// Animated Sprite (Shifty + Teddy) 
// by James Patterson <http://www.presstube.com> and REAS <http://reas.com> 

AniSprite animation1, animation2; 
float xpos, ypos; 
float drag = 30.0; 
 
void setup() 
{ 
  size(200,200); 
  background(255, 204, 0); 
  framerate(24); 
  animation1 = new AniSprite("PT_Shifty_00", 38); 
  animation2 = new AniSprite("PT_Teddy_00", 60); 
} 
 
void draw() 
{ 
  float difx = mouseX - xpos; 
  if(abs(difx) > 1.0) { 
    xpos = xpos + difx/drag; 
    xpos = constrain(xpos, 0, width); 
  } 
 
  // Display the sprite at the position xpos, ypos 
  if(mousePressed) { 
    background(153, 153, 0); 
    animation1.display(xpos-animation1.getWidth()/2, ypos); 
  } else { 
    background(255, 204, 0); 
    animation2.display(xpos-animation1.getWidth()/2, ypos); 
  } 
} 
 
 
// Class for animating GIFs 
 
class AniSprite 
{ 
  PImage[] ani; 
  int frame; 
  int numFrames; 
  
  AniSprite(String imageName, int frameCount) { 
    numFrames = frameCount; 
    ani = new PImage[numFrames]; 
    loadImages(imageName); 
  } 
 
  void loadImages(String name) { 
    for(int i=0; i<numFrames; i++) { 
      String imageName = name + ((i < 10) ? "0" : "") + i + ".gif"; 
      ani[i] = loadImage(imageName); 
    } 
  } 
 
  void display(float xpos, float ypos) 
  { 
    frame = (frame+1)%numFrames; 
    image(ani[frame], xpos, ypos); 
  } 
  
  int getWidth() { 
    return ani[0].width; 
  } 
 
}