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https://github.com/zenorogue/hyperrogue.git
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rulegen:: improved the memory performance
This commit is contained in:
Zeno Rogue
parent
7c9c599e4c
commit
b60618d28a
279
rulegen.cpp
279
rulegen.cpp
@ -99,7 +99,6 @@ void process_fix_queue() {
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fix_queue.pop();
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}
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in_fixing = false;
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handle_distance_errors();
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}
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void ufind(twalker& p) {
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@ -110,6 +109,10 @@ void ufind(twalker& p) {
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p = p1 + p.spin;
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}
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void ufindc(tcell*& c) {
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twalker cw = c; ufind(cw); c = cw.at;
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}
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EX tcell *first_tcell = nullptr;
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void connect_and_check(twalker p1, twalker p2);
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@ -258,7 +261,117 @@ struct hr_solid_error : rulegen_retry {
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int solid_errors;
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void fix_distances_rec(tcell *c) {
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int get_parent_dir(tcell *c);
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struct shortcut {
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vector<int> pre;
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vector<int> post;
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tcell *sample;
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int delta;
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};
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map<int, vector<shortcut> > shortcuts;
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vector<int> root_path(twalker cw) {
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cw += wstep;
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vector<int> res;
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while(true) {
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int i = cw.at->dist == 0 ? 0 : get_parent_dir(cw.at);
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int j = cw.to_spin(i);
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res.push_back(j);
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if(cw.at->dist == 0) return res;
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cw += j;
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cw += wstep;
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}
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}
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void check_solid(tcell *c, int d) {
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ufindc(c);
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if(debugflags & DF_GEOM)
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println(hlog, "solid ", c, " changes ", c->dist, " to ", d);
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if(c->dist == MYSTERY_DIST) exit(2);
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set<tcell*> seen;
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vector<twalker> walkers;
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vector<int> walkerdir = {-1};
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seen.insert(c);
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walkers.push_back(c);
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for(int j=0; j<isize(walkers); j++) {
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auto w = walkers[j];
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for(int s=0; s<w.at->type; s++) {
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twalker w1 = w + s;
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if(w1.peek() && w1.peek()->dist == w.at->dist - 1 && !seen.count(w1.peek())) {
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seen.insert(w1.peek());
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walkers.push_back(w1 + wstep);
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walkerdir.push_back(s);
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}
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}
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}
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c->dist = d;
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set<tcell*> seen2;
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vector<twalker> walkers2;
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vector<int> walkerdir2 = {-1};
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walkers2.push_back(c);
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for(int j=0; j<isize(walkers2); j++) {
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auto w = walkers2[j];
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for(int s=0; s<w.at->type; s++) {
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twalker w1 = w + s;
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if(!w1.peek()) continue;
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if(w1.peek()->dist == w.at->dist - 1 && !seen2.count(w1.peek())) {
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seen2.insert(w1.peek());
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walkers2.push_back(w1 + wstep);
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walkerdir2.push_back(s);
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if(seen.count(w1.peek())) goto found;
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}
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}
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}
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return;
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found:
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auto at0 = walkers2.back().at;
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tcell* at = at0;
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twalker at1;
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for(int i=isize(walkers)-1; i>=1; i--) if(at == walkers[i].at) at1 = walkers[i];
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vector<int> pre;
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for(int i=isize(walkers)-1; i>=1; i--) if(at == walkers[i].at) {
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pre.push_back(walkerdir[i]); at = walkers[i].peek();
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}
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if(at != c) return;
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at = at0;
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vector<int> post;
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for(int i=isize(walkers2)-1; i>=1; i--) if(at == walkers2[i].at) {
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post.push_back(walkerdir2[i]); at = walkers2[i].peek();
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}
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if(at != c) return;
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reverse(pre.begin(), pre.end());
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reverse(post.begin(), post.end());
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int delta = at1.to_spin(walkers2.back().spin);
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for(auto s: shortcuts[c->id]) if(s.pre == pre && s.post == post) return;
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if(debugflags & DF_GEOM)
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println(hlog, "new shortcut found, pre = ", pre, " post = ", post, " pre reaches ", at1, " post reaches ", walkers2.back(), " of type ", at1.at->id, " sample = ", c);
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shortcuts[c->id].emplace_back(shortcut{pre, post, c, delta});
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if(debugflags & DF_GEOM) println(hlog, "exhaustive search:");
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indenter ind(2);
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tcell* c1 = first_tcell;
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while(c1) {
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if(c1->id == c->id) look_for_shortcuts(c1);
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c1 = c1->next;
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}
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}
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void fix_distances(tcell *c) {
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c->distance_fixed = true;
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vector<tcell*> q = {c};
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@ -268,13 +381,14 @@ void fix_distances_rec(tcell *c) {
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restart:
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for(int i=0; i<c->type; i++) {
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tcell *c1 = c->cmove(i);
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ufindc(c);
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c1 = c->cmove(i);
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if(c1->dist == MYSTERY) continue;
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auto& d1 = c1->dist;
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if(d > d1+1) { d = d1+1; goto restart; }
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if(d1 > d+1) {
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if(c1->is_solid) {
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if(debugflags & DF_GEOM)
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println(hlog, "solid ", c1, "changes ", d1, " to ", d+1);
