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fixed potential crashes on Ivy errors

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This commit is contained in:
Zeno Rogue 2020-12-26 17:22:32 +01:00
parent c906a2b906
commit f3040d439c
2 changed files with 5 additions and 1 deletions
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3
attack.cpp
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@ -761,7 +761,8 @@ EX void killMonster(cell *c, eMonster who, flagtype deathflags IS(0)) {
drawBubble(c, 0xFFFF00, s.get_str(100), .5);
if(m == moIvyBranch || m == moIvyHead || m == moIvyNext) {
int qty = 0;
cell *c2 = c->move(c->mondir);
cell *c2 = proper(c, c->mondir) ? c->move(c->mondir) : nullptr;
if(!c2) c2 = c; /* should not happen */
for(int i=0; i<c2->type; i++)
if(c2->move(i)->monst == moIvyWait && c2->move(i)->mondir == c2->c.spin(i))
qty++;

3
monstermove.cpp
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@ -931,6 +931,8 @@ EX void ivynext(cell *c) {
cell *c2 = c;
while(true) {
if(c2->monst == moIvyRoot) break;
if(!proper(c2, c2->mondir))
return; /* incorrect data */
if(!isIvy(c2->monst)) break;
if(c2->c.mirror(c2->mondir)) cw.mirrored = !cw.mirrored;
c2 = c2->move(c2->mondir);
@ -1031,6 +1033,7 @@ EX void moveivy() {
mto->monst = moIvyHead; co->monst = moIvyBranch;
}
}
else if(!proper(co, co->mondir) || !co->move(co->mondir)) ; /* should not happen */
else if(co->move(co->mondir)->monst != moIvyRoot) {
// shrink useless branches, but do not remove them completely (at the root)
if(co->monst == moIvyHead) co->move(co->mondir)->monst = moIvyHead;