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https://github.com/zenorogue/hyperrogue.git
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278 lines
8.4 KiB
C++
278 lines
8.4 KiB
C++
// Hyperbolic Rogue
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// Copyright (C) 2011-2018 Zeno Rogue, see 'hyper.cpp' for details
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// heptagon here refers to underlying heptagonal tesselation
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// (which you can see by changing the conditions in graph.cpp)
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#define MIRR(x) x.mirrored
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int heptacount = 0;
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struct cell;
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cell *newCell(int type, heptagon *master);
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// spintable functions
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// the automaton is used to generate each heptagon in an unique way
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// (you can see the tree obtained by changing the conditions in graph.cpp)
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// from the origin we can go further in any direction, and from other heptagons
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// we can go in directions 3 and 4 (0 is back to origin, so 3 and 4 go forward),
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// and sometimes in direction 5
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hstate transition(hstate s, int dir) {
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if(sphere) {
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if(S7 == 4) {
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if(s == hsOrigin) return dir == 0 ? hsB0 : hsB1;
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}
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if(S7 == 3) {
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if(s == hsOrigin) return hsB1;
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}
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if(s == hsOrigin) return dir == 0 ? hsA0 : hsA1;
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if(s == hsA0 && dir == 2) return hsB0;
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if(s == hsA1 && dir == 2) return hsB1;
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if(s == hsB0 && dir == S7-2) return hsC;
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return hsError;
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}
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else if(S6 == 8) {
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if(s == hsOrigin) return hsA;
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if(s == hsA && (dir >= 2 && dir < S7-1)) return hsA;
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if(s == hsA && (dir == S7-1)) return hsB;
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if(s == hsB && (dir >= 2 && dir < S7-2)) return hsA;
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if(s == hsB && (dir == S7-2)) return hsB;
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}
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else {
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if(s == hsOrigin) return hsA;
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if(s == hsA && dir >= 3 && dir <= S7-3) return hsA;
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if(s == hsA && dir == S7-2) return hsB;
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if(s == hsB && dir >= 3 && dir <= S7-4) return hsA;
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if(s == hsB && dir == S7-3) return hsB;
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}
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return hsError;
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}
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/*
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int indent = 0;
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struct indenter {
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indenter() { indent += 2; }
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~indenter() { indent -= 2; }
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};
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template<class... T> auto iprintf(T... t) { for(int i=0; i<indent; i++) putchar(' '); return printf(t...); }
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*/
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#define COMPUTE -1000000
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// create a new heptagon
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heptagon *buildHeptagon(heptagon *parent, int d, hstate s, int pard = 0, int fixdistance = COMPUTE) {
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heptagon *h = new heptagon;
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h->alt = NULL;
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h->s = s;
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for(int i=0; i<MAX_EDGE; i++) h->move[i] = NULL;
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h->spintable = 0;
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h->move[pard] = parent; tsetspin(h->spintable, pard, d);
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parent->move[d] = h; tsetspin(parent->spintable, d, pard);
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if(parent->c7) {
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h->c7 = newCell(S7, h);
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h->rval0 = h->rval1 = 0; h->cdata = NULL;
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h->emeraldval = emerald_heptagon(parent->emeraldval, d);
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h->zebraval = zebra_heptagon(parent->zebraval, d);
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h->fieldval = currfp.connections[fieldpattern::btspin(parent->fieldval, d)];
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if(a38)
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h->fiftyval = fifty_38(parent->fiftyval, d);
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else if(parent->s == hsOrigin)
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h->fiftyval = firstfiftyval(d);
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else
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h->fiftyval = nextfiftyval(parent->fiftyval, parent->move[0]->fiftyval, d);
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}
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else {
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h->c7 = NULL;
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h->emeraldval = 0;
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h->fiftyval = 0;
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h->cdata = NULL;
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}
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//generateEmeraldval(parent);
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//generateEmeraldval(h);
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if(pard == 0) {
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h->dm4 = parent->dm4+1;
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if(fixdistance != COMPUTE) h->distance = fixdistance;
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else if(S3 == 4 && !nonbitrunc) {
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h->distance = parent->distance + 2;
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if(h->spin(0) == 2 || (h->spin(0) == 3 && S7 <= 5))
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h->distance = min<short>(h->distance, createStep(h->move[0], 0)->distance + 3);
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if(h->spin(0) == 2 && h->move[0]) {
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int d = h->spin(0);
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int d1 = (d+S7-1)%S7;
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heptagon* h1 = createStep(h->move[0], d1);
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if(h1->distance <= h->move[0]->distance)
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h->distance = h->move[0]->distance+1;
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}
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if((h->s == hsB && h->move[0]->s == hsB) || h->move[0]->s == hsA) {
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int d = h->spin(0);
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heptagon* h1 = createStep(h->move[0], (d+1)%S7);
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if(h1->distance <= h->move[0]->distance)
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h->distance = h->move[0]->distance+1;
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}
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if(h->spin(0) == S7-1 && h->move[0]->distance != 0)
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h->distance = min(
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h->move[0]->move[0]->distance + 2,
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createStep(h, S7-1)->distance + 1
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);
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}
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else if(parent->s == hsOrigin) h->distance = parent->distance + gp::dist_2();
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else if(h->spin(0) == S7-2) {
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if(!gp::on)
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h->distance = parent->distance + gp::dist_1();
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else {
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int d0 = parent->distance;
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int d1 = createStep(parent, S7-1)->distance;
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int dm = createStep(parent, 0)->distance;
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h->distance = gp::solve_triangle(dm, d0, d1, gp::operator* (gp::param, gp::loc(1,1)));
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}
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}
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else if(h->spin(0) == S7-3 && h->move[0]->s == hsB) {
