6 files changed, 669 insertions, 2 deletions

diff --git a/src/Generating/ComposableGenerator.cpp b/src/Generating/ComposableGenerator.cpp
index 22941dcbe..7b6234161 100644
--- a/src/Generating/ComposableGenerator.cpp
+++ b/src/Generating/ComposableGenerator.cpp
@@ -26,6 +26,7 @@
 #include "POCPieceGenerator.h"
 #include "RainbowRoadsGen.h"
 #include "Ravines.h"
+#include "TestRailsGen.h"
 #include "UnderwaterBaseGen.h"
 #include "VillageGen.h"
 
@@ -414,6 +415,10 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 		{
 			m_FinishGens.push_back(new cFinishGenSprinkleFoliage(Seed));
 		}
+		else if (NoCaseCompare(*itr, "TestRails") == 0)
+		{
+			m_FinishGens.push_back(new cTestRailsGen(Seed, 100, 1, 7, 50));
+		}
 		else if (NoCaseCompare(*itr, "Trees") == 0)
 		{
 			m_FinishGens.push_back(new cStructGenTrees(Seed, m_BiomeGen, m_HeightGen, m_CompositionGen));
diff --git a/src/Generating/GridStructGen.cpp b/src/Generating/GridStructGen.cpp
index 2931df3eb..95f8c38bc 100644
--- a/src/Generating/GridStructGen.cpp
+++ b/src/Generating/GridStructGen.cpp
@@ -88,8 +88,8 @@ void cGridStructGen::GetStructuresForChunk(int a_ChunkX, int a_ChunkZ, cStructur
 	for (cStructurePtrs::iterator itr = m_Cache.begin(), end = m_Cache.end(); itr != end;)
 	{
 		if (
-			((*itr)->m_OriginX >= MinX) && ((*itr)->m_OriginX < MaxX) &&
-			((*itr)->m_OriginZ >= MinZ) && ((*itr)->m_OriginZ < MaxZ)
+			((*itr)->m_GridX >= MinX) && ((*itr)->m_GridX < MaxX) &&
+			((*itr)->m_GridZ >= MinZ) && ((*itr)->m_GridZ < MaxZ)
 		)
 		{
 			// want
diff --git a/src/Generating/Prefabs/TestRailsPrefabs.cpp b/src/Generating/Prefabs/TestRailsPrefabs.cpp
new file mode 100644
index 000000000..3444cb1fa
--- /dev/null
+++ b/src/Generating/Prefabs/TestRailsPrefabs.cpp
@@ -0,0 +1,484 @@
+
+// TestRailsPrefabs.cpp
+
+// Defines the prefabs in the group TestRails
+
+// NOTE: This file has been generated automatically by GalExport!
+// Any manual changes will be overwritten by the next automatic export!
+
+#include "Globals.h"
+#include "TestRailsPrefabs.h"
+
+
+
+
+
+const cPrefab::sDef g_TestRailsPrefabs[] =
+{
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// ActivatorRail:
+	// The data has been exported from the gallery Plains, area index 251, ID 746, created by Aloe_vera
+	{
+		// Size:
+		7, 3, 7,  // SizeX = 7, SizeY = 3, SizeZ = 7
+
+		// Hitbox (relative to bounding box):
+		0, 0, 0,  // MinX, MinY, MinZ
+		6, 2, 6,  // MaxX, MaxY, MaxZ
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:  1: 0\n"  /* stone */
+		"b:  5: 0\n"  /* wood */
+		"c:157: 0\n"  /* activatorrail */
+		"d:157: 2\n"  /* activatorrail */
+		"e:157: 3\n"  /* activatorrail */
+		"f:157: 5\n"  /* activatorrail */
+		"g: 50: 5\n"  /* torch */
+		"h:157: 4\n"  /* activatorrail */
+		"i:157: 1\n"  /* activatorrail */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 0
+		/* z\x*   0123456 */
+		/*  0 */ "aaab..."
+		/*  1 */ "abbbbb."
