gistfile1.cpp

sprite_map[someid] = AnimatedSprite(Asset::load<Texture>("mychar.png"), glm::vec4(0, 48, 16, 16), 0.1f, 5, 16);

sprite_map[someid].update(delta); // calls Sprite::update(float);

sprite.cc

#include "sprite.h"

Sprite::Sprite() {

}

Sprite::Sprite(const TexturePtr texture, const glm::vec4 source) :
  tex(texture),
  src(source) {

}

Sprite::~Sprite() {

}

AnimatedSprite::AnimatedSprite(const TexturePtr texture, const glm::vec4 source, float fps, int num, int size) :
  Sprite(texture, source),
  frame_time(fps),
  num_frames(num),
  tile_size(size),
  current_frame(0) {

}

AnimatedSprite::~AnimatedSprite() {

}

void AnimatedSprite::update(float delta) {
  printf("hierhjwoe");
  time += delta;

  if (time > frame_time) {
    current_frame++;
    time = 0;
    if (current_frame > num_frames) {
      current_frame = 0;
      src.x -= (num_frames) * tile_size;
    } else {
      src.x += tile_size;
    }
  }
}

sprite.h

#ifndef CLOBAT_SPRITE_H_
#define CLOBAT_SPRITE_H_

#include "glutil.h"
#include "texture.h"

class Sprite {
 public:
  Sprite();
  Sprite(const TexturePtr texture,
         const glm::vec4 source);
  ~Sprite();
  virtual void update(float delta) {}
  TexturePtr tex;
  glm::vec4 src;
  bool x_flip;
};

class AnimatedSprite : public Sprite {
 public:
  AnimatedSprite(const TexturePtr texture, const glm::vec4 source, float fps, int num, int size);
  ~AnimatedSprite();
  void update(float delta);
 private:
  const float frame_time;
  const int num_frames;
  int tile_size;
  int current_frame;
  float time;
};

#endif /* defined CLOBAT_SPRITE_H_ */