Basic C++ Animation Class Not Working!

All right.. im trying to make a generic animation class for a small game im working on for PSP (homebrew, whee!), but im still pretty rusty when it comes to C++. To me it seems like this class SHOULD work fine, but for some reason its not!


class Animation {
    private:
  int frame;
  float beginValue;
  float targetValue;
  int length;
  int animType;
    public:
  float currentValue;
  bool done;
  bool paused;
  Animation(float startNum, float endNum, int totalSteps, int type) {
      Reset(startNum,endNum,totalSteps,type);
  }
  void Reset(float startNum, float endNum, int totalSteps, int type) { // Make object reusable
      frame = 0;
      done = false;
      paused = true;
      currentValue = startNum;
      beginValue = startNum;
      targetValue = endNum;
      length = totalSteps;
      animType = type;
  }
  void Start() {
      paused = false;
      done = false;
  }
  void Stop() {
      frame = 0;
      done = true;
      currentValue = 0;
      beginValue = 0;
      targetValue = 0;
      length = 0;
  }
  void Pause() {
      paused = true;
  }
  void Unpause() {
      paused = false;
  }
  float Step() {
      if (paused || done) return currentValue;
      frame++;
      if (frame>=length) {
    done = true;
    currentValue = targetValue;
    return 0;
      }
      float delta = targetValue-beginValue;
      switch (animType) {
    case ANIM_LINEAR:
        // TODO: Other animations
        break;
    case ANIM_EASEIN:
        float n = frame/length;
        currentValue = delta*n*n*n+beginValue;
        return currentValue;
      }
      return currentValue;
  }
};

Then i do:


Animation *animator = new Animation(0,255,50,ANIM_EASEIN); // Create new animator for alpha
animator->Start();

...

//Then, every frame,
animator->Step();

// Then when drawing my sprite, i use animator->currentValue for the alpha
What should happen is i should get a value that increases up to 255 on the 50th frame, but what is happening is I just get '255' constantly! The code looks fine to me, ive been messing with it all night!

Anyone got an idea why it wont work?

>>10
But it's still for research and academia.
Now quit trolling and gb2/b/