+		/*  2 */ "abbb.b."
+		/*  3 */ "bbbb.bb"
+		/*  4 */ ".b...b."
+		/*  5 */ ".bbbbb."
+		/*  6 */ "...b..."
+
+		// Level 1
+		/* z\x*   0123456 */
+		/*  0 */ "......."
+		/*  1 */ ".cdbec."
+		/*  2 */ ".fg..f."
+		/*  3 */ ".b.g.b."
+		/*  4 */ ".h...h."
+		/*  5 */ ".cdbec."
+		/*  6 */ "......."
+
+		// Level 2
+		/* z\x*   0123456 */
+		/*  0 */ "......."
+		/*  1 */ "...i..."
+		/*  2 */ "......."
+		/*  3 */ ".c...c."
+		/*  4 */ "......."
+		/*  5 */ "...i..."
+		/*  6 */ ".......",
+
+		// Connectors:
+		"1: 6, 1, 3: 5\n"  /* Type 1, direction X+ */
+		"-1: 6, 1, 3: 5\n"  /* Type -1, direction X+ */
+		"1: 3, 1, 6: 3\n"  /* Type 1, direction Z+ */
+		"-1: 3, 1, 6: 3\n"  /* Type -1, direction Z+ */
+		"1: 0, 1, 3: 4\n"  /* Type 1, direction X- */
+		"-1: 0, 1, 3: 4\n"  /* Type -1, direction X- */
+		"1: 3, 1, 0: 2\n"  /* Type 1, direction Z- */
+		"-1: 3, 1, 0: 2\n"  /* Type -1, direction Z- */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotation allowed */
+
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
+
+		// MoveToGround:
+		false,
+	},  // ActivatorRail
+
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// DetectorRail:
+	// The data has been exported from the gallery Plains, area index 250, ID 745, created by Aloe_vera
+	{
+		// Size:
+		7, 3, 7,  // SizeX = 7, SizeY = 3, SizeZ = 7
+
+		// Hitbox (relative to bounding box):
+		0, 0, 0,  // MinX, MinY, MinZ
+		6, 2, 6,  // MaxX, MaxY, MaxZ
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:  1: 0\n"  /* stone */
+		"b:  5: 0\n"  /* wood */
+		"c: 28: 0\n"  /* detectorrail */
+		"d: 28: 2\n"  /* detectorrail */
+		"e: 28: 3\n"  /* detectorrail */
+		"f: 28: 5\n"  /* detectorrail */
+		"g: 50: 5\n"  /* torch */
+		"h: 28: 4\n"  /* detectorrail */
+		"i: 28: 1\n"  /* detectorrail */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 0
+		/* z\x*   0123456 */
+		/*  0 */ "aaab..."
+		/*  1 */ "abbbbb."
+		/*  2 */ "abbb.b."
+		/*  3 */ "bbbb.bb"
+		/*  4 */ ".b...b."
+		/*  5 */ ".bbbbb."
+		/*  6 */ "...b..."
+
+		// Level 1
+		/* z\x*   0123456 */
+		/*  0 */ "......."
+		/*  1 */ ".cdbec."
+		/*  2 */ ".fg..f."
+		/*  3 */ ".b.g.b."
+		/*  4 */ ".h...h."
+		/*  5 */ ".cdbec."
+		/*  6 */ "......."
+
+		// Level 2
+		/* z\x*   0123456 */
+		/*  0 */ "......."
+		/*  1 */ "...i..."
+		/*  2 */ "......."
+		/*  3 */ ".c...c."
+		/*  4 */ "......."
+		/*  5 */ "...i..."
