10 files changed, 307 insertions, 39 deletions

diff --git a/Tools/QtBiomeVisualiser/BiomeView.cpp b/Tools/QtBiomeVisualiser/BiomeView.cpp
index be01fd104..bbaccb369 100644
--- a/Tools/QtBiomeVisualiser/BiomeView.cpp
+++ b/Tools/QtBiomeVisualiser/BiomeView.cpp
@@ -8,11 +8,19 @@
 
 
 
+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_Zoom(1),
+	m_IsMouseDragging(false),
+	m_MouseWheelDelta(0)
 {
 	// Create the image used for undefined chunks:
 	int offset = 0;
@@ -33,6 +41,9 @@ BiomeView::BiomeView(QWidget * parent) :
 
 	// Add a chunk-update callback mechanism:
 	connect(&m_Cache, SIGNAL(chunkAvailable(int, int)), this, SLOT(chunkAvailable(int, int)));
+
+	// Allow keyboard interaction:
+	setFocusPolicy(Qt::StrongFocus);
 }
 
 
@@ -120,6 +131,21 @@ void BiomeView::chunkAvailable(int a_ChunkX, int a_ChunkZ)
 
 
 
+void BiomeView::reload()
+{
+	if (!hasData())
+	{
+		return;
+	}
+	m_Cache.reload();
+
+	redraw();
+}
+
+
+
+
+
 void BiomeView::drawChunk(int a_ChunkX, int a_ChunkZ)
 {
 	if (!hasData())
@@ -236,9 +262,164 @@ void BiomeView::paintEvent(QPaintEvent * a_Event)
 
 
 
-void BiomeView::queueChunkRender(ChunkPtr a_Chunk)
+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 (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;
+	}
+
+	// TODO: Update the status bar info for the biome currently pointed at
+}
+
+
+
+
+
+void BiomeView::mouseReleaseEvent(QMouseEvent *)
+{
+	m_IsMouseDragging = false;
+}
+
+
+
+
+
+void BiomeView::wheelEvent(QWheelEvent * a_Event)
+{
+	m_MouseWheelDelta += a_Event->delta();
+	while (m_MouseWheelDelta >= DELTA_STEP)
+	{
+		increaseZoom();
+		m_MouseWheelDelta -= DELTA_STEP;
+	}
+	while (m_MouseWheelDelta <= -DELTA_STEP)
+	{
+		decreaseZoom();
+		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:
+		{
+			increaseZoom();
+			break;
+		}
+
+		case Qt::Key_PageDown:
+		case Qt::Key_E:
+		{
+			decreaseZoom();
+			break;
+		}
+	}
+}
+
+
+
+
+
+void BiomeView::decreaseZoom()
 {
+	if (m_Zoom > 1.001)
+	{
+		m_Zoom--;
+		if (m_Zoom < 1.0)
+		{
+			// Just crossed the 100%, fixate the 100% threshold:
+			m_Zoom = 1.0;
+		}
+	}
+	else if (m_Zoom > 0.01)
+	{
+		m_Zoom = m_Zoom / 2;
+	}
+	redraw();
+}
+
+
 
+
+
+void BiomeView::increaseZoom()
+{
+	if (m_Zoom > 0.99)
+	{
+		if (m_Zoom > 20.0)
+		{
+			// Zoom too large
+			return;
+		}
+		m_Zoom++;
+	}
+	else
+	{
+		m_Zoom = m_Zoom * 2;
+		if (m_Zoom > 1.0)
+		{
+			// Just crossed the 100%, fixate the 100% threshold:
+			m_Zoom = 1.0;
+		}
+	}
+	redraw();
 }
 
 
diff --git a/Tools/QtBiomeVisualiser/BiomeView.h b/Tools/QtBiomeVisualiser/BiomeView.h
index c54c66491..f0521571d 100644
--- a/Tools/QtBiomeVisualiser/BiomeView.h
+++ b/Tools/QtBiomeVisualiser/BiomeView.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <QWidget>
+#include <memory>
 #include "ChunkCache.h"
 #include "ChunkSource.h"
 
