mirror of
https://github.com/zenorogue/hyperrogue.git
synced 2024-11-24 05:17:17 +00:00
570 lines
18 KiB
C++
570 lines
18 KiB
C++
// Hyperbolic Rogue -- regular honeycombs
|
|
// works with spherical and hyperbolic ones -- Euclidean cubic tiling implemented in euclid.cpp
|
|
// hyperbolic honeycombs rely on binary:: to deal with floating point errors (just like archimedean)
|
|
// Copyright (C) 2011-2019 Zeno Rogue, see 'hyper.cpp' for details
|
|
|
|
namespace hr {
|
|
#if MAXMDIM >= 4
|
|
transmatrix cpush(int cid, ld alpha);
|
|
transmatrix cspin(int a, int b, ld alpha);
|
|
extern
|
|
vector<hpcshape> shWall3D, shMiniWall3D;
|
|
namespace binary {
|
|
void build_tmatrix();
|
|
void virtualRebaseSimple(heptagon*& base, transmatrix& at);
|
|
int celldistance3(heptagon *c1, heptagon *c2);
|
|
hyperpoint deparabolic3(hyperpoint h);
|
|
}
|
|
|
|
namespace reg3 {
|
|
|
|
map<int, int> close_distances;
|
|
|
|
int bucketer(ld x) {
|
|
return int(x * 10 + 100000.5) - 100000;
|
|
}
|
|
|
|
int bucketer(hyperpoint h) {
|
|
return bucketer(h[0]) + 1000 * bucketer(h[1]) + 1000000 * bucketer(h[2]);
|
|
}
|
|
|
|
int loop, face;
|
|
|
|
vector<hyperpoint> cellshape;
|
|
|
|
transmatrix spins[12], adjmoves[12];
|
|
|
|
ld adjcheck, strafedist;
|
|
bool dirs_adjacent[16][16];
|
|
|
|
template<class T> ld binsearch(ld dmin, ld dmax, const T& f) {
|
|
for(int i=0; i<200; i++) {
|
|
ld d = (dmin + dmax) / 2;
|
|
if(f(d)) dmax = d;
|
|
else dmin = d;
|
|
}
|
|
return dmin;
|
|
}
|
|
|
|
void generate() {
|
|
|
|
using namespace hyperpoint_vec;
|
|
|
|
if(S7 == 4) face = 3;
|
|
if(S7 == 6) face = 4;
|
|
if(S7 == 12) face = 5;
|
|
if(S7 == 8) face = 3;
|
|
/* icosahedron not implemented */
|
|
loop = ginf[geometry].tiling_name[5] - '0';
|
|
println(hlog, "face = ", face, " loop = ", loop, " S7 = ", S7);
|
|
|
|
ld dual_angle = binsearch(0, M_PI, [&] (ld d) {
|
|
hyperpoint h0 = cpush(0, 1) * C0;
|
|
hyperpoint h1 = cspin(0, 1, d) * h0;
|
|
hyperpoint h2 = cspin(1, 2, 2*M_PI/loop) * h1;
|
|
return hdist(h0, h1) > hdist(h1, h2);
|
|
});
|
|
|
|
ld dodecahedron_angle = binsearch(0, M_PI, [&] (ld d) {
|
|
hyperpoint h0 = cpush(0, 1) * C0;
|
|
hyperpoint h1 = cspin(0, 1, d) * h0;
|
|
hyperpoint h2 = cspin(1, 2, 2*M_PI/face) * h1;
|
|
return hdist(h0, h1) > hdist(h1, h2);
|
|
});
|
|
|
|
if(S7 == 8) {
|
|
/* 24-cell is a special case because it is the only one with '4' in the middle of the Schlaefli symbol. */
|
|
/* The computations above assume 3 */
|
|
hyperpoint h1 = hpxy3(.5,.5,.5);
|
|
hyperpoint h2 = hpxy3(.5,.5,-.5);
|
|
dual_angle = hdist(h1, h2);
|
|
}
|
|
|
|
println(hlog, "dodecahedron angle = ", dodecahedron_angle);
|
|
println(hlog, "dual angle = ", dual_angle);
|
|
|
|
ld inp_length = binsearch(0, 1.55, [&] (ld d) {
|
|
hyperpoint h = xpush(-d) * spin(2*M_PI/face) * xpush0(d);
|
|
ld alpha = M_PI - atan2(-h[1], h[0]);
|
|
