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hyperrogue/intra.cpp
2021-09-17 13:49:31 +02:00

393 lines
10 KiB
C++

#include "hyper.h"
namespace hr {
EX namespace intra {
EX bool in;
#if HDR
/** information per every space connected with intra-portals */
struct intra_data {
gamedata gd;
geometryinfo gi;
int wallindex;
};
#endif
EX vector<intra_data> data;
/** index of the space we are currently in */
EX int current;
/** map cells to their intra spaces */
EX map<cell*, int> intra_id;
#if HDR
/** information about portal (one side) */
struct portal_data {
int kind;
hyperpoint v0;
ld d;
transmatrix T;
transmatrix iT;
hyperpoint co0;
hyperpoint co1;
ld scale;
/* convert h to portal coordinates ('poco') to usual coordinates */
hyperpoint to_poco(hyperpoint h) const;
/* convert h from portal coordinates ('poco') to usual coordinates */
hyperpoint from_poco(hyperpoint h) const;
};
#endif
hyperpoint portal_data::to_poco(hyperpoint h) const {
if(prod && kind == 1) {
auto dec = product_decompose(h);
h = dec.second;
h[0] /= h[2];
h[1] /= h[2];
h[2] = dec.first - d;
h[3] = 1;
return h;
}
else if(prod && kind == 0) {
h = T * h;
ld z = product_decompose(h).first;
h /= exp(z);
auto h1 = h;
h[0] = asin_auto(h1[1]);
h[1] = z;
h[2] = asin_auto_clamp(h1[0] / cos_auto(h[0]));
h[3] = 1;
return h;
}
else {
h = T * h;
h /= h[3];
return h;
}
}
hyperpoint portal_data::from_poco(hyperpoint h) const {
if(prod && kind == 1) {
ld xd = h[2];
h[2] = 1;
auto z = product_decompose(h).first;
return h * exp(d+xd-z);
}
else if(prod && kind == 0) {
auto h0 = h;
h[0] = sin_auto(h0[2]) * cos_auto(h0[0]);
h[1] = sin_auto(h0[0]);
h[2] = cos_auto(h0[0]) * cos_auto(h0[2]);
h[3] = 1;
return iT * h * exp(h0[1]);
}
else {
h[3] = 1;
return normalize(iT * h);
}
}
EX portal_data make_portal(cellwalker cw, int spin) {
auto& ss = currentmap->get_cellshape(cw.at);
auto& fac = ss.faces[cw.spin];
portal_data id;
id.scale = 1;
if(prod && cw.spin == cw.at->type - 1) {
id.kind = 1;
id.d = product_decompose(fac[0]).first;
id.v0 = C0 * exp(id.d);
}
else if(prod && cw.spin == cw.at->type - 2) {
throw hr_exception("cannot construct a portal in this direction");
}
else if(prod) {
id.kind = 0;
id.v0 = Hypc;
id.scale = cgi.plevel;
for(auto p: fac) id.v0 += p;
id.v0 /= sqrt(abs(intval(id.v0, Hypc)));
id.T = cpush(0, -hdist0(id.v0)) * spintox(id.v0);
for(int i=0; i<3; i++) id.T[3][i] = id.T[i][3] = i==3;
if(debugflags & DF_GEOM)
for(int a=0; a<4; a++) {
hyperpoint h = fac[a];
println(hlog, kz(h), " -> ", kz(spintox(id.v0)*h), " -> ", kz(cpush(0, -hdist0(id.v0))) * kz(spintox(id.v0) * h), " -> ", kz(id.to_poco(h)));
}
}
else {
id.kind = 0;
id.v0 = Hypc;
for(auto p: fac) id.v0 += p;
id.v0 = normalize(id.v0);
id.T = cpush(2, -hdist0(id.v0)) * cspin(2, 0, 90*degree) * spintox(id.v0);
}
id.iT = inverse(id.T);
if(MDIM == 3) for(int i=0; i<4; i++) id.iT[3][i] = id.iT[i][3] = i==3;
int first = spin;
int second = spin + 1;
if(in_s2xe() || sphere) swap(first, second);
first = gmod(first, isize(fac));
second = gmod(second, isize(fac));
