TSAGE: Added support for reverse palette fading

engines/tsage/core.cpp

@@ -1161,6 +1161,20 @@ void PaletteFader::remove() {
 		action->signal();
 }
 
+void PaletteFader::setPalette(ScenePalette *palette, int step) {
+	if (step < 0) {
+		// Reverse step means moving from dest palette to source, so swap the two palettes
+		byte tempPal[256 * 3];
+		Common::copy(&palette->_palette[0], &palette->_palette[256 * 3], &tempPal[0]);
+		Common::copy(&this->_palette[0], &this->_palette[256 * 3], &palette->_palette[0]);
+		Common::copy(&tempPal[0], &tempPal[256 * 3], &this->_palette[0]);
+
+		step = -step;
+	}
+
+	PaletteModifierCached::setPalette(palette, step);
+}
+
 /*--------------------------------------------------------------------------*/
 
 ScenePalette::ScenePalette() {
@@ -1314,7 +1328,7 @@ PaletteRotation *ScenePalette::addRotation(int start, int end, int rotationMode,
 	return obj;
 }
 
-PaletteFader *ScenePalette::addFader(const byte *arrBufferRGB, int palSize, int percent, Action *action) {
+PaletteFader *ScenePalette::addFader(const byte *arrBufferRGB, int palSize, int step, Action *action) {
 	PaletteFader *fader = new PaletteFader();
 	fader->_action = action;
 	for (int i = 0; i < 256 * 3; i += 3) {
@@ -1326,7 +1340,7 @@ PaletteFader *ScenePalette::addFader(const byte *arrBufferRGB, int palSize, int
 			arrBufferRGB += 3;
 	}
 
-	fader->setPalette(this, percent);
+	fader->setPalette(this, step);
 	_globals->_scenePalette._listeners.push_back(fader);
 	return fader;
 }
@@ -2274,6 +2288,22 @@ void SceneObject::setup(int visage, int stripFrameNum, int frameNum, int posX, i
 
 /*--------------------------------------------------------------------------*/
 
+void SceneObjectExt2::postInit(SceneObjectList *OwnerList) {
+	_v8A = -1;
+	_v8C = -1;
+	_v8E = -1;
+	SceneObject::postInit();
+}
+
+void SceneObjectExt2::synchronize(Serializer &s) {
+	SceneObject::synchronize(s);
+	s.syncAsSint16LE(_v8A);
+	s.syncAsSint16LE(_v8C);
+	s.syncAsSint16LE(_v8E);
+}
+
+/*--------------------------------------------------------------------------*/
+
 void SceneObjectList::draw() {
 	Common::Array<SceneObject *> objList;
 	int paneNum = 0;

engines/tsage/core.h

@@ -287,7 +287,7 @@ class PaletteModifierCached: public PaletteModifier {
 
 	PaletteModifierCached();
 
-	void setPalette(ScenePalette *palette, int step);
+	virtual void setPalette(ScenePalette *palette, int step);
 	virtual Common::String getClassName() { return "PaletteModifierCached"; }
 	virtual void synchronize(Serializer &s);
 };
@@ -323,6 +323,7 @@ class PaletteFader: public PaletteModifierCached {
 	virtual void synchronize(Serializer &s);
 	virtual void signal();
 	virtual void remove();
+	virtual void setPalette(ScenePalette *palette, int step);
 };
 
 /*--------------------------------------------------------------------------*/
@@ -356,7 +357,7 @@ class ScenePalette : public SavedObject {
 	void clearListeners();
 	void fade(const byte *adjustData, bool fullAdjust, int percent);
 	PaletteRotation *addRotation(int start, int end, int rotationMode, int duration = 0, Action *action = NULL);
-	PaletteFader *addFader(const byte *arrBufferRGB, int palSize, int percent, Action *action);
+	PaletteFader *addFader(const byte *arrBufferRGB, int palSize, int step, Action *action);
 
 	static void changeBackground(const Rect &bounds, FadeMode fadeMode);
 
@@ -569,6 +570,16 @@ class SceneObjectExt : public SceneObject {
 	virtual Common::String getClassName() { return "SceneObjectExt"; }
 };
 
+class SceneObjectExt2: public SceneObject {
+public:
+	int _v88, _v8A, _v8C, _v8E;
+
+	virtual Common::String getClassName() { return "BF100Object"; }
+	virtual void synchronize(Serializer &s);
+	virtual void postInit(SceneObjectList *OwnerList = NULL);
+};
+
+
 class SceneText : public SceneObject {
 public:
 	int _fontNumber;