Borders müssen doppelt geprüft werden - einmal bei der Erstellung des Pfads, einmal um ihre Auswirkungen auf die Einheit auszuführen.

Einheiten mit number=0 laufen nicht weiter.

src/common/kernel/border.h

@@ -78,7 +78,7 @@ extern "C" {
     /* is the border in a valid state,
     * or should it be erased at the end of this turn to save space?
     */
-    struct region * (*move)(const border *, struct unit * u, struct region * from, struct region * to);
+    struct region * (*move)(const border *, struct unit * u, struct region * from, struct region * to, boolean routing);
     /* executed when the units traverses this border */
     struct border_type * next; /* for internal use only */
   } border_type;

src/common/kernel/movement.c

@@ -1070,7 +1070,7 @@ make_route(unit * u, order * ord, region_list ** routep)
     }
     while (b!=NULL) {
       if (b->type->move) {
-        region * rto = b->type->move(b, u, current, next);
+        region * rto = b->type->move(b, u, current, next, true);
         if (rto!=next) {
           /* the target region was changed (bt_wisps, for example). check the
            * new target region for borders */
@@ -1198,6 +1198,7 @@ travel_route(unit * u, region_list * route_begin, region_list * route_end, order
   while (iroute && iroute!=route_end) {
     region * next = iroute->data;
     direction_t reldir = reldirection(current, next);
+    border * b = get_borders(current, next);
 
     /* check if we are caught by guarding units */
     if (iroute!=route_begin && mode!=TRAVEL_RUNNING && mode!=TRAVEL_TRANSPORTED) {
@@ -1281,9 +1282,19 @@ travel_route(unit * u, region_list * route_begin, region_list * route_end, order
       }
     }
 
+    /* effect of borders */
+    while (b!=NULL) {
+      if (b->type->move) {
+        region * rto = b->type->move(b, u, current, next, false);
+        assert(rto==NULL); /* should return NULL when not routing */
+      }
+      b = b->next;
+    }
+
     current = next;
     iroute = iroute->next;
     ++steps;
+    if (u->number==0) break;
   }
 
   if (iroute!=route_begin) {

src/common/kernel/spell.c

@@ -2981,11 +2981,12 @@ wall_write(const border * b, FILE * f)
 }
 
 static region *
-wall_move(const border * b, struct unit * u, struct region * from, struct region * to)
+wall_move(const border * b, struct unit * u, struct region * from, struct region * to, boolean routing)
 {
   wall_data * fd = (wall_data*)b->data;
-  int hp = dice(3, fd->force) * u->number;
+  if (routing) return to;
   if (fd->active) {
+    int hp = dice(3, fd->force) * u->number;
     hp = min (u->hp, hp);
     u->hp -= hp;
     if (u->hp) {
@@ -2998,8 +2999,7 @@ wall_move(const border * b, struct unit * u, struct region * from, struct region
       u->hp = u->number;
     }
   }
-  unused(from);
+  return NULL;
-  return to;
 }
 
 border_type bt_firewall = {
@@ -3094,12 +3094,13 @@ wisps_name(const border * b, const region * r, const faction * f, int gflags)
 }
 
 static region *
-wisps_move(const border * b, struct unit * u, struct region * from, struct region * next)
+wisps_move(const border * b, struct unit * u, struct region * from, struct region * next, boolean routing)
 {
   direction_t reldir = reldirection(from, next);
   wall_data * wd = (wall_data*)b->data;
   assert(reldir!=D_SPECIAL);
 
+  if (!routing) return NULL;
   if (wd->active) {
     /* pick left and right region: */
     region * rl = rconnect(from, (direction_t)((reldir+MAXDIRECTIONS-1)%MAXDIRECTIONS));