/*
 * Pixel Dungeon
 * Copyright (C) 2012-2015 Oleg Dolya
 *
 * Shattered Pixel Dungeon
 * Copyright (C) 2014-2026 Evan Debenham
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */

package com.watabou.utils;

public class Point {

	public int x;
	public int y;
	
	public Point() {
	}
	
	public Point( int x, int y ) {
		this.x = x;
		this.y = y;
	}
	
	public Point( Point p ) {
		this.x = p.x;
		this.y = p.y;
	}
	
	public Point set( int x, int y ) {
		this.x = x;
		this.y = y;
		return this;
	}
	
	public Point set( Point p ) {
		x = p.x;
		y = p.y;
		return this;
	}
	
	public Point clone() {
		return new Point( this );
	}
	
	public Point scale( float f ) {
		this.x *= f;
		this.y *= f;
		return this;
	}
	
	public Point offset( int dx, int dy ) {
		x += dx;
		y += dy;
		return this;
	}
	
	public Point offset( Point d ) {
		x += d.x;
		y += d.y;
		return this;
	}

	public boolean isZero(){
		return x == 0 && y == 0;
	}

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

	public static float distance( Point a, Point b ) {
		float dx = a.x - b.x;
		float dy = a.y - b.y;
		return (float)Math.sqrt( dx * dx + dy * dy );
	}
	
	@Override
	public boolean equals( Object obj ) {
		if (obj instanceof Point) {
			Point p = (Point)obj;
			return p.x == x && p.y == y;
		} else {
			return false;
		}
	}
}