+		/*  6 */ ".......",
+
+		// Connectors:
+		"1: 6, 1, 3: 5\n"  /* Type 1, direction X+ */
+		"-1: 6, 1, 3: 5\n"  /* Type -1, direction X+ */
+		"1: 3, 1, 0: 2\n"  /* Type 1, direction Z- */
+		"-1: 3, 1, 0: 2\n"  /* Type -1, direction Z- */
+		"1: 0, 1, 3: 4\n"  /* Type 1, direction X- */
+		"-1: 0, 1, 3: 4\n"  /* Type -1, direction X- */
+		"1: 3, 1, 6: 3\n"  /* Type 1, direction Z+ */
+		"-1: 3, 1, 6: 3\n"  /* Type -1, direction Z+ */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotation allowed */
+
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
+
+		// MoveToGround:
+		false,
+	},  // DetectorRail
+
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// PowerRail:
+	// The data has been exported from the gallery Plains, area index 248, ID 743, created by Aloe_vera
+	{
+		// Size:
+		7, 3, 7,  // SizeX = 7, SizeY = 3, SizeZ = 7
+
+		// Hitbox (relative to bounding box):
+		0, 0, 0,  // MinX, MinY, MinZ
+		6, 2, 6,  // MaxX, MaxY, MaxZ
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:  1: 0\n"  /* stone */
+		"b:  5: 0\n"  /* wood */
+		"c: 27: 0\n"  /* poweredrail */
+		"d: 27: 2\n"  /* poweredrail */
+		"e: 27: 3\n"  /* poweredrail */
+		"f: 27: 5\n"  /* poweredrail */
+		"g: 50: 5\n"  /* torch */
+		"h: 27: 4\n"  /* poweredrail */
+		"i: 27: 1\n"  /* poweredrail */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 0
+		/* z\x*   0123456 */
+		/*  0 */ "aaab..."
+		/*  1 */ "abbbbb."
+		/*  2 */ "abbb.b."
+		/*  3 */ "bbbb.bb"
+		/*  4 */ ".b...b."
+		/*  5 */ ".bbbbb."
+		/*  6 */ "...b..."
+
+		// Level 1
+		/* z\x*   0123456 */
+		/*  0 */ "......."
+		/*  1 */ ".cdbec."
+		/*  2 */ ".fg..f."
+		/*  3 */ ".b.g.b."
+		/*  4 */ ".h...h."
+		/*  5 */ ".cdbec."
+		/*  6 */ "......."
+
+		// Level 2
+		/* z\x*   0123456 */
+		/*  0 */ "......."
+		/*  1 */ "...i..."
+		/*  2 */ "......."
+		/*  3 */ ".c...c."
+		/*  4 */ "......."
+		/*  5 */ "...i..."
+		/*  6 */ ".......",
+
+		// Connectors:
+		"1: 6, 1, 3: 5\n"  /* Type 1, direction X+ */
+		"-1: 6, 1, 3: 5\n"  /* Type -1, direction X+ */
+		"1: 3, 1, 6: 3\n"  /* Type 1, direction Z+ */
+		"-1: 3, 1, 6: 3\n"  /* Type -1, direction Z+ */
+		"1: 0, 1, 3: 4\n"  /* Type 1, direction X- */
+		"-1: 0, 1, 3: 4\n"  /* Type -1, direction X- */
+		"1: 3, 1, 0: 2\n"  /* Type 1, direction Z- */
+		"-1: 3, 1, 0: 2\n"  /* Type -1, direction Z- */
+		"1: 6, 1, 3: 5\n"  /* Type 1, direction X+ */
+		"-1: 6, 1, 3: 5\n"  /* Type -1, direction X+ */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotation allowed */
+
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
+
+		// MoveToGround:
+		false,
+	},  // PowerRail
+
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// RegularRail:
+	// The data has been exported from the gallery Plains, area index 247, ID 742, created by Aloe_vera
+	{
+		// Size:
+		7, 3, 7,  // SizeX = 7, SizeY = 3, SizeZ = 7
+
+		// Hitbox (relative to bounding box):
+		0, 0, 0,  // MinX, MinY, MinZ
+		6, 2, 6,  // MaxX, MaxY, MaxZ
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:  1: 0\n"  /* stone */
+		"b:  5: 0\n"  /* wood */
+		"c: 66: 6\n"  /* tracks */
+		"d: 66: 2\n"  /* tracks */
+		"e: 66: 3\n"  /* tracks */
+		"f: 66: 7\n"  /* tracks */
+		"g: 66: 5\n"  /* tracks */
+		"h: 50: 5\n"  /* torch */
+		"i: 66: 4\n"  /* tracks */
+		"j: 66: 9\n"  /* tracks */
+		"k: 66: 8\n"  /* tracks */
+		"l: 66: 1\n"  /* tracks */
+		"m: 19: 0\n"  /* sponge */
+		"n: 66: 0\n"  /* tracks */,
+
+		// Block data:
+		// Level 0
+		/* z\x*   0123456 */
+		/*  0 */ "aaab..."
