1 files changed, 684 insertions, 0 deletions

diff --git a/src/Generating/Trees.cpp b/src/Generating/Trees.cpp
new file mode 100644
index 000000000..7ca30c60f
--- /dev/null
+++ b/src/Generating/Trees.cpp
@@ -0,0 +1,684 @@
+
+// Trees.cpp
+
+// Implements helper functions used for generating trees
+
+#include "Globals.h"
+#include "Trees.h"
+#include "../BlockID.h"
+
+
+
+
+// DEBUG:
+int gTotalLargeJungleTrees = 0;
+int gOversizeLargeJungleTrees = 0;
+
+
+
+
+
+typedef struct
+{
+	int x, z;
+} sCoords;
+
+typedef struct
+{
+	int x, z;
+	NIBBLETYPE Meta;
+} sMetaCoords;
+
+static const sCoords Corners[] =
+{
+	{-1, -1},
+	{-1, 1},
+	{1, -1},
+	{1, 1},
+} ;
+
+// BigO = a big ring of blocks, used for generating horz slices of treetops, the number indicates the radius
+
+static const sCoords BigO1[] =
+{
+	          {0, -1},
+	{-1,  0},          {1,  0},
+	          {0,  1},
+} ;
+
+static const sCoords BigO2[] =
+{
+	          {-1, -2}, {0, -2}, {1, -2},
+	{-2, -1}, {-1, -1}, {0, -1}, {1, -1}, {2, -1},
+	{-2,  0}, {-1,  0},          {1,  0}, {2,  0},
+	{-2,  1}, {-1,  1}, {0,  1}, {1,  1}, {2,  1},
+	          {-1,  2}, {0,  2}, {1,  2},
+} ;
+
+static const sCoords BigO3[] =
+{
+	          {-2, -3}, {-1, -3}, {0, -3}, {1, -3}, {2, -3},
+	{-3, -2}, {-2, -2}, {-1, -2}, {0, -2}, {1, -2}, {2, -2}, {3, -2},
+	{-3, -1}, {-2, -1}, {-1, -1}, {0, -1}, {1, -1}, {2, -1}, {3, -1},
+	{-3,  0}, {-2,  0}, {-1,  0},          {1,  0}, {2,  0}, {3,  0},
+	{-3,  1}, {-2,  1}, {-1,  1}, {0,  1}, {1,  1}, {2,  1}, {3,  1},
+	{-3,  2}, {-2,  2}, {-1,  2}, {0,  2}, {1,  2}, {2,  2}, {3,  2},
+	          {-2,  3}, {-1,  3}, {0,  3}, {1,  3}, {2,  3},
+} ;
+
+static const sCoords BigO4[] = // Part of Big Jungle tree
+{
+	                    {-2, -4}, {-1, -4}, {0, -4}, {1, -4}, {2, -4},
+	          {-3, -3}, {-2, -3}, {-1, -3}, {0, -3}, {1, -3}, {2, -3}, {3, -3},
+	{-4, -2}, {-3, -2}, {-2, -2}, {-1, -2}, {0, -2}, {1, -2}, {2, -2}, {3, -2}, {4, -2},
+	{-4, -1}, {-3, -1}, {-2, -1}, {-1, -1}, {0, -1}, {1, -1}, {2, -1}, {3, -1}, {4, -1},
+	{-4,  0}, {-3,  0}, {-2,  0}, {-1,  0},          {1,  0}, {2,  0}, {3,  0}, {4,  0},
+	{-4,  1}, {-3,  1}, {-2,  1}, {-1,  1}, {0,  1}, {1,  1}, {2,  1}, {3,  1}, {4,  1},
+	{-4,  2}, {-3,  2}, {-2,  2}, {-1,  2}, {0,  2}, {1,  2}, {2,  2}, {3,  2}, {4,  2},
+	          {-3,  3}, {-2,  3}, {-1,  3}, {0,  3}, {1,  3}, {2,  3}, {3,  3},
+	                    {-2,  4}, {-1,  4}, {0,  4}, {1,  4}, {2,  4},
+} ;
+
+
+
+
+
+typedef struct 
+{
+	const sCoords * Coords;
+	size_t          Count;
+} sCoordsArr;
+
+static const sCoordsArr BigOs[] =
+{
+	{BigO1, ARRAYCOUNT(BigO1)},
+	{BigO2, ARRAYCOUNT(BigO2)},
+	{BigO3, ARRAYCOUNT(BigO3)},
+	{BigO4, ARRAYCOUNT(BigO4)},
+} ;
+
+
+
+
+
+/// Pushes a specified layer of blocks of the same type around (x, h, z) into a_Blocks
+inline void PushCoordBlocks(int a_BlockX, int a_Height, int a_BlockZ, sSetBlockVector & a_Blocks, const sCoords * a_Coords, size_t a_NumCoords, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta)
+{
+	for (size_t i = 0; i < a_NumCoords; i++)
+	{
