From 8ab97fbbf07965c4b011ed513194a9db5e15cdd1 Mon Sep 17 00:00:00 2001
From: Bohdan Shulyar <mars873@gmail.com>
Date: Sat, 13 Nov 2021 23:55:15 +0200
Subject: [PATCH] engine: client: Add svc_exec support (#671)

* Add svc_exec support

* engine: client: add gamedir check for svc_exec
---
 engine/client/cl_debug.c  |  1 +
 engine/client/cl_parse.c  | 50 +++++++++++++++++++++++++++++++++++++++
 engine/common/dedicated.c |  2 +-
 engine/common/protocol.h  |  3 ++-
 4 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/engine/client/cl_debug.c b/engine/client/cl_debug.c
index dcff1263..7b019daa 100644
--- a/engine/client/cl_debug.c
+++ b/engine/client/cl_debug.c
@@ -86,6 +86,7 @@ const char *svc_strings[svc_lastmsg+1] =
 	"svc_resourcelocation",
 	"svc_querycvarvalue",
 	"svc_querycvarvalue2",
+	"svc_exec",
 };
 
 typedef struct
diff --git a/engine/client/cl_parse.c b/engine/client/cl_parse.c
index 917da93c..8b931009 100644
--- a/engine/client/cl_parse.c
+++ b/engine/client/cl_parse.c
@@ -1925,6 +1925,53 @@ void CL_ParseCvarValue2( sizebuf_t *msg )
 	}
 }
 
+/*
+==============
+CL_ParseExec
+
+Exec map/class specific configs
+==============
+*/
+void CL_ParseExec( sizebuf_t *msg )
+{
+	qboolean is_class;
+	int class_idx;
+	string mapname;
+	const char *class_cfgs[] = {
+		"",
+		"exec scout.cfg\n",
+		"exec sniper.cfg\n",
+		"exec soldier.cfg\n",
+		"exec demoman.cfg\n",
+		"exec medic.cfg\n",
+		"exec hwguy.cfg\n",
+		"exec pyro.cfg\n",
+		"exec spy.cfg\n",
+		"exec engineer.cfg\n",
+		"",
+		"exec civilian.cfg\n"
+	};
+
+	is_class = MSG_ReadByte( msg );
+
+	if ( is_class )
+	{
+		class_idx = MSG_ReadByte( msg );
+
+		if ( class_idx >= 0 && class_idx <= 11 && !Q_stricmp( GI->gamefolder, "tfc" ) )
+			Cbuf_AddText( class_cfgs[class_idx] );
+	}
+	else if ( !Q_stricmp( GI->gamefolder, "tfc" ) )
+	{
+		Cbuf_AddText( "exec mapdefault.cfg\n" );
+
+		COM_FileBase( clgame.mapname, mapname );
+
+		if ( COM_CheckString( mapname ) )
+			Cbuf_AddText( va( "exec %s.cfg\n", mapname ) );
+	}
+}
+
 /*
 ==============
 CL_DispatchUserMessage
@@ -2334,6 +2381,9 @@ void CL_ParseServerMessage( sizebuf_t *msg, qboolean normal_message )
 		case svc_querycvarvalue2:
 			CL_ParseCvarValue2( msg );
 			break;
+		case svc_exec:
+			CL_ParseExec( msg );
+			break;
 		default:
 			CL_ParseUserMessage( msg, cmd );
 			cl.frames[cl.parsecountmod].graphdata.usr += MSG_GetNumBytesRead( msg ) - bufStart;
diff --git a/engine/common/dedicated.c b/engine/common/dedicated.c
index ff56a840..965c75c7 100644
--- a/engine/common/dedicated.c
+++ b/engine/common/dedicated.c
@@ -80,7 +80,7 @@ const char *svc_strings[256] =
 	"svc_unused56",
 	"svc_querycvarvalue",
 	"svc_querycvarvalue2",
-	"svc_unused59",
+	"svc_exec",
 	"svc_unused60",
 	"svc_unused61",
 	"svc_unused62",
diff --git a/engine/common/protocol.h b/engine/common/protocol.h
index f2321459..bfaf29bb 100644
--- a/engine/common/protocol.h
+++ b/engine/common/protocol.h
@@ -78,7 +78,8 @@ GNU General Public License for more details.
 #define svc_resourcelocation		56	// [string]
 #define svc_querycvarvalue		57	// [string]
 #define svc_querycvarvalue2		58	// [string][int] (context)
-#define svc_lastmsg			58	// start user messages at this point
+#define svc_exec				59	// [byte][...]
+#define svc_lastmsg			59	// start user messages at this point
 
 // client to server
 #define clc_bad			0	// immediately drop client when received