first commit

Minecraft.World/SwampRiversLayer.cpp

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+#include "stdafx.h"
+#include "net.minecraft.world.level.biome.h"
+#include "IntCache.h"
+#include "SwampRiversLayer.h"
+
+SwampRiversLayer::SwampRiversLayer(__int64 seed, shared_ptr<Layer> parent) : Layer(seed)
+{
+	this->parent = parent;
+}
+
+intArray SwampRiversLayer::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 ((old == Biome::swampland->id && nextRandom(6) == 0) || ((old == Biome::jungle->id || old == Biome::jungleHills->id) && nextRandom(8) == 0))
+			{
+				result[x + y * w] = Biome::river->id;
+			}
+			else
+			{
+				result[x + y * w] = old;
+			}
+		}
+	}
+
+	return result;
+}