// GuessNumberGame.java
//
// ICS 21: Lab 0
//
// Written by Alex Thornton for ICS 21 Summer 2009
// Minor revisions by Norman Jacobson for ICS 21 Fall 2009
//
// This class implements the "engine" for the "guess a number" game.
// The engine is in charge of choosing a random "target number," comparing the
// user's guesses to the target number, and responding accordingly.
//
// Notice that this class does not perform input/output.  This is by
// design.  The user interface and the "engine"  are separated into
// two classes, for a very good reason: it allows the user interface
// to be changed without affecting the engine at all.  This may seem
// silly in a program as small as this one, but we want to illustrate,
// as early as possible, that the way to go with object-oriented  
// progamming is to write relatively simple components that do single, 
// targeted jobs and that know as little as possible about one another.  
// Fo instance, GuessNumberGame doesn't rely on the fact that this
// program's user interface uses the console.  That means that we
// could replace the user interface with a graphical one without
// making any modifications to GuessNumberGame.

import java.util.Random;

public class GuessNumberGame
{
	private static Random r = new Random();
	private int targetNumber;
	
	public GuessNumberGame(int range)
	{
		targetNumber = r.nextInt(range) + 1;
	}


	public GuessResponse checkGuess(int guess)
	{
		if (targetNumber < guess)
		{
			return GuessResponse.TARGET_IS_SMALLER;
		}
		else if (targetNumber > guess)
		{
			return GuessResponse.TARGET_IS_LARGER;
		}
		else
		{
			return GuessResponse.CORRECT;
		}
	}
}