18 files changed, 2738 insertions, 0 deletions

diff --git a/Tools/QtBiomeVisualiser/.gitignore b/Tools/QtBiomeVisualiser/.gitignore
new file mode 100644
index 000000000..c1b62a8a7
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/.gitignore
@@ -0,0 +1,2 @@
+*.pro.user
+*.pro.user.*
diff --git a/Tools/QtBiomeVisualiser/BiomeView.cpp b/Tools/QtBiomeVisualiser/BiomeView.cpp
new file mode 100644
index 000000000..b44b935d7
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/BiomeView.cpp
@@ -0,0 +1,414 @@
+#include "Globals.h"
+#include "BiomeView.h"
+#include "QtChunk.h"
+#include <QPainter>
+#include <QResizeEvent>
+
+
+
+
+
+static const int DELTA_STEP = 120;  // The normal per-notch wheel delta
+
+
+
+
+
+BiomeView::BiomeView(QWidget * parent) :
+	super(parent),
+	m_X(0),
+	m_Z(0),
+	m_Zoom(1),
+	m_IsMouseDragging(false),
+	m_MouseWheelDelta(0)
+{
+	// Create the image used for undefined chunks:
+	int offset = 0;
+	for (int y = 0; y < 16; y++)
+	{
+		for (int x = 0; x < 16; x++)
+		{
+			uchar color = (((x & 8) ^ (y & 8)) == 0) ? 0x44 : 0x88;
+			m_EmptyChunkImage[offset++] = color;
+			m_EmptyChunkImage[offset++] = color;
+			m_EmptyChunkImage[offset++] = color;
+			m_EmptyChunkImage[offset++] = 0xff;
+		}
+	}
+
+	// Create the startup image:
+	redraw();
+
+	// Add a chunk-update callback mechanism:
+	connect(&m_Cache, SIGNAL(chunkAvailable(int, int)), this, SLOT(chunkAvailable(int, int)));
+
+	// Allow mouse and keyboard interaction:
+	setFocusPolicy(Qt::StrongFocus);
+	setMouseTracking(true);
+}
+
+
+
+
+QSize BiomeView::minimumSizeHint() const
+{
+	return QSize(300, 300);
+}
+
+
+
+
+
+QSize BiomeView::sizeHint() const
+{
+	return QSize(800, 600);
+}
+
+
+
+
+
+void BiomeView::setChunkSource(std::shared_ptr<ChunkSource> a_ChunkSource)
+{
+	// Replace the source in the cache:
+	m_Cache.setChunkSource(a_ChunkSource);
+
+	// Redraw with the new source:
+	redraw();
+}
+
+
+
+
+
+void BiomeView::setPosition(int a_BlockX, int a_BlockZ)
+{
+	m_X = a_BlockX;
+	m_Z = a_BlockZ;
+	redraw();
+}
+
+
+
+
+
+void BiomeView::setZoomLevel(double a_ZoomLevel)
+{
+	m_Zoom = a_ZoomLevel;
+	redraw();
+}
+
+
+
+
+
+void BiomeView::redraw()
+{
+	if (!hasData())
+	{
+		// No data means no image is displayed, no need to compose:
+		update();
+		return;
+	}
+
+	int chunksize = 16 * m_Zoom;
+
+	// first find the center block position
+	int centerchunkx = floor(m_X / 16);
+	int centerchunkz = floor(m_Z / 16);
+	// and the center of the screen
+	int centerx = m_Image.width()  / 2;
+	int centery = m_Image.height() / 2;
+	// and align for panning
+	centerx -= (m_X - centerchunkx * 16) * m_Zoom;
+	centery -= (m_Z - centerchunkz * 16) * m_Zoom;
+	// now calculate the topleft block on the screen
+	int startx = centerchunkx - centerx / chunksize - 1;
+	int startz = centerchunkz - centery / chunksize - 1;
+	// and the dimensions of the screen in blocks
+	int blockswide = m_Image.width()  / chunksize + 3;
+	int blockstall = m_Image.height() / chunksize + 3;
+
+	for (int z = startz; z < startz + blockstall; z++)
+	{
+		for (int x = startx; x < startx + blockswide; x++)
+		{
+			drawChunk(x, z);
+		}
+	}
+	update();
+}
+
+
+
+
+
+void BiomeView::chunkAvailable(int a_ChunkX, int a_ChunkZ)
+{
+	drawChunk(a_ChunkX, a_ChunkZ);
+	update();
+}
+
+
+
+
+
+void BiomeView::reload()
+{
+	if (!hasData())
+	{
+		return;
+	}
+	m_Cache.reload();
+
+	redraw();
+}
+
+
+
+
+
+void BiomeView::drawChunk(int a_ChunkX, int a_ChunkZ)
+{
+	if (!hasData())
+	{
+		return;
+	}
+
+	//fetch the chunk:
+	ChunkPtr chunk = m_Cache.fetch(a_ChunkX, a_ChunkZ);
+
+	// Figure out where on the screen this chunk should be drawn:
+	// first find the center chunk
+	int centerchunkx = floor(m_X / 16);
+	int centerchunkz = floor(m_Z / 16);
+	// and the center chunk screen coordinates
+	int centerx = m_Image.width()  / 2;
+	int centery = m_Image.height() / 2;
+	// which need to be shifted to account for panning inside that chunk
+	centerx -= (m_X - centerchunkx * 16) * m_Zoom;
+	centery -= (m_Z - centerchunkz * 16) * m_Zoom;
+	// centerx,y now points to the top left corner of the center chunk
+	// so now calculate our x,y in relation
+	double chunksize = 16 * m_Zoom;
+	centerx += (a_ChunkX - centerchunkx) * chunksize;
+	centery += (a_ChunkZ - centerchunkz) * chunksize;
+
+	int srcoffset = 0;
+	uchar * bits = m_Image.bits();
+	int imgstride = m_Image.bytesPerLine();
+
+	int skipx = 0,skipy = 0;
+	int blockwidth = chunksize, blockheight = chunksize;
+	// now if we're off the screen we need to crop
+	if (centerx < 0)
+	{
+		skipx = -centerx;
+		centerx = 0;
+	}
+	if (centery < 0)
+	{
+		skipy = -centery;
+		centery = 0;
+	}
+	// or the other side, we need to trim
+	if (centerx + blockwidth > m_Image.width())
+	{
+		blockwidth = m_Image.width() - centerx;
+	}
+	if (centery + blockheight > m_Image.height())
+	{
+		blockheight = m_Image.height() - centery;
+	}
+	if ((blockwidth <= 0) || (skipx >= blockwidth))
+	{
+		return;
+	}
+	int imgoffset = centerx * 4 + centery * imgstride;
+
+	// If the chunk is valid, use its data; otherwise use the empty placeholder:
+	const uchar * src = m_EmptyChunkImage;
+	if (chunk.get() != nullptr)
+	{
+		src = chunk->getImage();
+	}
+
+	// Blit or scale-blit the image:
+	for (int z = skipy; z < blockheight; z++, imgoffset += imgstride)
+	{
+		srcoffset = floor((double)z / m_Zoom) * 16 * 4;
+		if (m_Zoom == 1.0)
+		{
+			memcpy(bits + imgoffset, src + srcoffset + skipx * 4, (blockwidth - skipx) * 4);
+		}
+		else
+		{
+			int xofs = 0;
+			for (int x = skipx; x < blockwidth; x++, xofs +=4)
+			{
+				memcpy(bits + imgoffset + xofs, src + srcoffset + (int)floor((double)x / m_Zoom) * 4, 4);
+			}
+		}
+	}
+}
+
+
+
+
+
+void BiomeView::resizeEvent(QResizeEvent * a_Event)
+{
+	m_Image = QImage(a_Event->size(), QImage::Format_RGB32);
+	redraw();
+}
+
+
+
+
+
+void BiomeView::paintEvent(QPaintEvent * a_Event)
+{
+	QPainter p(this);
+	if (hasData())
+	{
+		p.drawImage(QPoint(0, 0), m_Image);
+	}
+	else
+	{
+		p.drawText(a_Event->rect(), Qt::AlignCenter, "No chunk source selected");
+	}
+	p.end();
+}
+
+
+
+
+
+void BiomeView::mousePressEvent(QMouseEvent * a_Event)
+{
+	m_LastX = a_Event->x();
+	m_LastY = a_Event->y();
+	m_IsMouseDragging = true;
+}
+
+
+
+
+
+void BiomeView::mouseMoveEvent(QMouseEvent * a_Event)
+{
+	// If there's no data displayed, bail out:
+	if (!hasData())
+	{
+		return;
+	}
+
+	if (m_IsMouseDragging)
+	{
+		// The user is dragging the mouse, move the view around:
+		m_X += (m_LastX - a_Event->x()) / m_Zoom;
+		m_Z += (m_LastY - a_Event->y()) / m_Zoom;
+		m_LastX = a_Event->x();
+		m_LastY = a_Event->y();
+		redraw();
+		return;
+	}
+
+	// Update the status bar info text:
+	int blockX = floor((a_Event->x() - width()  / 2) / m_Zoom + m_X);
+	int blockZ = floor((a_Event->y() - height() / 2) / m_Zoom + m_Z);
+	int chunkX, chunkZ;
+	int relX = blockX, relY, relZ = blockZ;
+	cChunkDef::AbsoluteToRelative(relX, relY, relZ, chunkX, chunkZ);
+	auto chunk = m_Cache.fetch(chunkX, chunkZ);
+	int biome = (chunk.get() != nullptr) ? chunk->getBiome(relX, relZ) : biInvalidBiome;
+	emit hoverChanged(blockX, blockZ, biome);
+}
+
+
+
+
+
+void BiomeView::mouseReleaseEvent(QMouseEvent *)
+{
+	m_IsMouseDragging = false;
+}
+
+
+
+
+
+void BiomeView::wheelEvent(QWheelEvent * a_Event)
+{
+	m_MouseWheelDelta += a_Event->delta();
+	while (m_MouseWheelDelta >= DELTA_STEP)
+	{
+		emit wheelUp();
+		m_MouseWheelDelta -= DELTA_STEP;
+	}
+	while (m_MouseWheelDelta <= -DELTA_STEP)
+	{
+		emit wheelDown();
+		m_MouseWheelDelta += DELTA_STEP;
+	}
+}
+
+
+
+
+
+void BiomeView::keyPressEvent(QKeyEvent * a_Event)
+{
+	switch (a_Event->key())
+	{
+		case Qt::Key_Up:
+		case Qt::Key_W:
+		{
+			m_Z -= 10.0 / m_Zoom;
+			redraw();
+			break;
+		}
+
+		case Qt::Key_Down:
+		case Qt::Key_S:
+		{
+			m_Z += 10.0 / m_Zoom;
+			redraw();
+			break;
+		}
+
+		case Qt::Key_Left:
+		case Qt::Key_A:
+		{
+			m_X -= 10.0 / m_Zoom;
+			redraw();
+			break;
+		}
+
+		case Qt::Key_Right:
+		case Qt::Key_D:
+		{
+			m_X += 10.0 / m_Zoom;
+			redraw();
+			break;
+		}
+
+		case Qt::Key_PageUp:
+		case Qt::Key_Q:
+		{
+			emit increaseZoom();
+			break;
+		}
+
+		case Qt::Key_PageDown:
+		case Qt::Key_E:
+		{
+			emit decreaseZoom();
+			break;
+		}
+	}
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/BiomeView.h b/Tools/QtBiomeVisualiser/BiomeView.h
new file mode 100644
index 000000000..40d8b96ae
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/BiomeView.h
@@ -0,0 +1,114 @@
+#pragma once
+
+#include <QWidget>
+#include <memory>
+#include "ChunkCache.h"
+#include "ChunkSource.h"
+
+
+
+
+
+class BiomeView :
+	public QWidget
+{
+	typedef QWidget super;
+	Q_OBJECT
+
+public:
+	explicit BiomeView(QWidget * parent = NULL);
+
+	QSize minimumSizeHint() const;
+	QSize sizeHint() const;
+
+	/** Replaces the chunk source used by the biome view to get the chunk biome data.
