Support pausing demo playback.

This is done by adding an extra 'demopaused' flag to client_static_t, separate from cl.paused because we don't want a svc_setpause inside the demo (caused by the player pausing during recording) to actually pause demo playback. The only potential failure case is, if the demo contains a svc_stufftext of the command "pause", the demo will pause itself when being played.

git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@1147 af15c1b1-3010-417e-b628-4374ebc0bcbd

quakespasm/Quake/cl_demo.c

@@ -54,6 +54,7 @@ void CL_StopPlayback (void)
 
 	fclose (cls.demofile);
 	cls.demoplayback = false;
+	cls.demopaused = false;
 	cls.demofile = NULL;
 	cls.state = ca_disconnected;
 
@@ -90,6 +91,9 @@ static int CL_GetDemoMessage (void)
 	int	r, i;
 	float	f;
 
+	if (cls.demopaused)
+		return 0;
+
 	// decide if it is time to grab the next message
 	if (cls.signon == SIGNONS)	// always grab until fully connected
 	{
@@ -436,6 +440,7 @@ void CL_PlayDemo_f (void)
 		cls.forcetrack = -cls.forcetrack;
 
 	cls.demoplayback = true;
+	cls.demopaused = false;
 	cls.state = ca_connected;
 
 // get rid of the menu and/or console

quakespasm/Quake/cl_main.c

@@ -142,6 +142,7 @@ void CL_Disconnect (void)
 	}
 
 	cls.demoplayback = cls.timedemo = false;
+	cls.demopaused = false;
 	cls.signon = 0;
 	cl.intermission = 0;
 }

quakespasm/Quake/client.h

@@ -116,6 +116,11 @@ typedef struct
 // entering a map (and clearing client_state_t)
 	qboolean	demorecording;
 	qboolean	demoplayback;
+
+// did the user pause demo playback? (separate from cl.paused because we don't
+// want a svc_setpause inside the demo to actually pause demo playback).
+	qboolean	demopaused;
+
 	qboolean	timedemo;
 	int		forcetrack;		// -1 = use normal cd track
 	FILE		*demofile;

quakespasm/Quake/host_cmd.c

@@ -1408,6 +1408,13 @@ Host_Pause_f
 */
 void Host_Pause_f (void)
 {
+//ericw -- demo pause support (inspired by MarkV)
+	if (cls.demoplayback && cls.demonum == -1) // Don't allow startdemos to be paused
+	{
+		cls.demopaused = !cls.demopaused;
+		cl.paused = cls.demopaused;
+		return;
+	}
 
 	if (cmd_source == src_command)
 	{