From 43e162711e94293935e5eacf017c6cd0fa4c948b Mon Sep 17 00:00:00 2001
From: Kawe Mazidjatari <48657826+Mauler125@users.noreply.github.com>
Date: Sat, 9 Nov 2024 01:22:43 +0100
Subject: [PATCH] Core: add option to run the game fully offline

The game can now be ran fully offline by providing '-offline' to the command line arguments. The engine will auto execute 'system/autoexec_offline.cfg' which overrides other autoexecs to ensure the game runs offline. The system/autoexec_offline.cfg file only overrides the variables it sets.
---
 src/core/init.cpp         | 12 +++++++++++-
 src/engine/host_state.cpp |  4 ++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/core/init.cpp b/src/core/init.cpp
index 7b867923..8017a3fb 100644
--- a/src/core/init.cpp
+++ b/src/core/init.cpp
@@ -250,7 +250,17 @@ void Systems_Init()
 
 #ifdef DEDICATED
 	InitCommandLineParameters();
-#endif // DEDICATED
+#else
+	// Must append these here if user specified the -offline parameter so the
+	// engine can take care of disabling the platform systems on time. The
+	// dedicated server already has these disabled, so we don't need to check
+	// for it here.
+	if (CommandLine()->CheckParm("-offline"))
+	{
+		CommandLine()->AppendParm("-noorigin", "");
+		CommandLine()->AppendParm("-nodiscord", "");
+	}
+#endif// DEDICATED
 
 	// Script context registration callbacks.
 	ScriptConstantRegister_Callback = ScriptConstantRegistrationCallback;
diff --git a/src/engine/host_state.cpp b/src/engine/host_state.cpp
index a3042ffe..075f8a4b 100644
--- a/src/engine/host_state.cpp
+++ b/src/engine/host_state.cpp
@@ -421,6 +421,10 @@ void CHostState::LoadConfig(void) const
 			Cbuf_AddText(Cbuf_GetCurrentPlayer(), "exec tools/rcon_client_dev.cfg\n", cmd_source_t::kCommandSrcCode);
 #endif // !DEDICATED
 		}
+		if (CommandLine()->CheckParm("-offline"))
+		{
+			Cbuf_AddText(Cbuf_GetCurrentPlayer(), "exec system/autoexec_offline.cfg\n", cmd_source_t::kCommandSrcCode);
+		}
 #ifndef CLIENT_DLL
 		Cbuf_AddText(Cbuf_GetCurrentPlayer(), "exec liveapi.cfg\n", cmd_source_t::kCommandSrcCode);
 #endif //!CLIENT_DLL