edu.pdx.cs.joy.security.GuessingGame Maven / Gradle / Ivy
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package edu.pdx.cs.joy.security;
import java.io.*;
/**
* This is a little guessing game that counts the number of times it
* takes the user to guess a number between one and ten.
*/
public class GuessingGame implements Game {
private PrintStream out = System.out;
private BufferedReader in =
new BufferedReader(new InputStreamReader(System.in));
public String getName() {
return "GuessingGame";
}
/**
* Plays the game
*/
public void play(GameConsole console) {
int number = ((int) (Math.random() * 10.0)) + 1;
out.println("I'm thinking of a number between 1 and 10");
// First get the preferences
String prefs = console.readPreferences(this);
if (prefs == null) {
System.err.println("** Couldn't read preferences");
return;
}
int highScore = -1;
try {
highScore = Integer.parseInt(prefs.trim());
out.println("The high score is: " + highScore);
} catch (NumberFormatException ex) {
// Ignore
}
// Guess the number
int guesses = 1;
while (true) {
out.print("Your guess: ");
int guess = getGuess();
if ((guess < 1) || (guess > 10)) {
out.println("Guess a number between 1 and 10");
} else if (guess > number) {
out.println("Too high!");
} else if (guess < number) {
out.println("Too low!");
} else {
out.println("You guessed right!");
break;
}
guesses++;
}
out.println("It took you " + guesses + " guesses");
if ((highScore == -1) || (guesses < highScore)) {
out.println("A new high score!");
prefs = guesses + "";
if (!console.writePreferences(this, prefs)) {
System.err.println("** Couldn't write preferences");
}
}
out.println("Thanks for playing");
}
/**
* Reads an int from System.in
*/
private int getGuess() {
try {
return Integer.parseInt(in.readLine());
} catch (NumberFormatException ex) {
return -1;
} catch (IOException ex) {
return -1;
}
}
/**
* Test program
*/
public static void main(String[] args) {
GameConsole console = new GameConsole();
Game game = new GuessingGame();
game.play(console);
}
}