source: last-defense/main/Location.java

package main;

public class Location {
    private double x;
    private double y;
    
    public Location(final double x, final double y) {
        this.x = x;
        this.y = y;
    }
    
    public Location(final Location copy) {
        this.x = copy.x;
        this.y = copy.y;
    }
    
    public int getX() {
        return (int)Math.round(this.x);
    }
    
    public int getY() {
        return (int)Math.round(this.y);
    }
    
    public void setLocation(final double x, final double y) {
        this.x = x;
        this.y = y;
    }
    
    public void setLocation(final Location loc) {
        this.x = loc.x;
        this.y = loc.y;
    }
    
    public boolean moveToTarget(final double x, final double y, final double distance) {
        final double totalDist = Math.sqrt(Math.pow(x - this.x, 2.0) + Math.pow(y - this.y, 2.0));
        double ratio = 1.0;
        boolean arrived = false;
        if (distance < totalDist) {
            ratio = distance / totalDist;
        } else {
            arrived = true;
        }
        this.x += (x - this.x) * ratio;
        this.y += (y - this.y) * ratio;
        return arrived;
    }
    
    public double distance(final Location loc) {
        return Math.sqrt(Math.pow(this.x - loc.x, 2.0) + Math.pow(this.y - loc.y, 2.0));
    }
}