LAB: Make the use of nullptr consistent through the engine

engines/lab/anim.cpp

@@ -345,7 +345,7 @@ void Anim::readDiff(byte *buffer, bool playOnce, bool onlyDiffData) {
 		return;
 
 	for (_header = 0; _header < 8; _header++)
-		_rawDiffBM._planes[_header] = NULL;
+		_rawDiffBM._planes[_header] = nullptr;
 
 	if (_headerdata._fps)
 		_delayMicros = 1000 / _headerdata._fps;

engines/lab/dispman.cpp

@@ -310,7 +310,7 @@ int DisplayMan::longDrawMessage(const char *str) {
 	if (!str)
 		return 0;
 
-	_vm->_event->attachButtonList(NULL);
+	_vm->_event->attachButtonList(nullptr);
 	_vm->_event->mouseHide();
 
 	char newText[512];
@@ -993,7 +993,7 @@ void DisplayMan::doTransWipe(CloseDataPtr *closePtrList, char *filename) {
 		setPen(0);
 	}	// for j
 
-	if (filename == NULL)
+	if (!filename)
 		_vm->_curFileName = _vm->getPictName(closePtrList);
 	else if (filename[0] > ' ')
 		_vm->_curFileName = filename;

engines/lab/eventman.cpp

@@ -88,7 +88,7 @@ Button *EventManager::checkButtonHit(ButtonList *buttonList, Common::Point pos)
 		}
 	}
 
-	return NULL;
+	return nullptr;
 }
 
 void EventManager::attachButtonList(ButtonList *buttonList) {
@@ -129,7 +129,7 @@ EventManager::EventManager(LabEngine *vm) : _vm(vm) {
 void EventManager::mouseHandler(int flag, Common::Point pos) {
 	if (flag & 0x02) {
 		// Left mouse button click
-		Button *tmp = NULL;
+		Button *tmp = nullptr;
 		if (_screenButtonList)
 			tmp = checkButtonHit(_screenButtonList, _vm->_isHiRes ? pos : Common::Point(pos.x / 2, pos.y));
 

engines/lab/image.cpp

@@ -106,14 +106,14 @@ void Image::blitBitmap(uint16 xs, uint16 ys, Image *imDest,
  * Draws an image to the screen.
  */
 void Image::drawImage(uint16 x, uint16 y) {
-	blitBitmap(0, 0, NULL, x, y, _width, _height, false);
+	blitBitmap(0, 0, nullptr, x, y, _width, _height, false);
 }
 
 /**
  * Draws an image to the screen with transparency.
  */
 void Image::drawMaskImage(uint16 x, uint16 y) {
-	blitBitmap(0, 0, NULL, x, y, _width, _height, true);
+	blitBitmap(0, 0, nullptr, x, y, _width, _height, true);
 }
 
 /**

engines/lab/music.cpp

@@ -57,7 +57,7 @@ Music::Music(LabEngine *vm) : _vm(vm) {
 
 	_musicOn = false;
 	_loopSoundEffect = false;
-	_queuingAudioStream = NULL;
+	_queuingAudioStream = nullptr;
 	_lastMusicRoom = 1;
 	_doReset = true;
 	_waitTillFinished = false;
@@ -180,12 +180,11 @@ void Music::freeMusic() {
 	_musicOn = false;
 
 	_vm->_mixer->stopHandle(_musicHandle);
-	_queuingAudioStream = NULL;
+	_queuingAudioStream = nullptr;
-
 	_vm->_mixer->stopHandle(_sfxHandle);
 
 	delete _file;
-	_file = NULL;
+	_file = nullptr;
 }
 
 /**

engines/lab/resource.cpp

@@ -53,10 +53,10 @@ void Resource::readStaticText() {
 TextFont *Resource::getFont(const char *fileName) {
 	Common::File *dataFile = openDataFile(fileName, MKTAG('V', 'G', 'A', 'F'));
 
