gann-cdf / graphics

import org.gannacademy.cdf.graphics.Drawable;

import java.util.List;

import java.util.Vector;

public class Sprite {

    private List<Drawable> components;

    public Sprite() {

        components = new Vector<>();

    }

    public void addComponent(Drawable component) {

        if (!components.contains(component)) {

            components.add(component);

        }

    }

    public double getTop() {

        double top = Double.MAX_VALUE;

        for(Drawable component:components) {

            top = Math.min(top, component.getY());

        }

        if (top == Double.MAX_VALUE) {

            return Double.NaN;

        }

        return top;

    }

}