+		a_Blocks.push_back(sSetBlock(a_BlockX + a_Coords[i].x, a_Height, a_BlockZ + a_Coords[i].z, a_BlockType, a_Meta));
+	}
+}
+
+
+
+
+inline void PushCornerBlocks(int a_BlockX, int a_Height, int a_BlockZ, int a_Seq, cNoise & a_Noise, int a_Chance, sSetBlockVector & a_Blocks, int a_CornersDist, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta)
+{
+	for (size_t i = 0; i < ARRAYCOUNT(Corners); i++)
+	{
+		int x = a_BlockX + Corners[i].x;
+		int z = a_BlockZ + Corners[i].z;
+		if (a_Noise.IntNoise3DInt(x + 64 * a_Seq, a_Height, z + 64 * a_Seq) <= a_Chance)
+		{
+			a_Blocks.push_back(sSetBlock(x, a_Height, z, a_BlockType, a_Meta));
+		}
+	}  // for i - Corners[]
+}
+
+
+
+
+
+inline void PushSomeColumns(int a_BlockX, int a_Height, int a_BlockZ, int a_ColumnHeight, int a_Seq, cNoise & a_Noise, int a_Chance, sSetBlockVector & a_Blocks, const sMetaCoords * a_Coords, size_t a_NumCoords, BLOCKTYPE a_BlockType)
+{
+	for (size_t i = 0; i < a_NumCoords; i++)
+	{
+		int x = a_BlockX + a_Coords[i].x;
+		int z = a_BlockZ + a_Coords[i].z;
+		if (a_Noise.IntNoise3DInt(x + 64 * a_Seq, a_Height + i, z + 64 * a_Seq) <= a_Chance)
+		{
+			for (int j = 0; j < a_ColumnHeight; j++)
+			{
+				a_Blocks.push_back(sSetBlock(x, a_Height - j, z, a_BlockType, a_Coords[i].Meta));
+			}
+		}
+	}  // for i - a_Coords[]
+}
+
+
+
+
+
+void GetTreeImageByBiome(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, EMCSBiome a_Biome, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	switch (a_Biome)
+	{
+		case biPlains:
+		case biExtremeHills:
+		case biExtremeHillsEdge:
+		case biForest:
+		case biMushroomIsland:
+		case biMushroomShore:
+		case biForestHills:
+		{
+			// Apple or birch trees:
+			if (a_Noise.IntNoise3DInt(a_BlockX, a_BlockY + 16 * a_Seq, a_BlockZ + 16 * a_Seq) < 0x5fffffff)
+			{
+				GetAppleTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+			}
+			else
+			{
+				GetBirchTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+			}
+			break;
+		}
+		
+		case biTaiga:
+		case biIcePlains:
+		case biIceMountains:
+		case biTaigaHills:
+		{
+			// Conifers
+			GetConiferTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+			break;
+		}
+		
+		case biSwampland:
+		{
+			// Swamp trees:
+			GetSwampTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+			break;
+		}
+		
+		case biJungle:
+		case biJungleHills:
+		{
+			// Apple bushes, large jungle trees, small jungle trees
+			if (a_Noise.IntNoise3DInt(a_BlockX, a_BlockY + 16 * a_Seq, a_BlockZ + 16 * a_Seq) < 0x6fffffff)
+			{
+				GetAppleBushImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+			}
+			else 
+			{
+				GetJungleTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+			}
+		}
+	}
+}
+
+
+
+
+
+void GetAppleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	if (a_Noise.IntNoise3DInt(a_BlockX + 32 * a_Seq, a_BlockY + 32 * a_Seq, a_BlockZ) < 0x60000000)
+	{
+		GetSmallAppleTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+	}
+	else
+	{
+		GetLargeAppleTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+	}
+}
+
+
+
+
+