return (alpha < dual_angle / 2) ? hyperbolic : sphere;
|
|
});
|
|
|
|
println(hlog, "inp length = ", inp_length);
|
|
|
|
ld edge_length = hdist(xpush0(inp_length), spin(2*M_PI/face) * xpush0(inp_length));
|
|
if(S7 == 8) edge_length = hdist(normalize(hpxyz3(1,1,0,0)), normalize(hpxyz3(1,0,1,0)));
|
|
println(hlog, "edge length = ", edge_length);
|
|
|
|
hyperpoint h0 = cpush(0, 1) * C0;
|
|
hyperpoint h1 = cspin(0, 1, dodecahedron_angle) * h0;
|
|
hyperpoint h2 = cspin(1, 2, 2*M_PI/face) * h1;
|
|
hyperpoint h3 = cspin(1, 2, -2*M_PI/face) * h1;
|
|
hyperpoint a2 = S7 == 8 ? normalize(h1 + h2) : normalize(h0 + h1 + h2);
|
|
hyperpoint a3 = S7 == 8 ? normalize(h1 + h3) : normalize(h0 + h1 + h3);
|
|
|
|
println(hlog, "S7 = ", S7);
|
|
|
|
ld whereonline = binsearch(0, 5, [&] (ld d) {
|
|
// sometimes breaks in elliptic
|
|
dynamicval<eGeometry> g(geometry, elliptic ? gCell120 : geometry);
|
|
hyperpoint z2 = a2 * d + C0 * (1-d);
|
|
if(hyperbolic && intval(z2, Hypc) >= 0) return true;
|
|
hyperpoint b2 = normalize(z2);
|
|
hyperpoint z3 = a3 * d + C0 * (1-d);
|
|
hyperpoint b3 = normalize(z3);
|
|
return hdist(b2, b3) >= edge_length;
|
|
});
|
|
|
|
println(hlog, "whereonline = ", whereonline);
|
|
a2 = normalize(a2 * whereonline + C0 * (1-whereonline));
|
|
a3 = normalize(a3 * whereonline + C0 * (1-whereonline));
|
|
|
|
hyperpoint mid = Hypc;
|
|
for(int i=0; i<face; i++) mid += cspin(1, 2, 2*i*M_PI/face) * a2;
|
|
mid = normalize(mid);
|
|
ld between_centers = 2 * hdist0(mid);
|
|
println(hlog, "between_centers = ", between_centers);
|
|
|
|
if(S7 == 12 || S7 == 8) {
|
|
spins[0] = Id;
|
|
spins[1] = cspin(0, 1, dodecahedron_angle) * cspin(1, 2, M_PI);
|
|
for(int a=2; a<face+1; a++) spins[a] = cspin(1, 2, 2*M_PI*(a-1)/face) * spins[1];
|
|
for(int a=S7/2; a<S7; a++) spins[a] = cspin(0, 1, M_PI) * spins[a-S7/2];
|
|
}
|
|
|
|
if(S7 == 6) {
|
|
spins[0] = Id;
|
|
spins[1] = cspin(0, 1, dodecahedron_angle) * cspin(1, 2, M_PI);
|
|
spins[2] = cspin(1, 2, M_PI/2) * spins[1];
|
|
for(int a=S7/2; a<S7; a++) spins[a] = spins[a-S7/2] * cspin(0, 1, M_PI);
|
|
}
|
|
|
|
if(S7 == 4) {
|
|
spins[0] = Id;
|
|
spins[1] = cspin(0, 1, dodecahedron_angle) * cspin(1, 2, M_PI);
|
|
for(int a=2; a<face+1; a++) spins[a] = cspin(1, 2, 2*M_PI*(a-1)/face) * spins[1];
|
|
}
|
|
|
|
cellshape.clear();
|
|
for(int a=0; a<S7; a++)
|
|
for(int b=0; b<face; b++)
|
|
cellshape.push_back(spins[a] * cspin(1, 2, 2*M_PI*b/face) * a2);
|
|
|
|
adjmoves[0] = cpush(0, between_centers) * cspin(0, 2, M_PI);
|
|
for(int i=1; i<S7; i++) adjmoves[i] = spins[i] * adjmoves[0];
|
|
|
|
for(int a=0; a<S7; a++)
|
|
println(hlog, "center of ", a, " is ", tC0(adjmoves[a]));
|
|
|
|
println(hlog, "doublemove = ", tC0(adjmoves[0] * adjmoves[0]));
|
|
|
|
adjcheck = hdist(tC0(adjmoves[0]), tC0(adjmoves[1])) * 1.0001;
|
|
|
|
int numedges = 0;
|
|
for(int a=0; a<S7; a++) for(int b=0; b<S7; b++) {
|
|
