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(bestownedpath): Return NULL on long path instead of "?". Terminate

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returned path with 'h'.  This makes BestShipPath() and BestAirPath()
more similar to BestLandPath().  Simplify callers.
This commit is contained in:
Markus Armbruster 2006-04-05 09:30:38 +00:00
parent 9c27a771b3
commit abb9ae2338
3 changed files with 6 additions and 7 deletions
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4
src/lib/commands/orde.c
View file

@ -474,12 +474,10 @@ sorde(void)
c = BestShipPath(buf, ship.shp_x,
ship.shp_y, ship.shp_destx[0],
ship.shp_desty[0], ship.shp_own);
if (!c || !*c)
if (!c)
pr(" no route possible");
else if (*c == 'h')
pr(" has arrived");
else if (*c == '?')
pr(" route too long");
else {
/* distance to destination */
eta_calc(&ship, c, &len, &updates);

7
src/lib/common/bestpath.c
View file

@ -176,8 +176,8 @@ bestownedpath(s_char *bpath,
maxy = y + 1;
do {
if (++routelen == MAXROUTE)
return "?";
if (++routelen == MAXROUTE - 1)
return NULL;
markedsectors = 0;
for (scanx = minx; scanx <= maxx; scanx++) {
x = XNORM(scanx);
@ -200,7 +200,8 @@ bestownedpath(s_char *bpath,
}
}
if (tx == ex && ty == ey) {
bpath[routelen] = 0;
bpath[routelen] = 'h';
bpath[routelen + 1] = 0;
while (routelen--) {
i = ((mapindex[tx][ty]) >> 13) - 1;
bpath[routelen] = dirchar[i];

2
src/lib/update/nav_ship.c
View file

@ -285,7 +285,7 @@ nav_ship(struct shpstr *sp)
cp = BestShipPath(buf, sp->shp_x, sp->shp_y,
sp->shp_destx[0], sp->shp_desty[0],
sp->shp_own);
if (cp == 0 || (*cp == '\0') || (*cp == '?')) {
if (cp == 0) {
wu(0, cnum,
"%s bad path, ship put on standby\n", prship(sp));
sp->shp_autonav |= AN_STANDBY;