Implemented a vines finisher that creates vines in jungle biomes

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.IntNoise2D(xx, zz) < 0.5)
+			{
+				continue;
+			}
+
+			int Height = a_ChunkDesc.GetHeight(x, z);
+			for (int y = Height; y > 40; y--)
+			{
+				if (a_ChunkDesc.GetBlockType(x, y, z) != E_BLOCK_AIR)
+				{
+					// Can't place vines in non-air blocks
+					continue;
+				}
+
+				if (m_Noise.IntNoise3D(xx, y, zz) < 0.5)
+				{
+					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: