New command show updates:

(show): New sub-command.
(player_coms): Update its c_form.
(show_updates, fmttime2822): New.

(vers): Show game_days and game_hours.

(upda): Mark obsolete and point to show updates.
(vers): Point to show rather than update.

Rewrite much of info zdone.

include/prototypes.h

@@ -655,6 +655,7 @@ extern void show_sect_stats(int);
 extern void show_sect_capab(int);
 extern void show_item(int);
 extern void show_news(int);
+extern void show_updates(int);
 /* shpsub.c */
 extern void shp_sel(struct nstr_item *, struct emp_qelem *);
 extern void shp_nav(struct emp_qelem *, double *, double *, int *, natid);

info/disable.t

@@ -2,8 +2,8 @@
 .NA disable "Disable Updates"
 .LV Expert
 .SY "disable"
-No updates will fire if you disable them.  "UPDATES ARE DISABLED" will
-show up in the output of the "update" command.
+No updates will fire if you disable them.  The \*Qshow updates\*U
+command will report the fact.
 .s1
 Disabling updates this way does not stop the Empire clock.  Stuff
 using the clock, like BTU growth, continues normally.  Should a
@@ -13,6 +13,6 @@ between updates.  This effectively stops the clock.
 .s1
 You should not use this command as a tool for implementing your update
 schedule!  Enabling and disabling updates by hand is far too error
-prone, and your players can't trust the update command to find out
+prone, and your players can't trust the show command to find out
 when the next update really is.  Use the update schedule file instead.
-.SA "update, disable, Time, Deity"
+.SA "disable, show, Time, Deity"

info/enable.t

@@ -3,4 +3,4 @@
 .LV Expert
 .SY "enable"
 If updates have been disabled, then this will enable them again.
-.SA "update, enable, force, Deity"
+.SA "disable, show, force, Deity"

info/show.t

@@ -3,11 +3,12 @@
 .LV Basic
 .SY "show <land|nuke|plane|sector|ship> [b|s|c] [tech]"
 .SY "show <bridge|item|news|tower>"
+.SY "show <updates> [number]"
 The show command shows characteristics of sectors, units (ships,
 planes, land units and nukes), bridges (spans and towers), items and
-news.
+news, as well as information on updates.
 .s1
-The format of each output is more fully described in separate info
+Characteristics are more fully described in separate info
 pages (Ship-types, Nuke-types, etc.).
 .s1
 For sectors and units, a
@@ -35,4 +36,4 @@ Printing for tech level '325'
 75kt  fusion     3  90   3  320 106 $  20000 
 .FI
 .s1
-.SA "Ship-types, Nuke-types, Plane-types, Unit-types, Sector-types, Ships, Planes, LandUnits, Nukes, Bridges, Item-types, newspaper"
+.SA "Ship-types, Nuke-types, Plane-types, Unit-types, Sector-types, Ships, Planes, LandUnits, Nukes, Bridges, Item-types, newspaper, Updates"

info/update.t

@@ -5,4 +5,4 @@
 The update command shows you when the next update will occur, and
 describes the current update policies.
 .sp
-.SA "zdone, Updates"
+.SA "show, zdone, Obsolete"

info/version.t

@@ -19,8 +19,7 @@ World size is 64 by 32.
 There can be up to 99 countries.
 By default, countries use their own coordinate system.
 
-An Empire time unit is 10 seconds long.
-Use the 'update' command to find out the time of the next update.
+Use the 'show' command to find out the time of the next update.
 The current time is Tue Jul 10 23:09:03.
 An update consists of 60 empire time units.
 Each country is allowed to be logged in 1440 minutes a day.

info/zdone.t

@@ -11,20 +11,25 @@ for an update.
 .s1
 "check" checks to see what your zdone state is.
 .s1
-The command will also show you how many countries want
-an update.  There are 3 possible update policies which could
-be set in this game.  The update policy is shown in the update command.
+The command will also show you how many countries want an update.  The
+number of ready countries required for a demand update to happen is
+configurable, and may be seen in the \*Qshow updates\*U command.
 .s1
-Your zdone state is cleared when an update occurs.
+There are three possible update policies which could be set in this
+game:
 .s1
 1. No demand updates.  If so, then this command is useless.
 .s1
-2. Updates occur upon demand, right after the last person sets
-zdone.  The threshold at which a demand update occurs is configurable,
-and may be seen in the update command.
+2. Demand updates occur right after the last required country sets
+zdone.
 .s1
-3. Demand updates occur at specific times.  If enough countries
-have set zdone at one of those times, then an update will occur.
-The times may be seen in the update command.
+3. Demand updates occur according to the update schedule.  If enough
+countries have set zdone by the scheduled time, then an update will
+occur.  The update schedule may be seen in the \*Qshow updates\*U
+command.
+.s1
+Your zdone state is cleared when an update occurs.
+.s1
+The \*Qshow updates\*U command shows update policy and schedule.
 .sp
-.SA "update, Playing"
+.SA "show, Updates"

src/lib/commands/show.c

@@ -51,7 +51,7 @@ show(void)
     int rlev;
 
     if (!(p = getstarg(player->argp[1],
-		       "Describe what (plane, nuke, bridge, ship, sect, land unit, tower, item)? ",
+		       "Show what (bridge, item, land, nuke, plane, sect, ship, tower, updates)?",
 		       buf))
 	|| !*p)
 	return RET_SYN;
@@ -113,9 +113,13 @@ show(void)
 	    cfunc = show_ship_capab;
 	}
 	break;
+    case 'u':
+	show_updates(player->argp[2] ? atoi(player->argp[2]) : 8);
+	return RET_OK;
     default:
 	return RET_SYN;
     }
+
     if (!(p = getstarg(player->argp[2],
 		       "Build, stats, or capability data (b,s,c)? ", buf))
 	|| !*p)

src/lib/commands/upda.c

@@ -95,5 +95,7 @@ upda(void)
     if (*game_hours != 0)
 	pr("Game hours are: %s\n", game_hours);
 
