package class2_Lab_StaticVariablesAndMethods;

import java.util.ArrayList;

public class Animal {
    private String name;
    private static ArrayList<String> names = new ArrayList<String>();

    /**
     * Create a new animal.
     * @param name display name of the animal
     */
    public Animal(String name) {
        names.add(name);

        if(name.length() >0) {
            this.name = name;
        }
        else {
            this.name = "UNDEFINED";
        }
    }

    /**
     * The distance forward from some point
     * in meters
     */
    private double location;

    /**
     * Say something
     */
    public void speak() {
        System.out.println("(Doesn't say anything)");
    }

    /**
     * Simulate animal running
     * @param dist distance to run forward (meters)
     */
    public void runForwardMeters(double dist) {
        location += dist;
    }

    public static void printAllNames() {
        for(String name: names) {
            System.out.println("Name: "+name);
        }
    }

    public boolean equals(Object o) {
        boolean result;
        if(o instanceof Animal) {
            Animal animal = (Animal) o;
            result = this.location == animal.location;
        } else {
            result = false;
        }
        return result;
    }
}