provide definitions for Mng and Movie images for tolua, even when those aren't supported

.gitignore

@@ -28,3 +28,5 @@ obj-*
 ./tolua.cpp.rule
 build
 .vscode
+.clangd
+compile_commands.json

src/include/movie.h

@@ -89,7 +89,7 @@ public:
     Movie() : rect(NULL), yuv_overlay(NULL), surface(NULL), need_data(true), start_time(0),
               is_dirty(true), Width(0), Height(0), data(NULL), f(NULL) {};
     ~Movie();
-    int Load(const std::string &filename, int w, int h);
+    bool Load(const std::string &filename, int w, int h);
     bool IsPlaying() const { return is_dirty; }
 
     //guichan
@@ -124,6 +124,23 @@ extern int OggGetNextPage(ogg_page *page, ogg_sync_state *sync, CFile *f);
 
 extern int VorbisProcessData(OggData *data, char *buffer);
 
+#else
+
+/// empty class for lua scripts
+class Movie : public gcn::Image
+{
+public:
+    Movie() : {};
+    ~Movie();
+    bool Load(const std::string &filename, int w, int h) { return false; }
+    bool IsPlaying() const { return false; }
+    //guichan
+    virtual void *_getData() const { return NULL; };
+    virtual int getWidth() const { return 0; }
+    virtual int getHeight() const { return 0; }
+    virtual bool isDirty() const { return false; }
+};
+
 #endif // USE_VORBIS
 
 /// Play a movie file

src/include/video.h

@@ -147,7 +147,7 @@ class Mng : public gcn::Image
 public:
 	Mng();
 	~Mng();
-	int Load(const std::string &name);
+	bool Load(const std::string &name);
 	void Reset();
 	void Draw(int x, int y);
 
@@ -166,6 +166,23 @@ public:
 	unsigned long ticks;
 	int iteration;
 };
+#else
+/// empty class for lua scripts
+class Mng : public gcn::Image
+{
+public:
+	Mng();
+	~Mng();
+	bool Load(const std::string &name) { return false; }
+	void Reset() {};
+	void Draw(int x, int y) {};
+
+	//guichan
+	virtual void *_getData() const { return NULL; };
+	virtual int getWidth() const { return 0; }
+	virtual int getHeight() const { return 0; }
+	virtual bool isDirty() const { return false; }
+};
 #endif
 
 /**

src/tolua/ui.pkg

@@ -330,12 +330,8 @@ class ScrollArea : public BasicContainer
 class ImageWidget : public Widget
 {
 	ImageWidget(CGraphic *image);
-#ifdef USE_MNG
         ImageWidget(Mng *image);
-#endif
-#if defined(USE_THEORA) && defined(USE_VORBIS)
         ImageWidget(Movie *image);
-#endif
 };
 
 class Button : public Widget

src/tolua/video.pkg

@@ -51,23 +51,19 @@ void SetColorCycleAll(bool value);
 void ClearAllColorCyclingRange();
 void AddColorCyclingRange(unsigned int startColorIndex, unsigned int endColorIndex);
 
-#ifdef USE_MNG
 class Mng
 {
 public:
         Mng();
-        int Load(const std::string name);
+        bool Load(const std::string name);
         void Draw(int x, int y);
         void Reset();
 }
-#endif
 
-#if defined(USE_THEORA) && defined(USE_VORBIS)
 class Movie
 {
 public:
         Movie();
-        int Load(const std::string name, int w, int h);
+        bool Load(const std::string name, int w, int h);
         bool IsPlaying();
 }
-#endif

src/video/mng.cpp

@@ -223,12 +223,12 @@ void Mng::Draw(int x, int y)
 **
 **  @param name  Name of the MNG file
 */
-int Mng::Load(const std::string &name)
+bool Mng::Load(const std::string &name)
 {
 	this->name = LibraryFileName(name.c_str());
 	handle = mng_initialize(this, my_alloc, my_free, MNG_NULL);
 	if (handle == MNG_NULL) {
-		return -1;
+		return false;
 	}
 	mng_setcb_openstream(handle, my_openstream);
 	mng_setcb_closestream(handle, my_closestream);
@@ -247,9 +247,9 @@ int Mng::Load(const std::string &name)
 	}
 
 	if (!surface || iteration == 0x7fffffff) {
-		return -1;
+		return false;
 	}
-	return 0;
+	return true;
 }
 
 /**

src/video/movie.cpp

@@ -459,7 +459,7 @@ static void RenderToSurface(SDL_Surface *surface, SDL_Texture *yuv_overlay, SDL_
 	free(yuv);
 }
 
-int Movie::Load(const std::string &name, int w, int h)
+bool Movie::Load(const std::string &name, int w, int h)
 {
 	Width = w;
 	Height = h;
@@ -468,7 +468,7 @@ int Movie::Load(const std::string &name, int w, int h)
 	f = new CFile();
 	if (f->open(filename.c_str(), CL_OPEN_READ) == -1) {
 		fprintf(stderr, "Can't open file '%s'\n", name.c_str());
-		return -1;
+		return false;
 	}
 
 	rect = (SDL_Rect*)calloc(sizeof(SDL_Rect), 1);
@@ -486,10 +486,10 @@ int Movie::Load(const std::string &name, int w, int h)
 	if (surface == NULL) {
 		fprintf(stderr, "SDL_CreateRGBSurface: %s\n", SDL_GetError());
 		f->close();
-		return -1;
+		return false;
 	}
 
-	return 0;
+	return true;
 }
 
 void *Movie::_getData() const