mirror of
https://github.com/4jcraft/4jcraft.git
synced 2026-04-24 04:43:36 +00:00
114 lines
4.1 KiB
C++
114 lines
4.1 KiB
C++
#include "../../Platform/stdafx.h"
|
|
#include "../../Headers/net.minecraft.world.level.newbiome.layer.h"
|
|
#include "../../Platform/System.h"
|
|
|
|
VoronoiZoom::VoronoiZoom(int64_t seedMixup, std::shared_ptr<Layer> parent)
|
|
: Layer(seedMixup) {
|
|
this->parent = parent;
|
|
}
|
|
|
|
intArray VoronoiZoom::getArea(int xo, int yo, int w, int h) {
|
|
xo -= 2;
|
|
yo -= 2;
|
|
int bits = 2;
|
|
int ss = 1 << bits;
|
|
int px = xo >> bits;
|
|
int py = yo >> bits;
|
|
int pw = (w >> bits) + 3;
|
|
int ph = (h >> bits) + 3;
|
|
intArray p = parent->getArea(px, py, pw, ph);
|
|
|
|
// 4jcraft added all those casts to unsigned
|
|
int ww = (unsigned)pw << bits;
|
|
int hh = (unsigned)ph << bits;
|
|
intArray tmp = IntCache::allocate(ww * hh);
|
|
for (int y = 0; y < ph - 1; y++) {
|
|
int ul = p[(0 + 0) + (y + 0) * pw];
|
|
int dl = p[(0 + 0) + (y + 1) * pw];
|
|
for (int x = 0; x < pw - 1; x++) {
|
|
double s = ss * 0.9;
|
|
initRandom((unsigned)(x + px) << bits, (unsigned)(y + py) << bits);
|
|
double x0 = (nextRandom(1024) / 1024.0 - 0.5) * s;
|
|
double y0 = (nextRandom(1024) / 1024.0 - 0.5) * s;
|
|
initRandom((unsigned)(x + px + 1) << bits, (unsigned)(y + py)
|
|
<< bits);
|
|
double x1 = (nextRandom(1024) / 1024.0 - 0.5) * s + ss;
|
|
double y1 = (nextRandom(1024) / 1024.0 - 0.5) * s;
|
|
initRandom((unsigned)(x + px) << bits, (unsigned)(y + py + 1)
|
|
<< bits);
|
|
double x2 = (nextRandom(1024) / 1024.0 - 0.5) * s;
|
|
double y2 = (nextRandom(1024) / 1024.0 - 0.5) * s + ss;
|
|
initRandom((unsigned)(x + px + 1) << bits, (unsigned)(y + py + 1)
|
|
<< bits);
|
|
double x3 = (nextRandom(1024) / 1024.0 - 0.5) * s + ss;
|
|
double y3 = (nextRandom(1024) / 1024.0 - 0.5) * s + ss;
|
|
|
|
int ur = p[(x + 1) + (y + 0) * pw];
|
|
int dr = p[(x + 1) + (y + 1) * pw];
|
|
|
|
for (int yy = 0; yy < ss; yy++) {
|
|
int pp =
|
|
((unsigned)(y << bits) + yy) * ww + ((unsigned)(x << bits));
|
|
for (int xx = 0; xx < ss; xx++) {
|
|
double d0 = ((yy - y0) * (yy - y0) + (xx - x0) * (xx - x0));
|
|
double d1 = ((yy - y1) * (yy - y1) + (xx - x1) * (xx - x1));
|
|
double d2 = ((yy - y2) * (yy - y2) + (xx - x2) * (xx - x2));
|
|
double d3 = ((yy - y3) * (yy - y3) + (xx - x3) * (xx - x3));
|
|
|
|
if (d0 < d1 && d0 < d2 && d0 < d3) {
|
|
tmp[pp++] = ul;
|
|
} else if (d1 < d0 && d1 < d2 && d1 < d3) {
|
|
tmp[pp++] = ur;
|
|
} else if (d2 < d0 && d2 < d1 && d2 < d3) {
|
|
tmp[pp++] = dl;
|
|
} else {
|
|
tmp[pp++] = dr;
|
|
}
|
|
}
|
|
}
|
|
|
|
ul = ur;
|
|
dl = dr;
|
|
}
|
|
}
|
|
intArray result = IntCache::allocate(w * h);
|
|
for (int y = 0; y < h; y++) {
|
|
System::arraycopy(
|
|
tmp,
|
|
(y + (yo & (ss - 1))) * ((unsigned)pw << bits) + (xo & (ss - 1)),
|
|
&result, y * w, w);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
int VoronoiZoom::random(int a, int b) { return nextRandom(2) == 0 ? a : b; }
|
|
|
|
int VoronoiZoom::random(int a, int b, int c, int d) {
|
|
if (b == c && c == d) return b;
|
|
if (a == b && a == c) return a;
|
|
if (a == b && a == d) return a;
|
|
if (a == c && a == d) return a;
|
|
|
|
if (a == b && c != d) return a;
|
|
if (a == c && b != d) return a;
|
|
if (a == d && b != c) return a;
|
|
|
|
if (b == a && c != d) return b;
|
|
if (b == c && a != d) return b;
|
|
if (b == d && a != c) return b;
|
|
|
|
if (c == a && b != d) return c;
|
|
if (c == b && a != d) return c;
|
|
if (c == d && a != b) return c;
|
|
|
|
if (d == a && b != c) return c;
|
|
if (d == b && a != c) return c;
|
|
if (d == c && a != b) return c;
|
|
|
|
int s = nextRandom(4);
|
|
if (s == 0) return a;
|
|
if (s == 1) return b;
|
|
if (s == 2) return c;
|
|
return d;
|
|
}
|