TITANIC: Implemented CStarView MouseMoveMsg

engines/titanic/star_control/fpoint.cpp

@@ -25,13 +25,14 @@
 
 namespace Titanic {
 
-void FPoint::normalize() {
+double FPoint::normalize() {
 	double hyp = sqrt(_x * _x + _y * _y);
 	assert(hyp != 0.0);
 
 	double fraction = 1.0 / hyp;
 	_x *= fraction;
 	_y *= fraction;
+	return hyp;
 }
 
 } // End of namespace Titanic

engines/titanic/star_control/fpoint.h

@@ -23,6 +23,8 @@
 #ifndef TITANIC_FPOINT_H
 #define TITANIC_FPOINT_H
 
+#include "common/rect.h"
+
 namespace Titanic {
 
 /**
@@ -34,6 +36,7 @@ class FPoint {
 public:
 	FPoint() : _x(0), _y(0) {}
 	FPoint(double x, double y) : _x(x), _y(y) {}
+	FPoint(const Common::Point &pt) : _x(pt.x), _y(pt.y) {}
 
 	bool operator==(const FPoint &p) const { return _x == p._x && _y == p._y; }
 	bool operator!=(const FPoint &p) const { return _x != p._x || _y != p._y; }
@@ -54,7 +57,7 @@ class FPoint {
 	 * Normalises the X and Y coordinates as fractions relative to the
 	 * value of the hypotenuse formed by a triangle from the origin (0,0)
 	 */
-	void normalize();
+	double normalize();
 };
 
 } // End of namespace Titanic

engines/titanic/star_control/star_control_sub12.cpp

@@ -216,8 +216,8 @@ FVector CStarControlSub12::proc31(int index, const FVector &v) {
 	return _sub13.fn18(index, v);
 }
 
-void CStarControlSub12::proc32(double v1, double v2) {
-	error("TODO: CStarControlSub12::proc32");
+void CStarControlSub12::setViewportPosition(const FPoint &pt) {
+	// TODO
 }
 
 bool CStarControlSub12::setArrayVector(const FVector &v) {

engines/titanic/star_control/star_control_sub12.h

@@ -25,6 +25,7 @@
 
 #include "titanic/support/simple_file.h"
 #include "titanic/star_control/fmatrix.h"
+#include "titanic/star_control/fpoint.h"
 #include "titanic/star_control/star_control_sub13.h"
 #include "titanic/star_control/star_control_sub20.h"
 
@@ -93,7 +94,12 @@ class CStarControlSub12 {
 	virtual FVector proc29(const FVector &v);
 	virtual FVector proc30(int index, const FVector &v);
 	virtual FVector proc31(int index, const FVector &v);
-	virtual void proc32(double v1, double v2);
+
+	/**
+	 * Sets the viewport position within the starfield
+	 */
+	virtual void setViewportPosition(const FPoint &pt);
+
 	virtual int getCurrentIndex() const { return _currentIndex; }
 	virtual bool setArrayVector(const FVector &v);
 	virtual bool proc35();

engines/titanic/star_control/star_control_sub2.cpp

@@ -24,9 +24,9 @@
 
 namespace Titanic {
 
-bool CStarControlSub2::proc3(int v1) {
+bool CStarControlSub2::loadYale(int v1) {
 	clear();
-	// TODO
+	error("Original loadYale not supported");
 	return true;
 }
 

engines/titanic/star_control/star_control_sub2.h

@@ -31,7 +31,7 @@ class CStarControlSub2: public CBaseStar {
 public:
 	virtual ~CStarControlSub2() {}
 