dirs_adjacent[a][b] = a != b && hdist(tC0(adjmoves[a]), tC0(adjmoves[b])) < adjcheck;
|
|
if(dirs_adjacent[a][b]) numedges++;
|
|
}
|
|
println(hlog, "numedges = ", numedges);
|
|
|
|
if(loop == 4) strafedist = adjcheck;
|
|
else strafedist = hdist(adjmoves[0] * C0, adjmoves[1] * C0);
|
|
}
|
|
|
|
void binary_rebase(heptagon *h, const transmatrix& V) {
|
|
}
|
|
|
|
void test();
|
|
|
|
struct hrmap_reg3 : hrmap {
|
|
|
|
heptagon *origin;
|
|
hrmap *binary_map;
|
|
|
|
unordered_map<heptagon*, pair<heptagon*, transmatrix>> reg_gmatrix;
|
|
unordered_map<heptagon*, vector<pair<heptagon*, transmatrix> > > altmap;
|
|
|
|
hrmap_reg3() {
|
|
generate();
|
|
origin = tailored_alloc<heptagon> (S7);
|
|
heptagon& h = *origin;
|
|
h.s = hsOrigin;
|
|
h.cdata = NULL;
|
|
h.alt = NULL;
|
|
h.distance = 0;
|
|
h.c7 = newCell(S7, origin);
|
|
worst_error1 = 0, worst_error2 = 0;
|
|
|
|
dynamicval<hrmap*> cr(currentmap, this);
|
|
|
|
heptagon *alt = NULL;
|
|
transmatrix T = Id;
|
|
|
|
if(hyperbolic) {
|
|
dynamicval<eGeometry> g(geometry, gBinary3);
|
|
binary::build_tmatrix();
|
|
alt = tailored_alloc<heptagon> (S7);
|
|
alt->s = hsOrigin;
|
|
alt->emeraldval = 0;
|
|
alt->zebraval = 0;
|
|
alt->distance = 0;
|
|
alt->alt = alt;
|
|
alt->cdata = NULL;
|
|
alt->c7 = NULL;
|
|
binary_map = binary::new_alt_map(alt);
|
|
T = xpush(.01241) * spin(1.4117) * xpush(0.1241) * cspin(0, 2, 1.1249) * xpush(0.07) * Id;
|
|
}
|
|
else binary_map = NULL;
|
|
|
|
reg_gmatrix[origin] = make_pair(alt, T);
|
|
altmap[alt].emplace_back(origin, T);
|
|
|
|
celllister cl(origin->c7, 4, 100000, NULL);
|
|
for(cell *c: cl.lst) {
|
|
hyperpoint h = tC0(relative_matrix(c->master, origin));
|
|
close_distances[bucketer(h)] = cl.getdist(c);
|
|
}
|
|
}
|
|
|
|
ld worst_error1, worst_error2;
|
|
|
|
heptagon *getOrigin() {
|
|
return origin;
|
|
}
|
|
|
|
void fix_distances(heptagon *h, heptagon *h2) {
|
|
vector<heptagon*> to_fix;
|
|
|
|
auto fix_pair = [&] (heptagon *h, heptagon *h2) {
|
|
if(!h2) return;
|
|
if(h->distance > h2->distance+1) {
|
|
h->distance = h2->distance + 1;
|
|
to_fix.push_back(h);
|
|
}
|
|
else if(h2->distance > h->distance+1) {
|
|
h2->distance = h->distance + 1;
|
|
to_fix.push_back(h2);
|
|
}
|
|
if(h->alt && h->alt == h2->alt) {
|
|
if(altdist(h) > altdist(h2) + 1) {
|
|
altdist(h) = altdist(h2) + 1;
|
|
to_fix.push_back(h);
|
|
}
|
|
else if (altdist(h2) > altdist(h) + 1) {
|
|
altdist(h2) = altdist(h) + 1;
|
|
to_fix.push_back(h2);
|
|
}
|
|
}
|
|
};
|
|
|
|
if(!h2) to_fix = {h};
|
|
else fix_pair(h, h2);
|
|
|
|
for(int i=0; i<isize(to_fix); i++) {
|
|
h = to_fix[i];
|
|
for(int j=0; j<S7; j++) fix_pair(h, h->move(j));
|
|
}
|
|
}
|
|
|
|
#define DEB 0
|
|
|
|
heptagon *create_step(heptagon *parent, int d) {
|
|
auto& p1 = reg_gmatrix[parent];
|
|
if(DEB) println(hlog, "creating step ", parent, ":", d, ", at ", p1.first, tC0(p1.second));
|
|
