3 files changed, 21 insertions, 4 deletions
diff --git a/engines/titanic/star_control/star_control_sub13.cpp b/engines/titanic/star_control/star_control_sub13.cpp
index d7153d4a1a..ac247c503b 100644
--- a/engines/titanic/star_control/star_control_sub13.cpp
+++ b/engines/titanic/star_control/star_control_sub13.cpp
@@ -21,6 +21,7 @@
  */
 
 #include "titanic/star_control/star_control_sub13.h"
+#include "titanic/titanic.h"
 
 namespace Titanic {
 
@@ -156,7 +157,19 @@ void CStarControlSub13::set1C(double v) {
 
 void CStarControlSub13::fn12() {
 	_matrix.clear();
-	error("TODO: CStarControlSub13::fn12");
+
+	CStarControlSub6 m1(0, g_vm->getRandomNumber(359));
+	CStarControlSub6 m2(1, g_vm->getRandomNumber(359));
+	CStarControlSub6 m3(2, g_vm->getRandomNumber(359));
+	
+	CStarControlSub6 s1, s2;
+	CStarControlSub6 *s;
+	s = CStarControlSub6::setup(&s1, &m1, &m2);
+	s = CStarControlSub6::setup(&s2, s, &m3);
+
+	m1.copyFrom(*s);
+	_matrix.fn2(&m1);
+	_fieldD4 = 0;
 }
 
 void CStarControlSub13::fn13(StarMode mode, double v2) {
@@ -236,7 +249,10 @@ FVector CStarControlSub13::fn18(int index, const FVector &src) {
 }
 
 void CStarControlSub13::fn19(double *v1, double *v2, double *v3, double *v4) {
-	error("TODO: CStarControlSub13::fn19");
+	*v1 = _fieldC8 / _fieldCC;
+	*v2 = _fieldC8 / _fieldD0;
+	*v3 = _valArray[3];
+	*v4 = _valArray[4];
 }
 
 void CStarControlSub13::reset() {
diff --git a/engines/titanic/star_control/star_control_sub6.cpp b/engines/titanic/star_control/star_control_sub6.cpp
index 5d9034d616..b1dd9e43e3 100644
--- a/engines/titanic/star_control/star_control_sub6.cpp
+++ b/engines/titanic/star_control/star_control_sub6.cpp
@@ -114,7 +114,7 @@ void CStarControlSub6::copyFrom(const FMatrix &src) {
 	_row3 = src._row3;
 }
 
-void CStarControlSub6::setup(CStarControlSub6 *dest, const CStarControlSub6 *s2, const CStarControlSub6 *s3) {
+CStarControlSub6 *CStarControlSub6::setup(CStarControlSub6 *dest, const CStarControlSub6 *s2, const CStarControlSub6 *s3) {
 	CStarControlSub6 &d = *dest;
 
 	d._row1._x = s3->_row1._x * s2->_row1._x
@@ -156,6 +156,7 @@ void CStarControlSub6::setup(CStarControlSub6 *dest, const CStarControlSub6 *s2,
 		+ s2->_vector._z * s3->_row3._z
 		+ s2->_vector._x * s3->_row1._z
 		+ s3->_vector._z;
+	return dest;
 }
 
 void CStarControlSub6::fn1(CStarControlSub6 *sub6) {
diff --git a/engines/titanic/star_control/star_control_sub6.h b/engines/titanic/star_control/star_control_sub6.h
index b1c829c884..572ac4a4f1 100644
--- a/engines/titanic/star_control/star_control_sub6.h
+++ b/engines/titanic/star_control/star_control_sub6.h
@@ -48,7 +48,7 @@ public:
 	/**
 	 * Sets up a passed instance from the specified two other ones
 	 */
-	static void setup(CStarControlSub6 *dest, const CStarControlSub6 *s2, const CStarControlSub6 *s3);
+	static CStarControlSub6 *setup(CStarControlSub6 *dest, const CStarControlSub6 *s2, const CStarControlSub6 *s3);
 
 	/**
 	 * Sets the default data