+	The entire view is then invalidated and regenerated. */
+	void setChunkSource(std::shared_ptr<ChunkSource> a_ChunkSource);
+
+	/** Sets the position of the central pixel of the map to the specified point and redraws the view. */
+	void setPosition(int a_BlockX, int a_BlockZ);
+
+	/** Sets the zoom level to the specified value and redraws the view. */
+	void setZoomLevel(double a_ZoomLevel);
+
+signals:
+	/** Signalled when the user uses the wheel to scroll upwards. */
+	void wheelUp();
+
+	/** Signalled when the user uses the wheel to scroll downwards. */
+	void wheelDown();
+
+	/** Signalled when the user presses a key to increase zoom. */
+	void increaseZoom();
+
+	/** Signalled when the user presses a key to decrease zoom. */
+	void decreaseZoom();
+
+	/** Emitted when the user moves the mouse, to reflect the current block under the cursor. */
+	void hoverChanged(int a_BlockX, int a_BlockZ, int a_Biome);
+
+public slots:
+	/** Redraw the entire widget area. */
+	void redraw();
+
+	/** A specified chunk has become available, redraw it. */
+	void chunkAvailable(int a_ChunkX, int a_ChunkZ);
+
+	/** Reloads the current chunk source and redraws the entire workspace. */
+	void reload();
+
+protected:
+	double m_X, m_Z;
+	double m_Zoom;
+
+	/** Cache for the loaded chunk data. */
+	ChunkCache m_Cache;
+
+	/** The entire view's contents in an offscreen image. */
+	QImage m_Image;
+
+	/** Coords of the mouse for the previous position, used while dragging. */
+	int m_LastX, m_LastY;
+
+	/** Set to true when the user has a mouse button depressed, and is dragging the view. */
+	bool m_IsMouseDragging;
+
+	/** Accumulator for the mouse wheel's delta. When the accumulator hits a threshold, the view zooms. */
+	int m_MouseWheelDelta;
+
+	/** Data used for rendering a chunk that hasn't been loaded yet */
+	uchar m_EmptyChunkImage[16 * 16 * 4];
+
+
+	/** Draws the specified chunk into m_Image */
+	void drawChunk(int a_ChunkX, int a_ChunkZ);
+
+	/** Returns true iff the biome view has been initialized to contain proper biome data. */
+	bool hasData(void) const { return m_Cache.hasData(); }
+
+	/** Called when the widget is resized */
+	virtual void resizeEvent(QResizeEvent *) override;
+
+	/** Paints the entire widget */
+	virtual void paintEvent(QPaintEvent *) override;
+
+	/** Called when the user presses any mouse button. */
+	virtual void mousePressEvent(QMouseEvent * a_Event);
+
+	/** Called when the user moves the mouse. */
+	virtual void mouseMoveEvent(QMouseEvent * a_Event);
+
+	/** Called when the user releases a previously held mouse button. */
+	virtual void mouseReleaseEvent(QMouseEvent * a_Event) override;
+
+	/** Called when the user rotates the mouse wheel. */
+	virtual void wheelEvent(QWheelEvent * a_Event) override;
+
+	/** Called when the user presses a key. */
+	virtual void keyPressEvent(QKeyEvent * a_Event) override;
+};
+
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/ChunkCache.cpp b/Tools/QtBiomeVisualiser/ChunkCache.cpp
new file mode 100644
index 000000000..05c267d30
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/ChunkCache.cpp
@@ -0,0 +1,126 @@
+#include "Globals.h"
+#include "ChunkCache.h"
+#include <QMutexLocker>
+#include <QThreadPool>
+#include "ChunkSource.h"
+#include "ChunkLoader.h"
+
+
+
+
+
+ChunkCache::ChunkCache(QObject * parent) :
+	super(parent)
+{
+	m_Cache.setMaxCost(1024 * 1024 * 1024);  // 1 GiB of memory for the cache
+}
+
+
+
+
+
+ChunkPtr ChunkCache::fetch(int a_ChunkX, int a_ChunkZ)
+{
+	// Retrieve from the cache:
+	quint32 hash = getChunkHash(a_ChunkX, a_ChunkZ);
+	ChunkPtr * res;
+	{
+		QMutexLocker lock(&m_Mtx);
+		res = m_Cache[hash];
+		// If succesful and chunk loaded, return the retrieved value:
+		if ((res != nullptr) && (*res)->isValid())
+		{
+			return *res;
+		}
+	}
+
+	// If the chunk is in cache but not valid, it means it has been already queued for rendering, do nothing now:
+	if (res != nullptr)
+	{
+		return ChunkPtr(nullptr);
+	}
+
+	// There's no such item in the cache, create it now:
+	res = new ChunkPtr(new Chunk);
+	if (res == nullptr)
+	{
+		return ChunkPtr(nullptr);
+	}
+	{
+		QMutexLocker lock(&m_Mtx);
+		m_Cache.insert(hash, res, sizeof(Chunk));
+	}
+
+	// Queue the chunk for rendering:
+	queueChunkRender(a_ChunkX, a_ChunkZ, *res);
+
+	// Return failure, the chunk is not yet rendered:
+	return ChunkPtr(nullptr);
+}
+
+
+
+
+
+void ChunkCache::setChunkSource(std::shared_ptr<ChunkSource> a_ChunkSource)
+{
+	// Replace the chunk source:
+	m_ChunkSource = a_ChunkSource;
+
+	// Clear the cache:
+	QMutexLocker lock(&m_Mtx);
+	m_Cache.clear();
+}
+
+
+
+
+
+void ChunkCache::reload()
+{
+	assert(m_ChunkSource.get() != nullptr);
+
+	// Reload the chunk source:
+	m_ChunkSource->reload();
+
+	// Clear the cache:
+	QMutexLocker lock(&m_Mtx);
+	m_Cache.clear();
+}
+
+
+
+
+
+void ChunkCache::gotChunk(int a_ChunkX, int a_ChunkZ)
+{
+	emit chunkAvailable(a_ChunkX, a_ChunkZ);
+}
+
+
+
+
+
+quint32 ChunkCache::getChunkHash(int a_ChunkX, int a_ChunkZ)
+{
+	// Simply join the two coords into a single int
+	// The coords will never be larger than 16-bits, so we can do this safely
+	return (((static_cast<quint32>(a_ChunkX) & 0xffff) << 16) | (static_cast<quint32>(a_ChunkZ) & 0xffff));
+}
+
+
+
+
+
+void ChunkCache::queueChunkRender(int a_ChunkX, int a_ChunkZ, ChunkPtr & a_Chunk)
+{
+	// Create a new loader task:
+	ChunkLoader * loader = new ChunkLoader(a_ChunkX, a_ChunkZ, a_Chunk, m_ChunkSource);
+	connect(loader, SIGNAL(loaded(int, int)), this, SLOT(gotChunk(int, int)));
+
+	QThreadPool::globalInstance()->start(loader);
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/ChunkCache.h b/Tools/QtBiomeVisualiser/ChunkCache.h
new file mode 100644
index 000000000..8d198f02f
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/ChunkCache.h
@@ -0,0 +1,72 @@
+#pragma once
+
+#include <QObject>
+#include <QCache>
+#include <QMutex>
+#include <memory>
+
+
+
+
+
+class Chunk;
+typedef std::shared_ptr<Chunk> ChunkPtr;
+
+class ChunkSource;
+
+
+
+
+
+/** Caches chunk data for reuse */
+class ChunkCache :
+	public QObject
+{
+	typedef QObject super;
+	Q_OBJECT
+
+public:
+	explicit ChunkCache(QObject * parent = NULL);
+
+	/** Retrieves the specified chunk from the cache.
+	Only returns valid chunks; if the chunk is invalid, queues it for rendering and returns an empty ptr. */
+	ChunkPtr fetch(int a_ChunkX, int a_ChunkZ);
+
+	/** Replaces the chunk source used by the biome view to get the chunk biome data.
