Update copyright notice

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

diff --git a/src/lib/subs/plane.c b/src/lib/subs/plane.c
index 7b1c89ae8673f5b1a8e33c84f3e2ad9123175508..6044693f39e7fed7cb4597e8ab5ae7a252f789b4 100644 (file)
--- a/src/lib/subs/plane.c
+++ b/src/lib/subs/plane.c
@@ -1,6 +1,6 @@
 /*
  *  Empire - A multi-player, client/server Internet based war game.
- *  Copyright (C) 1986-2011, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ *  Copyright (C) 1986-2014, Dave Pare, Jeff Bailey, Thomas Ruschak,
  *                Ken Stevens, Steve McClure, Markus Armbruster
  *
  *  Empire is free software: you can redistribute it and/or modify
@@ -64,20 +64,23 @@ pln_prewrite(int n, void *old, void *new)
     struct plnstr *oldpp = old;
     struct plnstr *pp = new;
     natid own = pp->pln_effic < PLANE_MINEFF ? 0 : pp->pln_own;
+    int ship = pp->pln_ship;
+    int land = pp->pln_land;
+
+    /* Be careful with writing to *pp, in case oldpp == pp */
 
     if (!own) {
        pp->pln_effic = 0;
-       pp->pln_ship = pp->pln_land = -1;
+       ship = land = -1;
     }
 
-    if (CANT_HAPPEN(pp->pln_ship >= 0 && pp->pln_land >= 0))
-       pp->pln_land = -1;
-    if (oldpp->pln_ship != pp->pln_ship)
-       pln_carrier_change(pp, EF_SHIP, oldpp->pln_ship, pp->pln_ship);
-    if (oldpp->pln_land != pp->pln_land)
-       pln_carrier_change(pp, EF_LAND, oldpp->pln_land, pp->pln_land);
+    if (CANT_HAPPEN(ship >= 0 && land >= 0))
+       land = -1;
+    if (oldpp->pln_ship != ship)
+       pln_carrier_change(pp, EF_SHIP, oldpp->pln_ship, ship);
+    if (oldpp->pln_land != land)
+       pln_carrier_change(pp, EF_LAND, oldpp->pln_land, land);
 
-    /* We've avoided assigning to pp->pln_own, in case oldpp == pp */
     if (oldpp->pln_own != own) {
        lost_and_found(EF_PLANE, oldpp->pln_own, own,
                       pp->pln_uid, pp->pln_x, pp->pln_y);
@@ -86,6 +89,8 @@ pln_prewrite(int n, void *old, void *new)
     }
 
     pp->pln_own = own;
+    pp->pln_ship = ship;
+    pp->pln_land = land;
     if (!own || pp->pln_x != oldpp->pln_x || pp->pln_y != oldpp->pln_y)
        unit_update_cargo((struct empobj *)pp);
 }