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rulegen:: trace_rootpath changed to beats_exhaustive

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Zeno Rogue
2021-12-26 16:28:47 +01:00
parent 045a439d64
commit 81e8a1f113
1 changed files with 22 additions and 38 deletions
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60
rulegen.cpp
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@@ -814,38 +814,29 @@ EX void ensure_shorter(twalker cw) {
}
}
void trace_root_path(vector<int>& rp, twalker cw) {
auto d = cw.peek()->dist;
cw += wstep; auto scw = cw;
EX bool beats_exhaustive(twalker w1, twalker w2) {
int iter = 0;
while(true) { iter++;
w1 += wstep;
w2 += wstep;
bool side = (flags & w_parent_side);
if(w1.at->dist == 0)
return w1.spin > w2.spin;
next:
if(d > 0) {
ufind(cw);
be_solid(w1.at);
be_solid(w2.at);
handle_distance_errors();
auto cwd = get_parent_dir(cw);
for(int i=0; i<cw.at->type; i++) {
if((!side) && (cw+i) != cwd) continue;
tcell *c1 = cwd.peek();
if(!c1) continue;
be_solid(c1);
handle_distance_errors();
if(c1->dist < d) {
rp.push_back(i);
cw += i;
cw += wstep;
d--;
goto next;
}
}
auto sw1 = get_parent_dir(w1);
auto sw2 = get_parent_dir(w2);
int d1 = w1.to_spin(sw1.spin);
int d2 = w2.to_spin(sw2.spin);
if(d1 != d2) return d1 < d2;
w1 = sw1;
w2 = sw2;
}
if(d > 0) {
debuglist = {scw};
throw rulegen_failure("should not happen [trace]");
}
rp.push_back(cw.to_spin(0));
if(flags & w_parent_reverse) reverse(rp.begin(), rp.end());
}
EX int parent_updates;
@@ -913,17 +904,10 @@ EX twalker get_parent_dir(twalker& cw) {
resolve:
hard_parents++;
vector<int> best;
int bestfor = nearer[0];
trace_root_path(best, twalker(c, nearer[0]));
bestd = nearer[0];
for(auto ne1: nearer) {
vector<int> other;
trace_root_path(other, twalker(c, ne1));
if(other < best) best = other, bestfor = ne1;
}
bestd = bestfor;
for(auto ne1: nearer) if(ne1 != bestd && beats_exhaustive(twalker(c, ne1), twalker(c, bestd)))
bestd = ne1;
}
if(bestd == -1) {