+	The cache is then invalidated. */
+	void setChunkSource(std::shared_ptr<ChunkSource> a_ChunkSource);
+
+	/** Returns true iff the chunk source has been initialized. */
+	bool hasData() const { return (m_ChunkSource.get() != nullptr); }
+
+	/** Reloads the current chunk source. */
+	void reload();
+
+signals:
+	void chunkAvailable(int a_ChunkX, int a_ChunkZ);
+
+protected slots:
+	void gotChunk(int a_ChunkX, int a_ChunkZ);
+
+protected:
+	/** The cache of the chunks */
+	QCache<quint32, ChunkPtr> m_Cache;
+
+	/** Locks te cache against multithreaded access */
+	QMutex m_Mtx;
+
+	/** The source used to get the biome data. */
+	std::shared_ptr<ChunkSource> m_ChunkSource;
+
+
+	/** Returns the hash used by the chunk in the cache */
+	quint32 getChunkHash(int a_ChunkX, int a_ChunkZ);
+
+	/** Queues the specified chunk for rendering by m_ChunkSource. */
+	void queueChunkRender(int a_ChunkX, int a_ChunkZ, ChunkPtr & a_Chunk);
+};
+
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/ChunkLoader.cpp b/Tools/QtBiomeVisualiser/ChunkLoader.cpp
new file mode 100644
index 000000000..3d0123b23
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/ChunkLoader.cpp
@@ -0,0 +1,29 @@
+#include "Globals.h"
+#include "ChunkLoader.h"
+#include "ChunkSource.h"
+
+
+
+
+
+ChunkLoader::ChunkLoader(int a_ChunkX, int a_ChunkZ, ChunkPtr a_Chunk, ChunkSourcePtr a_ChunkSource) :
+	m_ChunkX(a_ChunkX),
+	m_ChunkZ(a_ChunkZ),
+	m_Chunk(a_Chunk),
+	m_ChunkSource(a_ChunkSource)
+{
+}
+
+
+
+
+
+void ChunkLoader::run()
+{
+	m_ChunkSource->getChunkBiomes(m_ChunkX, m_ChunkZ, m_Chunk);
+	emit loaded(m_ChunkX, m_ChunkZ);
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/ChunkLoader.h b/Tools/QtBiomeVisualiser/ChunkLoader.h
new file mode 100644
index 000000000..4d026a45e
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/ChunkLoader.h
@@ -0,0 +1,45 @@
+#pragma once
+
+#include <QObject>
+#include <QRunnable>
+#include <memory>
+
+
+
+
+// fwd:
+class Chunk;
+typedef std::shared_ptr<Chunk> ChunkPtr;
+
+class ChunkSource;
+typedef std::shared_ptr<ChunkSource> ChunkSourcePtr;
+
+
+
+
+
+class ChunkLoader :
+	public QObject,
+	public QRunnable
+{
+	Q_OBJECT
+
+public:
+	ChunkLoader(int a_ChunkX, int a_ChunkZ, ChunkPtr a_Chunk, ChunkSourcePtr a_ChunkSource);
+	virtual ~ChunkLoader() {}
+
+signals:
+	void loaded(int a_ChunkX, int a_ChunkZ);
+
+protected:
+	virtual void run() override;
+
+private:
+	int m_ChunkX, m_ChunkZ;
+	ChunkPtr m_Chunk;
+	ChunkSourcePtr m_ChunkSource;
+};
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/ChunkSource.cpp b/Tools/QtBiomeVisualiser/ChunkSource.cpp
new file mode 100644
index 000000000..e5cd7a75a
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/ChunkSource.cpp
@@ -0,0 +1,284 @@
+#include "Globals.h"
+#include "ChunkSource.h"
+#include <QThread>
+#include "src/Generating/BioGen.h"
+#include "src/StringCompression.h"
+#include "src/WorldStorage/FastNBT.h"
+#include "inifile/iniFile.h"
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// BioGenSource:
+
+BioGenSource::BioGenSource(cIniFilePtr a_IniFile) :
+	m_IniFile(a_IniFile),
+	m_Mtx(QMutex::Recursive)
+{
+	reload();
+}
+
+
+
+
+
+void BioGenSource::getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk)
+{
+	cChunkDef::BiomeMap biomes;
+	{
+		QMutexLocker lock(&m_Mtx);
+		m_BiomeGen->GenBiomes(a_ChunkX, a_ChunkZ, biomes);
+	}
+	a_DestChunk->setBiomes(biomes);
+}
+
+
+
+
+
+void BioGenSource::reload()
+{
+	int seed = m_IniFile->GetValueSetI("Seed", "Seed", 0);
+	bool unused = false;
+	QMutexLocker lock(&m_Mtx);
+	m_BiomeGen.reset(cBiomeGen::CreateBiomeGen(*m_IniFile, seed, unused));
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// AnvilSource::AnvilFile
+
+class AnvilSource::AnvilFile
+{
+public:
+	/** Coordinates of the region file. */
+	int m_RegionX, m_RegionZ;
+
+	/** True iff the file contains proper data. */
+	bool m_IsValid;
+
+
+
+	/** Creates a new instance with the specified region coords. Reads the file header. */
+	AnvilFile(int a_RegionX, int a_RegionZ, const AString & a_WorldPath) :
+		m_RegionX(a_RegionX),
+		m_RegionZ(a_RegionZ),
+		m_IsValid(false)
+	{
+		readFile(Printf("%s/r.%d.%d.mca", a_WorldPath.c_str(), a_RegionX, a_RegionZ));
+	}
+
+
+
+	/** Returns the compressed data of the specified chunk.
+	Returns an empty string when chunk not present. */
+	AString getChunkData(int a_ChunkX, int a_ChunkZ)
+	{
+		if (!m_IsValid)
+		{
+			return "";
+		}
+
+		// Translate to local coords:
+		int RelChunkX = a_ChunkX - m_RegionX * 32;
+		int RelChunkZ = a_ChunkZ - m_RegionZ * 32;
+		ASSERT((RelChunkX >= 0) && (RelChunkX < 32));
+		ASSERT((RelChunkZ >= 0) && (RelChunkZ < 32));
+
+		// Get the chunk data location:
+		UInt32 chunkOffset = m_Header[RelChunkX + 32 * RelChunkZ] >> 8;
+		UInt32 numChunkSectors = m_Header[RelChunkX + 32 * RelChunkZ] & 0xff;
+		if ((chunkOffset < 2) || (numChunkSectors == 0))
+		{
+			return "";
+		}
+
+		// Get the real data size:
+		const char * chunkData = m_FileData.data() + chunkOffset * 4096;
+		UInt32 chunkSize = GetBEInt(chunkData);
+		if ((chunkSize < 2) || (chunkSize / 4096 > numChunkSectors))
+		{
+			// Bad data, bail out
+			return "";
+		}
+
+		// Check the compression method:
+		if (chunkData[4] != 2)
+		{
+			// Chunk is in an unknown compression
+			return "";
+		}
+		chunkSize--;
+
+		// Read the chunk data:
+		return m_FileData.substr(chunkOffset * 4096 + 5, chunkSize);
+	}
+
+protected:
+	AString m_FileData;
+	UInt32 m_Header[2048];
+
+
+	/** Reads the whole specified file contents and parses the header. */
+	void readFile(const AString & a_FileName)
+	{
+		// Read the entire file:
+		m_FileData = cFile::ReadWholeFile(a_FileName);
+		if (m_FileData.size() < sizeof(m_Header))
+		{
+			return;
+		}
+
+		// Parse the header - change endianness:
+		const char * hdr = m_FileData.data();
+		for (size_t i = 0; i < ARRAYCOUNT(m_Header); i++)
+		{
+			m_Header[i] = GetBEInt(hdr + 4 * i);
+		}
+		m_IsValid = true;
+	}
+};
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// AnvilSource:
+
+AnvilSource::AnvilSource(QString a_WorldRegionFolder) :
+	m_WorldRegionFolder(a_WorldRegionFolder)
+{
+}
+
+
+
+
+
+void AnvilSource::getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk)
+{
+	// Load the compressed data:
+	AString compressedChunkData = getCompressedChunkData(a_ChunkX, a_ChunkZ);
+	if (compressedChunkData.empty())
+	{
+		return;
+	}
+
+	// Uncompress the chunk data:
+	AString uncompressed;
+	int res = InflateString(compressedChunkData.data(), compressedChunkData.size(), uncompressed);
+	if (res != Z_OK)
+	{
+		return;
+	}
+
+	// Parse the NBT data:
+	cParsedNBT nbt(uncompressed.data(), uncompressed.size());
+	if (!nbt.IsValid())
+	{
+		return;
+	}
+
+	// Get the biomes out of the NBT:
+	int Level = nbt.FindChildByName(0, "Level");
+	if (Level < 0)
+	{
+		return;
+	}
+	cChunkDef::BiomeMap biomeMap;
+	int mcsBiomes = nbt.FindChildByName(Level, "MCSBiomes");
+	if ((mcsBiomes >= 0) && (nbt.GetDataLength(mcsBiomes) == sizeof(biomeMap)))
+	{
+		// Convert the biomes from BigEndian to platform native numbers:
+		const char * beBiomes = nbt.GetData(mcsBiomes);
+		for (size_t i = 0; i < ARRAYCOUNT(biomeMap); i++)
+		{
+			biomeMap[i] = (EMCSBiome)GetBEInt(beBiomes + 4 * i);
+		}
+		a_DestChunk->setBiomes(biomeMap);
+		return;
+	}
+
+	// MCS biomes not found, load Vanilla biomes instead:
+	int biomes = nbt.FindChildByName(Level, "Biomes");
+	if ((biomes < 0) || (nbt.GetDataLength(biomes) != ARRAYCOUNT(biomeMap)))
+	{
+		return;
+	}
+	// Convert the biomes from Vanilla to EMCSBiome:
+	const char * vanillaBiomes = nbt.GetData(biomes);
+	for (size_t i = 0; i < ARRAYCOUNT(biomeMap); i++)
+	{
+		biomeMap[i] = EMCSBiome(vanillaBiomes[i]);
+	}
+	a_DestChunk->setBiomes(biomeMap);
+}
+
+
+
+
+
+void AnvilSource::reload()
+{
+	// Remove all files from the cache:
+	QMutexLocker lock(&m_Mtx);
+	m_Files.clear();
+}
+
+
+
+
+
+void AnvilSource::chunkToRegion(int a_ChunkX, int a_ChunkZ, int & a_RegionX, int & a_RegionZ)
+{
+	a_RegionX = a_ChunkX >> 5;
+	a_RegionZ = a_ChunkZ >> 5;
+}
+
+
+
+
+
+AString AnvilSource::getCompressedChunkData(int a_ChunkX, int a_ChunkZ)
+{
+	return getAnvilFile(a_ChunkX, a_ChunkZ)->getChunkData(a_ChunkX, a_ChunkZ);
+}
+
+
+
+
+
+AnvilSource::AnvilFilePtr AnvilSource::getAnvilFile(int a_ChunkX, int a_ChunkZ)
+{
+	int RegionX, RegionZ;
+	chunkToRegion(a_ChunkX, a_ChunkZ, RegionX, RegionZ);
+
+	// Search the cache for the file:
+	QMutexLocker lock(&m_Mtx);
+	for (auto itr = m_Files.cbegin(), end = m_Files.cend(); itr != end; ++itr)
+	{
+		if (((*itr)->m_RegionX == RegionX) && ((*itr)->m_RegionZ == RegionZ))
+		{
+			// Found the file in the cache, move it to front and return it:
+			AnvilFilePtr file(*itr);
+			m_Files.erase(itr);
+			m_Files.push_front(file);
+			return file;
+		}
+	}
+
+	// File not in cache, create it:
+	AnvilFilePtr file(new AnvilFile(RegionX, RegionZ, m_WorldRegionFolder.toStdString()));
+	m_Files.push_front(file);
+	return file;
+}
+
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/ChunkSource.h b/Tools/QtBiomeVisualiser/ChunkSource.h
new file mode 100644
index 000000000..7bd1865ff
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/ChunkSource.h
@@ -0,0 +1,107 @@
+#pragma once
+#include "Globals.h"
+#include <QString>
+#include <QMutex>
+#include "QtChunk.h"
+
+
+
+
+
+// fwd:
+class cBiomeGen;
+typedef std::shared_ptr<cBiomeGen> cBiomeGenPtr;
+class cIniFile;
+typedef std::shared_ptr<cIniFile> cIniFilePtr;
+
+
+
+
+
+/** Abstract interface for getting biome data for chunks. */
+class ChunkSource
+{
+public:
+	virtual ~ChunkSource() {}
+
+	/** Fills the a_DestChunk with the biomes for the specified coords.
+	It is expected to be thread-safe and re-entrant. Usually QThread::idealThreadCount() threads are used. */
+	virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) = 0;
+
+	/** Forces a fresh reload of the source. Useful mainly for the generator, whose underlying definition file may have been changed. */
+	virtual void reload() = 0;
+};
+
+
+
+
+
+
+class BioGenSource :
+	public ChunkSource
+{
+public:
+	/** Constructs a new BioGenSource based on the biome generator that is defined in the specified world.ini file. */
+	BioGenSource(cIniFilePtr a_IniFile);
+
+	// ChunkSource overrides:
+	virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) override;
+	virtual void reload(void) override;
+
+protected:
+	/** The world.ini contents from which the generator is created and re-created on reload(). */
+	cIniFilePtr m_IniFile;
+
+	/** The generator used for generating biomes. */
+	std::unique_ptr<cBiomeGen> m_BiomeGen;
+
+	/** Guards m_BiomeGen against multithreaded access. */
+	QMutex m_Mtx;
+};
+
+
+
+
+class AnvilSource :
+	public ChunkSource
+{
+public:
+	/** Constructs a new AnvilSource based on the world path. */
+	AnvilSource(QString a_WorldRegionFolder);
+
+	// ChunkSource overrides:
+	virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) override;
+	virtual void reload() override;
+
+protected:
+	class AnvilFile;
+	typedef std::shared_ptr<AnvilFile> AnvilFilePtr;
+
+
+	/** Folder where the individual Anvil Region files are located. */
+	QString m_WorldRegionFolder;
+
+	/** List of currently loaded files. Acts as a cache so that a file is not opened and closed over and over again.
