add new periodic (one-second) timer, and commandline option that sets

what percent of the times that timer fires will result in a move being
undone.  Will be used to interject random out-of-order undos into
games played for testing.  (Currently the tests fail when this is
enabled; I need to fix that.)

xwords4/linux/cursesmain.c

@@ -1734,6 +1734,7 @@ cursesmain( XP_Bool isServer, LaunchParams* params )
 
 #ifdef USE_GLIBLOOP
     cursesListenOnSocket( &g_globals, 0, handle_stdin );
+    setOneSecondTimer( &g_globals.cGlobals );
 #else
     cursesListenOnSocket( &g_globals, 0 ); /* stdin */
 
@@ -1764,7 +1765,6 @@ cursesmain( XP_Bool isServer, LaunchParams* params )
 #endif
     };
 
-
     if ( !!params->pipe && !!params->fileName ) {
         read_pipe_then_close( &g_globals.cGlobals, &procs );
     } else if ( !!params->nbs && !!params->fileName ) {

xwords4/linux/gtkmain.c

@@ -2388,6 +2388,8 @@ gtkmain( LaunchParams* params, int argc, char *argv[] )
     g_signal_connect( GTK_OBJECT(drawing_area), "button_release_event",
                       G_CALLBACK(button_release_event), &globals );
 
+    setOneSecondTimer( &globals.cGlobals );
+
 #ifdef KEY_SUPPORT
 # ifdef KEYBOARD_NAV
     g_signal_connect( GTK_OBJECT(window), "key_press_event",

xwords4/linux/linuxmain.c

@@ -370,6 +370,36 @@ do_nbs_then_close( CommonGlobals* cGlobals, const TransportProcs* procs )
     LOG_RETURN_VOID();
 } /* do_nbs_then_close */
 
+#ifdef USE_GLIBLOOP
+static gboolean
+secondTimerFired( gpointer data )
+{
+    CommonGlobals* cGlobals = (CommonGlobals*)data;
+
+    /* Undo */
+    XWGame* game = &cGlobals->game;
+    if ( !!game->server && !!game->board ) {
+        XP_U16 undoRatio = cGlobals->params->undoRatio;
+        if ( 0 != undoRatio ) {
+            if ( (XP_RANDOM() % 100) < undoRatio ) {
+                XP_LOGF( "%s: calling server_handleUndo", __func__ );
+                if ( server_handleUndo( game->server ) ) {
+                    board_draw( game->board );
+                }
+            } 
+        }
+    }
+
+    return TRUE;
+}
+
+void
+setOneSecondTimer( CommonGlobals* cGlobals )
+{
+    (void)g_timeout_add_seconds( 1, secondTimerFired, cGlobals );
+}
+#endif
+
 typedef enum {
     CMD_SKIP_GAMEOVER
     ,CMD_SHOW_OTHERSCORES
@@ -436,6 +466,9 @@ typedef enum {
     ,CMD_SLOWROBOT
     ,CMD_TRADEPCT
 #endif
+#ifdef USE_GLIBLOOP		/* just because hard to implement otherwise */
+    ,CMD_UNDOPCT
+#endif
 #if defined PLATFORM_GTK && defined PLATFORM_NCURSES
     ,CMD_GTK
     ,CMD_CURSES
@@ -521,6 +554,9 @@ static CmdInfoRec CmdInfoRecs[] = {
     ,{ CMD_SLOWROBOT, true, "slow-robot", "make robot slower to test network" }
     ,{ CMD_TRADEPCT, true, "trade-pct", "what pct of the time should robot trade" }
 #endif
+#ifdef USE_GLIBLOOP
+    ,{ CMD_UNDOPCT, true, "undo-pct", "each second, what are the odds of doing an undo" }
+#endif
 #if defined PLATFORM_GTK && defined PLATFORM_NCURSES
     ,{ CMD_GTK, false, "gtk", "use GTK for display" }
     ,{ CMD_CURSES, false, "curses", "use curses for display" }
@@ -1592,6 +1628,15 @@ main( int argc, char** argv )
             break;
 #endif
 
+#ifdef USE_GLIBLOOP
+	case CMD_UNDOPCT:
+            mainParams.undoRatio = atoi( optarg );
+            if ( mainParams.undoRatio < 0 || mainParams.undoRatio > 100 ) {
+                usage(argv[0], "must be 0 <= n <= 100" );
+            }
+	    break;
+#endif
+
 #if defined PLATFORM_GTK && defined PLATFORM_NCURSES
         case CMD_GTK:
             useCurses = XP_FALSE;

xwords4/linux/linuxmain.h

@@ -81,4 +81,10 @@ void read_pipe_then_close( CommonGlobals* cGlobals,
 void do_nbs_then_close( CommonGlobals* cGlobals, 
                         const TransportProcs* procs );
 
+#ifdef USE_GLIBLOOP
+void setOneSecondTimer( CommonGlobals* cGlobals );
+#else
+# define setOneSecondTimer( cGlobals )
+#endif
+
 #endif

xwords4/linux/main.h

@@ -58,6 +58,7 @@ typedef struct LaunchParams {
     XP_U16 gameSeed;
     XP_S16 dropNthRcvd;         /* negative means use for random calc */
     XP_U16 nPacketsRcvd;        /* toward dropNthRcvd */
+    XP_U16 undoRatio;
     XP_Bool askNewGame;
     XP_S16 quitAfter;
     XP_Bool sleepOnAnchor;