TITANIC: Prevent locking/unlocking sounds in photoview

In scummvm and the original engine if you try to
unlock/lock stars in photoview/skyview then the
stars will not unlock/lock, but the sounds
associated with unlocking and locking were playing.
Giving a false impression that the
locking/unlocking was happening.

The sounds no longer play when in photoview.

engines/titanic/game/nav_helmet.cpp

@@ -22,6 +22,7 @@
 
 #include "titanic/game/nav_helmet.h"
 #include "titanic/pet_control/pet_control.h"
+#include "titanic/star_control/star_control.h"
 
 namespace Titanic {
 
@@ -113,12 +114,28 @@ bool CNavHelmet::PETPhotoOnOffMsg(CPETPhotoOnOffMsg *msg) {
 
 bool CNavHelmet::PETStarFieldLockMsg(CPETStarFieldLockMsg *msg) {
 	if (_helmetOn) {
-		if (msg->_value) {
-			playSound("a#6.wav");
-			starFn(LOCK_STAR);
-		} else {
-			playSound("a#5.wav");
-			starFn(UNLOCK_STAR);
+		CPetControl *pet = getPetControl();
+		CStarControl *starControl = 0;
+		bool isStarFieldMode=false;
+
+		if (pet)
+			starControl = pet->getStarControl();
+
+		if (starControl)
+			isStarFieldMode = starControl->isStarFieldMode();
+
+		if (isStarFieldMode) {
+			// locking and unlocking only in starfield
+			// It already does this without the conditional
+			// but now it will also not play the sounds in
+			// photoview
+			if (msg->_value) {
+				playSound("a#6.wav");
+				starFn(LOCK_STAR);
+			} else {
+				playSound("a#5.wav");
+				starFn(UNLOCK_STAR);
+			}
 		}
 	}
 

engines/titanic/star_control/star_control.cpp

@@ -145,6 +145,18 @@ void CStarControl::newFrame() {
 	}
 }
 
+bool CStarControl::isStarFieldMode() {
+	if (!_petControl)
+		_petControl = getPetControl();
+
+	if (_petControl) {
+
+		if (_starField.getMode() == MODE_STARFIELD)
+			return true;
+	}
+	return false;
+}
+
 void CStarControl::doAction(StarControlAction action) {
 	if (!_enabled)
 		return;

engines/titanic/star_control/star_control.h

@@ -69,6 +69,11 @@ public:
 	 */
 	virtual void draw(CScreenManager *screenManager);
 
+	/**
+	 * _starField is currently showing the starfield
+	 */
+	bool isStarFieldMode();
+
 	/**
 	 * Does an action in the star control
 	 */