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hyperrogue/rogueviz/pentaroll.cpp
2021-07-13 22:46:55 +02:00

132 lines
3.3 KiB
C++

#include "rogueviz.h"
// implementation of this demo: https://twitter.com/ZenoRogue/status/1304130700870901761
// compile with: ./mymake rogueviz/pentaroll.cpp
// ./hyper -canvas-random 10 -noplayer -geo 534h -to-fq 72414D0C -pentaroll 1 -sight3 6 -animperiod 30000 -shot-1000
// or -pentaroll 0 if you want to explore yourself
namespace hr {
namespace pentaroll {
void animate();
void create_pentaroll(bool animated) {
start_game();
/* get the list of all close cells */
cell *c0 = currentmap->gamestart();
celllister cl(c0, 4, 1000, nullptr);
/* construct the relative matrices for them */
map<cell*, transmatrix> rel;
rel[c0] = Id;
for(cell *c: cl.lst)
for(int i=0; i<c->type; i++)
if(rel.count(c->move(i)))
rel[c] = rel[c->move(i)] * currentmap->iadj(c, i);
/* the construction */
for(cell *c: cl.lst) {
int common = 0;
for(auto& v: currentmap->get_cellshape(c).vertices_only_local)
for(auto& w: currentmap->get_cellshape(c).vertices_only_local)
if(hdist(v, rel[c] * w) < 1e-6)
common++;
setdist(c, 7, nullptr);
if(c == c0) c->wall = waPalace;
else if(common > 0) c->wall = waNone;
}
c0->wall = waNone;
for(int i=1; i<=cgi.face; i++) {
int i0 = i;
if(cgi.face == 4 && i0 >= 3) i0++;
cellwalker cw(c0, i0);
cw.peek()->wall = waPlatform;
if(cgi.face == 5) {
cellwalker cw1 = currentmap->strafe(cw, (i==1?cgi.face:i-1));
cw1.peek()->wall = waWaxWall;
cw1.peek()->landparam = hrand(0x1000000) | 0x808080;
}
}
if(animated)
rogueviz::rv_hook(anims::hooks_anim, 100, animate);
}
/* currently not configurable */
/* if <1, stay closer to the center */
ld how_far = 1;
ld orig_distance = 1;
ld far_distance = 1;
void animate() {
centerover = currentmap->gamestart();
ld t = ticks * 20. / anims::period;
int tb = int(t) % cgi.face;
hyperpoint m;
for(int i=0; i<cgi.face; i++) m += cgi.heptshape->vertices_only[i];
m /= cgi.face;
auto normm = [&] (hyperpoint h) {
return normalize(lerp(m, h, how_far));
};
hyperpoint h1 = normm(cgi.heptshape->vertices_only[tb]);
hyperpoint h2 = normm(cgi.heptshape->vertices_only[(tb+1) % cgi.face]);
hyperpoint h3 = normm(cgi.heptshape->vertices_only[(tb+2) % cgi.face]);
hyperpoint a = gpushxto0(h2) * h1;
hyperpoint b = gpushxto0(h2) * h3;
b = spintox(a) * b;
a = spintox(a) * a;
b[3] = 0;
println(hlog, "a = ", a);
println(hlog, "b = ", b);
b /= hypot_d(3, b);
ld angle = acos(b[0]);
println(hlog, "b = ", b);
println(hlog, "angle = ", angle / degree, " deg");
ld tf = t - floor(t);
/* make it more smooth */
tf = tf * tf * (3-2*tf);
hyperpoint h = lerp(h1, h2, tf);
h = normalize(h);
set_view(h, h2, h3);
/* set_view does not orient correctly, so we rotate it */
View = cspin(2, 0, M_PI/2) * View;
/* we move the camera backward */
View = zpush(lerp(orig_distance, far_distance, frac(ticks * 1. / anims::period))) * View;
/* we also need to rotate the view to make it smooth */
View = spin((angle-M_PI) * int(t)) * View;
anims::moved();
}
auto hooks = arg::add3("-pentaroll", [] { create_pentaroll(arg::shift_argi()); });
}
}