nethack-gwaa-kiwi/nethack
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worm display bug

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This fixes a long worm display bug.  The bug wasn't really in the worm code, it
was in goodpos().  goodpos() could place worm segments on top of one another.
If you split a worm when the tail was located on top of the head, the tail
would be removed from the screen, making the head seem to vanish.
This commit is contained in:
arromdee
2002-05-03 03:47:39 +00:00
parent 050bc318ba
commit 407696c305
2 changed files with 13 additions and 1 deletions
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12
src/teleport.c
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@@ -42,7 +42,17 @@ struct monst *mtmp;
if (mtmp) {
struct monst *mtmp2 = m_at(x,y);
if (mtmp2 && mtmp2 != mtmp)
/* Be careful with long worms. A monster may be placed back in
* its own location. Normally, if m_at() returns the same monster
* that we're trying to place, the monster is being placed in its
* own location. However, that is not correct for worm segments,
* because all the segments of the worm return the same m_at().
* Actually we overdo the check a little bit--a worm can't be placed
* in its own location, period. If we just checked for mtmp->mx
* != x || mtmp->my != y, we'd miss the case where we're called
* to place the worm segment and the worm's head is at x,y.
*/
if (mtmp2 && (mtmp2 != mtmp || mtmp->wormno))
return FALSE;
mdat = mtmp->data;