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Code Issues Releases Wiki Activity

nilrider:: can now fly off surface

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This commit is contained in:
Zeno Rogue 2024-08-18 13:06:04 +02:00
parent 04b8287dbe
commit 448c08e925
3 changed files with 81 additions and 26 deletions
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2
rogueviz/nilrider/level.cpp
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@ -389,6 +389,8 @@ void level::init() {
start.where = mappt(startx+.5, starty+.5, 1);
start.t = 0;
start.timer = 0;
start.on_surface = this;
start.sstime = -100;
current = start;
println(hlog, "start.where = ", start.where);
println(hlog, "current.where = ", current.where, " : ", hr::format("%p", &current));

10
rogueviz/nilrider/nilrider.h
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@ -11,9 +11,16 @@ struct timestamp {
ld heading_angle; /**< the current heading angle */
ld vel; /**< the current velocity in units per second */
ld circpos; /**< controls the wheel graphics */
ld slope; /**< the current slope */
ld slope; /**< the current slope, as angle */
ld chg_slope; /**< slope used at surface state change */
ld gfx_slope; /**< current slope used by graphics */
ld t; /**< planning spline parameter */
ld timer = 0; /**< the timer, in seconds */
level *on_surface;/**< pointer to the sub-level if we are currently on the surface, nullptr otherwise */
ld sstime; /**< when did we leave or enter surface? for smoothing gfx_slope */
hyperpoint flyvel;/**< velocity vector if we are not on any surface */
ld circvel; /**< how fast the wheel is rotating if we are not on any surface, per second */
flagtype collected_triangles; /**< a bitset which shows which triangles are collected */
flagtype goals; /**< a bitset which shows which goals are complete */
@ -25,6 +32,7 @@ struct timestamp {
void draw_instruments(level*);
ld energy_in_squares();
bool collect(level*);
bool out_of_surface(level*);
void be_consistent();
};

95
rogueviz/nilrider/timestamp.cpp
View File

@ -82,10 +82,16 @@ void timestamp::draw_unilcycle(const shiftmatrix& V) {
bool tick_debug = false;
bool timestamp::out_of_surface(level *lev) {
auto xy = lev->get_xy_i(where);
char ch = lev->mapchar(xy);
return ch == '!';
}
bool timestamp::collect(level *lev) {
auto xy = lev->get_xy_i(where);
char ch = lev->mapchar(xy);
if(ch == 'r' || ch == '!') return false;
if(ch == 'r') return false;
if(ch == '*') {
for(int i=0; i<isize(lev->triangles); i++) {
auto& t = lev->triangles[i];
@ -143,31 +149,64 @@ void timestamp::be_consistent() {
bool timestamp::tick(level *lev) {
if(!collect(lev)) return false;
if(on_surface && !collect(lev)) return false;
const ld eps = slope_eps;
hyperpoint wnext = where;
wnext[0] += cos(heading_angle) * eps;
wnext[1] += sin(heading_angle) * eps;
wnext[2] = lev->surface(wnext);
wnext = gpushxto0(where) * wnext;
slope = atan(wnext[2] / eps);
auto ovel = vel;
vel -= sin(slope) * gravity / tps;
if(vel < 0) {
vel = 0;
if(ovel == 0) return false;
if(on_surface) {
hyperpoint wnext = where;
wnext[0] += cos(heading_angle) * eps;
wnext[1] += sin(heading_angle) * eps;
wnext[2] = lev->surface(wnext);
wnext = gpushxto0(where) * wnext;
slope = atan(wnext[2] / eps);
if(out_of_surface(lev)) {
on_surface = nullptr;
sstime = timer; chg_slope = gfx_slope;
flyvel = wnext * vel / hypot_d(3, wnext);
flyvel[3] = 0;
}
}
auto mvel = (vel + ovel) / 2;
where[0] += cos(heading_angle) * mvel * cos(slope) / tps;
where[1] += sin(heading_angle) * mvel * cos(slope) / tps;
where[2] = lev->surface(where);
circpos += mvel / whrad / tps;
if(on_surface) {
auto ovel = vel;
vel -= sin(slope) * gravity / tps;
if(vel < 0) {
vel = 0;
if(ovel == 0) return false;
}
auto mvel = (vel + ovel) / 2;
where[0] += cos(heading_angle) * mvel * cos(slope) / tps;
where[1] += sin(heading_angle) * mvel * cos(slope) / tps;
where[2] = lev->surface(where);
circvel = mvel / whrad;
}
else {
auto oflyvel = flyvel;
flyvel = rgpushxto0(where) * flyvel;
flyvel[2] -= gravity / tps / 2;
// todo rewrite geodesic_step to take gravity into account into RK4 correctly
flyvel /= tps;
nisot::geodesic_step(where, flyvel);
flyvel *= tps;
flyvel[2] -= gravity / tps / 2;
auto mflyvel = (flyvel + oflyvel) / 2;
heading_angle = atan2(mflyvel[1], mflyvel[0]);
flyvel = gpushxto0(where) * flyvel;
mflyvel = gpushxto0(where) * mflyvel;
slope = atan(mflyvel[2] / hypot_d(2, mflyvel));
vel = hypot_d(3, flyvel);
}
circpos += circvel / tps;
timer += 1. / tps;
return true;
}
@ -195,7 +234,8 @@ void timestamp::centerview(level *lev) {
transmatrix T = View;
ld gfx_slope = binsearch(-90*degree, min(slope, min_gfx_slope), [&] (ld slope) {
gfx_slope = min_gfx_slope;
if(on_surface) gfx_slope = binsearch(-90*degree, min(slope, min_gfx_slope), [&] (ld slope) {
View = T;
rotate_view(cspin(1, 2, slope));
for(int i=0; i<8; i++) {
@ -208,7 +248,12 @@ void timestamp::centerview(level *lev) {
}
return false;
}, 10);
if(timer < sstime + 1) {
ld t = timer - sstime;
gfx_slope = lerp(chg_slope, gfx_slope, t * t * (3 - 2*t));
}
View = T;
rotate_view(cspin(1, 2, gfx_slope));
shift_view(ztangent(whdist * lev->scale));