// A class to describe a thing in our world
// Has variables location, velocity and acceleration
class Moo {
  Vector3D loc;
  Vector3D vel;
  Vector3D acc;
  private float maxvel;


  // The constructor (called when the object is first created)
  Moo(Vector3D a, Vector3D v, Vector3D l) {
    acc = a;
    vel = v;
    loc = l;
    maxvel = 7;
  }

  Vector3D getAcc() {
    return acc;
  }


  Vector3D getVel() {
    return vel;
  }

  Vector3D getLoc() {
    return loc;
  }

  void setLoc(Vector3D v) {
    loc = v;
  }

  void setVel(Vector3D v) {
    vel = v;
  }

  void setAcc(Vector3D v) {
    acc = v;
  }

  // main function to operate object
  void go(float c) {
    update();
    borders();
    render(c);
  }

  // function to update location
  void update() {
    vel.add(acc);
    loc.add(vel);
    // limit speed to max
    vel.limit(maxvel);
    /* if (vel.magnitude() > maxvel) {
     vel.normalize();
     vel.mult(maxvel);
     }*/
  }

 


  void borders() {
    if((loc.y() > height) || (loc.y() < 0)) {
      vel.setY(-vel.y());
    }
    if((loc.x() > width) || (loc.x() < 0)) {
      vel.setX(-vel.x());
    }
  }

  // function to display
  void render(float c) {
    noStroke();
    fill(0,200,c);
    rect(loc.x(), loc.y(), 5,5);
    
  
  }
  
  

}