Update copyright notice

[empserver] / src / lib / subs / lostsub.c

diff --git a/src/lib/subs/lostsub.c b/src/lib/subs/lostsub.c
index ce875f85ddc8516b99bf0046d4cb33fc10c2778a..f568b5c030b9b71ed24e43e2160b7cf62fd4e9c4 100644 (file)
--- a/src/lib/subs/lostsub.c
+++ b/src/lib/subs/lostsub.c
@@ -1,11 +1,11 @@
 /*
  *  Empire - A multi-player, client/server Internet based war game.
- *  Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
- *                           Ken Stevens, Steve McClure
+ *  Copyright (C) 1986-2012, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ *                Ken Stevens, Steve McClure, Markus Armbruster
  *
- *  This program is free software; you can redistribute it and/or modify
+ *  Empire is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
+ *  the Free Software Foundation, either version 3 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
@@ -14,64 +14,64 @@
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  *  ---
  *
- *  See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
- *  related information and legal notices. It is expected that any future
- *  projects/authors will amend these files as needed.
+ *  See files README, COPYING and CREDITS in the root of the source
+ *  tree for related information and legal notices.  It is expected
+ *  that future projects/authors will amend these files as needed.
  *
  *  ---
  *
  *  lostsub.c: Subroutines for lost items
- * 
+ *
  *  Known contributors to this file:
  *     Steve McClure, 1997
+ *     Markus Armbruster, 2008
  */
 
-#include "misc.h"
-#include "player.h"
-#include "var.h"
+#include <config.h>
+
 #include "file.h"
-#include "land.h"
-#include "ship.h"
-#include "xy.h"
-#include "nat.h"
-#include "deity.h"
-#include "nsc.h"
-#include "plane.h"
 #include "lost.h"
-#include "prototypes.h"
+#include "misc.h"
+#include "optlist.h"
+
+static int findlost(int, natid, int, coord, coord, int);
+
+/*
+ * Record item ID of type TYPE changed owner from EXOWN to OWN at X, Y.
+ */
+void
+lost_and_found(int type, natid exown, natid own, int id, coord x, coord y)
+{
+    if (exown == own)
+       return;
+    if (exown)
+       makelost(type, exown, id, x, y);
+    if (own)
+       makenotlost(type, own, id, x, y);
+}
 
 void
-makelost(char type, natid owner, short int id, coord x, coord y)
+makelost(int type, natid owner, int id, coord x, coord y)
 {
     struct loststr lost;
     int n;
 
     n = findlost(type, owner, id, x, y, 1);
-    if (n < 0) {
-       ef_extend(EF_LOST, 25);
-       n = findlost(type, owner, id, x, y, 1);
-       if (n < 0)
-           return;
-    }
-
-    getlost(n, &lost);
+    ef_blank(EF_LOST, n, &lost);
     lost.lost_type = type;
     lost.lost_owner = owner;
     lost.lost_id = id;
     lost.lost_x = x;
     lost.lost_y = y;
-    lost.lost_uid = n;
-    time(&lost.lost_timestamp);
     putlost(n, &lost);
 }
 
 void
-makenotlost(char type, natid owner, short int id, coord x, coord y)
+makenotlost(int type, natid owner, int id, coord x, coord y)
 {
     struct loststr lost;
     int n;
@@ -81,38 +81,58 @@ makenotlost(char type, natid owner, short int id, coord x, coord y)
        return;
     getlost(n, &lost);
     lost.lost_owner = 0;
-    lost.lost_timestamp = 0;
     putlost(n, &lost);
 }
 
-int
-findlost(char type, natid owner, short int id, coord x, coord y, int free)
-          
-            
-         
-        
-        
-          /* Give me the item of a free slot */
+
+/*
+ * Find a suitable slot in the lost file.
+ * If a record for TYPE, OWNER, ID, X, Y exists, return its index.
+ * Else if FREE is non-zero, return the index of an unused record.
+ * Else return -1.
+ */
+static int
+findlost(int type, natid owner, int id, coord x, coord y, int free)
 {
     struct loststr lost;
     int n;
     int freeslot = -1;
 
-/* Find a free slot, or find this item again */
     for (n = 0; getlost(n, &lost); n++) {
-       if (!lost.lost_owner && freeslot == -1 && free == 1)
+       if (!lost.lost_owner && freeslot < 0)
            freeslot = n;
        if (!lost.lost_owner)
            continue;
        if (lost.lost_owner == owner && type == lost.lost_type) {
-           if (type == EF_SECTOR && lost.lost_x == x && lost.lost_y == y) {
-               freeslot = n;
-               break;
-           } else if (lost.lost_id == id) {
-               freeslot = n;
-               break;
-           }
+           if (type == EF_SECTOR && lost.lost_x == x && lost.lost_y == y)
+               return n;
+           else if (lost.lost_id == id)
+               return n;
        }
     }
-    return freeslot;
+
+    if (free) {
+       if (freeslot < 0)
+           freeslot = n;
+       return freeslot;
+    }
+
+    return -1;
+}
+
+void
+delete_old_lostitems(void)
+{
+    time_t expiry_time = time(NULL) - hours(lost_keep_hours);
+    struct loststr lost;
+    int i;
+
+    for (i = 0; getlost(i, &lost); i++) {
+       if (!lost.lost_owner)
+           continue;
+       if (lost.lost_timestamp >= expiry_time)
+           continue;
+       lost.lost_owner = 0;
+       putlost(i, &lost);
+    }
 }