heptagon *alt = p1.first;
|
|
transmatrix T = p1.second * adjmoves[d];
|
|
transmatrix T1 = T;
|
|
if(hyperbolic) {
|
|
dynamicval<eGeometry> g(geometry, gBinary3);
|
|
dynamicval<hrmap*> cm(currentmap, binary_map);
|
|
binary::virtualRebaseSimple(alt, T);
|
|
}
|
|
|
|
fixmatrix(T);
|
|
auto hT = tC0(T);
|
|
|
|
if(DEB) println(hlog, "searching at ", alt, ":", hT);
|
|
|
|
if(DEB) for(auto& p2: altmap[alt]) println(hlog, "for ", tC0(p2.second), " intval is ", intval(tC0(p2.second), hT));
|
|
|
|
ld err;
|
|
|
|
for(auto& p2: altmap[alt]) if((err = intval(tC0(p2.second), hT)) < 1e-3) {
|
|
if(err > worst_error1) println(hlog, format("worst_error1 = %lg", double(worst_error1 = err)));
|
|
// println(hlog, "YES found in ", isize(altmap[alt]));
|
|
if(DEB) println(hlog, "-> found ", p2.first);
|
|
int fb = 0;
|
|
hyperpoint old = T * (inverse(T1) * tC0(p1.second));
|
|
for(int d2=0; d2<S7; d2++) {
|
|
hyperpoint back = p2.second * tC0(adjmoves[d2]);
|
|
if((err = intval(back, old)) < 1e-3) {
|
|
if(err > worst_error2) println(hlog, format("worst_error2 = %lg", double(worst_error2 = err)));
|
|
if(p2.first->move(d2)) println(hlog, "error: repeated edge");
|
|
p2.first->c.connect(d2, parent, d, false);
|
|
fix_distances(p2.first, parent);
|
|
fb++;
|
|
}
|
|
}
|
|
if(fb != 1) {
|
|
println(hlog, "found fb = ", fb);
|
|
println(hlog, old);
|
|
for(int d2=0; d2<S7; d2++) {
|
|
println(hlog, p2.second * tC0(adjmoves[d2]), " in distance ", intval(p2.second * tC0(adjmoves[d2]), old));
|
|
}
|
|
parent->c.connect(d, parent, d, false);
|
|
return parent;
|
|
}
|
|
return p2.first;
|
|
}
|
|
|
|
if(DEB) println(hlog, "-> not found");
|
|
heptagon *created = tailored_alloc<heptagon> (S7);
|
|
created->c7 = newCell(S7, created);
|
|
created->alt = NULL;
|
|
created->cdata = NULL;
|
|
created->zebraval = hrand(10);
|
|
created->distance = parent->distance + 1;
|
|
fixmatrix(T);
|
|
reg_gmatrix[created] = make_pair(alt, T);
|
|
altmap[alt].emplace_back(created, T);
|
|
created->c.connect(0, parent, d, false);
|
|
return created;
|
|
}
|
|
|
|
~hrmap_reg3() {
|
|
if(binary_map) {
|
|
dynamicval<eGeometry> g(geometry, gBinary3);
|
|
delete binary_map;
|
|
}
|
|
clearfrom(origin);
|
|
}
|
|
|
|
map<heptagon*, int> reducers;
|
|
|
|
void link_alt(const cellwalker& hs) override {
|
|
auto h = hs.at->master;
|
|
altdist(h) = 0;
|
|
if(h->alt->s != hsOrigin) reducers[h] = hs.spin;
|
|
}
|
|
|
|
void generateAlts(heptagon* h, int levs, bool link_cdata) override {
|
|
if(reducers.count(h)) {
|
|
heptspin hs(h, reducers[h]);
|
|
reducers.erase(h);
|
|
hs += wstep;
|
|
hs += rev;
|
|
altdist(hs.at) = altdist(h) - 1;
|
|
hs.at->alt = h->alt;
|
|
reducers[hs.at] = hs.spin;
|
|
}
|
|
for(int i=0; i<S7; i++) {
|
|
auto h2 = h->cmove(i);
|
|
if(h2->alt == NULL) {
|
|
h2->alt = h->alt;
|
|
altdist(h2) = altdist(h) + 1;
|
|
fix_distances(h2, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw() {
