src/animation.cpp

   1 #include "animation.h"
   2
   3 Animation::Animation()
   4         : img(NULL),
   5           animated(false),
   6           frameLen(0),
   7           animLen(0),
   8           frameShowing(0)
   9 {
  10 }
  11
  12 void Animation::addFrame(ImageRef frame)
  13 {
  14         frames.push_back(frame);
  15         animLen = frameLen * (int)frames.size();
  16         if (frames.size() == 1)
  17                 img = frame.get();
  18         if (frames.size() > 1)
  19                 animated = true;
  20 }
  21
  22 void Animation::setFrameLen(int milliseconds)
  23 {
  24         frameLen = milliseconds;
  25         animLen = frameLen * (int)frames.size();
  26 }
  27
  28 bool Animation::needsUpdate(int milliseconds) const
  29 {
  30         if (animated) {
  31                 int frame = (milliseconds % animLen) / frameLen;
  32                 if (frame != frameShowing)
  33                         return true;
  34         }
  35         return false;
  36 }
  37
  38 void Animation::updateFrame(int milliseconds)
  39 {
  40         if (animated) {
  41                 frameShowing = (milliseconds % animLen) / frameLen;
  42                 img = frames[frameShowing].get();
  43         }
  44 }
  45
  46 Gosu::Image* Animation::image() const
  47 {
  48         return img;
  49 }
  50