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check_solid(c1, d+1);
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solid_errors++;
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}
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d1 = d+1;
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@ -284,39 +398,12 @@ void fix_distances_rec(tcell *c) {
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}
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}
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EX int prepare_around_radius;
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void fix_distances(tcell *c) {
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fix_distances_rec(c);
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handle_distance_errors();
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}
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void calc_distances(tcell *c) {
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if(c->dist != MYSTERY) return;
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c->dist = MYSTERY_DIST;
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fix_distances(c);
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}
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void prepare_around(tcell *c) {
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vector<tcell*> q;
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set<tcell*> visited;
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auto visit = [&] (tcell *x) {
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if(visited.count(x)) return;
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visited.insert(x);
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q.push_back(x);
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};
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visit(c);
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int next_lev = 1;
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int cdist = 0;
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for(int i=0; i<isize(q); i++) {
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if(i == next_lev) { cdist++; if(cdist == prepare_around_radius) break; next_lev = isize(q); }
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tcell *cx = q[i];
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for(int d=0; d<cx->type; d++) visit(cx->cmove(d));
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}
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for(auto cx: q) calc_distances(cx);
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}
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void unify_distances(tcell *c1, tcell *c2) {
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int d1 = c1->dist;
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int d2 = c2->dist;
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@ -328,18 +415,13 @@ void unify_distances(tcell *c1, tcell *c2) {
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c1->distance_fixed = c1->distance_fixed || c2->distance_fixed;
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c1->is_solid = c1->is_solid || c2->is_solid;
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if(c1->dist < MYSTERY)
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fix_distances_rec(c1);
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fix_distances(c1);
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}
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void handle_distance_errors() {
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bool b = solid_errors;
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solid_errors = 0;
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if(b && !no_errors) {
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prepare_around_radius++;
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if(debugflags & DF_GEOM)
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println(hlog, "increased prepare_around_radius to ", prepare_around_radius);
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throw hr_solid_error();
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}
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if(b && !no_errors) throw hr_solid_error();
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}
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/** make sure that we know c->dist */
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@ -347,10 +429,67 @@ void be_solid(tcell *c) {
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if(c->is_solid) return;
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if(tcellcount >= max_tcellcount)
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throw rulegen_surrender("max_tcellcount exceeded");
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prepare_around(c);
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ufindc(c);
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calc_distances(c);
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ufindc(c);
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look_for_shortcuts(c);
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ufindc(c);
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if(c->dist == MYSTERY_DIST) {
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println(hlog, "set solid but no dist ", c);
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exit(3);
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}
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c->is_solid = true;
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}
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EX void look_for_shortcuts(tcell *c) {
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if(c->dist > 0) for(int i=0; i<isize(shortcuts[c->id]); i++) {
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auto sh = shortcuts[c->id][i];
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if(1) {
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twalker tw0(c, 0);
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twalker tw(c, 0);
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ufind(tw);
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ufind(tw0);
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int old = c->dist;
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vector<tcell*> opath;
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for(auto& v: sh.pre) {
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opath.push_back(tw.at);
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tw += v;
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if(!tw.peek()) goto next_shortcut;
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if(tw.peek()->dist != tw.at->dist-1) goto next_shortcut;
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ufind(tw);
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tw += wstep;
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}
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opath.push_back(tw.at);
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ufind(tw0);
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vector<tcell*> npath;
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for(auto& v: sh.post) {
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npath.push_back(tw0.at);
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tw0 += v;
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ufind(tw0);
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tw0 += wstep;
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calc_distances(tw0.at);
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}
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npath.push_back(tw0.at);
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int d = sh.delta;
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auto tw1 = tw + d;
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fix_queue.push([=] { unify(tw1, tw0); });
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process_fix_queue();
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for(auto t: npath) {
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ufindc(t);
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fix_distances(t);
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}
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ufindc(c);
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}
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next_shortcut: ;
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}
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}
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/** which neighbor will become the parent of c */
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int get_parent_dir(tcell *c) {
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@ -358,6 +497,7 @@ int get_parent_dir(tcell *c) {
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int bestd = -1;
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vector<int> bestrootpath;
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look_for_shortcuts(c);
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be_solid(c);
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if(c->dist > 0) {
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@ -402,16 +542,21 @@ struct analyzer {
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vector<twalker> spread;
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vector<int> parent_id;
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vector<int> spin;
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void add_step(int pid, int s) {
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twalker cw = spread[pid];
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cw = cw + s + wstep;
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spread.push_back(cw);
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parent_id.push_back(pid);
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spin.push_back(s);
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}
