mirror of
https://github.com/zenorogue/hyperrogue.git
synced 2024-12-26 10:00:42 +00:00
622 lines
17 KiB
C++
622 lines
17 KiB
C++
namespace gp {
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bool on;
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loc param(1, 0);
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hyperpoint next;
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ld scale;
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ld alpha;
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int area;
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loc operator+(loc e1, loc e2) {
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return make_pair(e1.first+e2.first, e1.second+e2.second);
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}
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loc operator-(loc e1, loc e2) {
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return make_pair(e1.first-e2.first, e1.second-e2.second);
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}
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loc operator*(loc e1, loc e2) {
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return make_pair(e1.first*e2.first-e1.second*e2.second,
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e1.first*e2.second + e2.first*e1.second + e1.second*e2.second);
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}
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struct goldberg_mapping_t {
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cellwalker cw;
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char rdir;
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};
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loc eudir(int d) {
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d %= 6; if (d < 0) d += 6;
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switch(d) {
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case 0: return make_pair(1, 0);
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case 1: return make_pair(0, 1);
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case 2: return make_pair(-1, 1);
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case 3: return make_pair(-1, 0);
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case 4: return make_pair(0, -1);
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case 5: return make_pair(1, -1);
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default: return make_pair(0, 0);
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}
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}
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int get_code(const local_info& li) {
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return
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((li.relative.first & 15) << 0) +
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((li.relative.second & 15) << 4) +
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((fix6(li.total_dir)) << 8) +
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((li.last_dir & 15) << 12);
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}
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local_info get_local_info(cell *c) {
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local_info li;
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if(c == c->master->c7) {
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li.relative = loc(0,0);
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li.first_dir = -1;
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li.last_dir = -1;
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li.total_dir = -1;
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}
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else {
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vector<int> dirs;
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while(c != c->master->c7) {
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dirs.push_back(c->spin(0));
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c = c->mov[0];
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}
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li.first_dir = dirs[0];
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li.last_dir = dirs.back();
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loc at(0,0);
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int dir = 0;
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at = at + eudir(dir);
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dirs.pop_back();
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while(dirs.size()) {
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dir += dirs.back() + 3;
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dirs.pop_back();
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at = at + eudir(dir);
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}
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li.relative = at;
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li.total_dir = dir + 3;
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}
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return li;
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}
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int last_dir(cell *c) {
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return get_local_info(c).last_dir;
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}
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loc get_coord(cell *c) {
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return get_local_info(c).relative;
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}
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int pseudohept_val(cell *c) {
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loc v = get_coord(c);
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return (v.first - v.second + MODFIXER)%3;
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}
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// mapping of the local equilateral triangle
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// goldberg_map[y][x].cw is the cellwalker in this triangle at position (x,y)
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// facing local direction 0
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goldberg_mapping_t goldberg_map[32][32];
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void clear_mapping() {
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for(int y=0; y<32; y++) for(int x=0; x<32; x++) {
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goldberg_map[y][x].cw.c = NULL;
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goldberg_map[y][x].rdir = -1;
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}
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}
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goldberg_mapping_t& get_mapping(loc c) {
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return goldberg_map[c.second&31][c.first&31];
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}
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const char *disp(loc at) {
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static char bufs[16][16];
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static int bufid;
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bufid++; bufid %= 16;
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snprintf(bufs[bufid], 16, "[%d,%d]", at.first, at.second);