+	Protected against multithreaded access by m_Mtx. */
+	std::list<AnvilFilePtr> m_Files;
+
+	/** Guards m_Files agains multithreaded access. */
+	QMutex m_Mtx;
+
+
+	/** Converts chunk coords to region coords. */
+	void chunkToRegion(int a_ChunkX, int a_ChunkZ, int & a_RegionX, int & a_RegionZ);
+
+	/** Returns the compressed data of the specified chunk.
+	Returns an empty string if the chunk is not available. */
+	AString getCompressedChunkData(int a_ChunkX, int a_ChunkZ);
+
+	/** Returns the file object that contains the specified chunk.
+	The file is taken from the cache if available there, otherwise it is created anew. */
+	AnvilFilePtr getAnvilFile(int a_ChunkX, int a_ChunkZ);
+
+};
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/GeneratorSetup.cpp b/Tools/QtBiomeVisualiser/GeneratorSetup.cpp
new file mode 100644
index 000000000..d6348ee00
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/GeneratorSetup.cpp
@@ -0,0 +1,158 @@
+#include "Globals.h"
+#include "GeneratorSetup.h"
+#include <QLabel>
+#include <QLineEdit>
+#include "src/Generating/BioGen.h"
+#include "inifile/iniFile.h"
+
+
+
+
+
+static const QString s_GeneratorNames[] =
+{
+	QString("Checkerboard"),
+	QString("Constant"),
+	QString("DistortedVoronoi"),
+	QString("MultiStepMap"),
+	QString("TwoLevel"),
+	QString("Voronoi"),
+};
+
+
+
+
+
+GeneratorSetup::GeneratorSetup(const AString & a_IniFileName, QWidget * a_Parent) :
+	super(a_Parent),
+	m_IniFile(new cIniFile())
+{
+	// The seed and generator name is in a separate form layout at the top, always present:
+	m_eSeed = new QLineEdit();
+	m_eSeed->setValidator(new QIntValidator());
+	m_eSeed->setText("0");
+	m_eSeed->setProperty("INI.SectionName", QVariant("Seed"));
+	m_eSeed->setProperty("INI.ItemName", QVariant("Seed"));
+	m_cbGenerator = new QComboBox();
+	m_cbGenerator->setMinimumWidth(120);
+	for (size_t i = 0; i < ARRAYCOUNT(s_GeneratorNames); i++)
+	{
+		m_cbGenerator->addItem(s_GeneratorNames[i]);
+	}
+	QFormLayout * baseLayout = new QFormLayout();
+	baseLayout->addRow(new QLabel(tr("Seed")), m_eSeed);
+	baseLayout->addRow(new QLabel(tr("Generator")), m_cbGenerator);
+
+	// The rest of the controls are in a dynamically created form layout:
+	m_FormLayout = new QFormLayout();
+
+	// The main layout joins these two vertically:
+	m_MainLayout = new QVBoxLayout();
+	m_MainLayout->addLayout(baseLayout);
+	m_MainLayout->addLayout(m_FormLayout);
+	m_MainLayout->addStretch();
+	setLayout(m_MainLayout);
+
+	// Load the INI file, if specified, otherwise set defaults:
+	if (a_IniFileName.empty() || !m_IniFile->ReadFile(a_IniFileName))
+	{
+		m_IniFile->SetValue("Generator", "Generator", "Composable");
+		m_IniFile->SetValue("Generator", "BiomeGen", m_cbGenerator->currentText().toStdString());
+		bool dummy;
+		delete cBiomeGen::CreateBiomeGen(*m_IniFile, 0, dummy);
+	}
+	updateFromIni();
+
+	// Connect the change events only after the data has been loaded:
+	connect(m_cbGenerator, SIGNAL(currentIndexChanged(QString)), this, SLOT(generatorChanged(QString)));
+	connect(m_eSeed,       SIGNAL(textChanged(QString)),         this, SLOT(editChanged(QString)));
+}
+
+
+
+
+
+void GeneratorSetup::generatorChanged(const QString & a_NewName)
+{
+	// Clear the current contents of the form layout by assigning it to a stack temporary:
+	{
+		m_MainLayout->takeAt(1);
+		QWidget().setLayout(m_FormLayout);
+	}
+
+	// Re-create the layout:
+	m_FormLayout = new QFormLayout();
+	m_MainLayout->insertLayout(1, m_FormLayout);
+
+	// Recreate the INI file:
+	m_IniFile->Clear();
+	m_IniFile->SetValue("Generator", "Generator", "Composable");
+	m_IniFile->SetValue("Generator", "BiomeGen", a_NewName.toStdString());
+
+	// Create a dummy biome gen from the INI file, this will create the defaults in the INI file:
+	bool dummy;
+	delete cBiomeGen::CreateBiomeGen(*m_IniFile, m_Seed, dummy);
+
+	// Read all values from the INI file and put them into the form layout:
+	updateFromIni();
+
+	// Notify of the changes:
+	emit generatorUpdated();
+}
+
+
+
+
+
+void GeneratorSetup::editChanged(const QString & a_NewValue)
+{
+	QString sectionName = sender()->property("INI.SectionName").toString();
+	QString itemName    = sender()->property("INI.ItemName").toString();
+	m_IniFile->SetValue(sectionName.toStdString(), itemName.toStdString(), a_NewValue.toStdString());
+	emit generatorUpdated();
+}
+
+
+
+
+
+void GeneratorSetup::updateFromIni()
+{
+	m_eSeed->setText(QString::number(m_IniFile->GetValueI("Seed", "Seed", 0)));
+	int keyID = m_IniFile->FindKey("Generator");
+	if (keyID <= -1)
+	{
+		return;
+	}
+	int numItems = m_IniFile->GetNumValues(keyID);
+	AString generatorName = m_IniFile->GetValue("Generator", "BiomeGen");
+	size_t generatorNameLen = generatorName.length();
+	for (int i = 0; i < numItems; i++)
+	{
+		AString itemName  = m_IniFile->GetValueName(keyID, i);
+		if ((itemName == "Generator") || (itemName == "BiomeGen"))
+		{
+			// These special cases are not to be added
+			continue;
+		}
+		AString itemValue = m_IniFile->GetValue(keyID, i);
+
+		QLineEdit * edit = new QLineEdit();
+		edit->setText(QString::fromStdString(itemValue));
+		edit->setProperty("INI.SectionName", QVariant("Generator"));
+		edit->setProperty("INI.ItemName", QVariant(QString::fromStdString(itemName)));
+
+		// Remove the generator name prefix from the item name, for clarity purposes:
+		if (NoCaseCompare(itemName.substr(0, generatorNameLen), generatorName) == 0)
+		{
+			itemName.erase(0, generatorNameLen);
+		}
+
+		connect(edit, SIGNAL(textChanged(QString)), this, SLOT(editChanged(QString)));
+		m_FormLayout->addRow(new QLabel(QString::fromStdString(itemName)), edit);
+	}  // for i - INI values[]
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/GeneratorSetup.h b/Tools/QtBiomeVisualiser/GeneratorSetup.h
new file mode 100644
index 000000000..e72d3abbc
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/GeneratorSetup.h
@@ -0,0 +1,64 @@
+#pragma once
+
+#include <memory>
+#include <QDialog>
+#include <QComboBox>
+#include <QVBoxLayout>
+#include <QFormLayout>
+
+
+
+
+
+class cIniFile;
+typedef std::shared_ptr<cIniFile> cIniFilePtr;
+
+
+
+
+
+class GeneratorSetup :
+	public QWidget
+{
+	typedef QWidget super;
+
+	Q_OBJECT
+
+public:
+	/** Creates the widget and loads the contents of the INI file, if not empty. */
+	explicit GeneratorSetup(const std::string & a_IniFileName, QWidget * parent = nullptr);
+
+	/** Returns the cIniFile instance that is being edited by this widget. */
+	cIniFilePtr getIniFile() { return m_IniFile; }
+
+signals:
+	/** Emitted when the generator parameters have changed. */
+	void generatorUpdated();
+
+public slots:
+	/** Called when the user selects a different generator from the top combobox.
+	Re-creates m_IniFile and updates the form layout. */
+	void generatorChanged(const QString & a_NewName);
+
+protected slots:
+	/** Called when any of the edit widgets are changed. */
+	void editChanged(const QString & a_NewValue);
+
+protected:
+	QComboBox * m_cbGenerator;
+	QLineEdit * m_eSeed;
+	QVBoxLayout * m_MainLayout;
+	QFormLayout * m_FormLayout;
+
+	cIniFilePtr m_IniFile;
+
+	int m_Seed;
+
+
+	/** Updates the form layout with the values from m_IniFile. */
+	void updateFromIni();
+};
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/Globals.h b/Tools/QtBiomeVisualiser/Globals.h
new file mode 100644
index 000000000..e2e9a9970
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/Globals.h
@@ -0,0 +1,395 @@
+#pragma once
+
+
+
+
+
+// Compiler-dependent stuff:
+#if defined(_MSC_VER)
+	// MSVC produces warning C4481 on the override keyword usage, so disable the warning altogether
+	#pragma warning(disable:4481)
+
+	// Disable some warnings that we don't care about:
+	#pragma warning(disable:4100)  // Unreferenced formal parameter
+
+	// Useful warnings from warning level 4:
+	#pragma warning(3 : 4127)  // Conditional expression is constant
+	#pragma warning(3 : 4189)  // Local variable is initialized but not referenced
+	#pragma warning(3 : 4245)  // Conversion from 'type1' to 'type2', signed/unsigned mismatch
+	#pragma warning(3 : 4310)  // Cast truncates constant value
+	#pragma warning(3 : 4389)  // Signed/unsigned mismatch
+	#pragma warning(3 : 4505)  // Unreferenced local function has been removed
+	#pragma warning(3 : 4701)  // Potentially unitialized local variable used
+	#pragma warning(3 : 4702)  // Unreachable code
+	#pragma warning(3 : 4706)  // Assignment within conditional expression
+
+	// Disabling this warning, because we know what we're doing when we're doing this:
+	#pragma warning(disable: 4355)  // 'this' used in initializer list
+
+	// Disabled because it's useless:
+	#pragma warning(disable: 4512)  // 'class': assignment operator could not be generated - reported for each class that has a reference-type member
+
+	// 2014_01_06 xoft: Disabled this warning because MSVC is stupid and reports it in obviously wrong places
+	// #pragma warning(3 : 4244)  // Conversion from 'type1' to 'type2', possible loss of data
+
+	#define OBSOLETE __declspec(deprecated)
+
+	// No alignment needed in MSVC
+	#define ALIGN_8
+	#define ALIGN_16
+
+	#define FORMATSTRING(formatIndex, va_argsIndex)
+
+	// MSVC has its own custom version of zu format
+	#define SIZE_T_FMT "%Iu"
+	#define SIZE_T_FMT_PRECISION(x) "%" #x "Iu"
+	#define SIZE_T_FMT_HEX "%Ix"
+
+	#define NORETURN      __declspec(noreturn)
+
+#elif defined(__GNUC__)
+
+	// TODO: Can GCC explicitly mark classes as abstract (no instances can be created)?
