Merge pull request #1781 from mc-server/Vines

Vines in caves

src/Generating/ComposableGenerator.cpp

@@ -616,6 +616,11 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 			int MaxDensity = a_IniFile.GetValueSetI("Generator", "VillageMaxDensity", 80);
 			m_FinishGens.push_back(std::make_shared<cVillageGen>(Seed, GridSize, MaxOffset, MaxDepth, MaxSize, MinDensity, MaxDensity, m_BiomeGen, m_CompositedHeightCache));
 		}
+		else if (NoCaseCompare(*itr, "Vines") == 0)
+		{
+			int Level = a_IniFile.GetValueSetI("Generator", "VinesLevel", 40);
+			m_FinishGens.push_back(std::make_shared<cFinishGenVines>(Seed, Level));
+		}
 		else if (NoCaseCompare(*itr, "WaterLakes") == 0)
 		{
 			int Probability = a_IniFile.GetValueSetI("Generator", "WaterLakesProbability", 25);

src/Generating/FinishGen.cpp

@@ -243,6 +243,100 @@ void cFinishGenTallGrass::GenFinish(cChunkDesc & a_ChunkDesc)
 
 
 
+////////////////////////////////////////////////////////////////////////////////
+// cFinishGenVines
+
+bool cFinishGenVines::IsJungleVariant(EMCSBiome a_Biome)
+{
+	switch (a_Biome)
+	{
+		case biJungle:
+		case biJungleEdge:
+		case biJungleEdgeM:
+		case biJungleHills:
+		case biJungleM:
+		{
+			return true;
+		}
+	}
+
+	return false;
+}
+
+
+
+
+
+void cFinishGenVines::GenFinish(cChunkDesc & a_ChunkDesc)
+{
+	for (int x = 0; x < cChunkDef::Width; x++)
+	{
+		int xx = x + a_ChunkDesc.GetChunkX() * cChunkDef::Width;
+		for (int z = 0; z < cChunkDef::Width; z++)
+		{
+			int zz = z + a_ChunkDesc.GetChunkZ() * cChunkDef::Width;
+			if (!IsJungleVariant(a_ChunkDesc.GetBiome(x, z)))
+			{
+				// Current biome isn't a jungle
+				continue;
+			}
+
+			if ((m_Noise.IntNoise2DInt(xx, zz) % 101) < 50)
+			{
+				continue;
+			}
+
+			int Height = a_ChunkDesc.GetHeight(x, z);
+			for (int y = Height; y > m_Level; y--)
+			{
+				if (a_ChunkDesc.GetBlockType(x, y, z) != E_BLOCK_AIR)
+				{
+					// Can't place vines in non-air blocks
+					continue;
+				}
+
+				if ((m_Noise.IntNoise3DInt(xx, y, zz) % 101) < 50)
+				{
+					continue;
+				}
+
+				std::vector<NIBBLETYPE> Places;
+				if ((x + 1 < cChunkDef::Width) && cBlockInfo::FullyOccupiesVoxel(a_ChunkDesc.GetBlockType(x + 1, y, z)))
+				{
+					Places.push_back(8);
+				}
+
+				if ((x - 1 > 0) && cBlockInfo::FullyOccupiesVoxel(a_ChunkDesc.GetBlockType(x - 1, y, z)))
+				{
+					Places.push_back(2);
+				}
+
+				if ((z + 1 < cChunkDef::Width) && cBlockInfo::FullyOccupiesVoxel(a_ChunkDesc.GetBlockType(x, y, z + 1)))
+				{
+					Places.push_back(1);
+				}
+
+				if ((z - 1 > 0) && cBlockInfo::FullyOccupiesVoxel(a_ChunkDesc.GetBlockType(x, y, z - 1)))
+				{
+					Places.push_back(4);
+				}
+
+				if (Places.size() == 0)
+				{
+					continue;
+				}
+
+				NIBBLETYPE Meta = Places[m_Noise.IntNoise3DInt(xx, y, zz) % Places.size()];
+				a_ChunkDesc.SetBlockTypeMeta(x, y, z, E_BLOCK_VINES, Meta);
+			}
+		}
+	}
+}
+
+
+
+
+
 ////////////////////////////////////////////////////////////////////////////////
 // cFinishGenSprinkleFoliage:
 

src/Generating/FinishGen.h

@@ -118,6 +118,29 @@ protected:
 
 
 
+class cFinishGenVines :
+	public cFinishGen
+{
+public:
+	cFinishGenVines(int a_Seed, int a_Level) :
+		m_Noise(a_Seed),
+		m_Level(a_Level)
+	{
+	}
+
+	bool IsJungleVariant(EMCSBiome a_Biome);
+
+protected:
+	cNoise m_Noise;
+	int    m_Level;
+
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
+};
+
+
+
+
+
 class cFinishGenSoulsandRims :
 	public cFinishGen
 {