IPluginContext *pContext, const cell_t *params)
 	return 0;
 }
 
+// native SourceTV_PrintToChat(client, const String:format[], any:...);
+static cell_t Native_PrintToChat(IPluginContext *pContext, const cell_t *params)
+{
+	if (hltvserver == nullptr)
+		return 0;
+
+	cell_t client = params[1];
+	if (client < 1 || client > hltvserver->GetBaseServer()->GetClientCount())
+	{
+		pContext->ReportError("Invalid spectator client index %d.", client);
+		return 0;
+	}
+
+	HLTVClientWrapper *pClient = hltvserver->GetClient(client);
+	if (!pClient->IsConnected())
+	{
+		pContext->ReportError("Client %d is not connected.", client);
+		return 0;
+	}
+
+	char buffer[1024];
+	size_t len;
+	{
+		DetectExceptions eh(pContext);
+		len = smutils->FormatString(buffer, sizeof(buffer), pContext, params, 2);
+		if (eh.HasException())
+			return 0;
+	}
+
+	IGameEvent *msg = gameevents->CreateEvent("hltv_chat", true);
+	if (!msg)
+		return 0;
+
+#if SOURCE_ENGINE == SE_CSGO
+	wchar_t wBuffer[1024];
+	V_UTF8ToUnicode(buffer, wBuffer, sizeof(wBuffer));
+	msg->SetWString("text", wBuffer);
+#else
+	msg->SetString("text", buffer);
+#endif
+
+	if (g_bHasClientFireGameEventOffset)
+	{
+		void *pGameClient = pClient->BaseClient();
+		// The IClient vtable is +4 from the CBaseClient vtable due to multiple inheritance.
+		pGameClient = (void *)((intptr_t)pGameClient - 4);
+		SH_MCALL(pGameClient, CBaseClient_FireGameEvent)(msg);
+	}
+
+	gameevents->FreeEvent(msg);
+
+	return 0;
+}
+
 const sp_nativeinfo_t sourcetv_natives[] =
 {
 	{ "SourceTV_GetServerInstanceCount", Native_GetServerInstanceCount },
@@ -822,5 +890,6 @@ const sp_nativeinfo_t sourcetv_natives[] =
 	{ "SourceTV_GetClientIP", Native_GetClientIP },
 	{ "SourceTV_GetClientPassword", Native_GetClientPassword },
 	{ "SourceTV_KickClient", Native_KickClient },
+	{ "SourceTV_PrintToChat", Native_PrintToChat },
 	{ NULL, NULL },
 };

sourcetv_test.sp

@@ -34,6 +34,7 @@ public OnPluginStart()
 	RegConsoleCmd("sm_democonsole", Cmd_PrintDemoConsole);
 	RegConsoleCmd("sm_botcmd", Cmd_ExecuteStringCommand);
 	RegConsoleCmd("sm_speckick", Cmd_KickClient);
+	RegConsoleCmd("sm_specchatone", Cmd_PrintToChat);
 }
 
 public SourceTV_OnStartRecording(instance, const String:filename[])
@@ -413,7 +414,7 @@ public Action:Cmd_ExecuteStringCommand(client, args)
 
 public Action:Cmd_KickClient(client, args)
 {
-	if (args < 1)
+	if (args < 2)
 	{
 		ReplyToCommand(client, "Usage: sm_speckick <index> <reason>");
 		return Plugin_Handled;
@@ -430,3 +431,23 @@ public Action:Cmd_KickClient(client, args)
 	ReplyToCommand(client, "SourceTV kicking spectator %d with reason %s", iTarget, sMsg);
 	return Plugin_Handled;
 }
+
+public Action:Cmd_PrintToChat(client, args)
+{
+	if (args < 2)
+	{
+		ReplyToCommand(client, "Usage: sm_specchatone <index> <message>");
+		return Plugin_Handled;
+	}
+	
+	new String:sIndex[16], String:sMsg[1024];
+	GetCmdArg(1, sIndex, sizeof(sIndex));
+	StripQuotes(sIndex);
+	GetCmdArg(2, sMsg, sizeof(sMsg));
+	StripQuotes(sMsg);
+	
+	new iTarget = StringToInt(sIndex);
+	SourceTV_PrintToChat(iTarget, "%s", sMsg);
+	ReplyToCommand(client, "SourceTV sending chat message to spectator %d: %s", iTarget, sMsg);
+	return Plugin_Handled;
+}

sourcetvmanager.games.txt

@@ -63,6 +63,12 @@
 				"linux"	"65"
 			}
 			
+			"CBaseClient::FireGameEvent"
+			{
+				"windows"	"1"
+				"linux"	"2"
+			}
+			
 			"CBaseClient::Disconnect"
 			{
 				"linux"	"16"
@@ -230,6 +236,12 @@
 				"linux"	"56"
 			}
 			
+			"CBaseClient::FireGameEvent"
+			{
+				"windows"	"1"
+				"linux"	"2"
+			}
+			
 			"CBaseClient::Disconnect"
 			{
 				"linux"	"14"

sourcetvmanager.inc

@@ -393,6 +393,16 @@ native SourceTV_GetClientPassword(client, String:password[], maxlen);
  */
 native SourceTV_KickClient(client, const String:sReason[]);
 
+/**
+ * Print a message to a single client's chat.
+ * 
+ * @param client	The spectator client index.
+ * @param format	The format string.
+ * @param ...	Variable number of format string arguments.
+ * @noreturn
+ * @error	Invalid client index or not connected.
+ */
+native SourceTV_PrintToChat(client, const String:format[], any:...);
 
 /**
  * Called when a spectator wants to connect to the SourceTV server.
@@ -520,5 +530,6 @@ public __ext_stvmngr_SetNTVOptional()
 	MarkNativeAsOptional("SourceTV_GetClientIP");
 	MarkNativeAsOptional("SourceTV_GetClientPassword");
 	MarkNativeAsOptional("SourceTV_KickClient");
+	MarkNativeAsOptional("SourceTV_PrintToChat");
 }
 #endif