+	#define abstract
+
+	// override is part of c++11
+	#if __cplusplus < 201103L
+		#define override
+	#endif
+
+	#define OBSOLETE __attribute__((deprecated))
+
+	#define ALIGN_8 __attribute__((aligned(8)))
+	#define ALIGN_16 __attribute__((aligned(16)))
+
+	// Some portability macros :)
+	#define stricmp strcasecmp
+
+	#define FORMATSTRING(formatIndex, va_argsIndex) __attribute__((format (printf, formatIndex, va_argsIndex)))
+
+	#if defined(_WIN32)
+		// We're compiling on MinGW, which uses an old MSVCRT library that has no support for size_t printfing.
+		// We need direct size formats:
+		#if defined(_WIN64)
+			#define SIZE_T_FMT "%I64u"
+			#define SIZE_T_FMT_PRECISION(x) "%" #x "I64u"
+			#define SIZE_T_FMT_HEX "%I64x"
+		#else
+			#define SIZE_T_FMT "%u"
+			#define SIZE_T_FMT_PRECISION(x) "%" #x "u"
+			#define SIZE_T_FMT_HEX "%x"
+		#endif
+	#else
+		// We're compiling on Linux, so we can use libc's size_t printf format:
+		#define SIZE_T_FMT "%zu"
+		#define SIZE_T_FMT_PRECISION(x) "%" #x "zu"
+		#define SIZE_T_FMT_HEX "%zx"
+	#endif
+
+	#define NORETURN      __attribute((__noreturn__))
+
+#else
+
+	#error "You are using an unsupported compiler, you might need to #define some stuff here for your compiler"
+
+	/*
+	// Copy and uncomment this into another #elif section based on your compiler identification
+
+	// Explicitly mark classes as abstract (no instances can be created)
+	#define abstract
+
+	// Mark virtual methods as overriding (forcing them to have a virtual function of the same signature in the base class)
+	#define override
+
+	// Mark functions as obsolete, so that their usage results in a compile-time warning
+	#define OBSOLETE
+
+	// Mark types / variables for alignment. Do the platforms need it?
+	#define ALIGN_8
+	#define ALIGN_16
+	*/
+
+#endif
+
+
+#ifdef  _DEBUG
+	#define NORETURNDEBUG NORETURN
+#else
+	#define NORETURNDEBUG
+#endif
+
+
+#include <stddef.h>
+
+
+// Integral types with predefined sizes:
+typedef long long Int64;
+typedef int       Int32;
+typedef short     Int16;
+
+typedef unsigned long long UInt64;
+typedef unsigned int       UInt32;
+typedef unsigned short     UInt16;
+
+typedef unsigned char Byte;
+
+
+// If you get an error about specialization check the size of integral types
+template <typename T, size_t Size, bool x = sizeof(T) == Size>
+class SizeChecker;
+
+template <typename T, size_t Size>
+class SizeChecker<T, Size, true>
+{
+	T v;
+};
+
+template class SizeChecker<Int64, 8>;
+template class SizeChecker<Int32, 4>;
+template class SizeChecker<Int16, 2>;
+
+template class SizeChecker<UInt64, 8>;
+template class SizeChecker<UInt32, 4>;
+template class SizeChecker<UInt16, 2>;
+
+// A macro to disallow the copy constructor and operator = functions
+// This should be used in the private: declarations for any class that shouldn't allow copying itself
+#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
+	TypeName(const TypeName &); \
+	void operator =(const TypeName &)
+
+// A macro that is used to mark unused local variables, to avoid pedantic warnings in gcc / clang / MSVC
+// Note that in MSVC it requires the full type of X to be known
+#define UNUSED_VAR(X) (void)(X)
+
+// A macro that is used to mark unused function parameters, to avoid pedantic warnings in gcc
+// Written so that the full type of param needn't be known
+#ifdef _MSC_VER
+	#define UNUSED(X)
+#else
+	#define UNUSED UNUSED_VAR
+#endif
+
+
+
+
+// OS-dependent stuff:
+#ifdef _WIN32
+	#define WIN32_LEAN_AND_MEAN
+
+	#define _WIN32_WINNT 0x501  // We want to target WinXP and higher
+
+	#include <Windows.h>
+	#include <winsock2.h>
+	#include <Ws2tcpip.h>  // IPv6 stuff
+
+	// Windows SDK defines min and max macros, messing up with our std::min and std::max usage
+	#undef min
+	#undef max
+
+	// Windows SDK defines GetFreeSpace as a constant, probably a Win16 API remnant
+	#ifdef GetFreeSpace
+		#undef GetFreeSpace
+	#endif  // GetFreeSpace
+#else
+	#include <sys/types.h>
+	#include <sys/time.h>
+	#include <sys/socket.h>
+	#include <netinet/in.h>
+	#include <arpa/inet.h>
+	#include <netdb.h>
+	#include <time.h>
+	#include <dirent.h>
+	#include <errno.h>
+	#include <iostream>
+	#include <cstdio>
+	#include <cstring>
+	#include <pthread.h>
+	#include <semaphore.h>
+	#include <errno.h>
+	#include <fcntl.h>
+#endif
+
+#if defined(ANDROID_NDK)
+	#define FILE_IO_PREFIX "/sdcard/mcserver/"
+#else
+	#define FILE_IO_PREFIX ""
+#endif
+
+
+
+
+
+// CRT stuff:
+#include <sys/stat.h>
+#include <assert.h>
+#include <stdio.h>
+#include <math.h>
+#include <stdarg.h>
+
+
+
+
+
+// STL stuff:
+#include <vector>
+#include <list>
+#include <deque>
+#include <string>
+#include <map>
+#include <algorithm>
+#include <memory>
+#include <set>
+#include <queue>
+#include <limits>
+
+
+
+#ifndef TEST_GLOBALS
+	// Common headers (part 1, without macros):
+	#include "src/StringUtils.h"
+	#include "src/OSSupport/Sleep.h"
+	#include "src/OSSupport/CriticalSection.h"
+	#include "src/OSSupport/Semaphore.h"
+	#include "src/OSSupport/Event.h"
+	#include "src/OSSupport/Thread.h"
+	#include "src/OSSupport/File.h"
+	#include "src/Logger.h"
+#else
+	// Logging functions
+void inline LOGERROR(const char* a_Format, ...) FORMATSTRING(1, 2);
+
+void inline LOGERROR(const char* a_Format, ...)
+{
+	va_list argList;
+	va_start(argList, a_Format);
+	vprintf(a_Format, argList);
+	va_end(argList);
+}
+#endif
+
+
+
+
+
+// Common definitions:
+
+/// Evaluates to the number of elements in an array (compile-time!)
+#define ARRAYCOUNT(X) (sizeof(X) / sizeof(*(X)))
+
+/// Allows arithmetic expressions like "32 KiB" (but consider using parenthesis around it, "(32 KiB)")
+#define KiB * 1024
+#define MiB * 1024 * 1024
+
+/// Faster than (int)floorf((float)x / (float)div)
+#define FAST_FLOOR_DIV( x, div) (((x) - (((x) < 0) ? ((div) - 1) : 0)) / (div))
+
+// Own version of assert() that writes failed assertions to the log for review
+#ifdef TEST_GLOBALS
+
+	class cAssertFailure
+	{
+	};
+
+	#ifdef _WIN32
+		#if (defined(_MSC_VER) && defined(_DEBUG))
+			#define DBG_BREAK _CrtDbgBreak()
+		#else
+			#define DBG_BREAK
+		#endif
+		#define REPORT_ERROR(FMT, ...) \
+		{ \
+			AString msg = Printf(FMT, __VA_ARGS__); \
+			puts(msg.c_str()); \
+			fflush(stdout); \
+			OutputDebugStringA(msg.c_str()); \
+			DBG_BREAK; \
+		}
+	#else
+		#define REPORT_ERROR(FMT, ...) \
+		{ \
+			AString msg = Printf(FMT, __VA_ARGS__); \
+			puts(msg.c_str()); \
+			fflush(stdout); \
+		}
+	#endif
+	#define ASSERT(x) do { if (!(x)) { throw cAssertFailure();} } while (0)
+	#define testassert(x) do { if (!(x)) { REPORT_ERROR("Test failure: %s, file %s, line %d\n", #x, __FILE__, __LINE__); exit(1); } } while (0)
+	#define CheckAsserts(x) do { try {x} catch (cAssertFailure) { break; } REPORT_ERROR("Test failure: assert didn't fire for %s, file %s, line %d\n", #x, __FILE__, __LINE__); exit(1); } while (0)
+
+#else
+	#ifdef  _DEBUG
+		#define ASSERT( x) ( !!(x) || ( LOGERROR("Assertion failed: %s, file %s, line %i", #x, __FILE__, __LINE__), assert(0), 0))
+	#else
+		#define ASSERT(x) ((void)(x))
+	#endif
+#endif
+
+// Pretty much the same as ASSERT() but stays in Release builds
+#define VERIFY( x) ( !!(x) || ( LOGERROR("Verification failed: %s, file %s, line %i", #x, __FILE__, __LINE__), exit(1), 0))
+
+// Same as assert but in all Self test builds
+#ifdef SELF_TEST
+	#define assert_test(x) ( !!(x) || (assert(!#x), exit(1), 0))
+#endif
+
+// Allow both Older versions of MSVC and newer versions of everything use a shared_ptr:
+// Note that we cannot typedef, because C++ doesn't allow (partial) templates to be typedeffed.
