SHERLOCK: Add some code for the interactive demo (still crashing)

engines/sherlock/detection.cpp

@@ -122,6 +122,13 @@ bool Sherlock::SherlockEngine::hasFeature(EngineFeature f) const {
 		(f == kSupportsSavingDuringRuntime);
 }
 
+/**
+ * Returns whether the version is a demo
+ */
+bool Sherlock::SherlockEngine::getIsDemo() const {
+	return _gameDescription->desc.flags & ADGF_DEMO;
+}
+
 /**
  * Return a list of savegames
  */

engines/sherlock/detection_tables.h

@@ -84,6 +84,7 @@ static const SherlockGameDescription gameDescriptions[] = {
 
 	{
 		// Case of the Rose Tattoo - English CD
+		// Provided by dreammaster
 		{
 			"rosetattoo",
 			"CD",

engines/sherlock/map.cpp

@@ -69,6 +69,7 @@ Map::Map(SherlockEngine *vm): _vm(vm), _topLine(SHERLOCK_SCREEN_WIDTH, 12) {
 	for (int idx = 0; idx < MAX_HOLMES_SEQUENCE; ++idx)
 		Common::fill(&_sequences[idx][0], &_sequences[idx][MAX_FRAME], 0);
 
+	if (!_vm->getIsDemo())
 		loadData();
 }
 

engines/sherlock/scalpel/scalpel.cpp

@@ -215,9 +215,11 @@ void ScalpelEngine::initialize() {
 	_flags[3] = true;		// Turn on Alley
 	_flags[39] = true;		// Turn on Baker Street
 
+	if (!getIsDemo()) {
 	// Load the map co-ordinates for each scene and sequence data
 	_map->loadPoints(NUM_PLACES, &MAP_X[0], &MAP_Y[0], &MAP_TRANSLATE[0]);
 	_map->loadSequences(3, &MAP_SEQUENCES[0][0]);
+	}
 
 	// Load the inventory
 	loadInventory();
@@ -226,6 +228,9 @@ void ScalpelEngine::initialize() {
 	_talk->setSequences(&TALK_SEQUENCES[0][0], &STILL_SEQUENCES[0][0], MAX_PEOPLE);
 
 	// Starting scene
+	if (getIsDemo())
+		_scene->_goToScene = 3;
+	else
 		_scene->_goToScene = 4;
 }
 
@@ -233,6 +238,9 @@ void ScalpelEngine::initialize() {
  * Show the opening sequence
  */
 void ScalpelEngine::showOpening() {
+	if (getIsDemo())
+		return;
+
 	if (!showCityCutscene())
 		return;
 	if (!showAlleyCutscene())

engines/sherlock/scene.cpp

@@ -457,10 +457,12 @@ bool Scene::loadScene(const Common::String &filename) {
 	_walkedInScene = false;
 	saves._justLoaded = false;
 
+	if (!_vm->getIsDemo()) {
 		// Reset the previous map location and position on overhead map
 		map._oldCharPoint = _currentScene;
 		map._overPos.x = map[_currentScene].x * 100 - 600;
 		map._overPos.y = map[_currentScene].y * 100 + 900;
+	}
 
 	events.clearEvents();
 	return flag;