class LivePoint{
  Vector2D loc, vel, acc;
  Vector2D originalLoc, prevLoc;
  float max_vel = 1.5f;
  color myColor;

  LivePoint(int _x, int _y, color _c){
    loc = new Vector2D(_x,_y);
    originalLoc = loc.copy();
    prevLoc = loc.copy();
    vel = new Vector2D(0.0,0.0);
    acc = new Vector2D(0.0,0.0);
    myColor = _c;
  }

  void runIn(){
    updateIn();
    if(prevLoc.x()!=loc.x() || prevLoc.y()!=loc.y()){
      renderIn();
    }
    prevLoc=loc.copy();
  }

  void runOut(){
    updateOut();
   // if(loc.distance(loc,originalLoc)>1){
    //if(((int)loc.x()!= (int)originalLoc.x() || (int)loc.x()!= (int)originalLoc.x()+1 
    //|| (int)loc.x()!= (int)originalLoc.x()-1) && ((int)loc.y()!=(int)originalLoc.y() 
    //|| (int)loc.y()!=(int)originalLoc.y()+1 || (int)loc.y()!=(int)originalLoc.y()-1)){
    //int o=(int)loc.x()+1;
    //println((int)loc.x()+"_____"+o);
      renderOut();
    //}
    prevLoc=loc.copy();   
  }

  void updateIn(){
    //float dis;
    //dis = loc.distance(loc, new Vector2D(mouseX,mouseY));
    Vector2D dir;
    dir= calcDir(loc,new Vector2D(mouseX,mouseY));
    //dir = dir.div(dir,10.0);
    acc.sub(dir);
    //println(dir.x()+"___"+dir.y());
    vel.add(acc);
    vel.limit(max_vel);
    loc.add(vel);
    acc.setXY(0.0f,0.0f);
    vel.setXY(0.0f,0.0f);
  }

  void updateOut(){
    Vector2D dir;
    dir= calcDir(loc,originalLoc);
    //dir = dir.div(dir,100.0);
    acc.sub(dir);
    //println("s");
    vel.add(acc);
    vel.limit(max_vel);
    loc.add(vel);
    acc.setXY(0.0f,0.0f);
    vel.setXY(0.0f,0.0f);
    //println(loc.x()+"---"+originalLoc.x());
  }

  void renderIn(){
    fill(red(myColor),green(myColor),blue(myColor),25);
    noStroke();
    //println(this+"  "+red(myColor));
    ellipse(loc.x(),loc.y(),2,2);
  }

  void renderOut(){
    fill(red(myColor),green(myColor),blue(myColor),15);
    noStroke();
    //println(this+"  "+red(myColor));
    ellipse(loc.x(),loc.y(),2,2);
  }

  Vector2D calcDir(Vector2D _l, Vector2D _mouse){
    Vector2D dir = Vector2D.sub(_l,_mouse);      //calculate direction of force
    float d = dir.magnitude();                        //distance between objects
    dir.normalize();                                  //normalize vector (distance doesn't matter here, we just want this vector for direction)
    return dir;
  }

  void setColor(color _c){
    myColor = _c;
  }
}