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sidecache

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This commit is contained in:
Zeno Rogue 2021-08-19 01:24:01 +02:00
parent 1798bc4612
commit d321e4b5ec
1 changed files with 13 additions and 8 deletions
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21
rulegen.cpp
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@ -401,6 +401,7 @@ void check_solid(tcell *c, int d) {
}
EX void remove_parentdir(tcell *c) {
sidecache.clear();
c->parent_dir = MYSTERY;
c->code = MYSTERY;
for(int i=0; i<c->type; i++) if(c->move(i)) {
@ -463,7 +464,7 @@ void handle_distance_errors() {
bool b = solid_errors;
solid_errors = 0;
if(b && !no_errors) {
analyzers.clear();
sidecache.clear();
throw hr_solid_error();
}
}
@ -776,7 +777,11 @@ void treewalk(twalker& cw, int delta) {
cw+=delta;
}
EX std::map<twalker, int> sidecache;
int get_side(twalker what) {
auto ww = at_or_null(sidecache, what);
if(ww) return *ww;
twalker w = what;
twalker tw = what + wstep;
auto adv = [] (twalker& cw) {
@ -804,12 +809,11 @@ int get_side(twalker what) {
adv(w); adv(tw);
}
}
if(w.spin == -1 || tw.spin == -1) return 0;
int d = get_parent_dir(w.at);
if(d >= 0 && !single_live_branch_close_to_root.count(w.at)) {
twalker last(w.at, d);
return last.to_spin(w.spin) - last.to_spin(tw.spin);
return sidecache[what] = last.to_spin(w.spin) - last.to_spin(tw.spin);
}
// failed to solve this in the simple way (ended at the root) -- go around the tree
@ -819,14 +823,15 @@ int get_side(twalker what) {
auto ws = what; treewalk(ws, 0); if(ws == to_what) return 0;
while(true) {
steps++; if(steps > 1000000) {
debuglist = {what, to_what, w, tw};
throw rulegen_failure("get_side freeze II");
handle_distance_errors();
steps++; if(steps > 10000) {
debuglist = {what, to_what, wl, wr};
throw rulegen_failure("xsidefreeze");
}
treewalk(wl, -1);
treewalk(wr, +1);
if(wl == to_what) return +1;
if(wr == to_what) return -1;
if(wl == to_what) return sidecache[what] = +1;
if(wr == to_what) return sidecache[what] = -1;
}
}