package NET.worlds.scape;

import java.io.IOException;

public class Point2 implements Persister {
   public float x;
   public float y;
   private static Object classCookie = new Object();

   public Point2() {
   }

   public Point2(float _x, float _y) {
      this.set(_x, _y);
   }

   public Point2(Point2 p) {
      this.x = p.x;
      this.y = p.y;
   }

   public Point2 copy(Point2 b) {
      this.x = b.x;
      this.y = b.y;
      return this;
   }

   public void set(float _x, float _y) {
      this.x = _x;
      this.y = _y;
   }

   public float length() {
      return (float)Math.sqrt(this.x * this.x + this.y * this.y);
   }

   public Point2 normalize() {
      float len = this.length();
      if (len > 0.0F) {
         this.dividedBy(len);
      }

      return this;
   }

   public Point2 negate() {
      this.x = -this.x;
      this.y = -this.y;
      return this;
   }

   public Point2 plus(Point2 p) {
      this.x = this.x + p.x;
      this.y = this.y + p.y;
      return this;
   }

   public Point2 plus(float v) {
      this.x += v;
      this.y += v;
      return this;
   }

   public Point2 minus(float v) {
      return this.plus(-v);
   }

   public Point2 minus(Point2 p) {
      this.x = this.x - p.x;
      this.y = this.y - p.y;
      return this;
   }

   public Point2 times(float v) {
      this.x *= v;
      this.y *= v;
      return this;
   }

   public Point2 times(Point2 p) {
      this.x = this.x * p.x;
      this.y = this.y * p.y;
      return this;
   }

   public Point2 dividedBy(float v) {
      this.x /= v;
      this.y /= v;
      return this;
   }

   public Point2 dividedBy(Point2 p) {
      this.x = this.x / p.x;
      this.y = this.y / p.y;
      return this;
   }

   public float dot(Point2 p) {
      return p.x * this.x + p.y * this.y;
   }

   @Override
   public String toString() {
      return this.x + "," + this.y;
   }

   @Override
   public void saveState(Saver s) throws IOException {
      s.saveVersion(0, classCookie);
      s.saveFloat(this.x);
      s.saveFloat(this.y);
   }

   @Override
   public void restoreState(Restorer r) throws IOException, TooNewException {
      switch (r.restoreVersion(classCookie)) {
         case 0:
            this.x = r.restoreFloat();
            this.y = r.restoreFloat();
            return;
         default:
            throw new TooNewException();
      }
   }

   @Override
   public void postRestore(int version) {
   }
}