mirror of
https://github.com/zenorogue/hyperrogue.git
synced 2024-12-29 11:30:35 +00:00
ced3bbcad4
C++20 introduces `std::format` and we `using namespace std`, so some of these would be ambiguous in C++20.
462 lines
12 KiB
C++
462 lines
12 KiB
C++
#include "../hyper.h"
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// an implementation of WFC-like constraint satisfaction problem using polytime dynamic programming
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// see: https://arxiv.org/abs/2002.09534
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// usage: hyper -canvas 0 -dynamic-wfc [constraint] [cutoff] [radius]
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// where constraint is one of:
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// 0: every cell has 2 yellow neighbors
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// 1: every cell's neighborhood has two consistent regions
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// 2: every cell's neighborhood has four consistent regions
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// 3: landscape: every cell has 1 consistent region of next type and 1 region of prev type
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// cutoff is cut off from the disk
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// radius is the radius of the disk to generate
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namespace hr {
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namespace dynamic_wfc {
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bool animated = false;
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vector<cell*> generate_pd_list(celllister& cl) {
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cell *croot = cl.lst.back();
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cellwalker cw(croot, 0);
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while(cl.listed(cw.peek())) cw++;
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while(!cl.listed(cw.peek())) cw++;
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vector<cell*> currpath = {};
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cellwalker cw1 = cw;
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vector<cell*> result;
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// int steps = 0;
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auto push = [&] (cell *c) {
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// println(hlog, "push ", c, " at ", isize(currpath));
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currpath.push_back(c);
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result.push_back(c);
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};
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auto pop = [&] () {
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// println(hlog, "pop ", currpath.back(), " at ", isize(currpath)-1);
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currpath.pop_back();
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};
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auto replace = [&] (int pos, cell *c) {
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// println(hlog, "replace ", currpath[pos], " to ", c, " at ", pos, "/", isize(currpath));
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currpath[pos] = c;
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result.push_back(c);
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};
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push(croot);
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while(true) {
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cw += wstep;
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cw++;
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while(!cl.listed(cw.peek())) cw++;
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cell *cn = cw.at;
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// cn->item = itGold;
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// println(hlog, "at ", cn, " [", steps++, "]");
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int cd = celldistance(cn, croot) + 1;
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if(cd > isize(currpath))
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push(cn);
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else {
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if(cd < isize(currpath))
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pop();
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if(currpath.back() != cn) {
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int moves = 1;
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while(celldistance(currpath[cd-1-moves], cn) > moves) {
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moves++;
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continue;
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}
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while(moves > 0) {
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moves--;
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forCellEx(cx, currpath[cd-2-moves])
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if(celldistance(cx, cn) == moves)
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replace(cd-1-moves, cx);
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}
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}
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}
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/*
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cell *last = nullptr;
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for(cell *c: currpath) {
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if(last) print(hlog, " ", celldistance(c, last), " ");
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last = c;
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print(hlog, c);
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}
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println(hlog); */
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for(int i=1; i<isize(currpath); i++)
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if(celldistance(currpath[i-1], currpath[i]) != 1)
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println(hlog, "PD error");
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if(cw == cw1) break;
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}
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return result;
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}
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struct ttrans {
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int news;
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int olds;
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float proportion;
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char id;
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};
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vector<ttrans> trans;
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vector<cell*> ctf;
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vector<cell*> global_list;
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int wfctype, wfcrad, cutoff;
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void wfc_clear() {
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trans.clear();
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ctf.clear();
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global_list.clear();
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}
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void wfc_build() {
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int code_at = trans.back().news;
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int cpos = isize(ctf);
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for(int i=isize(trans)-1; i>=0; i--) {
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auto& tri = trans[i];
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if(tri.news == code_at) {
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// println(hlog, tie(tri.news, tri.olds, tri.proportion, tri.where, tri.id));
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if(hrandf() < tri.proportion) {
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cell *c = ctf[--cpos];
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int id = tri.id;
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switch(wfctype) {
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case 0:
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if(id == 0) c->wall = waNone, c->landparam = 0xFF4040;
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else c->wall = waNone, c->landparam = 0xFFFF40;
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break;
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case 1:
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if(id == 0) c->wall = waNone, c->landparam = 0x4040FF;
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else c->wall = waNone, c->landparam = 0x40FF40;
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break;
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case 2:
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if(id == 0) c->wall = waNone, c->landparam = 0x8080FF;
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else c->wall = waNone, c->landparam = 0x202020;
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break;
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case 3:
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if(id == 0) c->wall = waNone, c->landparam = 0xC08080;
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else if(id == 1) c->wall = waNone, c->landparam = 0x80C080;
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else c->wall = waNone, c->landparam = 0x8080C0;
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break;