+		/*  1 */ "abbbbb."
+		/*  2 */ "abbb.b."
+		/*  3 */ "bbbb.bb"
+		/*  4 */ ".b...b."
+		/*  5 */ ".bbbbb."
+		/*  6 */ "...b..."
+
+		// Level 1
+		/* z\x*   0123456 */
+		/*  0 */ "......."
+		/*  1 */ ".cdbef."
+		/*  2 */ ".gh..g."
+		/*  3 */ ".b.h.b."
+		/*  4 */ ".i...i."
+		/*  5 */ ".jdbek."
+		/*  6 */ "......."
+
+		// Level 2
+		/* z\x*   0123456 */
+		/*  0 */ "......."
+		/*  1 */ "...l..."
+		/*  2 */ "......."
+		/*  3 */ ".n...n."
+		/*  4 */ "......."
+		/*  5 */ "...l..."
+		/*  6 */ ".......",
+
+		// Connectors:
+		"1: 6, 1, 3: 5\n"  /* Type 1, direction X+ */
+		"-1: 6, 1, 3: 5\n"  /* Type -1, direction X+ */
+		"1: 3, 1, 6: 3\n"  /* Type 1, direction Z+ */
+		"-1: 3, 1, 6: 3\n"  /* Type -1, direction Z+ */
+		"1: 0, 1, 3: 4\n"  /* Type 1, direction X- */
+		"-1: 0, 1, 3: 4\n"  /* Type -1, direction X- */
+		"1: 3, 1, 0: 2\n"  /* Type 1, direction Z- */
+		"-1: 3, 1, 0: 2\n"  /* Type -1, direction Z- */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotation allowed */
+
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
+
+		// MoveToGround:
+		false,
+	},  // RegularRail
+};  // g_TestRailsPrefabs
+
+
+
+
+
+
+const cPrefab::sDef g_TestRailsStartingPrefabs[] =
+{
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// CentralPiece:
+	// The data has been exported from the gallery Plains, area index 249, ID 744, created by Aloe_vera
+	{
+		// Size:
+		6, 3, 6,  // SizeX = 6, SizeY = 3, SizeZ = 6
+
+		// Hitbox (relative to bounding box):
+		0, 0, 0,  // MinX, MinY, MinZ
+		5, 2, 5,  // MaxX, MaxY, MaxZ
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:  1: 0\n"  /* stone */
+		"b:  5: 0\n"  /* wood */
+		"c: 66: 6\n"  /* tracks */
+		"d: 66: 2\n"  /* tracks */
+		"e: 66: 3\n"  /* tracks */
+		"f: 66: 7\n"  /* tracks */
+		"g: 66: 5\n"  /* tracks */
+		"h: 50: 5\n"  /* torch */
+		"i: 66: 4\n"  /* tracks */
+		"j: 66: 9\n"  /* tracks */
+		"k: 66: 8\n"  /* tracks */
+		"l: 66: 1\n"  /* tracks */
+		"m: 19: 0\n"  /* sponge */
+		"n: 66: 0\n"  /* tracks */,
+
+		// Block data:
+		// Level 0
+		/* z\x*   012345 */
+		/*  0 */ "aaab.."
+		/*  1 */ "abbbbb"
+		/*  2 */ "abbb.b"
+		/*  3 */ "bbbb.b"
+		/*  4 */ ".b...b"
+		/*  5 */ ".bbbbb"
+
+		// Level 1
+		/* z\x*   012345 */
+		/*  0 */ "......"