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return bufs[bufid];
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}
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const char *dcw(cellwalker cw) {
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static char bufs[16][32];
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static int bufid;
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bufid++; bufid %= 16;
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snprintf(bufs[bufid], 32, "[%p/%d:%d:%d]", cw.c, cw.c?cw.c->type:-1, cw.spin, cw.mirrored);
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return bufs[bufid];
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}
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int spawn;
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#define WHD(x) // x
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void conn1(loc at, int dir, int dir1) {
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auto& wc = get_mapping(at);
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auto& wc1 = get_mapping(at + eudir(dir));
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int cdir = (wc.cw + dir).spin;
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WHD( printf(" connection %s/%d %s ", disp(at), dir, dcw(wc.cw+dir)); )
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if(!wc1.cw.c) {
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wc1.cw.c = wc.cw.c->mov[cdir];
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if(wc1.cw.c) {
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// wc1.c/wc.c->spin(cdir) == dir1
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wc1.cw = (wc.cw + dir + wstep - dir1);
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WHD( printf("(pulled) "); )
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}
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if(!wc1.cw.c) {
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wc1.cw.c = newCell(6, wc.cw.c->master);
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spawn++;
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// 0 for wc1.c should be dir1
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wc1.cw.mirrored = wc.cw.mirrored;
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wc1.cw.spin = fix6(wc.cw.mirrored ? dir1 : -dir1);
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WHD( printf("(created) "); )
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}
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}
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int cdir1 = (wc1.cw + dir1).spin;
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WHD( printf("%s ", dcw(wc1.cw+dir1)); )
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if(wc.cw.c->mov[cdir] && wc.cw.c->mov[cdir] != wc1.cw.c) {
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WHD( printf("FAIL: %p\n", wc.cw.c->mov[cdir]); exit(1); )
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}
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if(wc.cw.c->mov[cdir]) {
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if(wc.cw.c->spin(cdir) != cdir1) {
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printf("warning: wrong spin: %d vs %d\n", wc.cw.c->spin(cdir), cdir1);
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exit(1);
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}
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}
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WHD(printf("ok\n"); )
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wc.cw.c->mov[cdir] = wc1.cw.c;
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tsetspin(wc.cw.c->spintable, cdir, cdir1 + (wc.cw.mirrored != wc1.cw.mirrored ? 8 : 0));
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}
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void conn(loc at, int dir) {
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conn1(at, fix6(dir), fix6(dir+3));
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conn1(at + eudir(dir), fix6(dir+3), fix6(dir));
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}
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void extend_map(cell *c, int d) {
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WHD( printf("EXTEND %p %d\n", c, d); )
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if(c->master->c7 != c) {
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while(c->master->c7 != c) {
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WHD( printf("%p direction 0 corresponds to %p direction %d\n", c, c->mov[0], c->spin(0)); )
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d = c->spin(0);
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c = c->mov[0];
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}
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// c move 0 equals c' move spin(0)
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extend_map(c, d);
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extend_map(c, fixdir(d-1, c));
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extend_map(c, fixdir(d+1, c));
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return;
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}
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clear_mapping();
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// we generate a local map from an Euclidean grid to the
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// hyperbolic grid we build.
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// we fill the equilateral triangle with the following vertices:
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loc vc[3];
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vc[0] = loc(0,0);
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vc[1] = param;
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vc[2] = param * loc(0,1);
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// get_mapping(loc) gives our local map. We set the vertices first
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{
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auto h = c->master;
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auto& ac0 = get_mapping(vc[0]);
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ac0.cw = cellwalker(h->c7, d);
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WHD( printf("%s : %s\n", disp(vc[0]), dcw(ac0.cw)); )
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// 3 ~ h->spin(d)
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auto& ac1 = get_mapping(vc[1]);
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cell *c0 = createStep(h, d)->c7;
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ac1.cw = cellwalker(c0, h->spin(d) - (h->mirror(d) ? -3 : 3), h->mirror(d));
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WHD( printf("%s : %s\n", disp(vc[1]), dcw(ac1.cw)); )
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auto& ac2 = get_mapping(vc[2]);
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int d1 = (d+1)%S7;
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cell *c1 = createStep(h, d1)->c7;
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ac2.cw = cellwalker(c1, h->spin(d1) - (h->mirror(d1) ? -4 : 4), h->mirror(d1));
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WHD( printf("%s : %s\n", disp(vc[2]), dcw(ac2.cw)); )
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// 4 ~ h->spin(d1)
