1 files changed, 61 insertions, 0 deletions
diff --git a/Minecraft.World/SmoothZoomLayer.cpp b/Minecraft.World/SmoothZoomLayer.cpp
new file mode 100644
index 00000000..3e1c55a1
--- /dev/null
+++ b/Minecraft.World/SmoothZoomLayer.cpp
@@ -0,0 +1,61 @@
+#include "stdafx.h"
+#include "net.minecraft.world.level.newbiome.layer.h"
+#include "System.h"
+
+SmoothZoomLayer::SmoothZoomLayer(__int64 seedMixup, shared_ptr<Layer>parent) : Layer(seedMixup)
+{
+	this->parent = parent;
+}
+
+intArray SmoothZoomLayer::getArea(int xo, int yo, int w, int h)
+{
+	int px = xo >> 1;
+	int py = yo >> 1;
+	int pw = (w >> 1) + 3;
+	int ph = (h >> 1) + 3;
+	intArray p = parent->getArea(px, py, pw, ph);
+
+	intArray tmp = IntCache::allocate((pw * 2) * (ph * 2));
+	int ww = (pw << 1);
+	for (int y = 0; y < ph - 1; y++)
+	{
+		int ry = y << 1;
+		int pp = ry * ww;
+		int ul = p[(0 + 0) + (y + 0) * pw];
+		int dl = p[(0 + 0) + (y + 1) * pw];
+		for (int x = 0; x < pw - 1; x++)
+		{
+			initRandom((x + px) << 1, (y + py) << 1);
+
+			int ur = p[(x + 1) + (y + 0) * pw];
+			int dr = p[(x + 1) + (y + 1) * pw];
+
+			tmp[pp] = ul;
+			tmp[pp++ + ww] = ul + (dl - ul) * (nextRandom(256)) / 256;
+			tmp[pp] = ul + (ur - ul) * (nextRandom(256)) / 256;
+
+			int a = ul + (ur - ul) * (nextRandom(256)) / 256;
+			int b = dl + (dr - dl) * (nextRandom(256)) / 256;
+			tmp[pp++ + ww] = a + (b - a) * (nextRandom(256)) / 256;
+
+			ul = ur;
+			dl = dr;
+		}
+	}
+	intArray result = IntCache::allocate(w * h);
+	for (int y = 0; y < h; y++)
+	{
+		System::arraycopy(tmp, (y + (yo & 1)) * (pw << 1) + (xo & 1), &result, y * w, w);
+	}
+	return result;
+}
+
+shared_ptr<Layer>SmoothZoomLayer::zoom(__int64 seed, shared_ptr<Layer>sup, int count)
+{
+	shared_ptr<Layer>result = sup;
+	for (int i = 0; i < count; i++)
+	{
+		result = shared_ptr<Layer>(new SmoothZoomLayer(seed + i, result));
+	}
+	return result;
+}
+\ No newline at end of file