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added the missing file
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Zeno Rogue
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blizzard.cpp
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250
blizzard.cpp
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double randd() { return (rand() % 1000000) / 1000000. + .0000005; }
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hyperpoint randomPointIn(int t) {
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while(true) {
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hyperpoint h = spin(2*M_PI*(randd()-.5)/t) * tC0(xpush(asinh(randd())));
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double d =
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purehepta ? tessf : t == 6 ? hexhexdist : crossf;
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if(hdist0(h) < hdist0(xpush(-d) * h))
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return spin(2*M_PI/t * (rand() % t)) * h;
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}
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}
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struct snowball {
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transmatrix T;
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transmatrix global;
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snowball *prev;
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snowball *next;
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double phase;
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snowball(int t) { T = rgpushxto0(randomPointIn(t)); phase = randd(); }
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};
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struct blizzardcell {
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cell *c;
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int frame;
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int tmp;
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transmatrix *gm;
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char wmap;
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int inward, outward, ward;
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int qty[7];
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vector<snowball*> inorder, outorder;
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int inid, outid;
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~blizzardcell() { for(auto i: inorder) delete i; }
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};
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map<cell*, blizzardcell> blizzardcells;
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vector<blizzardcell*> bcells;
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int N;
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blizzardcell* getbcell(cell *c) {
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int i = c->aitmp;
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if(i<0 || i >= N) return NULL;
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if(bcells[i]->c != c) return NULL;
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return bcells[i];
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}
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void drawBlizzards() {
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auto it = blizzardcells.begin();
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bcells.clear();
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while(it != blizzardcells.end())
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if(it->second.frame != frameid || !gmatrix.count(it->first))
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it = blizzardcells.erase(it);
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else {
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it->second.c = it->first;
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bcells.push_back(&it->second);
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it++;
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}
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N = size(bcells);
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for(int i=0; i<N; i++) {
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auto& bc = *bcells[i];
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bc.tmp = bc.c->aitmp,
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bc.c->aitmp = i;
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bc.gm = &gmatrix[bc.c];
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bc.wmap = windmap::at(bc.c);
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}
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for(int i=0; i<N; i++) {
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auto& bc = *bcells[i];
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cell *c = bc.c;
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bc.inward = bc.outward = 0;
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for(int i=0; i<c->type; i++) {
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int& qty = bc.qty[i];
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qty = 0;
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cell *c2 = c->mov[i];
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if(!c2) continue;
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auto bc2 = getbcell(c2);
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if(!bc2) continue;
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int z = (bc2->wmap - bc.wmap) & 255;
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if(z >= windmap::NOWINDBELOW && z < windmap::NOWINDFROM)
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bc.outward += qty = z / 8;
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z = (-z) & 255;
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if(z >= windmap::NOWINDBELOW && z < windmap::NOWINDFROM)
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bc.inward += z / 8, qty = -z/8;
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}
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bc.ward = max(bc.inward, bc.outward);
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while(size(bc.inorder) < bc.ward) {
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auto sb = new snowball(c->type);
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bc.inorder.push_back(sb);
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bc.outorder.push_back(sb);
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}
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for(auto& sb: bc.inorder) sb->prev = sb->next = NULL;
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bc.inid = 0;
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}
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double at = (ticks % 250) / 250.0;
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for(int i=0; i<N; i++) {
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auto& bc = *bcells[i];
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cell *c = bc.c;
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for(auto sb: bc.inorder)
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sb->global = (*bc.gm) * sb->T;
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bc.outid = 0;
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for(int d=0; d<c->type; d++) for(int k=0; k<bc.qty[d]; k++) {
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auto& bc2 = *getbcell(c->mov[d]);
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auto& sball = *bc.outorder[bc.outid++];
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auto& sball2 = *bc2.inorder[bc2.inid++];
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sball.next = &sball2;
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sball2.prev = &sball;
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hyperpoint t = inverse(sball.global) * tC0(sball2.global);
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double at0 = at + sball.phase;
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if(at0>1) at0 -= 1;
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transmatrix tpartial = sball.global * rspintox(t) * xpush(hdist0(t) * at0);
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queuepoly(tpartial, shSnowball, 0xFFFFFF80);
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}
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}
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for(int ii=0; ii<N; ii++) {
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auto& bc = *bcells[ii];
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int B = size(bc.outorder);
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if(B<2) continue;