id.co0 = id.to_poco(fac[first]);
id.co1 = id.to_poco(fac[second]);
return id;
}
#if HDR
/** information about connection (portal-to-portal) */
struct connection_data {
int source_world;
int target_world;
cellwalker scw, tcw;
portal_data id1;
portal_data id2;
transmatrix T;
int spin_value;
bool mirrored; /* not implemented */
};
#endif
EX map<cellwalker, connection_data> connections;
EX connection_data* find_connection(int a, int b) {
for(auto& p: connections)
if(intra_id[p.first.at] == a && p.second.target_world == b)
return &p.second;
return nullptr;
}
EX void switch_to(int id) {
if(current == id) return;
data[current].gd.storegame();
current = id;
ginf[gProduct] = data[current].gi;
data[current].gd.restoregame();
}
void connect_portal_1(cellwalker cw1, cellwalker cw2, int spin) {
auto& p = connections[cw1];
p.source_world = intra_id[cw1.at];
p.target_world = intra_id[cw2.at];
p.scw = cw1;
p.tcw = cw2;
switch_to(intra_id[cw1.at]);
p.id1 = make_portal(cw1, 0);
switch_to(intra_id[cw2.at]);
p.id2 = make_portal(cw2, spin);
if(1) {
dynamicval<eGeometry> g(geometry, gCubeTiling);
transmatrix T1;
set_column(T1, 0, p.id1.co0);
set_column(T1, 1, p.id1.co1);
set_column(T1, 2, hyperpoint(0,0,p.id1.scale,0));
set_column(T1, 3, C03);
transmatrix T2;
set_column(T2, 0, p.id2.co0);
set_column(T2, 1, p.id2.co1);
set_column(T2, 2, hyperpoint(0,0,-p.id2.scale,0));
set_column(T2, 3, C03);
if(debugflags & DF_GEOM) for(int i=0; i<4; i++)
println(hlog, "mapping ", get_column(T1, i), " to ", get_column(T2, i));
p.T = T2 * inverse(T1);
}
}
EX vector<pair<int, cell*>> full_sample_list;
EX void connect_portal(cellwalker cw1, cellwalker cw2, int spin) {
connect_portal_1(cw1, cw2, spin);
connect_portal_1(cw2, cw1, -spin);
}
/** make currentmap into one of the spaces in intra */
EX void become() {
check_cgi();
cgi.require_shapes();
auto& ac = currentmap->allcells();
current = isize(data);
for(cell *c: ac)
intra_id[c] = current;
for(cell *c: ac)
currentmap->wall_offset(c);
for(cell *c: ac) c->item = itNone;
data.emplace_back();
data.back().gd.storegame();
data.back().gi = ginf[gProduct];
auto v = hybrid::gen_sample_list();
int gi = 0;
if(full_sample_list.size()) {
gi = full_sample_list.back().first;
full_sample_list.pop_back();
}
data.back().wallindex = gi;
for(auto x: v)
full_sample_list.emplace_back(x.first + gi, x.second);
sightranges[geometry] = 10;
}
/** after called become() on some spaces, actually start intra */
EX void start(int id IS(0)) {
in = true;
current = id;
data[current].gd.restoregame();
ginf[gProduct] = data[current].gi;
}
#if HDR
/** a convenience struct to switch back after a temporary switch_to */
struct resetter {
int ic;
resetter() { ic = current; }
~resetter() { if(in) switch_to(ic); }
};
#endif
EX void may_switch_to(cell *c) {
if(in) switch_to(intra_id[c]);
}
EX int full_wall_offset(cell *c) {
int wo = currentmap->wall_offset(c);
if(in) wo += data[intra_id[c]].wallindex;
return wo;
}
EX void check_portal_movement() {
transmatrix iView = view_inverse(View);