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}
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// then we set the edges of our big equilateral triangle (in a symmetric way)
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for(int i=0; i<3; i++) {
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loc start = vc[i];
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loc end = vc[(i+1)%3];
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WHD( printf("from %s to %s\n", disp(start), disp(end)); )
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loc rel = param;
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auto build = [&] (loc& at, int dx, bool forward) {
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int dx1 = dx + 2*i;
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WHD( printf("%s %d .. %s %d\n", disp(at), dx1, disp(at + eudir(dx1)), fix6(dx1+3)); )
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conn(at, dx1);
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if(forward) get_mapping(at).rdir = fix6(dx1);
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else get_mapping(at+eudir(dx1)).rdir = fix6(dx1+3);
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at = at + eudir(dx1);
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};
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while(rel.first >= 2) {
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build(start, 0, true);
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build(end, 3, false);
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rel.first -= 2;
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}
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while(rel.second >= 2) {
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build(start, 1, true);
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build(end, 4, false);
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rel.second -= 2;
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}
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while(rel.first>0 && rel.second) {
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build(start, 0, true);
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build(end, 3, false);
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rel.first -= 2;
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}
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for(int k=0; k<6; k++)
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if(start + eudir(k+2*i) == end)
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build(start, k, true);
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if(start != end) { printf("assertion failed: start %s == end %s\n", disp(start), disp(end)); exit(1); }
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}
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// now we can fill the interior of our big equilateral triangle
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loc at = vc[0];
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while(true) {
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auto& wc = get_mapping(at);
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int dx = wc.rdir;
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auto at1 = at + eudir(dx);
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auto& wc1 = get_mapping(at1);
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WHD( printf("%s (%d) %s (%d)\n", disp(at), dx, disp(at1), wc1.rdir); )
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int df = wc1.rdir - dx;
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if(df < 0) df += 6;
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if(df == 3) break;
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switch(df) {
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case 0:
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case 4:
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case 5:
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at = at1;
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continue;
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case 2: {
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conn(at, dx+1);
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wc.rdir = (dx+1) % 6;
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break;
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}
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case 1: {
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auto at2 = at + eudir(dx+1);
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auto& wc2 = get_mapping(at2);
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if(wc2.cw.c) { at = at1; continue; }
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wc.rdir = (dx+1) % 6;
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conn(at, (dx+1) % 6);
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conn(at1, (dx+2) % 6);
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conn(at2, (dx+0) % 6);
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wc1.rdir = -1;
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wc2.rdir = dx;
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break;
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}
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default:
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printf("case unhandled %d\n", df);
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exit(1);
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}
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}
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WHD( printf("DONE\n\n"); )
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}
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hyperpoint loctoh_ort(loc at) {
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return hpxyz(at.first, at.second, 1);
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}
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hyperpoint corner_coords[7] = {
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hpxyz(2, -1, 0),
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hpxyz(1, 1, 0),
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hpxyz(-1, 2, 0),
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hpxyz(-2, 1, 0),
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hpxyz(-1, -1, 0),
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hpxyz(1, -2, 0),
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hpxyz(0, 0, 0) // center, not a corner
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};
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hyperpoint atz(const transmatrix& T, const transmatrix& corners, loc at, int cornerid = 6, ld cf = 3) {
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int sp = 0;
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again:
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auto corner = corners * hyperpoint_vec::operator+ (loctoh_ort(at), hyperpoint_vec::operator/ (corner_coords[cornerid], cf));
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if(corner[1] < -1e-6 || corner[2] < -1e-6) {
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at = at * eudir(1);
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if(cornerid < 6) cornerid = (1 + cornerid) % 6;
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sp++;
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goto again;