+void GetSmallAppleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	/* Small apple tree has:
+	- a top plus (no log)
+	- optional BigO1 + random corners (log)
+	- 2 layers of BigO2 + random corners (log)
+	- 1 to 3 blocks of trunk
+	*/
+	
+	int Random = a_Noise.IntNoise3DInt(a_BlockX + 64 * a_Seq, a_BlockY, a_BlockZ) >> 3;
+	
+	int Heights[] = {1, 2, 2, 3} ;
+	int Height = 1 + Heights[Random & 3];
+	Random >>= 2;
+	
+	// Pre-alloc so that we don't realloc too often later:
+	a_LogBlocks.reserve(Height + 5);
+	a_OtherBlocks.reserve(ARRAYCOUNT(BigO2) * 2 + ARRAYCOUNT(BigO1) + ARRAYCOUNT(Corners) * 3 + 3 + 5);
+	
+	// Trunk:
+	for (int i = 0; i < Height; i++)
+	{
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, a_BlockY + i, a_BlockZ, E_BLOCK_LOG, E_META_LOG_APPLE));
+	}
+	int Hei = a_BlockY + Height;
+	
+	// 2 BigO2 + corners layers:
+	for (int i = 0; i < 2; i++)
+	{
+		PushCoordBlocks (a_BlockX, Hei, a_BlockZ, a_OtherBlocks, BigO2, ARRAYCOUNT(BigO2), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		PushCornerBlocks(a_BlockX, Hei, a_BlockZ, a_Seq, a_Noise, 0x5000000 - i * 0x10000000, a_OtherBlocks, 2, E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, Hei, a_BlockZ, E_BLOCK_LOG, E_META_LOG_APPLE));
+		Hei++;
+	}  // for i - 2*
+	
+	// Optional BigO1 + corners layer:
+	if ((Random & 1) == 0)
+	{
+		PushCoordBlocks (a_BlockX, Hei, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		PushCornerBlocks(a_BlockX, Hei, a_BlockZ, a_Seq, a_Noise, 0x6000000, a_OtherBlocks, 1, E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, Hei, a_BlockZ, E_BLOCK_LOG, E_META_LOG_APPLE));
+		Hei++;
+	}
+	
+	// Top plus:
+	PushCoordBlocks(a_BlockX, Hei, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+	a_OtherBlocks.push_back(sSetBlock(a_BlockX, Hei, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_APPLE));
+}
+
+
+
+
+
+void GetLargeAppleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// TODO
+}
+
+
+
+
+
+void GetBirchTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	int Height = 5 + (a_Noise.IntNoise3DInt(a_BlockX + 64 * a_Seq, a_BlockY, a_BlockZ) % 3);
+	
+	// Prealloc, so that we don't realloc too often later:
+	a_LogBlocks.reserve(Height);
+	a_OtherBlocks.reserve(80);
+	
+	// The entire trunk, out of logs:
+	for (int i = Height - 1; i >= 0; --i)
+	{
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, a_BlockY + i, a_BlockZ, E_BLOCK_LOG, E_META_LOG_BIRCH));
+	}
+	int h = a_BlockY + Height;
+	
+	// Top layer - just the Plus:
+	PushCoordBlocks(a_BlockX, h, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_BIRCH);
+	a_OtherBlocks.push_back(sSetBlock(a_BlockX, h, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_BIRCH));  // There's no log at this layer
+	h--;
+	
+	// Second layer - log, Plus and maybe Corners:
+	PushCoordBlocks (a_BlockX, h, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_BIRCH);
+	PushCornerBlocks(a_BlockX, h, a_BlockZ, a_Seq, a_Noise, 0x5fffffff, a_OtherBlocks, 1, E_BLOCK_LEAVES, E_META_LEAVES_BIRCH);
+	h--;
+	
+	// Third and fourth layers - BigO2 and maybe 2*Corners:
+	for (int Row = 0; Row < 2; Row++)
+	{
+		PushCoordBlocks (a_BlockX, h, a_BlockZ, a_OtherBlocks, BigO2, ARRAYCOUNT(BigO2), E_BLOCK_LEAVES, E_META_LEAVES_BIRCH);
+		PushCornerBlocks(a_BlockX, h, a_BlockZ, a_Seq, a_Noise, 0x3fffffff + Row * 0x10000000, a_OtherBlocks, 2, E_BLOCK_LEAVES, E_META_LEAVES_BIRCH);
+		h--;
+	}  // for Row - 2*
+}
+
+
+
+
+
+void GetConiferTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// Half chance for a spruce, half for a pine:
+	if (a_Noise.IntNoise3DInt(a_BlockX + 64 * a_Seq, a_BlockY, a_BlockZ + 32 * a_Seq) < 0x40000000)
+	{
+		GetSpruceTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+	}
+	else
+	{
+		GetPineTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+	}
+}
+
+
+
+
+
+void GetSpruceTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// Spruces have a top section with layer sizes of (0, 1, 0) or only (1, 0),
+	// then 1 - 3 sections of ascending sizes (1, 2) [most often], (1, 3) or (1, 2, 3)
+	// and an optional bottom section of size 1, followed by 1 - 3 clear trunk blocks
+	
+	// We'll use bits from this number as partial random numbers; but the noise function has mod8 irregularities
+	// (each of the mod8 remainders has a very different chance of occurrence) - that's why we divide by 8
+	int MyRandom = a_Noise.IntNoise3DInt(a_BlockX + 32 * a_Seq, a_BlockY + 32 * a_Seq, a_BlockZ) / 8;
+	
+	static const int  sHeights[] = {1, 2, 2, 3};
+	int Height = sHeights[MyRandom & 3];
+	MyRandom >>= 2;
+
+	// Prealloc, so that we don't realloc too often later:
+	a_LogBlocks.reserve(Height);
+	a_OtherBlocks.reserve(180);
+	
+	// Clear trunk blocks:
+	for (int i = 0; i < Height; i++)
+	{
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, a_BlockY + i, a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+	}
+	Height += a_BlockY;
+	
+	// Optional size-1 bottom leaves layer:
+	if ((MyRandom & 1) == 0)
+	{
+		PushCoordBlocks(a_BlockX, Height, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+		a_OtherBlocks.push_back(sSetBlock(a_BlockX, Height, a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+		Height++;
+	}
+	MyRandom >>= 1;
+	
+	// 1 to 3 sections of leaves layers:
+	static const int sNumSections[] = {1, 2, 2, 3};
+	int NumSections = sNumSections[MyRandom & 3];
+	MyRandom >>= 2;
+	for (int i = 0; i < NumSections; i++)
+	{
+		switch (MyRandom & 3)  // SectionType; (1, 2) twice as often as the other two
+		{
+			case 0:
+			case 1:
+			{
+				PushCoordBlocks(a_BlockX, Height,     a_BlockZ, a_OtherBlocks, BigO2, ARRAYCOUNT(BigO2), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+				PushCoordBlocks(a_BlockX, Height + 1, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+				a_LogBlocks.push_back(sSetBlock(a_BlockX, Height,     a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+				a_LogBlocks.push_back(sSetBlock(a_BlockX, Height + 1, a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+				Height += 2;
+				break;
+			}
+			case 2:
+			{