+#if (defined(_MSC_VER) && (_MSC_VER < 1600))
+	// MSVC before 2010 doesn't have std::shared_ptr, but has std::tr1::shared_ptr, defined in <memory> included earlier
+	#define SharedPtr std::tr1::shared_ptr
+#elif (defined(_MSC_VER) || (__cplusplus >= 201103L))
+	// C++11 has std::shared_ptr in <memory>, included earlier
+	#define SharedPtr std::shared_ptr
+#else
+	// C++03 has std::tr1::shared_ptr in <tr1/memory>
+	#include <tr1/memory>
+	#define SharedPtr std::tr1::shared_ptr
+#endif
+
+
+
+
+
+/** A generic interface used mainly in ForEach() functions */
+template <typename Type> class cItemCallback
+{
+public:
+	virtual ~cItemCallback() {}
+
+	/** Called for each item in the internal list; return true to stop the loop, or false to continue enumerating */
+	virtual bool Item(Type * a_Type) = 0;
+} ;
+
+
+
+
+/** Clamp X to the specified range. */
+template <typename T>
+T Clamp(T a_Value, T a_Min, T a_Max)
+{
+	return (a_Value < a_Min) ? a_Min : ((a_Value > a_Max) ? a_Max : a_Value);
+}
+
+
+
+
+
+#ifndef TOLUA_TEMPLATE_BIND
+	#define TOLUA_TEMPLATE_BIND(x)
+#endif
+
+
+
+
+
+// Common headers (part 2, with macros):
+#include "src/ChunkDef.h"
+#include "src/BiomeDef.h"
+#include "src/BlockID.h"
+#include "src/BlockInfo.h"
+
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/MainWindow.cpp b/Tools/QtBiomeVisualiser/MainWindow.cpp
new file mode 100644
index 000000000..63d72f992
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/MainWindow.cpp
@@ -0,0 +1,440 @@
+#include "Globals.h"
+#include "MainWindow.h"
+#include <QVBoxLayout>
+#include <QAction>
+#include <QMenuBar>
+#include <QApplication>
+#include <QFileDialog>
+#include <QSettings>
+#include <QDirIterator>
+#include <QStatusBar>
+#include "inifile/iniFile.h"
+#include "ChunkSource.h"
+#include "src/Generating/BioGen.h"
+#include "src/StringCompression.h"
+#include "src/WorldStorage/FastNBT.h"
+#include "GeneratorSetup.h"
+
+
+
+
+
+const double MainWindow::m_ViewZooms[] =
+{
+	0.0625, 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 24,
+};
+
+
+
+
+
+MainWindow::MainWindow(QWidget * parent) :
+	QMainWindow(parent),
+	m_GeneratorSetup(nullptr),
+	m_LineSeparator(nullptr)
+{
+	initMinecraftPath();
+
+	m_BiomeView = new BiomeView();
+	connect(m_BiomeView, SIGNAL(increaseZoom()), this, SLOT(increaseZoom()));
+	connect(m_BiomeView, SIGNAL(decreaseZoom()), this, SLOT(decreaseZoom()));
+	connect(m_BiomeView, SIGNAL(wheelUp()),      this, SLOT(increaseZoom()));
+	connect(m_BiomeView, SIGNAL(wheelDown()),    this, SLOT(decreaseZoom()));
+
+	m_StatusBar = new QStatusBar();
+	this->setStatusBar(m_StatusBar);
+	m_StatusBlockX = new QLabel(tr("X"));
+	m_StatusBlockZ = new QLabel(tr("Z"));
+	m_StatusBiome = new QLabel(tr("B"));
+	m_StatusBar->addPermanentWidget(m_StatusBlockX);
+	m_StatusBar->addPermanentWidget(m_StatusBlockZ);
+	m_StatusBar->addPermanentWidget(m_StatusBiome);
+
+	m_MainLayout = new QHBoxLayout();
+	m_MainLayout->addWidget(m_BiomeView, 1);
+	m_MainLayout->setMenuBar(menuBar());
+	m_MainLayout->setMargin(0);
+	QWidget * central = new QWidget();
+	central->setLayout(m_MainLayout);
+	setCentralWidget(central);
+
+	createActions();
+	createMenus();
+
+	connect(m_BiomeView, SIGNAL(hoverChanged(int, int, int)), this, SLOT(hoverChanged(int, int, int)));
+}
+
+
+
+
+
+MainWindow::~MainWindow()
+{
+
+}
+
+
+
+
+
+void MainWindow::newGenerator()
+{
+	// (Re-)open the generator setup dialog with empty settings:
+	openGeneratorSetup("");
+
+	// Set the chunk source:
+	cIniFilePtr iniFile = m_GeneratorSetup->getIniFile();
+	m_BiomeView->setChunkSource(std::shared_ptr<BioGenSource>(new BioGenSource(iniFile)));
+	m_BiomeView->redraw();
+}
+
+
+
+
+
+void MainWindow::openGenerator()
+{
+	// Let the user specify the world.ini file:
+	QString worldIni = QFileDialog::getOpenFileName(this, tr("Open world.ini"), QString(), tr("world.ini (world.ini)"));
+	if (worldIni.isEmpty())
+	{
+		return;
+	}
+
+	// (Re-)open the generator setup dialog:
+	openGeneratorSetup(worldIni.toStdString());
+
+	// Set the chunk source:
+	m_BiomeView->setChunkSource(std::shared_ptr<BioGenSource>(new BioGenSource(m_GeneratorSetup->getIniFile())));
+	m_BiomeView->redraw();
+}
+
+
+
+
+
+void MainWindow::openWorld()
+{
+	// Let the user specify the world:
+	QString regionFolder = QFileDialog::getExistingDirectory(this, tr("Select the region folder"), QString());
+	if (regionFolder.isEmpty())
+	{
+		return;
+	}
+
+	// Remove the generator setup dialog, if open:
+	closeGeneratorSetup();
+
+	// Set the chunk source:
+	m_BiomeView->setChunkSource(std::shared_ptr<AnvilSource>(new AnvilSource(regionFolder)));
+	m_BiomeView->redraw();
+}
+
+
+
+
+
+void MainWindow::openVanillaWorld()
+{
+	// The world is stored in the sender action's data, retrieve it:
+	QAction * action = qobject_cast<QAction *>(sender());
+	if (action == nullptr)
+	{
+		return;
+	}
+
+	// Remove the generator setup dialog, if open:
+	closeGeneratorSetup();
+
+	// Set the chunk source:
+	m_BiomeView->setChunkSource(std::shared_ptr<AnvilSource>(new AnvilSource(action->data().toString())));
+	m_BiomeView->redraw();
+}
+
+
+
+
+
+void MainWindow::centerView()
+{
+	m_BiomeView->setPosition(0, 0);
+}
+
+
+
+
+
+void MainWindow::setViewZoom()
+{
+	// The zoom level is stored in the sender action's data, retrieve it:
+	QAction * action = qobject_cast<QAction *>(sender());
+	if (action == nullptr)
+	{
+		return;
+	}
+	double newZoom = m_ViewZooms[action->data().toInt()];
+	m_BiomeView->setZoomLevel(newZoom);
+	action->setChecked(true);
+}
+
+
+
+
+
+void MainWindow::increaseZoom()
+{
+	// If already at max zoom, bail out:
+	if (m_CurrentZoomLevel >= ARRAYCOUNT(m_ViewZooms) - 1)
+	{
+		return;
+	}
+
+	// Increase the zoom level:
+	m_CurrentZoomLevel += 1;
+	m_actViewZoom[m_CurrentZoomLevel]->setChecked(true);
+	m_BiomeView->setZoomLevel(m_ViewZooms[m_CurrentZoomLevel]);
+}
+
+
+
+
+
+void MainWindow::decreaseZoom()
+{
+	// If already at min zoom, bail out:
+	if (m_CurrentZoomLevel == 0)
+	{
+		return;
+	}
+
+	// Decrease the zoom level:
+	m_CurrentZoomLevel -= 1;
+	m_actViewZoom[m_CurrentZoomLevel]->setChecked(true);
+	m_BiomeView->setZoomLevel(m_ViewZooms[m_CurrentZoomLevel]);
+}
+
+
+
+
+
+void MainWindow::hoverChanged(int a_BlockX, int a_BlockZ, int a_Biome)
+{
+	m_StatusBlockX->setText(tr("X: %1").arg(a_BlockX));
+	m_StatusBlockZ->setText(tr("Z: %1").arg(a_BlockZ));
+	m_StatusBiome->setText (tr("B: %1 (%2)").arg(BiomeToString(a_Biome).c_str()).arg(a_Biome));
+}
+
+
+
+
+
+void MainWindow::initMinecraftPath()
+{
+	#ifdef Q_OS_MAC
+		m_MinecraftPath = QDir::homePath() + QDir::toNativeSeparators("/Library/Application Support/minecraft");
+	#elif defined Q_OS_WIN32
+		QSettings ini(QSettings::IniFormat, QSettings::UserScope, ".minecraft", "minecraft1");
+		m_MinecraftPath = QFileInfo(ini.fileName()).absolutePath();
+	#else
+		m_MinecraftPath = QDir::homePath() + QDir::toNativeSeparators("/.minecraft");
+	#endif
+}
+
+
+
+
+
+void MainWindow::createActions()
+{
+	// Map menu:
+	createWorldActions();
+
+	m_actNewGen = new QAction(tr("&New generator"), this);
+	m_actNewGen->setShortcut(tr("Ctrl+N"));
+	m_actNewGen->setStatusTip(tr("Open a generator INI file and display the generated biomes"));
+	connect(m_actNewGen, SIGNAL(triggered()), this, SLOT(newGenerator()));
+
+	m_actOpenGen = new QAction(tr("&Open generator..."), this);
+	m_actOpenGen->setShortcut(tr("Ctrl+G"));
+	m_actOpenGen->setStatusTip(tr("Open a generator INI file and display the generated biomes"));
+	connect(m_actOpenGen, SIGNAL(triggered()), this, SLOT(openGenerator()));
+
+	m_actOpenWorld = new QAction(tr("&Open world..."), this);
+	m_actOpenWorld->setShortcut(tr("Ctrl+O"));
+	m_actOpenWorld->setStatusTip(tr("Open an existing world and display its biomes"));
+	connect(m_actOpenWorld, SIGNAL(triggered()), this, SLOT(openWorld()));
+
+	m_actReload = new QAction(tr("&Reload"), this);
+	m_actReload->setShortcut(tr("F5"));
+	m_actReload->setStatusTip(tr("Clear the view cache and force a reload of all the data"));
+	connect(m_actReload, SIGNAL(triggered()), m_BiomeView, SLOT(reload()));
+
+	m_actExit = new QAction(tr("E&xit"), this);
+	m_actExit->setShortcut(tr("Alt+X"));
+	m_actExit->setStatusTip(tr("Exit %1").arg(QApplication::instance()->applicationName()));
+	connect(m_actExit, SIGNAL(triggered()), this, SLOT(close()));
+
+	// View menu:
+	m_actViewCenter = new QAction(tr("&Reset to center"), this);
+	m_actViewCenter->setStatusTip(tr("Scrolls the view back to the map center"));
+	connect(m_actViewCenter, SIGNAL(triggered()), this, SLOT(centerView()));
+
+	QActionGroup * zoomGroup = new QActionGroup(this);
+	for (int i = 0; i < ARRAYCOUNT(m_ViewZooms); i++)
+	{
+		m_actViewZoom[i] = new QAction(tr("&Zoom %1%").arg(std::floor(m_ViewZooms[i] * 100)), this);