|
|
sphereflip = Id;
|
|
|
|
// for(int i=0; i<S6; i++) queuepoly(ggmatrix(cwt.at), shWall3D[i], 0xFF0000FF);
|
|
|
|
dq::visited.clear();
|
|
dq::enqueue(viewctr.at, cview());
|
|
|
|
while(!dq::drawqueue.empty()) {
|
|
auto& p = dq::drawqueue.front();
|
|
heptagon *h = get<0>(p);
|
|
transmatrix V = get<1>(p);
|
|
dynamicval<ld> b(band_shift, get<2>(p));
|
|
bandfixer bf(V);
|
|
dq::drawqueue.pop();
|
|
|
|
|
|
cell *c = h->c7;
|
|
if(!do_draw(c, V)) continue;
|
|
drawcell(c, V, 0, false);
|
|
|
|
for(int i=0; i<S7; i++)
|
|
if(h->move(i))
|
|
dq::enqueue(h->move(i), V * relative_matrix(h->move(i), h));
|
|
}
|
|
}
|
|
|
|
transmatrix relative_matrix(heptagon *h2, heptagon *h1) {
|
|
auto p1 = reg_gmatrix[h1];
|
|
auto p2 = reg_gmatrix[h2];
|
|
transmatrix T = Id;
|
|
if(hyperbolic) {
|
|
dynamicval<eGeometry> g(geometry, gBinary3);
|
|
dynamicval<hrmap*> cm(currentmap, binary_map);
|
|
T = binary_map->relative_matrix(p2.first, p1.first);
|
|
}
|
|
return inverse(p1.second) * T * p2.second;
|
|
}
|
|
|
|
};
|
|
|
|
hrmap* new_map() {
|
|
return new hrmap_reg3;
|
|
}
|
|
|
|
hrmap_reg3* regmap() {
|
|
return ((hrmap_reg3*) currentmap);
|
|
}
|
|
|
|
int celldistance(cell *c1, cell *c2) {
|
|
if(c1 == c2) return 0;
|
|
if(c1 == currentmap->gamestart()) return c2->master->distance;
|
|
if(c2 == currentmap->gamestart()) return c1->master->distance;
|
|
|
|
auto r = regmap();
|
|
|
|
hyperpoint h = tC0(r->relative_matrix(c1->master, c2->master));
|
|
int b = bucketer(h);
|
|
if(close_distances.count(b)) return close_distances[b];
|
|
|
|
dynamicval<eGeometry> g(geometry, gBinary3);
|
|
return 20 + binary::celldistance3(r->reg_gmatrix[c1->master].first, r->reg_gmatrix[c2->master].first);
|
|
}
|
|
|
|
bool pseudohept(cell *c) {
|
|
auto m = regmap();
|
|
if(sphere) {
|
|
hyperpoint h = tC0(m->relative_matrix(c->master, regmap()->origin));
|
|
if(S7 == 12) {
|
|
hyperpoint h1 = cspin(0, 1, atan2(16, 69) + M_PI/4) * h;
|
|
for(int i=0; i<4; i++) if(abs(abs(h1[i]) - .5) > .01) return false;
|
|
return true;
|
|
}
|
|
if(S7 == 8)
|
|
return h[3] >= .99 || h[3] <= -.99 || abs(h[3]) < .01;
|
|
if(loop == 3 && face == 3 && S7 == 4)
|
|
return c == m->gamestart();
|
|
if(loop == 4 && face == 3)
|
|
return abs(h[3]) > .9;
|
|
if(loop == 3 && face == 4)
|
|
return abs(h[3]) > .9;
|
|
if(loop == 5 && face == 3)
|
|
return abs(h[3]) > .99 || abs(h[0]) > .99 || abs(h[1]) > .99 || abs(h[2]) > .99;
|
|
}
|
|
if(hyperbolic) {
|
|
heptagon *h = m->reg_gmatrix[c->master].first;
|
|
return (h->zebraval == 1) && (h->distance & 1);
|
|
}
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
/* More precise, but very slow distance. Not used/optimized for now */
|
|
|
|
ld adistance(cell *c) {
|
|
hyperpoint h = tC0(regmap()->reg_gmatrix[c->master].second);
|
|
h = binary::deparabolic3(h);
|
|
return regmap()->reg_gmatrix[c->master].first->distance * log(2) - h[0];