@@ -33,12 +34,28 @@ public slots:
 	/** 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;
-	int m_Zoom;
+	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];
 
@@ -55,8 +72,26 @@ protected:
 	/** Paints the entire widget */
 	virtual void paintEvent(QPaintEvent *) override;
 
-	/** Queues the chunk for rendering. */
-	void queueChunkRender(ChunkPtr a_Chunk);
+	/** 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;
+
+	/** Decreases the zoom level and queues a redraw. */
+	void decreaseZoom();
+
+	/** Increases the zoom level and queues a redraw. */
+	void increaseZoom();
 };
 
 
diff --git a/Tools/QtBiomeVisualiser/ChunkCache.cpp b/Tools/QtBiomeVisualiser/ChunkCache.cpp
index b2230def0..05c267d30 100644
--- a/Tools/QtBiomeVisualiser/ChunkCache.cpp
+++ b/Tools/QtBiomeVisualiser/ChunkCache.cpp
@@ -76,6 +76,22 @@ void ChunkCache::setChunkSource(std::shared_ptr<ChunkSource> a_ChunkSource)
 
 
 
+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);
diff --git a/Tools/QtBiomeVisualiser/ChunkCache.h b/Tools/QtBiomeVisualiser/ChunkCache.h
index 0efa7fc39..8d198f02f 100644
--- a/Tools/QtBiomeVisualiser/ChunkCache.h
+++ b/Tools/QtBiomeVisualiser/ChunkCache.h
@@ -3,6 +3,7 @@
 #include <QObject>
 #include <QCache>
 #include <QMutex>
+#include <memory>
 
 
 
@@ -36,7 +37,10 @@ public:
 	void setChunkSource(std::shared_ptr<ChunkSource> a_ChunkSource);
 
 	/** Returns true iff the chunk source has been initialized. */
-	bool hasData(void) const { return (m_ChunkSource.get() != nullptr); }
+	bool hasData() const { return (m_ChunkSource.get() != nullptr); }
+
+	/** Reloads the current chunk source. */
+	void reload();
 
 signals:
 	void chunkAvailable(int a_ChunkX, int a_ChunkZ);
diff --git a/Tools/QtBiomeVisualiser/ChunkLoader.h b/Tools/QtBiomeVisualiser/ChunkLoader.h
index 3565434b9..4d026a45e 100644
--- a/Tools/QtBiomeVisualiser/ChunkLoader.h
+++ b/Tools/QtBiomeVisualiser/ChunkLoader.h
@@ -1,6 +1,8 @@
 #pragma once
+
 #include <QObject>
 #include <QRunnable>
+#include <memory>
 
 
 
diff --git a/Tools/QtBiomeVisualiser/ChunkSource.cpp b/Tools/QtBiomeVisualiser/ChunkSource.cpp
index 44dcf1fa7..2235816bc 100644
--- a/Tools/QtBiomeVisualiser/ChunkSource.cpp
+++ b/Tools/QtBiomeVisualiser/ChunkSource.cpp
@@ -1,6 +1,8 @@
 #include "Globals.h"
 #include "ChunkSource.h"
+#include <QThread>
 #include "Generating/BioGen.h"
+#include "inifile/iniFile.h"
 
 
 
@@ -101,9 +103,9 @@ public:
 		for (size_t i = 0; i < ARRAYCOUNT(biomeColors); i++)
 		{
 			uchar * color = &biomeToColor[4 * biomeColors[i].m_Biome];
-			color[0] = biomeColors[i].m_Color[0];
+			color[0] = biomeColors[i].m_Color[2];
 			color[1] = biomeColors[i].m_Color[1];
-			color[2] = biomeColors[i].m_Color[2];
+			color[2] = biomeColors[i].m_Color[0];
 			color[3] = 0xff;
 		}
 	}
@@ -118,8 +120,8 @@ static void biomesToImage(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];
+	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++)
@@ -138,9 +140,11 @@ static void biomesToImage(cChunkDef::BiomeMap & a_Biomes, Chunk::Image & a_Image
 ////////////////////////////////////////////////////////////////////////////////
 // BioGenSource:
 
