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Code Issues Releases Wiki Activity

rulegen:: build shortcuts on parent change

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This commit is contained in:
Zeno Rogue 2021-12-25 21:31:36 +01:00
parent d1ed0ab779
commit d74edf07db
1 changed files with 12 additions and 30 deletions
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42
rulegen.cpp
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@ -104,6 +104,8 @@ struct tcell {
short code;
/** direction to the parent in the tree */
short parent_dir;
/** direction to the OLD parent in the tree */
short old_parent_dir;
/** direction to anyone closer */
short any_nearer;
/** can we assume that dist is correct? if we assumed that the dist is correct but then find out it was wrong, throw an error */
@ -178,6 +180,7 @@ tcell *gen_tcell(int id) {
c->dist = MYSTERY;
c->code = MYSTERY;
c->parent_dir = MYSTERY;
c->old_parent_dir = MYSTERY;
first_tcell = c;
// println(hlog, c, " is a new tcell of id ", id);
tcellcount++;
@ -574,9 +577,11 @@ EX void find_new_shortcuts(tcell *c, int d, tcell *alt, int newdir, int delta) {
EX void remove_parentdir(tcell *c) {
sidecache.clear();
if(c->parent_dir) c->old_parent_dir = c->parent_dir;
c->parent_dir = MYSTERY;
c->code = MYSTERY;
for(int i=0; i<c->type; i++) if(c->move(i)) {
if(c->move(i)->parent_dir) c->move(i)->old_parent_dir = c->move(i)->parent_dir;
c->move(i)->parent_dir = MYSTERY;
c->move(i)->code = MYSTERY;
}
@ -625,38 +630,9 @@ EX void fix_distances(tcell *c) {
tgt_d = new_d;
sidecache.clear();
tgt->any_nearer = tgtw.spin;
tgt->parent_dir = MYSTERY;
if(tgt->is_solid) tgt->parent_dir = tgtw.spin;
tgt->code = MYSTERY;
remove_parentdir(tgt);
return true;
}
if(tgt_d == new_d && tgt->parent_dir != MYSTERY && tgt->parent_dir != tgtw.spin) {
auto& sh = arb::current.shapes[tgt->id];
auto k = sh.cycle_length;
int dif = tgtw.spin % k - tgt->parent_dir % k;
auto oldp = get_parent_dir(tgtw);
if(dif == 0) {
tgtw.at->parent_dir = MYSTERY;
auto newp = get_parent_dir(tgtw);
if(oldp != newp) {
if(newp != tgtw) throw rulegen_retry("parent_dir confusion should not happen");
dif = -1;
}
}
if(dif < 0) {
tgtw.at->parent_dir = tgtw.spin;
tgtw.at->code = MYSTERY;
ufind(oldp);
indenter ind(2);
tgtw.at->any_nearer = oldp.spin;
find_new_shortcuts(tgtw.at, new_d, tgtw.at, tgtw.spin, 0);
sidecache.clear();
}
}
return false;
};
@ -951,6 +927,12 @@ EX twalker get_parent_dir(twalker& cw) {
if(parent_debug) println(hlog, "set parent_dir to ", bestd);
c->parent_dir = bestd;
if(c->old_parent_dir != MYSTERY && c->old_parent_dir != bestd && c == oc) {
c->any_nearer = c->old_parent_dir;
find_new_shortcuts(c, c->dist, c, bestd, 0);
}
return twalker(c, bestd);
}