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embeddings:: star probability configurable

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This commit is contained in:
Zeno Rogue
2023-02-18 19:33:27 +01:00
parent f73660c801
commit 5a40534c85
2 changed files with 16 additions and 2 deletions
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15
sky.cpp
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@@ -357,6 +357,17 @@ void draw_star(const shiftmatrix& V, const hpcshape& sh, color_t col, ld rev = f
queuepolyat(V1 * zpush(val), sh, col, PPR::SKY);
}
EX ld star_prob = 0.33;
/* the first star is supposed to appear as long as probability > 0 */
EX vector<ld> stars = {1e-20};
EX bool star_for(int i) {
i = i & ((1<<16)-1);
while(isize(stars) <= i) stars.push_back(randd());
return stars[i] < star_prob;
}
void celldrawer::draw_ceiling() {
if(!models::is_perspective(pmodel) || sphere) return;
@@ -368,11 +379,11 @@ void celldrawer::draw_ceiling() {
switch(ceiling_category(c)) {
/* ceilingless levels */
case 1: {
if(fieldpattern::fieldval_uniq(c) % 3 == 0)
if(star_for(fieldpattern::fieldval_uniq(c)))
draw_star(V, cgi.shNightStar, 0xFFFFFFFF);
add_to_sky(0x00000F, 0x00000F);
if(c->land == laAsteroids) {
if(fieldpattern::fieldval_uniq(c) % 9 < 3)
if(star_for(fieldpattern::fieldval_uniq(c) ^ 0x5555))
draw_star(V, cgi.shNightStar, 0xFFFFFFFF, true);
int sk = get_skybrightness(-1);
auto sky = draw_shapevec(c, V * MirrorZ, cgi.shFullFloor.levels[SIDE_SKY], 0x000000FF + 0x100 * (sk/17), PPR::SKY);