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void add_step(int pid, int s);
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};
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#endif
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void analyzer::add_step(int pid, int s) {
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twalker cw = spread[pid];
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cw = cw + s;
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cw.peek();
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ufind(cw);
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cw = cw + wstep;
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spread.push_back(cw);
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parent_id.push_back(pid);
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spin.push_back(s);
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}
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map<aid_t, analyzer> analyzers;
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EX aid_t get_aid(twalker cw) {
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@ -438,8 +583,13 @@ EX vector<twalker> spread(analyzer& a, twalker cw) {
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int N = isize(a.spread);
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res.reserve(N);
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res.push_back(cw);
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for(int i=1; i<N; i++)
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res.push_back(res[a.parent_id[i]] + a.spin[i] + wstep);
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for(int i=1; i<N; i++) {
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auto& r = res[a.parent_id[i]];
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ufind(r);
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auto r1 = r + a.spin[i];
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r1.peek(); ufind(r1);
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res.push_back(r1 + wstep);
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}
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return res;
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}
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@ -541,7 +691,7 @@ int get_side(tcell *what, tcell *to_what) {
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twalker wr = wl;
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auto go = [&] (twalker& cw, int delta) {
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int d = get_parent_dir(cw.at);
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if(cw.spin == d || get_parent_dir(cw.peek()) == (cw+wstep).spin)
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if(cw.spin == d || get_parent_dir(cw.cpeek()) == (cw+wstep).spin)
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cw += wstep;
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cw+=delta;
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};
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@ -575,11 +725,14 @@ code_t id_at_spin(twalker cw) {
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if(p >= 0 && get_parent_dir(cs.at) == cs.spin)
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x = C_CHILD;
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else {
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auto cs2 = cs + wstep;
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ufind(cs); ufind(cs2); be_solid(cs2.at);
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fix_distances(cs.at);
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int y = cs.at->dist - cs.peek()->dist;
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if(y == 1) x = C_NEPHEW;
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else if(y == 0) x = C_EQUAL;
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else if(y == -1) x = C_UNCLE;
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else throw rulegen_failure("distance problem");
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else throw rulegen_failure("distance problem y=" + its(y) + lalign(0, " cs=", cs, " cs2=", cs2, " peek=", cs.peek(), " dist=", cs.at->dist, " dist2=", cs2.at->dist));
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auto gs = get_side(cs.at, cs.peek());
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if(gs == 0 && x == C_UNCLE) x = C_PARENT;
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if(gs > 0) x++;
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@ -602,22 +755,6 @@ EX pair<int, int> get_code(tcell *c) {
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be_solid(c);
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for(int i=0; i<c->type; i++) {
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twalker cw0(c, i);
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twalker cw(c, i);
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cw+=wstep;
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int val = 0;
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while(cw.at != cw0.at) {
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ufind(cw0); ufind(cw);
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be_solid(cw.at);
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cw++;
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cw+=wstep;
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val++;
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if(val > 1000)
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throw rulegen_failure("excessive valence problem");
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}
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}
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int bestd = get_parent_dir(c);
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if(bestd == -1) bestd = 0;
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indenter ind(2);
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@ -716,6 +853,7 @@ void rules_iteration_for(tcell *c) {
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cq.push_back(c->cmove(d));
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}
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else if(ts.rules != cids) {
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handle_distance_errors();
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auto& r = ts.rules;
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if(debugflags & DF_GEOM) {
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println(hlog, "merging ", ts.rules, " vs ", cids);
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@ -1099,6 +1237,7 @@ void rules_iteration() {
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rules_iteration_for(cq[i]);
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}
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handle_distance_errors();
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if(debugflags & DF_GEOM)
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println(hlog, "number of treestates = ", isize(treestates));
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rule_root = get_code(t_origin[0]).second;
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@ -1159,6 +1298,7 @@ void rules_iteration() {
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// print_rules();
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handle_distance_errors();
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branch_hashes.clear();
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for(int id=0; id<isize(treestates); id++) if(treestates[id].is_live) {
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@ -1179,6 +1319,7 @@ void rules_iteration() {
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if(r[a] == DIR_UNKNOWN) r[a] = DIR_RIGHT;
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}
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handle_distance_errors();
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if(isize(important) != N)
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throw mismatch_error();
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@ -1193,13 +1334,14 @@ void rules_iteration() {
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if(isize(important) != N)
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throw mismatch_error();
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handle_distance_errors();
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}
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void clear_tcell_data() {
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auto c = first_tcell;
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while(c) {
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c->is_solid = false;
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c->dist = MYSTERY;
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// c->dist = MYSTERY;
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c->parent_dir = MYSTERY;
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c->code = MYSTERY;
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c->distance_fixed = false;
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@ -1214,6 +1356,7 @@ void cleanup() {
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code_to_id.clear();
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split.clear();
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important.clear();
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shortcuts.clear();
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}
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void clear_all() {
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@ -1251,8 +1394,6 @@ EX void generate_rules() {
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throw rulegen_surrender("conversion failure");
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}
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prepare_around_radius = 1;
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clear_all();
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analyzers.clear();
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