From b691c43c44ff180d10e7d4a9afc83b98551ff586 Mon Sep 17 00:00:00 2001
From: daoge_cmd <3523206925@qq.com>
Date: Sun, 1 Mar 2026 12:16:08 +0800
Subject: Initial commit

---
 Minecraft.World/RegionHillsLayer.cpp | 78 ++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 Minecraft.World/RegionHillsLayer.cpp

(limited to 'Minecraft.World/RegionHillsLayer.cpp')

diff --git a/Minecraft.World/RegionHillsLayer.cpp b/Minecraft.World/RegionHillsLayer.cpp
new file mode 100644
index 00000000..dad114b0
--- /dev/null
+++ b/Minecraft.World/RegionHillsLayer.cpp
@@ -0,0 +1,78 @@
+#include "stdafx.h"
+#include "net.minecraft.world.level.biome.h"
+#include "IntCache.h"
+#include "RegionHillsLayer.h"
+
+RegionHillsLayer::RegionHillsLayer(__int64 seed, shared_ptr<Layer> parent) : Layer(seed)
+{
+	this->parent = parent;
+}
+
+intArray RegionHillsLayer::getArea(int xo, int yo, int w, int h)
+{
+	intArray b = parent->getArea(xo - 1, yo - 1, w + 2, h + 2);
+
+	intArray result = IntCache::allocate(w * h);
+	for (int y = 0; y < h; y++)
+	{
+		for (int x = 0; x < w; x++)
+		{
+			initRandom(x + xo, y + yo);
+			int old = b[(x + 1) + (y + 1) * (w + 2)];
+			if (nextRandom(3) == 0)
+			{
+				int next = old;
+				if (old == Biome::desert->id)
+				{
+					next = Biome::desertHills->id;
+				}
+				else if (old == Biome::forest->id)
+				{
+					next = Biome::forestHills->id;
+				}
+				else if (old == Biome::taiga->id)
+				{
+					next = Biome::taigaHills->id;
+				}
+				else if (old == Biome::plains->id)
+				{
+					next = Biome::forest->id;
+				}
+				else if (old == Biome::iceFlats->id)
+				{
+					next = Biome::iceMountains->id;
+				}
+				else if (old == Biome::jungle->id)
+				{
+					next = Biome::jungleHills->id;
+
+				}
+				if (next == old)
+				{
+					result[x + y * w] = old;
+				}
+				else
+				{
+					int _n = b[(x + 1) + (y + 1 - 1) * (w + 2)];
+					int _e = b[(x + 1 + 1) + (y + 1) * (w + 2)];
+					int _w = b[(x + 1 - 1) + (y + 1) * (w + 2)];
+					int _s = b[(x + 1) + (y + 1 + 1) * (w + 2)];
+					if (_n == old && _e == old && _w == old && _s == old)
+					{
+						result[x + y * w] = next;
+					}
+					else
+					{
+						result[x + y * w] = old;
+					}
+				}
+			}
+			else
+			{
+				result[x + y * w] = old;
+			}
+		}
+	}
+
+	return result;
+}
\ No newline at end of file
-- 
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