-BioGenSource::BioGenSource(cBiomeGen * a_BiomeGen) :
-	m_BiomeGen(a_BiomeGen)
+BioGenSource::BioGenSource(QString a_WorldIniPath) :
+	m_WorldIniPath(a_WorldIniPath),
+	m_Mtx(QMutex::Recursive)
 {
+	reload();
 }
 
 
@@ -149,11 +153,11 @@ BioGenSource::BioGenSource(cBiomeGen * a_BiomeGen) :
 
 void BioGenSource::getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk)
 {
-	// TODO: To make use of multicore machines, we need multiple copies of the biomegen
-	// Right now we have only one, so we can let only one thread use it (hence the mutex)
-	QMutexLocker lock(&m_Mtx);
 	cChunkDef::BiomeMap biomes;
-	m_BiomeGen->GenBiomes(a_ChunkX, a_ChunkZ, biomes);
+	{
+		QMutexLocker lock(&m_Mtx);
+		m_BiomeGen->GenBiomes(a_ChunkX, a_ChunkZ, biomes);
+	}
 	Chunk::Image img;
 	biomesToImage(biomes, img);
 	a_DestChunk->setImage(img);
@@ -162,3 +166,19 @@ void BioGenSource::getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChu
 
 
 
+
+void BioGenSource::reload()
+{
+	cIniFile ini;
+	ini.ReadFile(m_WorldIniPath.toStdString());
+	int seed = ini.GetValueSetI("Seed", "Seed", 0);
+	bool unused = false;
+	QMutexLocker lock(&m_Mtx);
+	m_BiomeGen.reset(cBiomeGen::CreateBiomeGen(ini, seed, unused));
+	lock.unlock();
+	ini.WriteFile(m_WorldIniPath.toStdString());
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/ChunkSource.h b/Tools/QtBiomeVisualiser/ChunkSource.h
index d6eb2e3cb..868e4a144 100644
--- a/Tools/QtBiomeVisualiser/ChunkSource.h
+++ b/Tools/QtBiomeVisualiser/ChunkSource.h
@@ -1,4 +1,6 @@
 #pragma once
+#include <QString>
+#include <QMutex>
 #include "Chunk.h"
 
 
@@ -7,6 +9,8 @@
 
 // fwd:
 class cBiomeGen;
+typedef std::shared_ptr<cBiomeGen> cBiomeGenPtr;
+class cIniFile;
 
 
 
@@ -21,6 +25,9 @@ public:
 	/** 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;
 };
 
 
@@ -32,14 +39,21 @@ class BioGenSource :
 	public ChunkSource
 {
 public:
-	/** Constructs a new BioGenSource based on the biome generator given.
-	Takes ownership of a_BiomeGen */
-	BioGenSource(cBiomeGen * a_BiomeGen);
+	/** Constructs a new BioGenSource based on the biome generator that is defined in the specified world.ini file. */
+	BioGenSource(QString a_WorldIniPath);
 
+	// ChunkSource overrides:
 	virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) override;
+	virtual void reload(void) override;
 
 protected:
-	std::shared_ptr<cBiomeGen> m_BiomeGen;
+	/** Path to the world.ini file from which the m_WorldIni is regenerated on reload requests. */
+	QString m_WorldIniPath;
+
+	/** The generator used for generating biomes. */
+	std::unique_ptr<cBiomeGen> m_BiomeGen;
+
+	/** Guards m_BiomeGen against multithreaded access. */
 	QMutex m_Mtx;
 };
 