+		/*  1 */ ".cdbef"
+		/*  2 */ ".gh..g"
+		/*  3 */ ".b.h.b"
+		/*  4 */ ".i...i"
+		/*  5 */ ".jdbek"
+
+		// Level 2
+		/* z\x*   012345 */
+		/*  0 */ "......"
+		/*  1 */ "...l.."
+		/*  2 */ "......"
+		/*  3 */ ".n...n"
+		/*  4 */ "......"
+		/*  5 */ "...l..",
+
+		// Connectors:
+		"1: 3, 1, 6: 3\n"  /* Type 1, direction Z+ */
+		"1: 0, 1, 3: 4\n"  /* Type 1, direction X- */
+		"-1: 0, 1, 3: 4\n"  /* Type -1, direction X- */
+		"-1: 3, 1, 6: 3\n"  /* Type -1, direction Z+ */
+		"1: 6, 1, 3: 5\n"  /* Type 1, direction X+ */
+		"-1: 6, 1, 3: 5\n"  /* Type -1, direction X+ */
+		"1: 3, 1, 0: 2\n"  /* Type 1, direction Z- */
+		"-1: 3, 1, 0: 2\n"  /* Type -1, direction Z- */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotation allowed */
+
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		true,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
+
+		// MoveToGround:
+		false,
+	},  // CentralPiece
+};
+
+
+
+
+
+// The prefab counts:
+
+const size_t g_TestRailsPrefabsCount = ARRAYCOUNT(g_TestRailsPrefabs);
+
+const size_t g_TestRailsStartingPrefabsCount = ARRAYCOUNT(g_TestRailsStartingPrefabs);
+
diff --git a/src/Generating/Prefabs/TestRailsPrefabs.h b/src/Generating/Prefabs/TestRailsPrefabs.h
new file mode 100644
index 000000000..24b84de74
--- /dev/null
+++ b/src/Generating/Prefabs/TestRailsPrefabs.h
@@ -0,0 +1,15 @@
+
+// TestRailsPrefabs.h
+
+// Declares the prefabs in the group TestRails
+
+#include "../Prefab.h"
+
+
+
+
+
+extern const cPrefab::sDef g_TestRailsPrefabs[];
+extern const cPrefab::sDef g_TestRailsStartingPrefabs[];
+extern const size_t g_TestRailsPrefabsCount;
+extern const size_t g_TestRailsStartingPrefabsCount;
diff --git a/src/Generating/TestRailsGen.cpp b/src/Generating/TestRailsGen.cpp
new file mode 100644
index 000000000..c40c1a9b6
--- /dev/null
+++ b/src/Generating/TestRailsGen.cpp
@@ -0,0 +1,116 @@
+
+// TestRailsGen.cpp
+
+// Implements the cTestRailsGen class representing the testing rails generator
+
+#include "Globals.h"
+#include "TestRailsGen.h"
+#include "Prefabs/TestRailsPrefabs.h"
+#include "PieceGenerator.h"
+
+
+
+
+
+static cPrefabPiecePool g_TestRails(g_TestRailsPrefabs, g_TestRailsPrefabsCount, g_TestRailsStartingPrefabs, g_TestRailsStartingPrefabsCount);
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cTestRailsGen::cTestRails:
+
+class cTestRailsGen::cTestRails :
+	public cGridStructGen::cStructure
+{
+	typedef cGridStructGen::cStructure super;
+	
+public:
+	cTestRails(
+		int a_Seed,
+		int a_GridX, int a_GridZ,
+		int a_OriginX, int a_OriginZ,
+		int a_MaxDepth,
+		int a_MaxSize
+	) :
+		super(a_GridX, a_GridZ, a_OriginX, a_OriginZ),
+		m_Seed(a_Seed),
+		m_Noise(a_Seed),
+		m_MaxSize(a_MaxSize),
+		m_Borders(a_OriginX - a_MaxSize, 0, a_OriginZ - a_MaxSize, a_OriginX + a_MaxSize, 255, a_OriginZ + a_MaxSize)