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}
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// println(hlog, code_at, " -> ", tri.olds, " [", tri.where, "=", tri.id, "]");
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code_at = tri.olds;
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}
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}
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}
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}
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void wfc() {
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int rad = wfcrad;
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vector< vector< vector<cell*> > > new_neighborhoods;
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map<cell*, int> lorder;
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map<cell*, int> multiplicity;
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set<cell*> consider;
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celllister cl(cwt.at, rad, 999999, nullptr);
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for(cell *c: cl.lst) setdist(c, 7, nullptr);
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auto l = generate_pd_list(cl);
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int ls = isize(l);
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for(int i=0; i<ls; i++) lorder[l[i]] = i;
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println(hlog, "lorder[0] = ", l[0]);
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for(int i=0; i<ls; i++) {
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// int dctr = celldistance(l[i], cwt.at);
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int dfirst = celldistance(l[i], l[0]);
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// int dtotal = celldistance(l[0], cwt.at);
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//if(dtotal == dfirst + dctr && dfirst < cutoff) ;
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//else
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if(dfirst >= cutoff)
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consider.insert(l[i]);
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}
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new_neighborhoods.resize(ls);
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for(cell *c: cl.lst) {
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bool ok = true;
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forCellEx(c1, c) if(!consider.count(c1)) ok = false;
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if(!ok) continue;
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vector<cell*> nn = {c};
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forCellEx(c1, c) nn.push_back(c1);
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for(auto cx: nn) multiplicity[cx]++;
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int max_order = -1;
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for(auto cx: nn) max_order = max(max_order, lorder[cx]);
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new_neighborhoods[max_order].push_back(nn);
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}
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int typecount = 2;
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if(wfctype == 3) typecount++;
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vector<cell*> inpath;
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typedef unsigned long long code_t;
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const int cpo = 2;
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const code_t mask = (1<<cpo)-1;
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struct freqdata {
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code_t code;
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int id;
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double prob;
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};
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vector<freqdata> freq = { freqdata{0, 0, 1} };
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vector<freqdata> nfreq;
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trans.clear();
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int nextcode = 1;
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int all = 2 << (cpo * 8);
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vector<double> mul(all, 0);
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for(int a=0; a<all; a++) {
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vector<int> v;
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int a0 = a;
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while(a0) { v.push_back(a0 & mask); a0 >>= cpo; }
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if(isize(v) < 2) continue;
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v.pop_back();
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int cur = v.back();
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v.pop_back();
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int changes = 0;
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for(int i=1; i<isize(v); i++) if(v[i] == 1 && v[i-1] == 0) changes++;
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if(v[0] == 1 && v.back() == 0) changes++;
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int nes = 0;
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for(int vv: v) nes += vv;
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switch(wfctype) {
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case 0:
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mul[a] = nes == 2;
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break;
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case 1:
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mul[a] = changes == 1;
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break;
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case 2:
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mul[a] = changes == 2;
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break;
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case 3: {
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int ca=0, cb=0, cc=0, cd=0, ce=0;
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int cur1 = (cur+1) % 3;
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int cur2 = (cur+2) % 3;
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int same = 0;
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int in1 = 0;
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int in2 = 0;
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for(int i=0; i<isize(v); i++) {
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auto va = v[i], vb = v[(i+1)%isize(v)];
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if(va == cur && vb == cur1) ca++;
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if(va == cur && vb == cur2) cb++;
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if(va == cur1 && vb == cur) cc++;
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if(va == cur2 && vb == cur) cd++;
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if(va == cur1 && vb == cur2) ce++;
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if(va == cur2 && vb == cur1) ce++;
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if(va == cur) same++;
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if(va == cur1) in1++;
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if(va == cur2) in2++;
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}
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mul[a] = ca==1 && cb==1 && cc==1 && cd==1 && ce==0; // && in1 >= 2; // && in2 >= 2;
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if(mul[a]) println(hlog, v, cur, " => ", mul[a]);
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break;
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}
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}
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// println(hlog, a, ": ", v, " -> ", mul[a]);
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}
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/*
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mul[0] = 0;
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for(int a=0; a<8; a++)
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mul[1<<a] = 1;
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*/
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long long tfreq = 0;
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if(animated)
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for(int j=0; j<ls; j++)
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for(auto& nns: new_neighborhoods[j]) for(auto c: nns) c->landparam = 0x202020;
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for(int i=0; i<ls; i++) if(consider.count(l[i])) {
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tfreq += isize(freq);
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string s = lalign(0, i, "/", ls, ": freqs = ", isize(freq), " inpath ", isize(inpath));
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println(hlog, s);
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if(animated) {
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for(int j=0; j<i; j++)
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for(auto& nns: new_neighborhoods[j]) for(auto c: nns) c->landparam = multiplicity[c] ? 0xFFFF00 : 0x00FF00;
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for(auto& nns: new_neighborhoods[i]) for(auto c: nns) c->landparam = 0xFFFFFF;
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history::progress(s);
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}
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inpath.push_back(l[i]);
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int sh = cpo * (isize(inpath)-1);