+				PushCoordBlocks(a_BlockX, Height,     a_BlockZ, a_OtherBlocks, BigO3, ARRAYCOUNT(BigO3), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+				PushCoordBlocks(a_BlockX, Height + 1, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+				a_LogBlocks.push_back(sSetBlock(a_BlockX, Height,     a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+				a_LogBlocks.push_back(sSetBlock(a_BlockX, Height + 1, a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+				Height += 2;
+				break;
+			}
+			case 3:
+			{
+				PushCoordBlocks(a_BlockX, Height,     a_BlockZ, a_OtherBlocks, BigO3, ARRAYCOUNT(BigO3), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+				PushCoordBlocks(a_BlockX, Height + 1, a_BlockZ, a_OtherBlocks, BigO2, ARRAYCOUNT(BigO2), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+				PushCoordBlocks(a_BlockX, Height + 2, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+				a_LogBlocks.push_back(sSetBlock(a_BlockX, Height,     a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+				a_LogBlocks.push_back(sSetBlock(a_BlockX, Height + 1, a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+				a_LogBlocks.push_back(sSetBlock(a_BlockX, Height + 2, a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+				Height += 3;
+				break;
+			}
+		}  // switch (SectionType)
+		MyRandom >>= 2;
+	}  // for i - Sections
+	
+	if ((MyRandom & 1) == 0)
+	{
+		// (0, 1, 0) top:
+		a_LogBlocks.push_back  (sSetBlock(a_BlockX, Height,     a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+		PushCoordBlocks                  (a_BlockX, Height + 1, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+		a_OtherBlocks.push_back(sSetBlock(a_BlockX, Height + 1, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_CONIFER));
+		a_OtherBlocks.push_back(sSetBlock(a_BlockX, Height + 2, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_CONIFER));
+	}
+	else
+	{
+		// (1, 0) top:
+		a_OtherBlocks.push_back(sSetBlock(a_BlockX, Height,     a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_CONIFER));
+		PushCoordBlocks                  (a_BlockX, Height + 1, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+		a_OtherBlocks.push_back(sSetBlock(a_BlockX, Height + 1, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_CONIFER));
+	}
+}
+
+
+
+
+
+void GetPineTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// Tall, little leaves on top. The top leaves are arranged in a shape of two cones joined by their bases.
+	// There can be one or two layers representing the cone bases (SameSizeMax)
+	
+	int MyRandom = a_Noise.IntNoise3DInt(a_BlockX + 32 * a_Seq, a_BlockY, a_BlockZ + 32 * a_Seq) / 8;
+	int TrunkHeight = 8 + (MyRandom % 3);
+	int SameSizeMax = ((MyRandom & 8) == 0) ? 1 : 0;
+	MyRandom >>= 3;
+	int NumLeavesLayers = 2 + (MyRandom % 3);  // Number of layers that have leaves in them
+	if (NumLeavesLayers == 2)
+	{
+		SameSizeMax = 0;
+	}
+	
+	// Pre-allocate the vector:
+	a_LogBlocks.reserve(TrunkHeight);
+	a_OtherBlocks.reserve(NumLeavesLayers * 25);
+
+	// The entire trunk, out of logs:
+	for (int i = TrunkHeight; i >= 0; --i)
+	{
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, a_BlockY + i, a_BlockZ, E_BLOCK_LOG, E_META_LOG_CONIFER));
