Speed up export cost calculation in assemble_dist_paths()

[empserver] / src / lib / update / distribute.c

diff --git a/src/lib/update/distribute.c b/src/lib/update/distribute.c
index ddc88bdd5a1b3efffb8145e84979e77d97936b05..7e94812cd393e306ef11ec3ada2dcc579795057f 100644 (file)
--- a/src/lib/update/distribute.c
+++ b/src/lib/update/distribute.c
@@ -30,6 +30,7 @@
  *  Known contributors to this file:
  *     Dave Pare, 1986
  *     Steve McClure, 1998
+ *     Markus Armbruster, 2004-2011
  */
 
 #include <config.h>
@@ -51,8 +52,9 @@
 #define IMPORT_BONUS 10.0
 
 int
-dodistribute(struct sctstr *sp, int imex, double path_cost)
+dodistribute(struct sctstr *sp, int imex, double import_cost)
 {
+    double path_cost, dcc;
     struct ichrstr *ip;
     struct sctstr *dist;
     int amt;
@@ -71,16 +73,23 @@ dodistribute(struct sctstr *sp, int imex, double path_cost)
     if ((sp->sct_dist_x == sp->sct_x) && (sp->sct_dist_y == sp->sct_y))
        return 0;
 
-    if (path_cost < 0.0) {
-       if (sp->sct_own != 0) {
-           if (imex == EXPORT) /* only want this once */
+    if (imex == IMPORT && import_cost < 0.0)
+       return 0;
+
+    dist = getsectp(sp->sct_dist_x, sp->sct_dist_y);
+    if (imex == IMPORT)
+       path_cost = import_cost;
+    else {
+       dcc = sector_mcost(dist, MOB_MOVE);
+       if (import_cost < 0.0 || dcc < 0.0) {
+           if (sp->sct_own != 0)
                wu(0, sp->sct_own, "No path to dist sector for %s\n",
                   ownxy(sp));
+           return 0;
        }
-       return 0;
+       path_cost = import_cost - sector_mcost(sp, MOB_MOVE) + dcc;
     }
 
-    dist = getsectp(sp->sct_dist_x, sp->sct_dist_y);
     dist_packing = dist->sct_effic >= 60 ? dchr[dist->sct_type].d_pkg : IPKG;
     sect_packing = sp->sct_effic   >= 60 ? dchr[sp->sct_type].d_pkg : IPKG;