AnimatedSprite.pde

  public class AnimatedSprite extends Sprite{
    PImage[] currentImages;
    PImage[] standNeutral;
    PImage[] moveLeft;
    PImage[] moveRight;
    int direction;
    int index;
    int frame;

  
  public AnimatedSprite(PImage img, float scale){
    super(img,scale);
    direction = NEUTRAL_FACING;
    index = 0;
    frame = 0;
  }
    
  public void updateAnimation(){
    frame++;
    if(frame % 5 == 0 ){
      selectDirection();
      selectCurrentImages();
      advanceToNextImage();
      
    }
  }
  
  public void selectDirection(){
    if(change_x > 0){
      direction = RIGHT_FACING;
    }
     else if(change_x < 0){
      direction = LEFT_FACING;
    }
    else{
      direction = NEUTRAL_FACING;
  }}
  
 public void selectCurrentImages(){
  if(direction ==  RIGHT_FACING) 
    currentImages = moveRight;
  
  else if(direction == LEFT_FACING)
    currentImages = moveLeft;
  
  else
    currentImages = standNeutral;
  
 }

  public void advanceToNextImage(){
    index++;
    if(index >= currentImages.length) index=0;
    image = currentImages[index];
  } 

}