/**
 * Exam example: a simple model of a dog
 * 
 * @author CSC 142
 * 
 */
public class Dog {
	private String name;
	private boolean isHungry;
	private String lastFood;
	private int count;

	// maximum number of times the dog plays before getting hungry
	// final means constant
	// can be made public since it can't be changed
	// static means shared by all objects (the constant doesn't belong
	// to a specific object. The constant belongs to the class).
	public static final int MAX_TIMES = 5;

	/**
	 * Creates a dog given its name. Initially the dog is hungry.
	 * 
	 * @param name
	 *            the name of the dog.
	 */
	public Dog(String name) {
		this.name = name;
		this.isHungry = true;
	}

	/**
	 * Feeds the dog
	 * 
	 * @param food
	 *            the food given to the dog
	 * @return true if the dog eats, and false if not
	 */
	public boolean eat(String food) {
		if (isHungry) {
			if (!food.equals(lastFood)) { // not (food != lastFood) {
				System.out.println("Yummy");
				isHungry = false;
				lastFood = food;
				count = 0;
				return true;
			} else {
				System.out.println("Not the same thing again!");
				return false;
			}
		} else {
			System.out.println("Thank you. I am not hungry.");
			return false;
		}
	}

	/**
	 * Makes the dog play fetch. The dog plays fetch only if it is not hungry.
	 */
	public void fetch() {
		if (count == MAX_TIMES) {
			isHungry = true;
		}
		if (!isHungry) {
			System.out.println("I love to play fetch.");
			count++;
		} else {
			System.out.println("I am too hungry to play.");
		}
	}

	/**
	 * Makes the dog roll over. The dog rolls over only if it is not hungry.
	 */
	public void rollOver() {
		if (count == MAX_TIMES) {
			isHungry = true;
		}
		if (!isHungry) {
			System.out.println("I love to roll over.");
			count++;
		} else {
			System.out.println("I am too hungry to play.");
		}
	}
}