+		m_actViewZoom[i]->setCheckable(true);
+		if ((int)(m_ViewZooms[i] * 16) == 16)
+		{
+			m_actViewZoom[i]->setChecked(true);
+			m_CurrentZoomLevel = i;
+		}
+		m_actViewZoom[i]->setData(QVariant(i));
+		zoomGroup->addAction(m_actViewZoom[i]);
+		connect(m_actViewZoom[i], SIGNAL(triggered()), this, SLOT(setViewZoom()));
+	}
+}
+
+
+
+
+
+void MainWindow::createWorldActions()
+{
+	QDir mc(m_MinecraftPath);
+	if (!mc.cd("saves"))
+	{
+		return;
+	}
+
+	QDirIterator it(mc);
+	int key = 1;
+	while (it.hasNext())
+	{
+		it.next();
+		if (!it.fileInfo().isDir())
+		{
+			continue;
+		}
+		QString name = getWorldName(it.filePath().toStdString());
+		if (name.isEmpty())
+		{
+			continue;
+		}
+		QAction * w = new QAction(this);
+		w->setText(name);
+		w->setData(it.filePath() + "/region");
+		if (key < 10)
+		{
+			w->setShortcut("Ctrl+" + QString::number(key));
+			key++;
+		}
+		connect(w, SIGNAL(triggered()), this, SLOT(openVanillaWorld()));
+		m_WorldActions.append(w);
+	}
+}
+
+
+
+
+
+void MainWindow::createMenus()
+{
+	// Map menu:
+	QMenu * file = menuBar()->addMenu(tr("&Map"));
+	file->addAction(m_actNewGen);
+	file->addAction(m_actOpenGen);
+	file->addSeparator();
+	QMenu * worlds = file->addMenu(tr("Open &existing"));
+	worlds->addActions(m_WorldActions);
+	if (m_WorldActions.empty())
+	{
+		worlds->setEnabled(false);
+	}
+	file->addAction(m_actOpenWorld);
+	file->addSeparator();
+	file->addAction(m_actReload);
+	file->addSeparator();
+	file->addAction(m_actExit);
+
+	// View menu:
+	QMenu * view = menuBar()->addMenu(tr("&View"));
+	view->addAction(m_actViewCenter);
+	view->addSeparator();
+	for (size_t i = 0; i < ARRAYCOUNT(m_actViewZoom); i++)
+	{
+		view->addAction(m_actViewZoom[i]);
+	}
+}
+
+
+
+
+
+QString MainWindow::getWorldName(const AString & a_Path)
+{
+	AString levelData = cFile::ReadWholeFile(a_Path + "/level.dat");
+	if (levelData.empty())
+	{
+		// No such file / no data
+		return QString();
+	}
+
+	AString uncompressed;
+	if (UncompressStringGZIP(levelData.data(), levelData.size(), uncompressed) != Z_OK)
+	{
+		return QString();
+	}
+	cParsedNBT nbt(uncompressed.data(), uncompressed.size());
+	if (!nbt.IsValid())
+	{
+		return QString();
+	}
+	AString name = nbt.GetName(1);
+	int levelNameTag = nbt.FindTagByPath(nbt.GetRoot(), "Data\\LevelName");
+	if ((levelNameTag <= 0) || (nbt.GetType(levelNameTag) != TAG_String))
+	{
+		return QString();
+	}
+	return QString::fromStdString(nbt.GetString(levelNameTag));
+}
+
+
+
+
+
+void MainWindow::openGeneratorSetup(const AString & a_IniFileName)
+{
+	// Close any previous editor:
+	closeGeneratorSetup();
+
+	// Open up a new editor:
+	m_GeneratorSetup = new GeneratorSetup(a_IniFileName);
+	m_LineSeparator = new QWidget();
+	m_LineSeparator->setFixedWidth(2);
+	m_LineSeparator->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
+	m_LineSeparator->setStyleSheet(QString("background-color: #c0c0c0;"));
+	m_MainLayout->addWidget(m_LineSeparator);
+	m_MainLayout->addWidget(m_GeneratorSetup);
+
+	// Connect the signals from the setup pane:
+	connect(m_GeneratorSetup, SIGNAL(generatorUpdated()), m_BiomeView, SLOT(reload()));
+}
+
+
+
+
+
+void MainWindow::closeGeneratorSetup()
+{
+	delete m_MainLayout->takeAt(2);
+	delete m_MainLayout->takeAt(1);
+	delete m_GeneratorSetup;
+	delete m_LineSeparator;
+	m_GeneratorSetup = nullptr;
+	m_LineSeparator = nullptr;
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/MainWindow.h b/Tools/QtBiomeVisualiser/MainWindow.h
new file mode 100644
index 000000000..27faae7a8
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/MainWindow.h
@@ -0,0 +1,127 @@
+#pragma once
+
+#include <memory>
+#include <QList>
+#include <QMainWindow>
+#include <QHBoxLayout>
+#include <QLabel>
+#include "BiomeView.h"
+
+
+
+
+
+// fwd:
+class GeneratorSetup;
+
+
+
+
+
+class MainWindow :
+	public QMainWindow
+{
+	Q_OBJECT
+
+public:
+	MainWindow(QWidget * parent = nullptr);
+	~MainWindow();
+
+private slots:
+	/** Creates a generator definition from scratch, lets user modify generator params in realtime. */
+	void newGenerator();
+
+	/** Opens a generator definition and generates the biomes based on that. */
+	void openGenerator();
+
+	/** Opens an existing world and displays the loaded biomes. */
+	void openWorld();
+
+	/** Opens a vanilla world that is specified by the calling action. */
+	void openVanillaWorld();
+
+	/** Moves the view to the map's center. */
+	void centerView();
+
+	/** Sets the zoom level specified in the triggering action. */
+	void setViewZoom();
+
+	/** Sets a zoom level one step larger than current, if allowed. */
+	void increaseZoom();
+
+	/** Sets a zoom level one step smaller than current, if allowed. */
+	void decreaseZoom();
+
+	/** Updates the statusbar for the specified info about the current block under the cursor. */
+	void hoverChanged(int a_BlockX, int a_BlockZ, int a_Biome);
+
+protected:
+	/** The zoom levels */
+	static const double m_ViewZooms[10];
+
+	// Actions:
+	QAction * m_actNewGen;
+	QAction * m_actOpenGen;
+	QAction * m_actOpenWorld;
+	QAction * m_actReload;
+	QAction * m_actExit;
+	QAction * m_actViewCenter;
+	QAction * m_actViewZoom[ARRAYCOUNT(m_ViewZooms)];
+
+	/** List of actions that open the specific vanilla world. */
+	QList<QAction *> m_WorldActions;
+
+	/** Path to the vanilla folder. */
+	QString m_MinecraftPath;
+
+	/** The pane for setting up the generator, available when visualising a generator. */
+	GeneratorSetup * m_GeneratorSetup;
+
+	/** The main biome display widget. */
+	BiomeView * m_BiomeView;
+
+	/** The layout for the window. */
+	QHBoxLayout * m_MainLayout;
+
+	/** The status bar that displays the current hover information. */
+	QStatusBar * m_StatusBar;
+
+	QLabel * m_StatusBlockX;
+	QLabel * m_StatusBlockZ;
+	QLabel * m_StatusBiome;
+
+	/** The separator line between biome view and generator setup. */
+	QWidget * m_LineSeparator;
+
+	/** Index into m_ViewZooms[] for the current zoom level. */
+	size_t m_CurrentZoomLevel;
+
+
+	/** Initializes the m_MinecraftPath based on the proper MC path */
+	void initMinecraftPath();
+
+	/** Creates the actions that the UI supports. */
+	void createActions();
+
+	/** Creates the actions that open a specific vanilla world. Iterates over the minecraft saves folder. */
+	void createWorldActions();
+
+	/** Creates the menu bar and connects its events. */
+	void createMenus();
+
+	/** Returns the name of the vanilla world in the specified path.
+	Reads the level.dat file for the name. Returns an empty string on failure. */
+	QString getWorldName(const AString & a_Path);
+
+	/** Opens the generator setup pane, if not already open, and loads the specified INI file to it. */
+	void openGeneratorSetup(const AString & a_IniFileName);
+
+	/** Closes and destroys the generator setup pane, if there is one. */
+	void closeGeneratorSetup();
+};
+
+
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/QtBiomeVisualiser.cpp b/Tools/QtBiomeVisualiser/QtBiomeVisualiser.cpp
new file mode 100644
index 000000000..f41cdcfb2
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/QtBiomeVisualiser.cpp
@@ -0,0 +1,20 @@
+#include "Globals.h"
+#include "MainWindow.h"
+#include <QApplication>
+
+
+
+
+
+int main(int argc, char *argv[])
+{
+	QApplication a(argc, argv);
+	MainWindow w;
+	w.show();
+
+	return a.exec();
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/QtBiomeVisualiser.pro b/Tools/QtBiomeVisualiser/QtBiomeVisualiser.pro
new file mode 100644
index 000000000..9e5d1303c
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/QtBiomeVisualiser.pro
@@ -0,0 +1,100 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2014-09-11T15:22:43
+#
+#-------------------------------------------------
+
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+TARGET = QtBiomeVisualiser
+TEMPLATE = app
+
+
+SOURCES +=\
+		MainWindow.cpp \
+    BiomeView.cpp \
+    ../../src/Generating/BioGen.cpp \
+    ../../src/VoronoiMap.cpp \
+    ../../src/Noise.cpp \
+    ../../src/StringUtils.cpp \
+    ../../src/LoggerListeners.cpp \
+    ../../src/Logger.cpp \
+    ../../lib/inifile/iniFile.cpp \
+    ../../src/OSSupport/File.cpp \
+    ../../src/OSSupport/CriticalSection.cpp \
+    ../../src/OSSupport/IsThread.cpp \
+    ../../src/BiomeDef.cpp \
+    ChunkCache.cpp \
+    ChunkSource.cpp \
+    ChunkLoader.cpp \
+    ../../src/StringCompression.cpp \
+    ../../src/WorldStorage/FastNBT.cpp \
+    ../../lib/zlib/adler32.c \
+    ../../lib/zlib/compress.c \
+    ../../lib/zlib/crc32.c \
+    ../../lib/zlib/deflate.c \
+    ../../lib/zlib/gzclose.c \
+    ../../lib/zlib/gzlib.c \
+    ../../lib/zlib/gzread.c \
+    ../../lib/zlib/gzwrite.c \
+    ../../lib/zlib/infback.c \
+    ../../lib/zlib/inffast.c \
