From f4b6fc17a0314cfbcba68547fd90c0f287e3e1f8 Mon Sep 17 00:00:00 2001
From: ian <ian>
Date: Sun, 8 Jun 2008 00:47:25 +0000
Subject: [PATCH] get initial resolution more right

---
 hostside/resolve.c | 7 ++++++-
 hostside/safety.c  | 7 +++++--
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/hostside/resolve.c b/hostside/resolve.c
index 87947d0..c041cc6 100644
--- a/hostside/resolve.c
+++ b/hostside/resolve.c
@@ -428,7 +428,11 @@ static int findhead_nextseg(TrackLocation *t, struct TrackAdvanceContext *c,
   t->seg->tr_backwards= t->backwards;
   t->seg->resfin_done= 1;
 
-  if (!t->seg->res_detect) { u->extraspace= 0; return -1; }
+  if (!t->seg->res_detect) {
+    u->train->plan_lookahead_nsegs= 1;
+    u->extraspace= 0;
+    return -1;
+  }
   u->train->foredetect= t->seg;
   return 0;
 }
@@ -477,6 +481,7 @@ static int resolve_complete_ends_train(Train *tra) {
   t.backwards= t.seg->tr_backwards ^ tra->backwards;
 
   tra->backwards= 0;
+  tra->plan_lookahead_nsegs= 0;
 
   tc.distance= TL_DIST_INF;
   tc.nextseg= findhead_nextseg;
diff --git a/hostside/safety.c b/hostside/safety.c
index e67f85a..485b639 100644
--- a/hostside/safety.c
+++ b/hostside/safety.c
@@ -271,7 +271,8 @@ typedef struct {
     walk_compute_polarise:1, /* nose_nextseg still needs to worry */
     need_polarise:1, /* when we commit */
     train_polarity_inverted:1, /* right now, or if know_best, the best */
-    know_best_polarity:1; /* longest-lasting into the future */
+    know_best_polarity:1, /* longest-lasting into the future */
+    done_fdet:1; /* for report_nextseg */
   TrackLocation nose, fdet, tail;
   TrackAdvanceContext nosec, tailc, fdetc;
   TimeInterval elapsed; /* from now, minimum */
@@ -987,7 +988,7 @@ static int report_nextseg(TrackLocation *t, struct TrackAdvanceContext *c,
   char flags[6];
   int r;
 
-  if (!u->usecurrentposn) /* we've had foredetect */
+  if (u->done_fdet) /* we've had foredetect */
     if (++u->lookahead > u->train->plan_lookahead_nsegs)
       return -1;
 
@@ -1000,6 +1001,7 @@ static int report_nextseg(TrackLocation *t, struct TrackAdvanceContext *c,
   if (t->seg == u->train->foredetect) {
     strcat(flags,"!");
     u->usecurrentposn= 0;
+    u->done_fdet= 1;
   }
 
   ouprintf(" %s%s", t->backwards?"-":"", t->seg->i->pname);
@@ -1021,6 +1023,7 @@ void report_train_ownerships(Train *tra, Segment *hindmost,
   u.train= tra;
   u.hindmost= 0;
   u.usecurrentposn= !always_use_motions;
+  u.done_fdet= 0;
   
   /* Walk along the train printing its segments: */
   ouprintf("train %s has", tra->pname);
-- 
2.30.2