-	uint32 headerSize = 4L + 2L + 256 * 3 + 4L;
+	uint32 headerSize = 4 + 2 + 256 * 3 + 4;
 	uint32 fileSize = dataFile->size();
 	if (fileSize <= headerSize)
-		return NULL;
+		return nullptr;
 
 	_vm->_music->updateMusic();
 
@@ -247,9 +247,9 @@ RuleList *Resource::readRule(Common::File *file) {
 
 Action *Resource::readAction(Common::File *file) {
 	char c;
-	Action *action = NULL;
+	Action *action = nullptr;
-	Action *prev = NULL;
+	Action *prev = nullptr;
-	Action *head = NULL;
+	Action *head = nullptr;
 
 	do {
 		c = file->readByte();
@@ -276,7 +276,7 @@ Action *Resource::readAction(Common::File *file) {
 				action->_data = (byte *)readString(file);
 			}
 
-			action->_nextAction = NULL;
+			action->_nextAction = nullptr;
 			prev = action;
 		}
 	} while (c == 1);
@@ -286,9 +286,9 @@ Action *Resource::readAction(Common::File *file) {
 
 CloseData *Resource::readCloseUps(uint16 depth, Common::File *file) {
 	char c;
-	CloseData *closeup = NULL;
+	CloseData *closeup = nullptr;
-	CloseData *prev = NULL;
+	CloseData *prev = nullptr;
-	CloseData *head = NULL;
+	CloseData *head = nullptr;
 
 	do {
 		c = file->readByte();
@@ -308,7 +308,7 @@ CloseData *Resource::readCloseUps(uint16 depth, Common::File *file) {
 			closeup->_graphicName = readString(file);
 			closeup->_message = readString(file);
 			closeup->_subCloseUps = readCloseUps(depth + 1, file);
-			closeup->_nextCloseUp = NULL;
+			closeup->_nextCloseUp = nullptr;
 			prev = closeup;
 		}
 	} while (c != '\0');
@@ -318,9 +318,9 @@ CloseData *Resource::readCloseUps(uint16 depth, Common::File *file) {
 
 ViewData *Resource::readView(Common::File *file) {
 	char c;
-	ViewData *view = NULL;
+	ViewData *view = nullptr;
-	ViewData *prev = NULL;
+	ViewData *prev = nullptr;
-	ViewData *head = NULL;
+	ViewData *head = nullptr;
 
 	do {
 		c = file->readByte();
@@ -334,7 +334,7 @@ ViewData *Resource::readView(Common::File *file) {
 			view->_condition = readConditions(file);
 			view->_graphicName = readString(file);
 			view->_closeUps = readCloseUps(0, file);
-			view->_nextCondition = NULL;
+			view->_nextCondition = nullptr;
 			prev = view;
 		}
 	} while (c == 1);

engines/lab/special.cpp

@@ -312,7 +312,7 @@ void LabEngine::doJournal() {
 	drawJournal(0, true);
 	_event->mouseShow();
 	processJournal();
-	_event->attachButtonList(NULL);
+	_event->attachButtonList(nullptr);
 	_graphics->fade(false, 0);
 	_event->mouseHide();
 
@@ -400,7 +400,7 @@ void LabEngine::processMonitor(char *ntext, TextFont *monitorFont, bool isIntera
 
 	while (1) {
 		if (isInteractive) {
-			if (_closeDataPtr == NULL)
+			if (!_closeDataPtr)
 				_closeDataPtr = startClosePtr;
 
 			const char *test;
@@ -410,7 +410,7 @@ void LabEngine::processMonitor(char *ntext, TextFont *monitorFont, bool isIntera
 				test = _closeDataPtr->_graphicName;
 
 			if (strcmp(test, _monitorTextFilename)) {
-				_monitorPage      = 0;
+				_monitorPage = 0;
 				_monitorTextFilename = test;
 
 				ntext = _resource->getText(_monitorTextFilename);