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if(!gp::on) {
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h->distance = createStep(h->move[0], (h->spin(0)+2)%S7)->distance + gp::dist_3();
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}
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else {
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int d0 = parent->distance;
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int d1 = createStep(parent, S7-2)->distance;
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int dm = createStep(parent, S7-1)->distance;
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h->distance = gp::solve_triangle(dm, d0, d1, gp::operator* (gp::param, gp::loc(1,1)));
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}
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}
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else h->distance = parent->distance + gp::dist_2();
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}
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else {
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h->distance = parent->distance - gp::dist_2();
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if(S3 == 4 && S7 == 5) {
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if(h->s == hsOrigin) {
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printf("had to cheat!\n");
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h->distance = parent->distance - 2;
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}
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else {
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h->distance = parent->distance - 1;
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buildHeptagon(h, 2, hsA, 0, h->distance + 2);
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buildHeptagon(h, 4, hsB, 0, h->distance);
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}
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}
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h->dm4 = parent->dm4-1;
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}
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return h;
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}
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void connectHeptagons(heptagon *h1, int d1, heptagon *h2, int d2) {
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h1->move[d1] = h2;
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h1->setspin(d1, d2);
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h2->move[d2] = h1;
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h2->setspin(d2, d1);
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}
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int recsteps;
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void addSpin(heptagon *h, int d, heptagon *from, int rot, int spin) {
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rot = fixrot(rot);
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createStep(from, rot);
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int fr = fixrot(from->spin(rot) + spin);
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connectHeptagons(h, d, from->move[rot], fr);
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/* h->move[d] = from->move[rot];
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h->setspin(d, fr);
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h->move[d]->move[fr] = h;
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h->move[d]->setspin(fr, d); */
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//generateEmeraldval(h->move[d]); generateEmeraldval(h);
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}
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extern int hrand(int);
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// a structure used to walk on the heptagonal tesselation
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// (remembers not only the heptagon, but also direction)
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heptspin& operator += (heptspin& hs, int spin) {
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hs.spin = fixrot(hs.spin + (MIRR(hs)?-spin:spin));
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return hs;
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}
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heptspin operator + (const heptspin& hs, wstep_t) {
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createStep(hs.h, hs.spin);
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heptspin res;
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res.h = hs.h->move[hs.spin];
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res.mirrored = hs.mirrored ^ hs.h->mirror(hs.spin);
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res.spin = hs.h->spin(hs.spin);
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return res;
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}
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heptspin operator + (heptspin h, int spin) { return h += spin; }
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heptspin operator - (heptspin h, int spin) { return h += -spin; }
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heptspin& operator += (heptspin& h, wstep_t) { h = h + wstep; return h; }
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heptagon *createStep(heptagon *h, int d) {
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d = fixrot(d);
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if(!h->move[0] && h->s != hsOrigin) {
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// cheating:
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int pard=0;
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if(S3 == 3)
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pard = 3 + hrand(2);
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else if(S3 == 4 && S7 == 5)
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pard = 3; // to do: randomize
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else if(S3 == 4)
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pard = 3;
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buildHeptagon(h, 0, h->distance < -10000 ? hsOrigin : hsA, pard);
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}
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if(h->move[d]) return h->move[d];
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if(h->s == hsOrigin) {
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buildHeptagon(h, d, hsA);
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}
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else if(S3 == 4) {
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if(d == 1) {
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heptspin hs;
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hs.h = h;
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hs.spin = 0;
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hs.mirrored = false;
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hs = hs + wstep - 1 + wstep - 1 + wstep - 1;
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connectHeptagons(h, d, hs.h, hs.spin);
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}
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else if(h->s == hsB && d == S7-1) {
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heptspin hs;
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hs.h = h;
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hs.spin = 0;
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hs.mirrored = false;
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hs = hs + wstep + 1 + wstep + 1 + wstep + 1;
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connectHeptagons(h, d, hs.h, hs.spin);
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}
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else
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buildHeptagon(h, d, transition(h->s, d));
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}
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else if(d == 1) {
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addSpin(h, d, h->move[0], h->spin(0)-1, -1);
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}
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else if(d == S7-1) {
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addSpin(h, d, h->move[0], h->spin(0)+1, +1);
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}
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else if(d == 2) {
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createStep(h->move[0], h->spin(0)-1);
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addSpin(h, d, h->move[0]->modmove(h->spin(0)-1), S7-2 + h->move[0]->gspin(h->spin(0)-1), -1);
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}
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else if(d == S7-2 && h->s == hsB) {
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createStep(h->move[0], h->spin(0)+1);
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addSpin(h, d, h->move[0]->modmove(h->spin(0)+1), 2 + h->move[0]->gspin(h->spin(0)+1), +1);
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}
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else
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buildHeptagon(h, d, (d == S7-2 || (h->s == hsB && d == S7-3)) ? hsB : hsA);
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return h->move[d];
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}
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// display the coordinates of the heptagon
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void backtrace(heptagon *pos) {
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if(pos->s == hsOrigin) return;
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backtrace(pos->move[0]);
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printf(" %d", pos->spin(0));
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}
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void hsshow(const heptspin& t) {
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printf("ORIGIN"); backtrace(t.h); printf(" (spin %d)\n", t.spin);
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}
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// create h->move[d] if not created yet
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heptagon *createStep(heptagon *h, int d);
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