ld dist = hdist0(iView * C0);
int nei = -1;
for(int i=0; i<centerover->type; i++) {
ld dist1 = hdist0(currentmap->ray_iadj(centerover, i) * iView * C0);
if(dist1 < dist) nei = i, dist = dist1;
}
auto cw1 = cellwalker(centerover, nei);
ld c = camera_speed;
auto p = at_or_null(connections, cw1);
if(p) {
ld eps = 1e-3;
c /= p->id1.scale;
anims::cycle_length /= p->id1.scale;
array<hyperpoint, 3> ds; /* camera, forward, upward */
ds[0] = inverse(View) * C0;
ds[1] = inverse(get_shift_view_of(ctangent(2, -eps), View)) * C0;
ds[2] = inverse(get_shift_view_of(ctangent(1, +eps), View)) * C0;
for(auto& h: ds) h = p->id1.to_poco(h);
/* reset the original */
View = Id; NLP = Id;
switch_to(p->target_world);
centerover = p->tcw.at;
if(1) {
dynamicval<eGeometry> g(geometry, gCubeTiling);
for(auto& h: ds) h = p->T * h;
}
for(auto& h: ds) h = p->id2.from_poco(h);
set_view(ds[0], ds[1], ds[2]);
c *= p->id2.scale;
anims::cycle_length *= p->id2.scale;
camera_speed = c;
}
}
vector<cellwalker> unconnected;
void erase_unconnected(cellwalker cw) {
for(int i=0; i<isize(unconnected); i++)
if(unconnected[i] == cw)
unconnected.erase(unconnected.begin() + i);
}
int edit_spin;
void show_portals() {
gamescreen(1);
dialog::init(XLAT("manage portals"));
cellwalker cw(centerover, point_direction);
bool valid = point_direction >= 0 && point_direction < centerover->type;
dialog::addItem(XLAT("move to the next space"), 'm');
dialog::add_action([] {
int ic = (current + 1) % isize(data);
switch_to(ic);
});
bool in_list = false; for(cellwalker x: unconnected) if(x == cw) in_list = true;
if(!valid) ;
else if(connections.count(cw)) {
dialog::addItem(XLAT("disconnect this portal"), 'd');
dialog::add_action([cw] {
auto tcw = connections[cw].tcw;
unconnected.push_back(tcw);
connections.erase(cw);
connections.erase(tcw);
});
}
else if(in_list) {
dialog::addItem(XLAT("remove %1 from the list", lalign(0, cw)), 'r');
dialog::add_action([cw] {
erase_unconnected(cw);
});
}
else {
dialog::addItem(XLAT("add to list"), 'a');
dialog::add_action([cw] { unconnected.push_back(cw); });
for(auto p: unconnected) {
dialog::addItem(XLAT("connect " + lalign(0, p)), '1');
dialog::add_action([p, cw] {
connect_portal(cw, p, edit_spin);
erase_unconnected(p);
});
}
dialog::addSelItem(XLAT("portal orientation"), its(edit_spin), 'o');
dialog::add_action([] { edit_spin = edit_spin + 1; });
}
dialog::display();
}
#if HDR
struct portal_to_save {
cellwalker cw1;
cellwalker cw2;
int spin;
bool mirrored;
};
#endif
EX vector<portal_to_save> portals_to_save;
EX void prepare_to_save() {
portals_to_save.clear();
for(auto c: connections) if(c.second.scw < c.second.tcw) {
portals_to_save.emplace_back(portal_to_save{c.second.scw, c.second.tcw, c.second.spin_value, false});
}
}
EX void load_saved_portals() {
for(const auto& p: portals_to_save) connect_portal(p.cw1, p.cw2, p.spin);
}
auto hooks1 =
addHook(hooks_o_key, 90, [] (o_funcs& v) {
if(intra::in) v.push_back(named_dialog(XLAT("manage portals"), show_portals));
});
EX }
}