src/animation.cpp

   1 /******************************
   2 ** Tsunagari Tile Engine     **
   3 ** animation.cpp             **
   4 ** Copyright 2011 OmegaSDG   **
   5 ******************************/
   6
   7 #include "animation.h"
   8
   9 Animation::Animation()
  10         : img(NULL),
  11           animated(false),
  12           frameLen(0),
  13           animLen(0),
  14           frameShowing(0)
  15 {
  16 }
  17
  18 Animation::Animation(ImageRef frame)
  19 {
  20         Animation();
  21         addFrame(frame);
  22 }
  23
  24 void Animation::addFrame(ImageRef frame)
  25 {
  26         frames.push_back(frame);
  27         animLen = frameLen * (int)frames.size();
  28         if (frames.size() == 1)
  29                 img = frame.get();
  30         if (frames.size() > 1)
  31                 animated = true;
  32 }
  33
  34 void Animation::setFrameLen(int milliseconds)
  35 {
  36         frameLen = milliseconds;
  37         animLen = frameLen * (int)frames.size();
  38 }
  39
  40 bool Animation::needsRedraw(int milliseconds) const
  41 {
  42         if (animated) {
  43                 int frame = (milliseconds % animLen) / frameLen;
  44                 if (frame != frameShowing)
  45                         return true;
  46         }
  47         return false;
  48 }
  49
  50 void Animation::updateFrame(int milliseconds)
  51 {
  52         if (animated) {
  53                 frameShowing = (milliseconds % animLen) / frameLen;
  54                 img = frames[frameShowing].get();
  55         }
  56 }
  57
  58 Gosu::Image* Animation::frame() const
  59 {
  60         return img;
  61 }
  62