+    ../../lib/zlib/inflate.c \
+    ../../lib/zlib/inftrees.c \
+    ../../lib/zlib/trees.c \
+    ../../lib/zlib/uncompr.c \
+    ../../lib/zlib/zutil.c \
+    GeneratorSetup.cpp \
+    QtBiomeVisualiser.cpp \
+    QtChunk.cpp
+
+HEADERS  += MainWindow.h \
+		Globals.h \
+		BiomeView.h \
+    ../../src/Generating/BioGen.h \
+    ../../src/VoronoiMap.h \
+    ../../src/Noise.h \
+    ../../src/StringUtils.h \
+    ../../src/LoggerListeners.h \
+    ../../src/Logger.h \
+    ../../lib/inifile/iniFile.h \
+    ../../src/OSSupport/File.h \
+    ../../src/OSSupport/CriticalSection.h \
+    ../../src/OSSupport/IsThread.h \
+    ../../src/BiomeDef.h \
+    ChunkCache.h \
+    ChunkSource.h \
+    ChunkLoader.h \
+    ../../src/StringCompression.h \
+    ../../src/WorldStorage/FastNBT.h \
+    ../../lib/zlib/crc32.h \
+    ../../lib/zlib/deflate.h \
+    ../../lib/zlib/gzguts.h \
+    ../../lib/zlib/inffast.h \
+    ../../lib/zlib/inffixed.h \
+    ../../lib/zlib/inflate.h \
+    ../../lib/zlib/inftrees.h \
+    ../../lib/zlib/trees.h \
+    ../../lib/zlib/zconf.h \
+    ../../lib/zlib/zlib.h \
+    ../../lib/zlib/zutil.h \
+    GeneratorSetup.h \
+    QtChunk.h
+
+INCLUDEPATH += $$_PRO_FILE_PWD_ \
+	$$_PRO_FILE_PWD_/../../lib \
+	$$_PRO_FILE_PWD_/../../lib/jsoncpp/include \
+	$$_PRO_FILE_PWD_/../../lib/polarssl/include \
+	$$_PRO_FILE_PWD_/../../lib/sqlite \
+	$$_PRO_FILE_PWD_/../../lib/SQLiteCpp/include \
+	$$_PRO_FILE_PWD_/../../
+
+
+
+CONFIG += C++11
+
+OTHER_FILES +=
+
+
diff --git a/Tools/QtBiomeVisualiser/QtChunk.cpp b/Tools/QtBiomeVisualiser/QtChunk.cpp
new file mode 100644
index 000000000..031aa3654
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/QtChunk.cpp
@@ -0,0 +1,190 @@
+#include "Globals.h"
+#include "QtChunk.h"
+
+
+
+
+
+/** Map for converting biome values to colors. Initialized from biomeColors[]. */
+static uchar biomeToColor[256 * 4];
+
+/** Map for converting biome values to colors. Used to initialize biomeToColor[].*/
+static struct
+{
+	EMCSBiome m_Biome;
+	uchar m_Color[3];
+} biomeColors[] =
+{
+	{ biOcean,                { 0x00, 0x00, 0x70 }, },
+	{ biPlains,               { 0x8d, 0xb3, 0x60 }, },
+	{ biDesert,               { 0xfa, 0x94, 0x18 }, },
+	{ biExtremeHills,         { 0x60, 0x60, 0x60 }, },
+	{ biForest,               { 0x05, 0x66, 0x21 }, },
+	{ biTaiga,                { 0x0b, 0x66, 0x59 }, },
+	{ biSwampland,            { 0x2f, 0xff, 0xda }, },
+	{ biRiver,                { 0x30, 0x30, 0xaf }, },
+	{ biHell,                 { 0x7f, 0x00, 0x00 }, },
+	{ biSky,                  { 0x00, 0x7f, 0xff }, },
+	{ biFrozenOcean,          { 0xa0, 0xa0, 0xdf }, },
+	{ biFrozenRiver,          { 0xa0, 0xa0, 0xff }, },
+	{ biIcePlains,            { 0xff, 0xff, 0xff }, },
+	{ biIceMountains,         { 0xa0, 0xa0, 0xa0 }, },
+	{ biMushroomIsland,       { 0xff, 0x00, 0xff }, },
+	{ biMushroomShore,        { 0xa0, 0x00, 0xff }, },
+	{ biBeach,                { 0xfa, 0xde, 0x55 }, },
+	{ biDesertHills,          { 0xd2, 0x5f, 0x12 }, },
+	{ biForestHills,          { 0x22, 0x55, 0x1c }, },
+	{ biTaigaHills,           { 0x16, 0x39, 0x33 }, },
+	{ biExtremeHillsEdge,     { 0x7f, 0x8f, 0x7f }, },
+	{ biJungle,               { 0x53, 0x7b, 0x09 }, },
+	{ biJungleHills,          { 0x2c, 0x42, 0x05 }, },
+
+	{ biJungleEdge,           { 0x62, 0x8b, 0x17 }, },
+	{ biDeepOcean,            { 0x00, 0x00, 0x30 },	},
+	{ biStoneBeach,           { 0xa2, 0xa2, 0x84 },	},
+	{ biColdBeach,            { 0xfa, 0xf0, 0xc0 },	},
+	{ biBirchForest,          { 0x30, 0x74, 0x44 },	},
+	{ biBirchForestHills,     { 0x1f, 0x5f, 0x32 },	},
+	{ biRoofedForest,         { 0x40, 0x51, 0x1a },	},
+	{ biColdTaiga,            { 0x31, 0x55, 0x4a },	},
+	{ biColdTaigaHills,       { 0x59, 0x7d, 0x72 },	},
+	{ biMegaTaiga,            { 0x59, 0x66, 0x51 },	},
+	{ biMegaTaigaHills,       { 0x59, 0x66, 0x59 },	},
+	{ biExtremeHillsPlus,     { 0x50, 0x70, 0x50 },	},
+	{ biSavanna,              { 0xbd, 0xb2, 0x5f },	},
+	{ biSavannaPlateau,       { 0xa7, 0x9d, 0x64 },	},
+	{ biMesa,                 { 0xd9, 0x45, 0x15 },	},
+	{ biMesaPlateauF,         { 0xb0, 0x97, 0x65 },	},
+	{ biMesaPlateau,          { 0xca, 0x8c, 0x65 },	},
+
+	// M variants:
+	{ biSunflowerPlains,      { 0xb5, 0xdb, 0x88 }, },
+	{ biDesertM,              { 0xff, 0xbc, 0x40 }, },
+	{ biExtremeHillsM,        { 0x88, 0x88, 0x88 }, },
+	{ biFlowerForest,         { 0x2d, 0x8e, 0x49 }, },
+	{ biTaigaM,               { 0x33, 0x8e, 0x81 }, },
+	{ biSwamplandM,           { 0x07, 0xf9, 0xb2 }, },
+	{ biIcePlainsSpikes,      { 0xb4, 0xdc, 0xdc }, },
+	{ biJungleM,              { 0x7b, 0xa3, 0x31 }, },
+	{ biJungleEdgeM,          { 0x62, 0x8b, 0x17 }, },
+	{ biBirchForestM,         { 0x58, 0x9c, 0x6c }, },
+	{ biBirchForestHillsM,    { 0x47, 0x87, 0x5a }, },
+	{ biRoofedForestM,        { 0x68, 0x79, 0x42 }, },
+	{ biColdTaigaM,           { 0x24, 0x3f, 0x36 }, },
+	{ biMegaSpruceTaiga,      { 0x45, 0x4f, 0x3e }, },
+	{ biMegaSpruceTaigaHills, { 0x45, 0x4f, 0x4e }, },
+	{ biExtremeHillsPlusM,    { 0x78, 0x98, 0x78 }, },
+	{ biSavannaM,             { 0xe5, 0xda, 0x87 }, },
+	{ biSavannaPlateauM,      { 0xa7, 0x9d, 0x74 }, },
+	{ biMesaBryce,            { 0xff, 0x6d, 0x3d }, },
+	{ biMesaPlateauFM,        { 0xd8, 0xbf, 0x8d }, },
+	{ biMesaPlateauM,         { 0xf2, 0xb4, 0x8d }, },
+} ;
+
+
+
+
+
+static class BiomeColorsInitializer
+{
+public:
+	BiomeColorsInitializer(void)
+	{
+		// Reset all colors to gray:
+		for (size_t i = 0; i < ARRAYCOUNT(biomeToColor); i++)
+		{
+			biomeToColor[i] = 0x7f;
+		}
+
+		// Set known biomes to their colors:
+		for (size_t i = 0; i < ARRAYCOUNT(biomeColors); i++)
+		{
+			uchar * color = &biomeToColor[4 * biomeColors[i].m_Biome];
+			color[0] = biomeColors[i].m_Color[2];
+			color[1] = biomeColors[i].m_Color[1];
+			color[2] = biomeColors[i].m_Color[0];
+			color[3] = 0xff;
+		}
+	}
+} biomeColorInitializer;
+
+
+
+
+
+/** Converts biomes in an array into the chunk image data. */
+static void biomesToImage(const cChunkDef::BiomeMap & a_Biomes, Chunk::Image & a_Image)
+{
+	// Make sure the two arrays are of the same size, compile-time.
+	// Note that a_Image is actually 4 items per pixel, so the array is 4 times bigger:
+	static const char Check1[4 * ARRAYCOUNT(a_Biomes) - ARRAYCOUNT(a_Image)      + 1] = {};
+	static const char Check2[ARRAYCOUNT(a_Image)      - 4 * ARRAYCOUNT(a_Biomes) + 1] = {};
+
+	// Convert the biomes into color:
+	for (size_t i = 0; i < ARRAYCOUNT(a_Biomes); i++)
+	{
+		a_Image[4 * i + 0] = biomeToColor[4 * a_Biomes[i] + 0];
+		a_Image[4 * i + 1] = biomeToColor[4 * a_Biomes[i] + 1];
+		a_Image[4 * i + 2] = biomeToColor[4 * a_Biomes[i] + 2];
+		a_Image[4 * i + 3] = biomeToColor[4 * a_Biomes[i] + 3];
+	}
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Chunk:
+
+Chunk::Chunk() :
+	m_IsValid(false)
+{
+}
+
+
+
+
+
+const uchar * Chunk::getImage(void) const
+{
+	ASSERT(m_IsValid);
+	return m_Image;
+}
+
+
+
+
+
+void Chunk::setBiomes(const cChunkDef::BiomeMap & a_Biomes)
+{
+	memcpy(m_Biomes, a_Biomes, sizeof(m_Biomes));
+	renderBiomes();
+	m_IsValid = true;
+}
+
+
+
+
+
+EMCSBiome Chunk::getBiome(int a_RelX, int a_RelZ)
+{
+	if (!m_IsValid)
+	{
+		return biInvalidBiome;
+	}
+	return cChunkDef::GetBiome(m_Biomes, a_RelX, a_RelZ);
+}
+
+
+
+
+
+void Chunk::renderBiomes()
+{
+	biomesToImage(m_Biomes, m_Image);
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/QtChunk.h b/Tools/QtBiomeVisualiser/QtChunk.h
new file mode 100644
index 000000000..74321577a
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/QtChunk.h
@@ -0,0 +1,51 @@
+#pragma once
+
+#include <qglobal.h>
+
+
+
+
+
+class Chunk
+{
+public:
+	/** The type used for storing image data for a chunk. */
+	typedef uchar Image[16 * 16 * 4];
+
+
+	Chunk(void);
+
+	/** Returns true iff the chunk data is valid - loaded or generated. */
+	bool isValid(void) const { return m_IsValid; }
+
+	/** Returns the image of the chunk's biomes. Assumes that the chunk is valid. */
+	const uchar * getImage(void) const;
+
+	/** Sets the biomes to m_Biomes and renders them into m_Image. */
+	void setBiomes(const cChunkDef::BiomeMap & a_Biomes);
+
+	/** Returns the biome at the specified relative coords, or biInvalidBiome if not valid.
+	Coords must be valid inside this chunk. */
+	EMCSBiome getBiome(int a_RelX, int a_RelZ);
+
+protected:
+	/** Flag that specifies if the chunk data is valid - loaded or generated. */
+	bool m_IsValid;
+
+	/** Cached rendered image of this chunk's biomes. Updated in render(). */
+	Image m_Image;
+
+	/** Biomes comprising the chunk, in the X + 16 * Z ordering. */
+	cChunkDef::BiomeMap m_Biomes;
+
+
+	/** Renders biomes from m_Biomes into m_Image. */
+	void renderBiomes();
+};
+
+typedef std::shared_ptr<Chunk> ChunkPtr;
+
+
+
+
+