Add auto-kick for inactive players

src/netcode/d_clisrv.c

@@ -113,6 +113,7 @@ consvar_t cv_blamecfail = CVAR_INIT ("blamecfail", "Off", CV_SAVE|CV_NETVAR, CV_
 static CV_PossibleValue_t playbackspeed_cons_t[] = {{1, "MIN"}, {10, "MAX"}, {0, NULL}};
 consvar_t cv_playbackspeed = CVAR_INIT ("playbackspeed", "1", 0, playbackspeed_cons_t, NULL);
 
+consvar_t cv_idletime = CVAR_INIT ("idletime", "0", CV_SAVE, CV_Unsigned, NULL);
 consvar_t cv_dedicatedidletime = CVAR_INIT ("dedicatedidletime", "10", CV_SAVE, CV_Unsigned, NULL);
 
 void ResetNode(INT32 node)
@@ -492,6 +493,10 @@ static void Got_KickCmd(UINT8 **p, INT32 playernum)
 			HU_AddChatText(va("\x82*%s has been banned (%s)", player_names[pnum], reason), false);
 			kickreason = KR_BAN;
 			break;
+		case KICK_MSG_IDLE:
+			HU_AddChatText(va("\x82*%s has left the game (Inactive for too long)", player_names[pnum]), false);
+			kickreason = KR_TIMEOUT;
+			break;
 	}
 
 	if (pnum == consoleplayer)
@@ -507,6 +512,8 @@ static void Got_KickCmd(UINT8 **p, INT32 playernum)
 			M_StartMessage(M_GetText("Server closed connection\n(synch failure)\nPress ESC\n"), NULL, MM_NOTHING);
 		else if (msg == KICK_MSG_PING_HIGH)
 			M_StartMessage(M_GetText("Server closed connection\n(Broke ping limit)\nPress ESC\n"), NULL, MM_NOTHING);
+		else if (msg == KICK_MSG_IDLE)
+			M_StartMessage(M_GetText("Server closed connection\n(Inactive for too long)\nPress ESC\n"), NULL, MM_NOTHING);
 		else if (msg == KICK_MSG_BANNED)
 			M_StartMessage(M_GetText("You have been banned by the server\n\nPress ESC\n"), NULL, MM_NOTHING);
 		else if (msg == KICK_MSG_CUSTOM_KICK)
@@ -1267,6 +1274,30 @@ static void UpdatePingTable(void)
 	}
 }
 
+static void IdleUpdate(void)
+{
+	INT32 i;
+	if (!server || !netgame)
+		return;
+
+	for (i = 1; i < MAXPLAYERS; i++)
+	{
+		if (cv_idletime.value && playeringame[i] && playernode[i] != UINT8_MAX && !players[i].quittime && !players[i].spectator && i != serverplayer)
+		{
+			if (players[i].cmd.forwardmove || players[i].cmd.sidemove || players[i].cmd.buttons)
+				netnodes[i].lastinput = gametime;
+
+			if (gametime - netnodes[i].lastinput > cv_idletime.value * TICRATE)
+			{
+				netnodes[i].lastinput = gametime;
+				SendKick(i, KICK_MSG_IDLE | KICK_MSG_KEEP_BODY);
+			}
+		}
+		else
+			netnodes[i].lastinput = gametime;
+	}
+}
+
 // Handle timeouts to prevent definitive freezes from happenning
 static void HandleNodeTimeouts(void)
 {
@@ -1299,6 +1330,8 @@ void NetKeepAlive(void)
 
 	GetPackets();
 
+	IdleUpdate();
+
 #ifdef MASTERSERVER
 	MasterClient_Ticker();
 #endif
@@ -1419,6 +1452,8 @@ void NetUpdate(void)
 
 	GetPackets(); // get packet from client or from server
 
+	IdleUpdate();
+
 	// The client sends the command after receiving from the server
 	// The server sends it before because this is better in single player
 

src/netcode/d_clisrv.h

@@ -48,7 +48,7 @@ typedef enum
 	KR_TIMEOUT       = 4, //Connection Timeout
 	KR_BAN           = 5, //Banned by server
 	KR_LEAVE         = 6, //Quit the game
-
+	KR_IDLE          = 7, //Remained still for too long
 } kickreason_t;
 
 /* the max number of name changes in some time period */
@@ -73,7 +73,7 @@ extern UINT32 realpingtable[MAXPLAYERS];
 extern UINT32 playerpingtable[MAXPLAYERS];
 extern tic_t servermaxping;
 
-extern consvar_t cv_netticbuffer, cv_resynchattempts, cv_blamecfail, cv_playbackspeed, cv_dedicatedidletime;
+extern consvar_t cv_netticbuffer, cv_resynchattempts, cv_blamecfail, cv_playbackspeed, cv_idletime, cv_dedicatedidletime;
 
 // Used in d_net, the only dependence
 void D_ClientServerInit(void);

src/netcode/d_net.h

@@ -43,6 +43,7 @@ typedef struct netnode_s
 {
 	boolean ingame; // set false as nodes leave game
 	tic_t freezetimeout; // Until when can this node freeze the server before getting a timeout?
+	tic_t lastinput; // the last tic the player has made any input
 
 	SINT8 player;
 	SINT8 player2; // say the numplayer for this node if any (splitscreen)

src/netcode/d_netcmd.c

@@ -601,6 +601,7 @@ void D_RegisterServerCommands(void)
 	CV_RegisterVar(&cv_showjoinaddress);
 	CV_RegisterVar(&cv_blamecfail);
 	CV_RegisterVar(&cv_dedicatedidletime);
+	CV_RegisterVar(&cv_idletime);
 
 	COM_AddCommand("ping", Command_Ping_f, COM_LUA);
 	CV_RegisterVar(&cv_nettimeout);

src/netcode/protocol.h

@@ -331,6 +331,7 @@ typedef struct
 #define KICK_MSG_PING_HIGH   6
 #define KICK_MSG_CUSTOM_KICK 7
 #define KICK_MSG_CUSTOM_BAN  8
+#define KICK_MSG_IDLE        9
 #define KICK_MSG_KEEP_BODY   0x80
 
 #endif