|
|
}
|
|
|
|
unordered_map<pair<cell*, cell*>, int> memo;
|
|
|
|
bool cdd;
|
|
|
|
int celldistance(cell *c1, cell *c2) {
|
|
if(memo.count(make_pair(c1, c2))) return memo[make_pair(c1, c2)];
|
|
if(c1 == c2) return 0;
|
|
vector<cell*> v[2];
|
|
v[0].push_back(c1);
|
|
v[1].push_back(c2);
|
|
|
|
int steps = 0;
|
|
|
|
map<cell*, int> visited;
|
|
visited[c1] = 1;
|
|
visited[c2] = 2;
|
|
|
|
while(true) {
|
|
if(cdd) {
|
|
println(hlog, "state ", steps, "/",isize(v[0]), "/", isize(v[1]));
|
|
println(hlog, " A: ", v[0]);
|
|
println(hlog, " B: ", v[1]);
|
|
}
|
|
for(int i: {0,1}) {
|
|
vector<cell*> new_v;
|
|
for(cell *c: v[i]) forCellCM(cn, c) if(adistance(cn) < adistance(c)) {
|
|
auto &vi = visited[cn];
|
|
if((vi&3) == 0) {
|
|
vi = 4 * (steps+1);
|
|
vi |= (1<<i);
|
|
new_v.push_back(cn);
|
|
}
|
|
else if((vi&3) == 2-i) {
|
|
vector<pair<cell*, int>> ca1, ca2;
|
|
int b1 = 4*steps-4;
|
|
int b2 = ((vi>>2)<<2) - 4;
|
|
for(auto p: visited) {
|
|
if(cdd) println(hlog, p);
|
|
int ps = p.second & 3;
|
|
if(ps == 1+i && p.second >= b1)
|
|
ca1.emplace_back(p.first, p.second/4);
|
|
if(ps == 2-i && p.second >= b2 && p.second <= b2+8)
|
|
ca2.emplace_back(p.first, p.second/4);
|
|
}
|
|
int bound = 1<<16;
|
|
for(auto p1: ca1) for(auto p2: ca2) {
|
|
hyperpoint h = tC0(relative_matrix(p1.first->master, p2.first->master));
|
|
int b = bucketer(h);
|
|
if(close_distances.count(b)) {
|
|
int d = close_distances[b] + p1.second + p2.second;
|
|
if(cdd) println(hlog, "candidate: close=", close_distances[b], p1, p2, "; h = ", h);
|
|
if(d < bound) bound = d;
|
|
}
|
|
else if(cdd) println(hlog, "bucket missing");
|
|
}
|
|
return memo[make_pair(c1, c2)] = bound;
|
|
return bound;
|
|
}
|
|
}
|
|
v[i] = std::move(new_v);
|
|
}
|
|
steps++;
|
|
}
|
|
}
|
|
|
|
cellwalker target;
|
|
int tsteps;
|
|
|
|
int dist_alt(cell *c) {
|
|
if(!target.at) {
|
|
target = cellwalker(currentmap->gamestart(), 0);
|
|
tsteps = 0;
|
|
for(int i=0; i<30; i++) target += wstep, target += rev, tsteps++;
|
|
}
|
|
if(specialland == laCamelot) return reg3::celldistance(c, target.at);
|
|
else {
|
|
int d = reg3::celldistance(c, target.at) - tsteps;
|
|
if(d < 10) target += wstep, target += rev, tsteps++;
|
|
return d;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Construct a cellwalker in direction j from cw.at, such that its direction is as close
|
|
// as possible to cw.spin. Assume that j and cw.spin are adjacent
|
|
|
|
cellwalker strafe(cellwalker cw, int j) {
|
|
hyperpoint hfront = tC0(adjmoves[cw.spin]);
|
|
transmatrix T = currentmap->relative_matrix(cw.at->cmove(j)->master, cw.at->master);
|
|
for(int i=0; i<S7; i++) if(i != cw.at->c.spin(j))
|
|
if(hdist(hfront, T * tC0(adjmoves[i])) < strafedist + .01)
|
|
return cellwalker(cw.at->move(j), i);
|
|
println(hlog, "incorrect strafe");
|
|
exit(1);
|
|
}
|
|
|
|
}
|
|
}
|
|
|