#ifndef FRAME_SHEET_H
#define FRAME_SHEET_H
#include <SDL2/SDL.h>
#include <SDL2/SDL_opengl.h>
/*
  FrameSheet(s) are what manage the loading and rendering of Animations. loadFrameSheet handles the loading in of all images within the given directory into SDL_Surface(s).
  when openFrameSheet is called, all surfaces are loaded into textures and the state is set to 1.
  when closeFrameSheet is called, all textures are unloaded and the state is set to 0
  when renderFrame is called, and state is 1, the given frame's texture is rendered to the screen
*/
struct FrameSheet {
  int count; // count of surfaces
  int state; // 0 = closed, 1 = open
  SDL_Surface **surfaces; // surface for each image
  GLuint *textures; // texture mapped to each surface
};
struct FrameSheet *newFrameSheet();
int freeFrameSheet(struct FrameSheet *sheet);
struct FrameSheet *loadFrameSheet(const char *name, const char *framedir);
int openFrameSheet(struct FrameSheet *sheet);
int closeFrameSheet(struct FrameSheet *sheet);
int renderFrame(struct FrameSheet *sheet, int frame, int x, int y);
#endif