+	}
+	int h = a_BlockY + TrunkHeight + 2;
+
+	// Top layer - just a single leaves block:	
+	a_OtherBlocks.push_back(sSetBlock(a_BlockX, h, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_CONIFER));
+	h--;
+
+	// One more layer is above the trunk, push the central leaves:	
+	a_OtherBlocks.push_back(sSetBlock(a_BlockX, h, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_CONIFER));
+
+	// Layers expanding in size, then collapsing again:
+	// LOGD("Generating %d layers of pine leaves, SameSizeMax = %d", NumLeavesLayers, SameSizeMax);
+	for (int i = 0; i < NumLeavesLayers; ++i)
+	{
+		int LayerSize = std::min(i, NumLeavesLayers - i + SameSizeMax - 1);
+		// LOGD("LayerSize %d: %d", i, LayerSize);
+		if (LayerSize < 0)
+		{
+			break;
+		}
+		ASSERT(LayerSize < ARRAYCOUNT(BigOs));
+		PushCoordBlocks(a_BlockX, h, a_BlockZ, a_OtherBlocks, BigOs[LayerSize].Coords, BigOs[LayerSize].Count, E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
+		h--;
+	}
+}
+
+
+
+
+
+void GetSwampTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// Vines are around the BigO3, but not in the corners; need proper meta for direction
+	static const sMetaCoords Vines[] =
+	{
+		{-2, -4, 1}, {-1, -4, 1}, {0, -4, 1}, {1, -4, 1}, {2, -4, 1},  // North face
+		{-2,  4, 4}, {-1,  4, 4}, {0,  4, 4}, {1,  4, 4}, {2,  4, 4},  // South face
+		{4,  -2, 2}, {4,  -1, 2}, {4,  0, 2}, {4,  1, 2}, {4,  2, 2},  // East face
+		{-4, -2, 8}, {-4, -1, 8}, {-4, 0, 8}, {-4, 1, 8}, {-4, 2, 8},  // West face
+	} ;
+
+	int Height = 3 + (a_Noise.IntNoise3DInt(a_BlockX + 32 * a_Seq, a_BlockY, a_BlockZ + 32 * a_Seq) / 8) % 3;
+	
+	a_LogBlocks.reserve(Height);
+	a_OtherBlocks.reserve(2 * ARRAYCOUNT(BigO2) + 2 * ARRAYCOUNT(BigO3) + Height * ARRAYCOUNT(Vines) + 20);
+	
+	for (int i = 0; i < Height; i++)
+	{
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, a_BlockY + i, a_BlockZ, E_BLOCK_LOG, E_META_LOG_APPLE));
+	}
+	int hei = a_BlockY + Height - 2;
+	
+	// Put vines around the lowermost leaves layer:
+	PushSomeColumns(a_BlockX, hei, a_BlockZ, Height, a_Seq, a_Noise, 0x3fffffff, a_OtherBlocks, Vines, ARRAYCOUNT(Vines), E_BLOCK_VINES);
+	
+	// The lower two leaves layers are BigO3 with log in the middle and possibly corners:
+	for (int i = 0; i < 2; i++)
+	{
+		PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO3, ARRAYCOUNT(BigO3), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		PushCornerBlocks(a_BlockX, hei, a_BlockZ, a_Seq, a_Noise, 0x5fffffff, a_OtherBlocks, 3, E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		hei++;
+	}  // for i - 2*
+
+	// The upper two leaves layers are BigO2 with leaves in the middle and possibly corners:
+	for (int i = 0; i < 2; i++)
+	{
+		PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO2, ARRAYCOUNT(BigO2), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		PushCornerBlocks(a_BlockX, hei, a_BlockZ, a_Seq, a_Noise, 0x5fffffff, a_OtherBlocks, 3, E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		a_OtherBlocks.push_back(sSetBlock(a_BlockX, hei, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_APPLE));
