i would like for this program to be comprehensible

dat.h

@@ -1,34 +0,0 @@
-typedef struct Samply Samply;
-typedef struct Image Image;
-typedef struct State State;
-
-struct Samply {
-	Image *tx; /* this is a pointer to one of the images below */
-
-	Image *idle;
-	Image *walka;
-	Image *walkb;
-	Image *error;
-};
-
-struct Image {
-	char *name; /* used for debugging purposes */
-	int w;
-	int h;
-	int bpp;
-	unsigned char *data;
-	SDL_Surface *sur;
-	SDL_Texture *tex;
-};
-
-struct State {
-	SDL_Window *win;
-	SDL_Renderer *ren;
-	SDL_DisplayID dpy;
-	SDL_Rect bounds;
-
-	Uint64 lastframe;
-	Uint64 frame;
-
-	Samply *sam;
-};