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}
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if(sp>3) sp -= 6;
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return normalize(spin(2*M_PI*sp/S7) * T * corner);
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}
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transmatrix Tf[8][32][32][6];
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transmatrix corners;
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transmatrix dir_matrix(int i) {
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cell cc; cc.type = S7;
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return spin(-alpha) * build_matrix(
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C0,
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ddspin(&cc, i) * xpush(tessf) * C0,
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ddspin(&cc, i+1) * xpush(tessf) * C0
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);
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}
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void prepare_matrices() {
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corners = inverse(build_matrix(
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loctoh_ort(loc(0,0)),
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loctoh_ort(param),
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loctoh_ort(param * loc(0,1))
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));
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for(int i=0; i<S7; i++) {
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transmatrix T = dir_matrix(i);
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for(int x=-10; x<10; x++)
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for(int y=-10; y<10; y++)
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for(int d=0; d<6; d++) {
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loc at = loc(x, y);
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hyperpoint h = atz(T, corners, at, 6);
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hyperpoint hl = atz(T, corners, at + eudir(d), 6);
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Tf[i][x&31][y&31][d] = rgpushxto0(h) * rspintox(gpushxto0(h) * hl) * spin(M_PI);
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}
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}
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}
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hyperpoint get_corner_position(cell *c, int cid, ld cf = 3) {
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auto li = get_local_info(c);
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int i = li.last_dir;
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if(i == -1)
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return atz(dir_matrix(cid), corners, li.relative, 0, cf);
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else {
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auto& cellmatrix = Tf[i][li.relative.first&31][li.relative.second&31][fix6(li.total_dir)];
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return inverse(cellmatrix) * atz(dir_matrix(i), corners, li.relative, fix6(cid + li.total_dir), cf);
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}
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}
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map<pair<int, int>, loc> center_locs;
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void compute_geometry() {
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center_locs.clear();
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if(on) {
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int x = param.first;
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int y = param.second;
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area = ((2*x+y) * (2*x+y) + y*y*3) / 4;
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next = hpxyz(x+y/2., -y * sqrt(3) / 2, 0);
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scale = 1 / hypot2(next);
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crossf *= scale;
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hepvdist *= scale;
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rhexf *= scale;
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// spin = spintox(next);
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// ispin = rspintox(next);
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alpha = -atan2(next[1], next[0]);
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base_distlimit = (base_distlimit + log(scale) / log(2.618)) / scale;
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if(base_distlimit > 30)
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base_distlimit = 30;
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prepare_matrices();
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}
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else {
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scale = 1;
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alpha = 0;
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}
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}
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string operation_name() {
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if(!gp::on) {
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if(nonbitrunc) return XLAT("OFF");
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else return XLAT("bitruncated");
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}
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else if(param == loc(1, 0))
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return XLAT("OFF");
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else if(param == loc(1, 1))
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return XLAT("bitruncated");
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else if(param == loc(2, 0))
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return XLAT("chamfered");
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else if(param == loc(3, 0))
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return XLAT("2x bitruncated");
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else
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return "GP(" + its(param.first) + "," + its(param.second) + ")";
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}
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int config_x, config_y;
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void whirl_set(int x, int y, bool texture_remap) {
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auto old_tstate = texture::config.tstate;
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auto old_tstate_max = texture::config.tstate_max;
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if(y < 0) { y = -y; x -= y; }
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if(x < 0) { x = -x; y = -y; }
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if(x < y) swap(x, y);
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if(x > 8) x = 8;
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if(y > 8) y = 8;
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if(y && elliptic) {
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if(x==y)
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addMessage("GP(x,x) not implemented yet for elliptic geometry");
