TSAGE: Fixed core engine display of background scene objects

engines/tsage/blue_force/blueforce_scenes0.h

@@ -159,7 +159,7 @@ public:
 	TicketBook _ticketBook;
 	CompartmentDoor _compartmentDoor;
 	SceneObject _dashboard;
-	AltSceneObject _car;
+	BackgroundSceneObject _car;
 	NamedHotspot _item1;
 	Ignition _ignition;
 	Item3 _item3;

engines/tsage/blue_force/blueforce_ui.cpp

@@ -38,7 +38,7 @@ void StripProxy::process(Event &event) {
 /*--------------------------------------------------------------------------*/
 
 void UIElement::synchronize(Serializer &s) {
-	AltSceneObject::synchronize(s);
+	BackgroundSceneObject::synchronize(s);
 	s.syncAsSint16LE(_field88);
 	s.syncAsSint16LE(_enabled);
 	s.syncAsSint16LE(_frameNum);

engines/tsage/blue_force/blueforce_ui.h

@@ -39,7 +39,7 @@ public:
 	virtual void process(Event &event);
 };
 
-class UIElement: public AltSceneObject {
+class UIElement: public BackgroundSceneObject {
 public:
 	int _field88;
 	bool _enabled;

engines/tsage/core.cpp

@@ -2528,17 +2528,18 @@ void SceneObject::setup(int visage, int stripFrameNum, int frameNum, int posX, i
 
 /*--------------------------------------------------------------------------*/
 
-void AltSceneObject::postInit(SceneObjectList *OwnerList) {
-	SceneObject::postInit(&_globals->_sceneManager._altSceneObjects);
+void BackgroundSceneObject::postInit(SceneObjectList *OwnerList) {
+	SceneObject::postInit(&_globals->_sceneManager._bgSceneObjects);
 }
 
-void AltSceneObject::draw() {
+void BackgroundSceneObject::draw() {
+	assert(_globals->_sceneManager._scene);
 	Rect destRect = _bounds;
 	destRect.translate(-_globals->_sceneManager._scene->_sceneBounds.left,
 		-_globals->_sceneManager._scene->_sceneBounds.top);
 	Region *priorityRegion = _globals->_sceneManager._scene->_priorities.find(_priority);
 	GfxSurface frame = getFrame();
-	_globals->_gfxManagerInstance.copyFrom(frame, destRect, priorityRegion);
+	_globals->_sceneManager._scene->_backSurface.copyFrom(frame, destRect, priorityRegion);
 }
 
 /*--------------------------------------------------------------------------*/

engines/tsage/core.h

@@ -606,9 +606,9 @@ public:
 	void setup(int visage, int stripFrameNum, int frameNum, int posX, int posY, int priority);
 };
 
-class AltSceneObject: public SceneObject {
+class BackgroundSceneObject: public SceneObject {
 public:
-	virtual Common::String getClassName() { return "AltObjectExt"; }
+	virtual Common::String getClassName() { return "BackgroundSceneObject"; }
 	virtual void postInit(SceneObjectList *OwnerList = NULL);
 	virtual void draw();
 };

engines/tsage/ringworld/ringworld_scenes10.cpp

@@ -37,7 +37,7 @@ Scene2::Scene2() : Scene() {
 /*--------------------------------------------------------------------------*/
 
 void Object9350::postInit(SceneObjectList *OwnerList) {
-	//SceneObject::postInit(&_globals->_sceneManager._altSceneObjects);
+	//SceneObject::postInit(&_globals->_sceneManager._bgSceneObjects);
 	SceneObject::postInit(OwnerList);
 }
 

engines/tsage/scenes.cpp

@@ -81,7 +81,7 @@ void SceneManager::sceneChange() {
 	}
 
 	// Clear the secondary scene object list
-	_altSceneObjects.clear();
+	_bgSceneObjects.clear();
 
 	// Clear the hotspot list
 	SynchronizedList<SceneItem *>::iterator ii = _globals->_sceneItems.begin();
@@ -234,7 +234,7 @@ void SceneManager::listenerSynchronize(Serializer &s) {
 		// in order for the savegame loading to work correctly
 		_globals->_sceneManager._scene = new Scene();
 
-	_altSceneObjects.synchronize(s);
+	_bgSceneObjects.synchronize(s);
 	s.syncAsSint32LE(_sceneNumber);
 	s.syncAsUint16LE(_globals->_sceneManager._scene->_activeScreenNumber);
 
@@ -442,16 +442,16 @@ void Scene::refreshBackground(int xAmount, int yAmount) {
 	}
 
 	if (changedFlag) {
-		drawAltObjects();
+		drawBackgroundObjects();
 	}
 }
 
-void Scene::drawAltObjects() {
+void Scene::drawBackgroundObjects() {
 	Common::Array<SceneObject *> objList;
 
 	// Initial loop to set the priority for entries in the list
-	for (SynchronizedList<SceneObject *>::iterator i = _globals->_sceneManager._altSceneObjects.begin();
-		i != _globals->_sceneManager._altSceneObjects.end(); ++i) {
+	for (SynchronizedList<SceneObject *>::iterator i = _globals->_sceneManager._bgSceneObjects.begin();
+		i != _globals->_sceneManager._bgSceneObjects.end(); ++i) {
 		SceneObject *obj = *i;
 		objList.push_back(obj);
 
@@ -463,7 +463,7 @@ void Scene::drawAltObjects() {
 	}
 
 	// Sort the list by priority
-	_globals->_sceneManager._altSceneObjects.sortList(objList);
+	_globals->_sceneManager._bgSceneObjects.sortList(objList);
 
 	// Drawing loop
 	for (uint objIndex = 0; objIndex < objList.size(); ++objIndex) {

engines/tsage/scenes.h

@@ -33,7 +33,7 @@ namespace TsAGE {
 
 class Scene : public StripCallback {
 private:
-	void drawAltObjects();
+	void drawBackgroundObjects();
 public:
 	int _field12;
 	int _screenNumber;
@@ -86,7 +86,7 @@ public:
 	Common::Point _sceneBgOffset;
 	int _sceneLoadCount;
 	Rect _scrollerRect;
-	SceneObjectList _altSceneObjects;
+	SceneObjectList _bgSceneObjects;
 	int _objectCount;
 public:
 	SceneManager();