+		hei++;
+	}  // for i - 2*
+}
+
+
+
+
+
+void GetAppleBushImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	a_OtherBlocks.reserve(3 + ARRAYCOUNT(BigO2) + ARRAYCOUNT(BigO1));
+	
+	int hei = a_BlockY;
+	a_LogBlocks.push_back(sSetBlock(a_BlockX, hei, a_BlockZ, E_BLOCK_LOG, E_META_LOG_JUNGLE));
+	PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO2, ARRAYCOUNT(BigO2), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+	hei++;
+	
+	a_OtherBlocks.push_back(sSetBlock(a_BlockX, hei, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_APPLE));
+	PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+	hei++;
+	
+	a_OtherBlocks.push_back(sSetBlock(a_BlockX, hei, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_APPLE));
+}
+
+
+
+
+
+void GetJungleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	if (a_Noise.IntNoise3DInt(a_BlockX + 32 * a_Seq, a_BlockY + 32 * a_Seq, a_BlockZ) < 0x60000000)
+	{
+		GetSmallJungleTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+	}
+	else
+	{
+		GetLargeJungleTreeImage(a_BlockX, a_BlockY, a_BlockZ, a_Noise, a_Seq, a_LogBlocks, a_OtherBlocks);
+	}
+}
+
+
+
+
+
+void GetLargeJungleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// TODO: Generate proper jungle trees with branches
+
+	// Vines are around the BigO4, but not in the corners; need proper meta for direction
+	static const sMetaCoords Vines[] =
+	{
+		{-2, -5, 1}, {-1, -5, 1}, {0, -5, 1}, {1, -5, 1}, {2, -5, 1},  // North face
+		{-2,  5, 4}, {-1,  5, 4}, {0,  5, 4}, {1,  5, 4}, {2,  5, 4},  // South face
+		{5,  -2, 2}, {5,  -1, 2}, {5,  0, 2}, {5,  1, 2}, {5,  2, 2},  // East face
+		{-5, -2, 8}, {-5, -1, 8}, {-5, 0, 8}, {-5, 1, 8}, {-5, 2, 8},  // West face
+		// TODO: vines around the trunk, proper metas and height
+	} ;
+	
+	int Height = 24 + (a_Noise.IntNoise3DInt(a_BlockX + 32 * a_Seq, a_BlockY, a_BlockZ + 32 * a_Seq) / 11) % 24;
+	
+	a_LogBlocks.reserve(Height * 4);
+	a_OtherBlocks.reserve(2 * ARRAYCOUNT(BigO4) + ARRAYCOUNT(BigO3) + Height * ARRAYCOUNT(Vines) + 50);
+	
+	for (int i = 0; i < Height; i++)
+	{
+		a_LogBlocks.push_back(sSetBlock(a_BlockX,     a_BlockY + i, a_BlockZ,     E_BLOCK_LOG, E_META_LOG_JUNGLE));
+		a_LogBlocks.push_back(sSetBlock(a_BlockX + 1, a_BlockY + i, a_BlockZ,     E_BLOCK_LOG, E_META_LOG_JUNGLE));
+		a_LogBlocks.push_back(sSetBlock(a_BlockX,     a_BlockY + i, a_BlockZ + 1, E_BLOCK_LOG, E_META_LOG_JUNGLE));
+		a_LogBlocks.push_back(sSetBlock(a_BlockX + 1, a_BlockY + i, a_BlockZ + 1, E_BLOCK_LOG, E_META_LOG_JUNGLE));
+	}
+	int hei = a_BlockY + Height - 2;
+	
+	// Put vines around the lowermost leaves layer:
+	PushSomeColumns(a_BlockX, hei, a_BlockZ, Height, a_Seq, a_Noise, 0x3fffffff, a_OtherBlocks, Vines, ARRAYCOUNT(Vines), E_BLOCK_VINES);
+	
+	// The lower two leaves layers are BigO4 with log in the middle and possibly corners:
+	for (int i = 0; i < 2; i++)
+	{
+		PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO4, ARRAYCOUNT(BigO4), E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+		PushCornerBlocks(a_BlockX, hei, a_BlockZ, a_Seq, a_Noise, 0x5fffffff, a_OtherBlocks, 3, E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+		hei++;