+    pr("\nThis command is obsolete and will go away in a future version.\n"
+       "Please use \"show updates\".");
     return 0;
 }

src/lib/commands/vers.c

@@ -61,11 +61,15 @@ vers(void)
     pr("By default, countries use %s coordinate system.\n",
        (players_at_00) ? "the deity's" : "their own");
     pr("\n");
-    pr("Use the 'update' command to find out the time of the next update.\n");
+    pr("Use the 'show' command to find out the time of the next update.\n");
     pr("The current time is %19.19s.\n", ctime(&now));
     pr("An update consists of %d empire time units.\n", etu_per_update);
     pr("Each country is allowed to be logged in %d minutes a day.\n",
        m_m_p_d);
+    if (*game_days != 0)
+	pr("Game days are %s\n", game_days);
+    if (*game_hours != 0)
+	pr("Game hours are %s\n", game_hours);
     pr("It takes %.2f civilians to produce a BTU in one time unit.\n",
        (1.0 / (btu_build_rate * 100.0)));
     pr("\n");

src/lib/player/empmod.c

@@ -229,7 +229,9 @@ struct cmndstr player_coms[] = {
     {"shark <LOAN>", 25, shark, C_MOD, NORM + MONEY + CAP},
     {"ship <SHIPS>", 0, shi, 0, NORM},
     {"shoot <c|u> <SECTS> <NUMBER>", 3, shoo, C_MOD, NORM + MONEY + CAP},
-    {"show <TYPE|\"bridge\"|\"tower\"> <\"build\"|\"stats\"|\"cap\"> [<tech>]",
+    {"show <TYPE> <\"build\"|\"stats\"|\"cap\"> [<tech>]\n"
+     "\tshow <bridge|tower>\n"
+     "\tshow updates [<NUM>]>",
      0, show, 0, VIS},
     {"shutdown <minutes> <disable update?>", 0, shut, 0, GOD},
     {"sinfrastructure <SECTS>", 0, sinfra, 0, VIS},

src/lib/subs/show.c

@@ -32,13 +32,14 @@
  *     Jeff Bailey, 1990
  *     Steve McClure, 1996
  *     Ron Koenderink, 2005
- *     Markus Armbruster, 2006
+ *     Markus Armbruster, 2006-2007
  */
 
 #include <config.h>
 
 #include <math.h>
 #include "file.h"
+#include "game.h"
 #include "item.h"
 #include "land.h"
 #include "nat.h"
@@ -50,8 +51,11 @@
 #include "product.h"
 #include "prototypes.h"
 #include "sect.h"
+#include "server.h"
 #include "ship.h"
 
+static char *fmttime2822(time_t);
+
 struct look_list {
     union {
 	struct lchrstr *lp;
@@ -654,3 +658,66 @@ show_news(int tlev)
 	    pr("    %s\n", rpt[i].r_newstory[j]);
     }
 }
+
+/*
+ * Show update policy and up to N scheduled updates.
+ */
+void
+show_updates(int n)
+{
+    struct gamestr *game = game_tick_tick();
+    int demand = 0;
+    int i;
+
+    pr("%s, Turn %d, ETU %d\n", fmttime2822(time(NULL)),
+       game->game_turn, game->game_tick);
+
+    if (update_time[0]) {
+	if (update_demand == UPD_DEMAND_SCHED) {
+	    pr("Demand updates occur according to schedule:\n");
+	    demand = 1;
+	} else
+	    pr("Updates occur according to schedule:\n");
+	for (i = 0; i < n && update_time[i]; i++)
+	    pr("%3d.  %s\n", game->game_turn + i,
+	       fmttime2822(update_time[i]));
+	if (update_window) {
+	    pr("Updates occur within %d seconds after the scheduled time\n",
+	       update_window);
+	}
+    } else
+	pr("There are no updates scheduled.\n");
+
+    if (update_demand == UPD_DEMAND_ASYNC) {
+	pr("Demand updates occur right after the demand is set.\n");
+	if (*update_demandtimes != 0) {
+	    pr("Demand updates are allowed during: %s\n",
+	       update_demandtimes);
+	}
+	demand = 1;
+    }
+
+    if (demand) {
+	pr("Demand updates require %d country(s) to want one.\n",
+	   update_wantmin);
+    }
+
+    if (updates_disabled())
+	pr("\nUPDATES ARE DISABLED!\n");
+}
+
+/*
+ * Return T formatted according to RFC 2822.
+ * The return value is statically allocated and overwritten on
+ * subsequent calls.
+ */
+static char *
+fmttime2822(time_t t)
+{
+    static char buf[32];
+    int n = strftime(buf, sizeof(buf), "%a, %d %b %Y %T %z",
+		     localtime(&t));
+    if (CANT_HAPPEN(n == 0))
+	buf[0] = 0;
+    return buf;
+}