CHEWY: Use virtual destructors. Some cleanup

engines/chewy/events.h

@@ -34,7 +34,7 @@ class Console;
 class Events {
 public:
 	Events(ChewyEngine *vm, Graphics *graphics, Console *console);
-	~Events() {}
+	virtual ~Events() {}
 
 	void processEvents();
 

engines/chewy/graphics.h

@@ -32,7 +32,7 @@ class SpriteResource;
 class Graphics {
 public:
 	Graphics(ChewyEngine *vm);
-	~Graphics();
+	virtual ~Graphics();
 
 	void drawImage(Common::String filename, int imageNum);
 	void playVideo(uint num);

engines/chewy/resource.h

@@ -86,19 +86,6 @@ struct TBFChunk {
 	byte *data;
 };
 
-// TAF (sprite) chunk header
-/*struct TAFHeader {
-	// TAF chunk header
-	// ID (TAF, followed by a zero)
-	uint16 screenMode;
-	uint16 spriteCount;
-	uint32 size;	// total size (width * height) of all sprites
-	byte palette[3 * 256];
-	uint32 nextSpriteOffset;
-	uint16 correctionTable;
-	// 1 byte padding
-};*/
-
 // TAF (sprite) image data chunk header - 15 bytes
 struct TAFChunk {
 	uint16 compressionFlag;
@@ -160,39 +147,39 @@ class Resource {
 class SpriteResource : public Resource {
 public:
 	SpriteResource(Common::String filename) : Resource(filename) {}
-	~SpriteResource() {}
+	virtual ~SpriteResource() {}
 
 	TAFChunk *getSprite(uint num);
 };
 
 class BackgroundResource : public Resource {
 public:
 	BackgroundResource(Common::String filename) : Resource(filename) {}
-	~BackgroundResource() {}
+	virtual ~BackgroundResource() {}
 
 	TBFChunk *getImage(uint num);
 };
 
 class SoundResource : public Resource {
 public:
 	SoundResource(Common::String filename) : Resource(filename) {}
-	~SoundResource() {}
+	virtual ~SoundResource() {}
 
 	SoundChunk *getSound(uint num);
 };
 
 class TextResource : public Resource {
 public:
 	TextResource(Common::String filename) : Resource(filename) {}
-	~TextResource() {}
+	virtual ~TextResource() {}
 
 	Common::String getText(uint num);
 };
 
 class VideoResource : public Resource {
 public:
 	VideoResource(Common::String filename) : Resource(filename) {}
-	~VideoResource() {}
+	virtual ~VideoResource() {}
 
 	VideoChunk *getVideoHeader(uint num);
 	Common::SeekableReadStream *getVideoStream(uint num);

engines/chewy/sound.h

@@ -33,7 +33,7 @@ class SoundResource;
 class Sound {
 public:
 	Sound(Audio::Mixer *mixer);
-	~Sound();
+	virtual ~Sound();
 
 	void playSound(int num, bool loop = false);
 	void playMusic(int num, bool loop = false);