TITANIC: Added remaining CStarField methods

5 files changed, 103 insertions, 47 deletions

diff --git a/engines/titanic/star_control/fvector.h b/engines/titanic/star_control/fvector.h
index 8e1ba47a3e..a54e94dda7 100644
--- a/engines/titanic/star_control/fvector.h
+++ b/engines/titanic/star_control/fvector.h
@@ -63,6 +63,26 @@ public:
 	bool operator!=(const FVector &src) const {
 		return !operator==(src);
 	}
+
+	FVector operator+(const FVector &delta) const {
+		return FVector(_x + delta._x, _y + delta._y, _z + delta._z);
+	}
+
+	FVector operator-(const FVector &delta) const {
+		return FVector(_x - delta._x, _y - delta._y, _z - delta._z);
+	}
+
+	void operator+=(const FVector &delta) {
+		_x += delta._x;
+		_y += delta._y;
+		_z += delta._z;
+	}
+
+	void operator-=(const FVector &delta) {
+		_x -= delta._x;
+		_y -= delta._y;
+		_z -= delta._z;
+	}
 };
 
 } // End of namespace Titanic
diff --git a/engines/titanic/star_control/star_field.cpp b/engines/titanic/star_control/star_field.cpp
index 5501ab80cc..3a09be3e8a 100644
--- a/engines/titanic/star_control/star_field.cpp
+++ b/engines/titanic/star_control/star_field.cpp
@@ -23,6 +23,7 @@
 #include "titanic/star_control/star_field.h"
 #include "titanic/star_control/surface_area.h"
 #include "titanic/star_control/star_control_sub12.h"
+#include "titanic/titanic.h"
 
 namespace Titanic {
 
@@ -211,8 +212,8 @@ double CStarField::fn5(CSurfaceArea *surfaceArea, CStarControlSub12 *sub12,
 }
 
 void CStarField::fn6(CVideoSurface *surface, CStarControlSub12 *sub12) {
-		CSurfaceArea surfaceArea(surface);
-	// TODO
+	CSurfaceArea surfaceArea(surface);
+	_sub8.fn1(this, &surfaceArea, sub12);
 }
 
 void CStarField::fn7() {
@@ -241,4 +242,15 @@ bool CStarField::mouseButtonDown(CVideoSurface *surface, CStarControlSub12 *sub1
 	}
 }
 
+const CBaseStarEntry *CStarField::getRandomStar() const {
+	if (_data.empty())
+		return nullptr;
+
+	return getDataPtr(g_vm->getRandomNumber(_data.size() - 1));
+}
+
+const CBaseStarEntry *CStarField::getStar(int index) const {
+	return (index < 0 || index >= (int)_data.size()) ? nullptr : getDataPtr(index);
+}
+
 } // End of namespace Titanic
diff --git a/engines/titanic/star_control/star_field.h b/engines/titanic/star_control/star_field.h
index 4eb955d927..34f11719d3 100644
--- a/engines/titanic/star_control/star_field.h
+++ b/engines/titanic/star_control/star_field.h
@@ -117,6 +117,16 @@ public:
 	 */
 	bool mouseButtonDown(CVideoSurface *surface, CStarControlSub12 *sub12,
 		int flags, const Common::Point &pt);
+
+	/**
+	 * Gets a random star
+	 */
+	const CBaseStarEntry *getRandomStar() const;
+
+	/**
+	 * Gets a specified star
+	 */
+	const CBaseStarEntry *getStar(int index) const;
 };
 
 } // End of namespace Titanic
diff --git a/engines/titanic/star_control/star_view.cpp b/engines/titanic/star_control/star_view.cpp
index e717206e55..836de0f5a4 100644
--- a/engines/titanic/star_control/star_view.cpp
+++ b/engines/titanic/star_control/star_view.cpp
@@ -282,7 +282,7 @@ void CStarView::fn3(bool fadeIn) {
 
 void CStarView::fn4() {
 	FVector v1, v2;
-	randomizeVectors2(&v1, &v2);
+	randomizeVectors2(v1, v2);
 	_sub12.setPosition(v1);
 	_sub12.proc5(v2);
 }
@@ -296,7 +296,25 @@ void CStarView::fn6() {
 }
 
 void CStarView::fn7() {
-	// TODO
+	const CBaseStarEntry *star = _starField->getRandomStar();
+	if (star) {
+		FVector v1, v2;
+		randomizeVectors3(v1, v2);
+		v2 += star->_position;
+		_sub12.setPosition(v2);
+		_sub12.proc5(v1);
+	}
+}
+
+void CStarView::fn19(int index) {
+	const CBaseStarEntry *star = _starField->getStar(index);
+	if (star) {
+		FVector v1, v2;
+		randomizeVectors3(v1, v2);
+		v1 += star->_position;
+		_sub12.setPosition(v1);
+		_sub12.proc5(v2);
+	}
 }
 
 void CStarView::fn8() {
@@ -342,7 +360,7 @@ void CStarView::fn14() {
 
 void CStarView::setHasReference() {
 	FVector v1, v2;
-	randomizeVectors1(&v1, &v2);
+	randomizeVectors1(v1, v2);
 
