feat: custom cfg coop messages

for Nid to be able to send remote commands
can also help with the automation of resets/other coop things

(nid, on the receiving end, do `sar_on_cfg_message sar_expand $_sar_cfg_message` and `sar_cfg_message <thing>` to send)
(ONLY IF YOU TRUST PARTNER) (with master srconfigs you can add `cond ?partner=amj` after doing `partner_add <name>`)

docs/cvars.md

@@ -119,6 +119,7 @@
 |sar_cam_setang|cmd|sar_cam_setang \<pitch> \<yaw> [roll] - sets camera angle (requires camera Drive Mode)|
 |sar_cam_setfov|cmd|sar_cam_setfov \<fov> - sets camera field of view (requires camera Drive Mode)|
 |sar_cam_setpos|cmd|sar_cam_setpos \<x> \<y> \<z> - sets camera position (requires camera Drive Mode)|
+|sar_cfg_message|cmd|sar_cfg_message \<message> - sends a config message to the other player in coop|
 |sar_challenge_autostop|0|Automatically stops recording demos when the leaderboard opens after a CM run. If 2, automatically appends the run time to the demo name.|
 |sar_challenge_autosubmit_reload_api_key|cmd|sar_challenge_autosubmit_reload_api_key - reload the board.portal2.sr API key from its file.|
 |sar_chat|cmd|sar_chat - open the chat HUD|
@@ -320,6 +321,9 @@
 |sar_mtrigger_legacy_format|!seg -> !tt (!st)|Formatting of the text that is displayed in the chat (!map - for map name, !seg - for segment name, !tt - for total time, !st - for split time).|
 |sar_mtrigger_legacy_textcolor|255 176 0|The color of the text that is displayed in the chat.|
 |sar_nextdemo|cmd|sar_nextdemo - plays the next demo in demo queue|
+|sar_on_cfg_message|cmd|sar_on_cfg_message \<command> [args]... - registers a command to be run when partner sends a custom message (_sar_cfg_message svar)|
+|sar_on_cfg_message_clear|cmd|sar_on_cfg_message_clear - clears commands registered on event "cfg_message"|
+|sar_on_cfg_message_list|cmd|sar_on_cfg_message_list - lists commands registered on event "cfg_message"|
 |sar_on_config_exec|cmd|sar_on_config_exec \<command> [args]... - registers a command to be run on config.cfg exec|
 |sar_on_config_exec_clear|cmd|sar_on_config_exec_clear - clears commands registered on event "config_exec"|
 |sar_on_config_exec_list|cmd|sar_on_config_exec_list - lists commands registered on event "config_exec"|

src/Event.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <functional>
+#include <string>
 
 #define _ON_INIT1(x)                                    \
 	static void _sar_init_fn_##x();                        \
@@ -46,6 +47,7 @@ namespace Event {
 		TAS_START,
 		TAS_END,
 		MAYBE_AUTOSUBMIT,
+		CFG_MESSAGE,
 	};
 
 	template <EventType E>
@@ -88,6 +90,11 @@ namespace Event {
 		bool pb;
 	};
 
+	template <>
+	struct EventData<CFG_MESSAGE> {
+		std::string message;
+	};
+
 	template <EventType E>
 	struct _EventReg {
 		std::function<void(EventData<E>)> cb;

src/Features/ConfigPlus.cpp

@@ -1,4 +1,5 @@
 #include "Event.hpp"
+#include "Features/NetMessage.hpp"
 #include "Features/Session.hpp"
 #include "Modules/Client.hpp"
 #include "Modules/Engine.hpp"
@@ -19,6 +20,7 @@
 #endif
 
 #define PERSISTENT_SVAR_FILENAME "svars_persist"
+#define CFG_MESSAGE_TYPE "cfgmessage"
 
 static std::map<std::string, std::string> g_svars;
 static std::unordered_set<std::string> g_persistentSvars;
@@ -727,6 +729,30 @@ CON_COMMAND_F(sar_get_partner_id, "sar_get_partner_id - Prints your coop partner
 	console->Print("%s\n", engine->GetPartnerSteamID32().c_str());
 }
 
+CON_COMMAND_F(sar_cfg_message, "sar_cfg_message <message> - sends a config message to the other player in coop\n", FCVAR_DONTRECORD) {
+	if (!engine->IsCoop() || engine->IsSplitscreen()) {
+		console->Print("This command only works in online co-op.\n");
+		return;
+	}
+
+	if (args.ArgC() < 2) {
+		return console->Print(sar_cfg_message.ThisPtr()->m_pszHelpString);
+	}
+
+	auto str = Utils::ArgContinuation(args, 1);
+	NetMessage::SendMsg(CFG_MESSAGE_TYPE, str, strlen(str));
+}
+
+ON_INIT {
+	NetMessage::RegisterHandler(CFG_MESSAGE_TYPE, +[](const void *data, size_t size) {
+		auto msg = std::string((char *)data, size);
+		// be kinda safe
+		msg.erase(std::remove(msg.begin(), msg.end(), '"'), msg.end());
+		msg.erase(std::remove(msg.begin(), msg.end(), ';'), msg.end());
+		Event::Trigger<Event::CFG_MESSAGE>({msg});
+	});
+}
+
 CON_COMMAND_F(cond, "cond <condition> <command> [args]... - runs a command only if a given condition is met\n", FCVAR_DONTRECORD) {
 	if (args.ArgC() < 3) {
 		return console->Print(cond.ThisPtr()->m_pszHelpString);
@@ -823,6 +849,7 @@ MK_SAR_ON(tas_start, "when TAS script playback starts", true)
 MK_SAR_ON(tas_end, "when TAS script playback ends", true)
 MK_SAR_ON(pb, "when auto-submitter detects PB", true)
 MK_SAR_ON(not_pb, "when auto-submitter detects not PB", true)
+MK_SAR_ON(cfg_message, "when partner sends a custom message (_sar_cfg_message svar)", true)
 
 ON_EVENT_P(SESSION_START, 1000000) {
 	RUN_EXECS(load);
@@ -865,6 +892,10 @@ ON_EVENT(MAYBE_AUTOSUBMIT) {
 	if (event.pb) RUN_EXECS(pb);
 	else RUN_EXECS(not_pb);
 }
+ON_EVENT(CFG_MESSAGE) {
+	SetSvar("_sar_cfg_message", event.message);
+	RUN_EXECS(cfg_message);
+}
 
 struct Seq {
 	std::queue<std::string> commands;