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int i = rand() % B;
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int j = rand() % (B-1);
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if(i==j) j++;
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if(1) {
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auto& sb1 = *bc.outorder[i];
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auto& sb2 = *bc.outorder[j];
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double swapcost = 0;
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if(sb1.next) swapcost -= hdist(tC0(sb1.global), tC0(sb1.next->global));
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if(sb2.next) swapcost -= hdist(tC0(sb2.global), tC0(sb2.next->global));
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if(sb1.next) swapcost += hdist(tC0(sb2.global), tC0(sb1.next->global));
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if(sb2.next) swapcost += hdist(tC0(sb1.global), tC0(sb2.next->global));
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if(swapcost < 0) {
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swap(bc.outorder[i], bc.outorder[j]);
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swap(sb1.next, sb2.next);
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if(sb1.next) sb1.next->prev = &sb1;
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if(sb2.next) sb2.next->prev = &sb2;
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}
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}
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if(1) {
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auto& sb1 = *bc.inorder[i];
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auto& sb2 = *bc.inorder[j];
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double swapcost = 0;
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if(sb1.prev) swapcost -= hdist(tC0(sb1.global), tC0(sb1.prev->global));
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if(sb2.prev) swapcost -= hdist(tC0(sb2.global), tC0(sb2.prev->global));
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if(sb1.prev) swapcost += hdist(tC0(sb2.global), tC0(sb1.prev->global));
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if(sb2.prev) swapcost += hdist(tC0(sb1.global), tC0(sb2.prev->global));
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if(swapcost < 0) {
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swap(bc.inorder[i], bc.inorder[j]);
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swap(sb1.prev, sb2.prev);
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if(sb1.prev) sb1.prev->next = &sb1;
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if(sb2.prev) sb2.prev->next = &sb2;
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}
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}
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auto& sbp = *bc.inorder[i];
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if(sbp.next && sbp.prev) {
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double p1 = sbp.next->phase;
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double p2 = sbp.prev->phase;
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double d = p2-p1;
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if(d<=.5) d+=1;
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if(d>=.5) d-=1;
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sbp.phase = p1 + d/2;
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if(sbp.phase >= 1) sbp.phase -= 1;
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if(sbp.phase < 0) sbp.phase += 1;
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}
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}
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for(auto bc: bcells)
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bc->c->aitmp = bc->tmp;
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}
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#if 0
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{
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int v0 = windmap::at(c);
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const bool method2 = true;
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auto a = [] (cell *c) {
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ld dx=0, dy=0;
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int v0 = windmap::at(c);
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forCellIdEx(c2, i, c) {
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int v1 = windmap::at(c->mov[i]);
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if(!c2) continue;
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int xv1 = (v1 - v0) & 255;
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if(xv1 >= 128) xv1 -= 256;
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int hdir = displaydir(c, i);
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dx += sin(hdir * M_PI / 42) * xv1;
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dy += cos(hdir * M_PI / 42) * xv1;
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}
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return atan2(dx, dy);
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};
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ld alpha = a(c);
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double xx = M_PI / (1 + sqrt(5));
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forCellIdEx(c2, i, c) {
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int v1 = windmap::at(c2);
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int xv1 = (v1 - v0) & 255;
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if(xv1 >= windmap::NOWINDBELOW && xv1 < windmap::NOWINDFROM) {
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// method2 ? (ticks/16) - v0 : ticks/4;
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double xcph = (ticks/16.) - v0;
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xcph -= floor(xcph / 256) * 256;
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ld beta = a(c2);
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for(int u=0; u<(method2 ? 16 : 1); u++) {
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xcph += 16; if(xcph >= 256) xcph -= 256;
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if(method2 ? xcph < xv1 : true) {
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int hdir = displaydir(c, i);
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int aircol = 0xFFFFFF00; // 0xD0D0FFFF;
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aircol += int(255. * windmap::NOWINDBELOW / xv1); // (1-exp(-xv1 / 50.)));
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double at = method2 ? xcph*1./xv1 : xcph / 256.;
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double ldist =
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purehepta ? tessf :
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c->type == 6 && c2->type == 6 ? hexhexdist :
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crossf;
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/* transmatrix alphamatrix = (*Vdp) * spin(M_PI/2) * xpush(sin(u*xx) * ldist/4) * spin(-M_PI/2) * spin(alpha) * xpush(ldist*at);
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transmatrix betamatrix = (*Vdp) * spin(hdir*M_PI/42) * xpush(ldist) *
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spin(-displaydir(c2, c->spn(i))*M_PI/S42) *
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spin(M_PI/2) * xpush(-sin(u*xx)*ldist/4) * spin(-M_PI/2) *
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spin(beta) * xpush(ldist * (1-at));
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hyperpoint t = inverse(alphamatrix) * tC0(betamatrix);
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transmatrix tpartial = alphamatrix * rspintox(t) * xpush(hdist0(t) * at * at * (3-2*at)); */
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poly_outline = OUTLINE_TRANS;
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transmatrix V0 = spin((hdir) * M_PI / S42);
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// queuepoly(tpartial, shSnowball, aircol);
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queuepoly((*Vdp) * V0 * xpush(at*ldist), shSnowball, aircol);
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poly_outline = OUTLINE_DEFAULT;
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}
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}
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}
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}
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}
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#endif
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