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rogueviz:: Impossibility presentation updated

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This commit is contained in:
Zeno Rogue 2022-05-09 11:09:30 +02:00
parent bd10f06a4c
commit da21b1cb00
2 changed files with 35 additions and 3 deletions
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4
rogueviz/nil-compass.cpp
View File

@ -43,6 +43,8 @@ vector<shape> shapes;
bool known;
int zeroticks;
bool draw_compass(cell *c, const shiftmatrix& V) {
if(!known) {
@ -85,7 +87,7 @@ bool draw_compass(cell *c, const shiftmatrix& V) {
poly_outline = 0;
for(auto& [col, i, is, sh]: shapes) {
ld t = 36 + ticks / 1000.;
ld t = 36 + (ticks - zeroticks) / 1000.;
auto remap = [&] (int _i, int _is) {
if(i == _i && is == _is) return col;

34
rogueviz/playing-with-impossibility.cpp
View File

@ -12,6 +12,11 @@ namespace cylon {
extern bool cylanim;
}
namespace nilcompass {
bool draw_compass(cell *c, const shiftmatrix& V);
extern int zeroticks;
}
namespace balls {
struct ball {
hyperpoint at;
@ -899,12 +904,36 @@ slide dmv_slides[] = {
}
},
{"a Puzzle about a Bear", 123, LEGAL::ANY,
{"Compasses in Nil", 123, LEGAL::ANY,
"However, it turns out that there actually exists a non-Euclidean geometry, "
"known as the Nil geometry, where constructions such as Penrose staircases and "
"triangles naturally appear!\n\n"
"Nil is a three-dimensional geometry, which gives new possibilities -- "
"Lines 'diverge in the third dimension' there. "
"lines 'diverge in the third dimension' there. "
"Every point has "
"well-defined North, East, South, West, Up and Down direction.\n\n"
"(press Home/End and arrow keys to move)",
[] (presmode mode) {
setCanvas(mode, '0');
slidecommand = "highlight dimensions";
if(mode == pmStart) {
tour::slide_backup(pmodel, mdGeodesic);
set_geometry(gNil);
start_game();
rogueviz::rv_hook(hooks_drawcell, 100, rogueviz::nilcompass::draw_compass);
tour::slide_backup(smooth_scrolling, true);
tour::slide_backup(mapeditor::drawplayer, false);
View = Id;
shift_view(ztangent(.5));
playermoved = false;
}
if(mode == pmStart || mode == pmKey)
rogueviz::nilcompass::zeroticks = ticks;
}
},
{"a Puzzle about a Bear", 123, LEGAL::ANY,
"To explain Nil geometry, we will start with a well-known puzzle.",
[] (presmode mode) {
@ -1226,6 +1255,7 @@ slide dmv_slides[] = {
,
[] (presmode mode) {
slide_url(mode, 'y', "YouTube link", "https://www.youtube.com/watch?v=mxvUAcgN3go");
slide_url(mode, 'n', "Nil Rider", "https://zenorogue.itch.io/nil-rider");
setCanvas(mode, '0');
if(mode == pmStart) {
stop_game();