+	}  // for i - 2*
+
+	// The top leaves layer is a BigO3 with leaves in the middle and possibly corners:
+	PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO3, ARRAYCOUNT(BigO3), E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+	PushCornerBlocks(a_BlockX, hei, a_BlockZ, a_Seq, a_Noise, 0x5fffffff, a_OtherBlocks, 3, E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+	a_OtherBlocks.push_back(sSetBlock(a_BlockX, hei, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE));
+}
+
+
+
+
+
+void GetSmallJungleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// Vines are around the BigO3, but not in the corners; need proper meta for direction
+	static const sMetaCoords Vines[] =
+	{
+		{-2, -4, 1}, {-1, -4, 1}, {0, -4, 1}, {1, -4, 1}, {2, -4, 1},  // North face
+		{-2,  4, 4}, {-1,  4, 4}, {0,  4, 4}, {1,  4, 4}, {2,  4, 4},  // South face
+		{4,  -2, 2}, {4,  -1, 2}, {4,  0, 2}, {4,  1, 2}, {4,  2, 2},  // East face
+		{-4, -2, 8}, {-4, -1, 8}, {-4, 0, 8}, {-4, 1, 8},              // West face
+		// TODO: proper metas and height: {0,  1, 1},  {0, -1, 4},  {-1, 0, 2}, {1,  1, 8},  // Around the tunk
+	} ;
+
+	int Height = 7 + (a_Noise.IntNoise3DInt(a_BlockX + 5 * a_Seq, a_BlockY, a_BlockZ + 5 * a_Seq) / 5) % 3;
+	
+	a_LogBlocks.reserve(Height);
+	a_OtherBlocks.reserve(
+		2 * ARRAYCOUNT(BigO3) +      // O3 layer, 2x
+		2 * ARRAYCOUNT(BigO2) +      // O2 layer, 2x
+		ARRAYCOUNT(BigO1) + 1 +      // Plus on the top
+		Height * ARRAYCOUNT(Vines) + // Vines
+		50  // some safety
+	);
+	
+	for (int i = 0; i < Height; i++)
+	{
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, a_BlockY + i, a_BlockZ, E_BLOCK_LOG, E_META_LOG_JUNGLE));
+	}
+	int hei = a_BlockY + Height - 3;
+	
+	// Put vines around the lowermost leaves layer:
+	PushSomeColumns(a_BlockX, hei, a_BlockZ, Height, a_Seq, a_Noise, 0x3fffffff, a_OtherBlocks, Vines, ARRAYCOUNT(Vines), E_BLOCK_VINES);
+	
+	// The lower two leaves layers are BigO3 with log in the middle and possibly corners:
+	for (int i = 0; i < 2; i++)
+	{
+		PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO3, ARRAYCOUNT(BigO3), E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+		PushCornerBlocks(a_BlockX, hei, a_BlockZ, a_Seq, a_Noise, 0x5fffffff, a_OtherBlocks, 3, E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+		hei++;
+	}  // for i - 2*
+
+	// Two layers of BigO2 leaves, possibly with corners:
+	for (int i = 0; i < 1; i++)
+	{
+		PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO2, ARRAYCOUNT(BigO2), E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+		PushCornerBlocks(a_BlockX, hei, a_BlockZ, a_Seq, a_Noise, 0x5fffffff, a_OtherBlocks, 2, E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+		hei++;
+	}  // for i - 2*
+	
+	// Top plus, all leaves:
+	PushCoordBlocks(a_BlockX, hei, a_BlockZ, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE);
+	a_OtherBlocks.push_back(sSetBlock(a_BlockX, hei, a_BlockZ, E_BLOCK_LEAVES, E_META_LEAVES_JUNGLE));
+}
+
+
+
+