-	virtual bool proc3(int v1);
+	virtual bool loadYale(int v1);
 	virtual bool proc4(int v1, int v2, int v3, int v4, int v5);
 	virtual bool loadStar();
 	virtual bool proc7(int v1, int v2);

engines/titanic/star_control/star_view.cpp

@@ -31,9 +31,8 @@ namespace Titanic {
 CStarView::CStarView() : _sub12(nullptr, nullptr), _sub13((void *)nullptr),
 		_owner(nullptr), _starField(nullptr), _videoSurface(nullptr), _field118(0),
 		_videoSurface2(nullptr), _homePhotoMask(nullptr),
-		_field218(0), _field21C(0) {
-	CStar20Data data = { 0, 0, 0x47C35000, 0, 0x41A00000,
-		0x3F800000, 0x3F800000, 0x3F800000 };
+		_field218(0), _showingPhoto(false) {
+	CStar20Data data = { 0, 0, 100000.0, 0, 20.0, 1.0, 1.0, 1.0 };
 
 	_sub12.proc3(&data);
 }
@@ -47,7 +46,7 @@ void CStarView::load(SimpleFile *file, int param) {
 			_sub13.load(file, 0);
 
 		_field218 = file->readNumber();
-		_field21C = file->readNumber();
+		_showingPhoto = file->readNumber();
 	}
 }
 
@@ -59,7 +58,7 @@ void CStarView::save(SimpleFile *file, int indent) {
 		_sub13.save(file, indent);
 
 	file->writeNumberLine(_field218, indent);
-	file->writeNumberLine(_field21C, indent);
+	file->writeNumberLine(_showingPhoto, indent);
 }
 
 void CStarView::setup(CScreenManager *screenManager, CStarField *starField, CStarControl *starControl) {
@@ -76,13 +75,13 @@ void CStarView::draw(CScreenManager *screenManager) {
 		return;
 
 	if (_fader.isActive()) {
-		CVideoSurface *surface = _field21C ? _videoSurface2 : _videoSurface;
+		CVideoSurface *surface = _showingPhoto ? _videoSurface2 : _videoSurface;
 		surface = _fader.fade(screenManager, surface);
 		screenManager->blitFrom(SURFACE_PRIMARY, surface);
 	} else {
 		Point destPos(20, 10);
 
-		if (_field21C) {
+		if (_showingPhoto) {
 			screenManager->blitFrom(SURFACE_PRIMARY, _videoSurface2, &destPos);
 
 			if (!_homePhotoMask && _owner) {
@@ -110,8 +109,28 @@ void CStarView::MouseButtonDownMsg(int unused, const Point &pt) {
 	// TODO
 }
 
-void CStarView::MouseMoveMsg(int unused, const Point &pt) {
-	// TODO
+bool CStarView::MouseMoveMsg(int unused, const Point &pt) {
+	if (!_showingPhoto && (_fader._index < 0 || _fader._count >= 0)) {
+		FPoint fpt = pt;
+		FPoint centerPt(300.0, 170.0);
+
+		if (fpt != centerPt) {
+			double threshold = MIN(centerPt._x, centerPt._y) * 0.5;
+			FPoint tempPt = fpt - centerPt;
+
+			double distance = tempPt.normalize();
+			if (distance >= threshold) {
+				distance -= threshold;
+
+				FPoint relPt(tempPt._x * -2.0 * distance / threshold, 
+					tempPt._y * -2.0 * distance / threshold);
+				_sub12.setViewportPosition(relPt);
+				return true;
+			}
+		}
+	}
+
+	return false;
 }
 
 CErrorCode CStarView::KeyCharMsg(int key) {

engines/titanic/star_control/star_view.h

@@ -47,7 +47,7 @@ class CStarView {
 	CVideoSurface *_videoSurface2;
 	CGameObject *_homePhotoMask;
 	int _field218;
-	int _field21C;
+	bool _showingPhoto;
 #if 0
 	int _field210;
 #endif
@@ -86,7 +86,7 @@ class CStarView {
 	/**
 	 * Handles mouse move messages
 	 */
-	void MouseMoveMsg(int unused, const Point &pt);
+	bool MouseMoveMsg(int unused, const Point &pt);
 
 	/**
 	 * Handles keyboard messages