+	{
+		// Generate the pieces for this test:
+		cBFSPieceGenerator pg(g_TestRails, a_Seed);
+		pg.PlacePieces(a_OriginX, 150, a_OriginZ, a_MaxDepth, m_Pieces);
+		if (m_Pieces.empty())
+		{
+			return;
+		}
+	}
+	
+	~cTestRails()
+	{
+		cPieceGenerator::FreePieces(m_Pieces);
+	}
+	
+protected:
+	/** Seed for the random functions */
+	int m_Seed;
+	
+	/** The noise used as a pseudo-random generator */
+	cNoise m_Noise;
+	
+	/** Maximum size, in X/Z blocks, of the structure (radius from the origin) */
+	int m_MaxSize;
+	
+	/** Borders of the structure - no item may reach out of this cuboid. */
+	cCuboid m_Borders;
+	
+	/** The rails pieces, placed by the generator. */
+	cPlacedPieces m_Pieces;
+	
+	
+	// cGridStructGen::cStructure overrides:
+	virtual void DrawIntoChunk(cChunkDesc & a_Chunk) override
+	{
+		for (cPlacedPieces::iterator itr = m_Pieces.begin(), end = m_Pieces.end(); itr != end; ++itr)
+		{
+			cPrefab & Prefab = (cPrefab &)((*itr)->GetPiece());
+			Prefab.Draw(a_Chunk, *itr);
+		}  // for itr - m_PlacedPieces[]
+	}
+} ;
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cTestRailsGen:
+
+
+
+
+
+cTestRailsGen::cTestRailsGen(int a_Seed, int a_GridSize, int a_MaxOffset, int a_MaxDepth, int a_MaxSize) :
+	super(a_Seed, a_GridSize, a_GridSize, a_MaxOffset, a_MaxOffset, a_MaxSize, a_MaxSize, 100),
+	m_Noise(a_Seed + 1000),
+	m_MaxDepth(a_MaxDepth),
+	m_MaxSize(a_MaxSize)
+{
+}
+
+
+
+
+
+cGridStructGen::cStructurePtr cTestRailsGen::CreateStructure(int a_GridX, int a_GridZ, int a_OriginX, int a_OriginZ)
+{
+	// Create a base based on the chosen prefabs:
+	return cStructurePtr(new cTestRails(m_Seed, a_GridX, a_GridZ, a_OriginX, a_OriginZ, m_MaxDepth, m_MaxSize));
+}
+
+
+
+
diff --git a/src/Generating/TestRailsGen.h b/src/Generating/TestRailsGen.h
new file mode 100644
index 000000000..5b0ce95f4
--- /dev/null
+++ b/src/Generating/TestRailsGen.h
@@ -0,0 +1,47 @@
+
+// TestRailsGen.h
+
+// Declares the cTestRailsGen class representing the testing rails generator
+
+
+
+
+
+#pragma once
+
+#include "GridStructGen.h"
+#include "PrefabPiecePool.h"
+
+
+
+
+
+class cTestRailsGen :
+	public cGridStructGen
+{
+	typedef cGridStructGen super;
+	
+public:
+	cTestRailsGen(int a_Seed, int a_GridSize, int a_MaxOffset, int a_MaxDepth, int a_MaxSize);
+
+protected:
+	class cTestRails;  // fwd: TestRailsGen.cpp
+
+
+	/** The noise used for generating random numbers */
+	cNoise m_Noise;
+	
+	/** Maximum depth of the generator tree*/
+	int m_MaxDepth;
+	
+	/** Maximum size, in X/Z blocks, of the base (radius from the origin) */
+	int m_MaxSize;
+
+
+	// cGridStructGen overrides:
+	virtual cStructurePtr CreateStructure(int a_GridX, int a_GridZ, int a_OriginX, int a_OriginZ) override;
+} ;
+
+
+
+