 	_sub13.setPosition(v1);
 	_sub13.fn11(v2);
@@ -388,60 +406,56 @@ void CStarView::fn18(CStarControlSub12 *sub12) {
 	}
 }
 
-void CStarView::fn19(int v) {
-	// TODO
-}
-
-void CStarView::randomizeVectors1(FVector *v1, FVector *v2) {
-	v1->_x = g_vm->getRandomFloat() * -4096.0 - 3072.0;
-	v1->_y = g_vm->getRandomFloat() * -4096.0 - 3072.0;
-	v1->_z = g_vm->getRandomFloat() * -4096.0 - 3072.0;
+void CStarView::randomizeVectors1(FVector &v1, FVector &v2) {
+	v1._x = g_vm->getRandomFloat() * -4096.0 - 3072.0;
+	v1._y = g_vm->getRandomFloat() * -4096.0 - 3072.0;
+	v1._z = g_vm->getRandomFloat() * -4096.0 - 3072.0;
 
 	double vx = g_vm->getRandomFloat() * 8192.0;
 	double vy = g_vm->getRandomFloat() * 1024.0;
-	vx -= v1->_x;
-	vy -= v1->_y;
+	vx -= v1._x;
+	vy -= v1._y;
 	
-	v2->_x = vx;
-	v2->_y = vy;
-	v2->_z = -v1->_z;
-	v2->fn3();
+	v2._x = vx;
+	v2._y = vy;
+	v2._z = -v1._z;
+	v2.fn3();
 }
 
-void CStarView::randomizeVectors2(FVector *v1, FVector *v2) {
-	v1->_x = 3072.0 - g_vm->getRandomFloat() * -4096.0;
-	v1->_y = 3072.0 - g_vm->getRandomFloat() * -4096.0;
-	v1->_z = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+void CStarView::randomizeVectors2(FVector &v1, FVector &v2) {
+	v1._x = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+	v1._y = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+	v1._z = 3072.0 - g_vm->getRandomFloat() * -4096.0;
 
 	// TODO: Doublecheck
-	v2->_x = -v1->_x;
-	v2->_y = -v1->_y;
-	v2->_z = -v1->_z;
-	v2->fn3();
+	v2._x = -v1._x;
+	v2._y = -v1._y;
+	v2._z = -v1._z;
+	v2.fn3();
 }
 
-void CStarView::randomizeVectors3(FVector *v1, FVector *v2) {
-	v1->_x = 3072.0 - g_vm->getRandomFloat() * -4096.0;
-	v1->_y = 3072.0 - g_vm->getRandomFloat() * -4096.0;
-	v1->_z = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+void CStarView::randomizeVectors3(FVector &v1, FVector &v2) {
+	v1._x = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+	v1._y = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+	v1._z = 3072.0 - g_vm->getRandomFloat() * -4096.0;
 
 	// TODO: Doublecheck
-	v2->_x = -v1->_x;
-	v2->_y = -v1->_y;
-	v2->_z = -v1->_z;
-	v2->fn3();
+	v2._x = -v1._x;
+	v2._y = -v1._y;
+	v2._z = -v1._z;
+	v2.fn3();
 }
 
-void CStarView::randomizeVectors4(FVector *v1, FVector *v2) {
-	v1->_x = 3072.0 - g_vm->getRandomFloat() * -4096.0;
-	v1->_y = 3072.0 - g_vm->getRandomFloat() * -4096.0;
-	v1->_z = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+void CStarView::randomizeVectors4(FVector &v1, FVector &v2) {
+	v1._x = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+	v1._y = 3072.0 - g_vm->getRandomFloat() * -4096.0;
+	v1._z = 3072.0 - g_vm->getRandomFloat() * -4096.0;
 
 	// TODO: Doublecheck
-	v2->_x = -v1->_x;
-	v2->_y = -v1->_y;
-	v2->_z = -v1->_z;
-	v2->fn3();
+	v2._x = -v1._x;
+	v2._y = -v1._y;
+	v2._z = -v1._z;
+	v2.fn3();
 }
 void CStarView::resizeSurface(CScreenManager *scrManager, int width, int height,
 		CVideoSurface **surface) {
diff --git a/engines/titanic/star_control/star_view.h b/engines/titanic/star_control/star_view.h
index e2978e6da0..0e271ec1ce 100644
--- a/engines/titanic/star_control/star_view.h
+++ b/engines/titanic/star_control/star_view.h
@@ -57,10 +57,10 @@ private:
 	void fn18(CStarControlSub12 *sub12);
 	void fn19(int v);
 
-	void randomizeVectors1(FVector *v1, FVector *v2);
-	void randomizeVectors2(FVector *v1, FVector *v2);
-	void randomizeVectors3(FVector *v1, FVector *v2);
-	void randomizeVectors4(FVector *v1, FVector *v2);
+	void randomizeVectors1(FVector &v1, FVector &v2);
+	void randomizeVectors2(FVector &v1, FVector &v2);
+	void randomizeVectors3(FVector &v1, FVector &v2);
+	void randomizeVectors4(FVector &v1, FVector &v2);
 
 	/**
 	 * Handles resizing the surface