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else
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addMessage("This does not work in elliptic geometry");
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y = 0;
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}
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config_x = x; config_y = y;
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param = loc(x, y);
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auto g = screens;
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if(x == 1 && y == 0) {
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if(gp::on) restartGame(rg::bitrunc);
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if(!nonbitrunc) restartGame(rg::bitrunc);
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}
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else if(x == 1 && y == 1) {
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if(gp::on) restartGame(rg::bitrunc);
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if(nonbitrunc) restartGame(rg::bitrunc);
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}
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else {
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if(nonbitrunc) restartGame(rg::bitrunc);
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param = loc(x, y);
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restartGame(rg::gp);
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}
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if(texture_remap)
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texture::config.remap(old_tstate, old_tstate_max);
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screens = g;
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}
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string helptext() {
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return
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"Goldberg polyhedra are obtained by adding extra hexagons to a dodecahedron. "
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"GP(x,y) means that, to get to a nearest non-hex from any non-hex, you should move x "
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"cells in any direction, turn right 60 degrees, and move y cells. "
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"HyperRogue generalizes this to any tesselation with 3 faces per vertex. "
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"By default HyperRogue uses bitruncation, which corresponds to GP(1,1).";
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}
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void show(bool texture_remap) {
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cmode = sm::SIDE;
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gamescreen(0);
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dialog::init(XLAT("Goldberg"));
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bool show_nonthree = !(texture_remap && (S7&1));
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if(show_nonthree) {
|
|
dialog::addBoolItem(XLAT("OFF"), param == loc(1,0), 'a');
|
|
dialog::lastItem().value = "GP(1,0)";
|
|
}
|
|
|
|
dialog::addBoolItem(XLAT("bitruncated"), param == loc(1,1), 'b');
|
|
dialog::lastItem().value = "GP(1,1)";
|
|
|
|
if(show_nonthree) {
|
|
dialog::addBoolItem(XLAT("chamfered"), param == loc(2,0), 'c');
|
|
dialog::lastItem().value = "GP(2,0)";
|
|
}
|
|
|
|
dialog::addBoolItem(XLAT("2x bitruncated"), param == loc(3,0), 'd');
|
|
dialog::lastItem().value = "GP(3,0)";
|
|
|
|
dialog::addBreak(100);
|
|
dialog::addSelItem("x", its(config_x), 'x');
|
|
dialog::addSelItem("y", its(config_y), 'y');
|
|
|
|
if((config_x-config_y)%3 && !show_nonthree)
|
|
dialog::addInfo("This pattern needs x-y divisible by 3");
|
|
else
|
|
dialog::addBoolItem(XLAT("select"), param == loc(config_x, config_y), 'f');
|
|
|
|
dialog::addBreak(100);
|
|
dialog::addItem(XLAT("help"), SDLK_F1);
|
|
dialog::addItem(XLAT("back"), '0');
|
|
dialog::display();
|
|
|
|
keyhandler = [show_nonthree, texture_remap] (int sym, int uni) {
|
|
dialog::handleNavigation(sym, uni);
|
|
if(uni == 'a' && show_nonthree)
|
|
whirl_set(1, 0, texture_remap);
|
|
else if(uni == 'b')
|
|
whirl_set(1, 1, texture_remap);
|
|
else if(uni == 'c' && show_nonthree)
|
|
whirl_set(2, 0, texture_remap);
|
|
else if(uni == 'd')
|
|
whirl_set(3, 0, texture_remap);
|
|
else if(uni == 'f' && (show_nonthree || (config_x-config_y)%3 == 0))
|
|
whirl_set(config_x, config_y, texture_remap);
|
|
else if(uni == 'x')
|
|
dialog::editNumber(config_x, 1, 10, 1, 1, "x", helptext());
|
|
else if(uni == 'y')
|
|
dialog::editNumber(config_y, 1, 10, 1, 1, "y", helptext());
|
|
else if(uni == '?' || sym == SDLK_F1 || uni == 'h' || uni == '2')
|
|
gotoHelp(helptext());
|
|
else if(doexiton(sym, uni))
|
|
popScreen();
|
|
};
|
|
}
|
|
|
|
loc univ_param() {
|
|
if(on) return param;
|
|
else if(nonbitrunc) return loc(1,0);
|
|
else return loc(1,1);
|
|
}
|
|
|
|
void configure(bool texture_remap = false) {
|
|
auto l = univ_param();
|
|
config_x = l.first, config_y = l.second;
|
|
param = loc(config_x, config_y);
|
|
pushScreen([texture_remap] () { gp::show(texture_remap); });
|
|
}
|
|
|
|
void be_in_triangle(local_info& li) {
|
|
int sp = 0;
|
|
auto& at = li.relative;
|
|
again:
|
|
auto corner = corners * loctoh_ort(at);
|
|
if(corner[1] < -1e-6 || corner[2] < -1e-6) {
|
|
at = at * eudir(1);
|
|
sp++;
|
|
goto again;
|
|
}
|
|
if(sp>3) sp -= 6;
|
|
li.last_dir = fix7(li.last_dir - sp);
|
|
}
|
|
|
|
int length(loc p) {
|
|
return eudist(p.first, p.second);
|
|
}
|
|
|
|
// from some point X, (0,0) is in distance dmain, param is in distance d0, and param*z is in distance d1
|
|
// what is the distance of at from X?
|
|
|
|
int solve_triangle(int dmain, int d0, int d1, loc at) {
|
|
loc centerloc(0, 0);
|
|
auto rel = make_pair(d0-dmain, d1-dmain);
|
|
if(center_locs.count(rel))
|
|
centerloc = center_locs[rel];
|
|
else {
|
|
bool found = false;
|
|
for(int y=-20; y<=20; y++)
|
|
for(int x=-20; x<=20; x++) {
|
|
loc c(x, y);
|
|
int cc = length(c);
|
|
int c0 = length(c - param);
|
|
int c1 = length(c - param*loc(0,1));
|
|
if(c0-cc == d0-dmain && c1-cc == d1-dmain)
|
|
found = true, centerloc = c;
|
|
}
|
|
if(!found)
|
|
printf("Warning: centerloc not found: %d,%d,%d\n", dmain, d0, d1);
|
|
center_locs[rel] = centerloc;
|
|
}
|
|
|
|
return dmain + length(centerloc-at) - length(centerloc);
|
|
}
|
|
|
|
array<cell*, 3> get_masters(cell *c) {
|
|
if(gp::on) {
|
|
auto li = get_local_info(c);
|
|
be_in_triangle(li);
|
|
auto cm = c->master;
|
|
int i = li.last_dir;
|
|
return make_array(cm->c7, createStep(cm, i)->c7, createStep(cm, fix7(i+1))->c7);
|
|
}
|
|
else
|
|
return make_array(c->mov[0], c->mov[2], c->mov[4]);
|
|
}
|
|
|
|
int compute_dist(cell *c, int master_function(cell*)) {
|
|
auto li = get_local_info(c);
|
|
be_in_triangle(li);
|
|
|
|
cell *cm = c->master->c7;
|
|
|
|
int i = li.last_dir;
|
|
auto at = li.relative;
|
|
|
|
auto dmain = master_function(cm);
|
|
auto d0 = master_function(createStep(cm->master, i)->c7);
|
|
auto d1 = master_function(createStep(cm->master, fixdir(i+1, cm))->c7);
|
|
|
|
return solve_triangle(dmain, d0, d1, at);
|
|
}
|
|
|
|
int dist_2() {
|
|
return length(univ_param());
|
|
}
|
|
|
|
int dist_3() {
|
|
return length(univ_param() * loc(1,1));
|
|
}
|
|
|
|
int dist_1() {
|
|
return dist_3() - dist_2();
|
|
}
|
|
|
|
}
|
|
|