ui: blink song timer on playlist page if paused

as there is no other visual indication that the song is paused.

Also made 'blink' a static function variable in scr_main.c.

src/ui/scr_main.c

@@ -19,14 +19,14 @@
     int curr_val_edit;    // Temp value used in editing.
     int curr_val_type;    // Type of current selected value (song request / register)
     int curr_val_offset;  // Offset in song req/register table.
-    int blink;
-
     char tempstring[512];
 
 const char regmatrix_key[] = "+0/8 +1/9 +2/a +3/b +4/c +5/d +6/e +7/f";
 
 void drawreg(int val,int y,int x)
 {
+    static int blink;
+
     uint16_t v, a;
 
     colorsel_t c = COLOR_N_GREY;

src/ui/scr_playlist.c

@@ -69,6 +69,9 @@ void scr_playlist_input()
 
 void scr_playlist()
 {
+    static int blink;
+    int disp_timer;
+
     if(refresh & R_SCR_PLAYLIST)
     {
         refresh &= ~R_SCR_PLAYLIST;
@@ -83,20 +86,30 @@ void scr_playlist()
 
     int SongReq = Game->PlaylistSongID & 0x800 ? 8 : 0;
 
+    disp_timer=0;
     switch(Game->PlaylistControl)
     {
     case 0:
         SCRN(3,1,FCOLUMNS-2,"Playlist not currently active");
     default:
         break;
     case 1:
+        disp_timer=1;
     case 2:
         SCRN(3,1,FCOLUMNS-6,"Playing song %02d: %s",
              Game->PlaylistPosition+1,
              Game->Playlist[Game->PlaylistPosition].Title);
 
-        SCRN(3,FCOLUMNS-6,6,"%2.0f:%02.0f",
-             floor(QDrv->SongTimer[SongReq]/60),floor(fmod(QDrv->SongTimer[SongReq],60)));
+        if(Audio->Enabled && disp_timer)
+        {
+            blink++;
+            if(blink&0x20)
+                disp_timer=0;
+        }
+
+        if(disp_timer)
+            SCRN(3,FCOLUMNS-6,6,"%2.0f:%02.0f",
+                floor(QDrv->SongTimer[SongReq]/60),floor(fmod(QDrv->SongTimer[SongReq],60)));
         break;
     }