@@ -52,7 +66,9 @@ class AnvilSource :
 public:
 	// TODO
 
+	// ChunkSource overrides:
 	virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) override;
+	virtual void reload() override {}
 };
 
 
diff --git a/Tools/QtBiomeVisualiser/MainWindow.cpp b/Tools/QtBiomeVisualiser/MainWindow.cpp
index 8b98c0b0e..65d0ccf5e 100644
--- a/Tools/QtBiomeVisualiser/MainWindow.cpp
+++ b/Tools/QtBiomeVisualiser/MainWindow.cpp
@@ -16,11 +16,11 @@
 MainWindow::MainWindow(QWidget * parent) :
 	QMainWindow(parent)
 {
-	createActions();
-	createMenus();
-
 	m_BiomeView = new BiomeView(this);
 	setCentralWidget(m_BiomeView);
+
+	createActions();
+	createMenus();
 }
 
 
@@ -39,19 +39,7 @@ MainWindow::~MainWindow()
 void MainWindow::generate()
 {
 	QString worldIni = QFileDialog::getOpenFileName(this, tr("Open world.ini"), QString(), tr("world.ini (world.ini)"));
-	cIniFile ini;
-	if (!ini.ReadFile(worldIni.toStdString()))
-	{
-		return;
-	}
-	int seed = ini.GetValueSetI("Seed", "Seed", 0);
-	bool unused = false;
-	cBiomeGen * biomeGen = cBiomeGen::CreateBiomeGen(ini, seed, unused);
-	if (biomeGen == nullptr)
-	{
-		return;
-	}
-	m_BiomeView->setChunkSource(std::shared_ptr<BioGenSource>(new BioGenSource(biomeGen)));
+	m_BiomeView->setChunkSource(std::shared_ptr<BioGenSource>(new BioGenSource(worldIni)));
 	m_BiomeView->redraw();
 }
 
@@ -80,6 +68,11 @@ void MainWindow::createActions()
 	m_actOpen->setStatusTip(tr("Open an existing world and display its biomes"));
 	connect(m_actOpen, SIGNAL(triggered()), this, SLOT(open()));
 
+	m_actReload = new QAction(tr("&Reload"), this);
+	m_actReload->setShortcut(tr("F5"));
+	m_actReload->setStatusTip(tr("Open an existing world and display its biomes"));
+	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()));
@@ -96,6 +89,8 @@ void MainWindow::createMenus()
 	mFile->addAction(m_actGen);
 	mFile->addAction(m_actOpen);
 	mFile->addSeparator();
+	mFile->addAction(m_actReload);
+	mFile->addSeparator();
 	mFile->addAction(m_actExit);
 }
 
diff --git a/Tools/QtBiomeVisualiser/MainWindow.h b/Tools/QtBiomeVisualiser/MainWindow.h
index f6028aff1..b37bf4120 100644
--- a/Tools/QtBiomeVisualiser/MainWindow.h
+++ b/Tools/QtBiomeVisualiser/MainWindow.h
@@ -29,6 +29,7 @@ protected:
 	// Actions:
 	QAction * m_actGen;
 	QAction * m_actOpen;
+	QAction * m_actReload;
 	QAction * m_actExit;
 
 
diff --git a/Tools/QtBiomeVisualiser/QtBiomeVisualiser.pro b/Tools/QtBiomeVisualiser/QtBiomeVisualiser.pro
index 0329d5607..e6b65e628 100644
--- a/Tools/QtBiomeVisualiser/QtBiomeVisualiser.pro
+++ b/Tools/QtBiomeVisualiser/QtBiomeVisualiser.pro
@@ -55,8 +55,6 @@ INCLUDEPATH += $$_PRO_FILE_PWD_ \
 	$$_PRO_FILE_PWD_/../../lib
 
 
-CONFIG += STATIC
-
-
+CONFIG += C++11