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96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
#include "../hyper.h"
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// Copyright (C) 2011-2019 Zeno Rogue, see 'hyper.cpp' for details
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/*
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3D engines often represent rotations as unit quaternions. These form a three-dimensional elliptic space. What if we could fly through it?
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Lower left corner shows the rotation matching the current camera position. Beams in the rotation space correspond to bumps on the sphere.
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Run like:
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[hyper] -geo 2 -rotspace -rot_uscale 0.25 -qtm (space of rotations of the sphere)
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[hyper] -rotspace -rot_uscale 0.25 -qtm (space of rotations of the hyperbolic plane, slow)
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[hyper] -geo Nil -qtm (Nil, which is not a space of rotations, but similar; rendered in a similar way)
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*/
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namespace hr {
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namespace hybrid { extern hrmap *pmap; }
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namespace qtm {
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color_t rcolor() {
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color_t res;
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part(res, 0) = hrand(0x80);
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part(res, 1) = hrand(256);
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part(res, 2) = hrand(0x80) + 128;
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swap(part(res, 1), part(res, rand() % 2));
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swap(part(res, 2), part(res, rand() % 3));
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return res;
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}
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void set_cell(cell *c) {
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if(hybri) {
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cell *c1 = hybrid::get_where(c).first;
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if(c1->land != laHive) hybrid::in_underlying_geometry([&] { set_cell(c1); });
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c->land = c1->land;
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c->wall = c1->wall;
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c->landparam = c1->landparam;
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c->item = itNone;
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c->monst = moNone;
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}
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else {
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if(c->land == laHive) return;
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color_t col;
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if(hyperbolic)
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col = rcolor();
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else if(nil) {
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part(col, 0) = 128 + c->master->zebraval * 50;
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part(col, 1) = 128 + c->master->emeraldval * 50;
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part(col, 2) = 255;
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}
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else {
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hyperpoint h = calc_relative_matrix(c, currentmap->gamestart(), C0) * C0;
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part(col, 0) = (h[0] * 127.5 + 127.5);
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part(col, 1) = (h[1] * 127.5 + 127.5);
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part(col, 2) = (h[2] * 127.5 + 127.5);
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}
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c->landparam = col;
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c->land = laHive;
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c->wall = (nil ? (c->master->zebraval & c->master->emeraldval & 1) : pseudohept(c)) ? waWaxWall : waNone;
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c->item = itNone;
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c->monst = moNone;
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}
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}
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bool qtm_on;
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bool may_set_cell(cell *c, const transmatrix& T) {
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if(qtm_on) set_cell(c);
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return false;
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}
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int args() {
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using namespace arg;
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if(0) ;
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else if(argis("-qtm")) {
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PHASEFROM(2);
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qtm_on = true;
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}
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else return 1;
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return 0;
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}
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auto hooks = addHook(hooks_drawcell, 100, may_set_cell)
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+ addHook(hooks_args, 100, args);
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}
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}
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