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for(auto& p: freq) if(p.prob) for(char c=0; c<typecount; c++) {
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nfreq.emplace_back(p);
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nfreq.back().code |= (code_t(c) << sh);
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}
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freq = std::move(nfreq);
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nfreq = {};
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// println(hlog, "inpath = ", inpath);
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// println(hlog, "freqs = ", isize(freq));
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if(isize(freq) > 500000000) {
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println(hlog, "freq overflow");
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exit(3);
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}
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fflush(stdout);
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global_list = cl.lst;
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for(auto& nns: new_neighborhoods[i]) {
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// println(hlog, "acknowledge ", nns);
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fflush(stdout);
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vector<int> sids;
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for(auto cz: nns) {
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for(int id=0; id<isize(inpath); id++) if(inpath[id] == cz) sids.push_back(id);
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}
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for(auto& p: freq) {
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unsigned code = 1;
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for(int v: sids) code = (code << cpo) | ((p.code >> (cpo*v)) & mask);
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p.prob *= mul[code];
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}
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for(auto cz: nns) {
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multiplicity[cz]--;
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if(multiplicity[cz] == 0) {
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ctf.push_back(cz);
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// println(hlog, "remove ", cz, " (#", lorder[cz], ") from ", inpath);
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fflush(stdout);
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int is = isize(inpath)-1;
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int id = 0;
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while(id <= is && inpath[id] != cz) id++;
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if(id > is) {
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println(hlog, "error");
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exit(4);
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}
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inpath[id] = inpath[is];
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inpath.resize(is);
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for(auto& p: freq) if(p.prob) {
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nfreq.push_back(p);
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int tid = (p.code >> (cpo*id)) & mask;
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code_t& s = nfreq.back().code;
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s &=~ (mask << (cpo*id));
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if(id < is) s |= ((s >> (cpo*is)) & mask) << (cpo*id);
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s &=~ (mask << (cpo*is));
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// s.resize(is);
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// if(id < is) s[id] = p.code[is];
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nfreq.back().id = (nfreq.back().id << cpo) | tid;
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}
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freq.clear();
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sort(nfreq.begin(), nfreq.end(), [] (const freqdata& a, const freqdata& b) { return a.code < b.code; });
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for(int i=0; i<isize(nfreq); i++) {
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auto &next = nfreq[i];
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if(i == 0 || nfreq[i].code != nfreq[i-1].code) {
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freq.push_back(nfreq[i]);
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freq.back().id = nextcode++;
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freq.back().prob = 0;
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}
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auto& group = freq.back();
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group.prob += next.prob;
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ttrans nt;
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nt.news = group.id;
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nt.olds = next.id >> cpo;
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nt.proportion = next.prob / group.prob;
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nt.id = next.id & mask;
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trans.push_back(nt);
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}
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nfreq.clear();
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}
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}
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}
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}
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if(isize(freq)) println(hlog, "last freq = ", freq[0].prob);
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println(hlog, "freq size = ", isize(freq));
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println(hlog, "tfreq = ", hr::format("%lld", tfreq));
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println(hlog, "trans size = ", isize(trans));
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println(hlog, "next code = ", nextcode);
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clearMessages();
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wfc_build();
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}
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bool wfc_handleKey(int sym, int uni) {
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if(sym == '5') {
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wfc_build();
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return true;
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}
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return false;
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}
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void hwrite(hstream& f, const ttrans& t) {
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hwrite(f, t.news);
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hwrite(f, t.olds);
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hwrite(f, t.proportion);
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hwrite(f, t.id);
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}
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void save(string s) {
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fhstream f(s, "wb");
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vector<int> indices;
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for(auto cf: ctf)
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for(int i=0; i<isize(global_list); i++)
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if(global_list[i] == cf) indices.push_back(i);
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hwrite(f, wfctype);
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hwrite(f, cutoff);
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hwrite(f, wfcrad);
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hwrite(f, indices);
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hwrite(f, trans);
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}
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auto wfc_hook =
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addHook(hooks_args, 100, [] {
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using namespace arg;
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if(0) ;
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else if(argis("-dynamic-wfc")) {
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start_game();
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shift(); wfctype = argi();
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shift(); cutoff = argi();
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shift(); wfcrad = argi();
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wfc();
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}
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else if(argis("-dynamic-wfc-save")) {
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shift(); save(args());
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}
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else if(argis("-wfc-regen-key")) {
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rogueviz::rv_hook(hooks_handleKey, 100, wfc_handleKey);
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}
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else return 1;
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return 0;
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});
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}
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}
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