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java_awaEN2.java

/*
  Created by Zachary Wander on 9/7/2016.
 */

package com.zachary.numbergame;

import java.util.InputMismatchException;
import java.util.Scanner;

import java.util.Random;

import static java.lang.Thread.sleep;

public class numbergame {

    //main function
    public static void main(String[] args) {
        while (true) { //keep game going
            try {
                Scanner in = new Scanner(System.in); //setup user input

                //intro
                System.out.println("Welcome to the Number Games.");
                System.out.println("Do you want to:");
                System.out.println("A) Guess a randomly generated number (1-100)?");
                System.out.println("B) Have the computer guess a number you come up with, within a range you specify?");
                System.out.println("C) Quit?");
                System.out.println("Choice:");

                String choice = in.nextLine(); //take user input

                //handle choice and function passing
                if (choice.toUpperCase().equals("A")){
                    humanGuess();
                }
                else if (choice.toUpperCase().equals("B")){
                    systemGuess();
                }
                else if (choice.toUpperCase().equals("C")){
                    System.out.println("BYE!");
                    break;
                }
                else {
                    System.out.println("Something happened!"); //so I know if there's an error
                }
            }
            finally {} //this needs to be here for something
        }
    }

    //the number guessing function
    public static void humanGuess() {
        Scanner in = new Scanner(System.in); //setup user input
        int number = (int) (Math.random() * 100) + 1; //generate a random number from 1-100
        int guess; //define guess variable
        int counter = 0; //to count the guesses

        //intro
        System.out.println("Guess a number between 1 and 100 (inclusive)");
        System.out.println("You have 7 guesses.");

        System.out.println(number); //DEBUG PURPOSES REMOVE

        while (true) {
            try {

                if (counter != 0) { //only tell the guess count after the user has guessed
                    System.out.println("You have guessed: " + counter + " time(s).");
                }

                //if number of guesses is reached, quit
                if (counter >= 7) {
                    System.out.println("Sorry, you've used all your guesses.");
                    System.out.println("The number was: " + number);
                    System.out.println("Press Enter to continue."); //pretty self explanatory
                    in.nextLine();
                    break;
                }

                System.out.println("Your guess:"); //get guess
                guess = in.nextInt();
                in.nextLine(); //this fixes something when exiting

                if ((guess < 1) || (guess > 100)) { //if the guess is out of bounds, tell the user
                    System.out.println("\n");
                    System.out.println("Read the instructions.");
                    System.out.println("Press Enter to continue."); //pretty self explanatory
                }

                if (guess > number) {
                    System.out.println("It's lower."); //if the guess is too high, tell user
                } else if (guess < number) {
                    System.out.println("It's Higher"); //if the guess is too low, tell user
                } else if (guess == number) {
                    counter = counter + 1; //since it counts up at the end of the loop
                    System.out.println("Correct!");
                    System.out.println("Guesses:" + counter);
                    System.out.println("Press Enter to continue."); //pretty self explanatory
                    in.nextLine(); //I think this needs to be here
                    break;
                }
                else {}
                counter = counter + 1; //raise the guess counter

            } catch (InputMismatchException e) {//if user doesn't enter an integer, complain
                System.out.println("Unusable input. Please use integers.");
                System.out.println("Press Enter to continue."); //pretty self explanatory
                in.nextLine(); //dump the bad input
                break;
            }
        }
    }

    public static void systemGuess() {
        Scanner in = new Scanner(System.in); //setup user input

        System.out.println("Think of a number and specify a range (integers only).");

        //define range variables
        int numlow = 0;
        int numhigh = 0;

        //prompt for range
        System.out.println("Enter the lowest number in the range.");
        if (in.hasNextInt()) {
            numlow = in.nextInt();
        } else { //catch non-ints
            System.out.println("Unusable input. Please use integers.");
            System.out.println("Press Enter to continue."); //pretty self explanatory
            in.nextLine(); //I think this needs to be here
            in.nextLine(); //dump the bad input
        }

        System.out.println("Enter the highest number in the range.");
        if (in.hasNextInt()) {
            numhigh = in.nextInt();
        } else { //catch non-ints
            System.out.println("Unusable input. Please use integers.");
            System.out.println("Press Enter to continue."); //pretty self explanatory
            in.nextLine(); //I think this needs to be here
            in.nextLine(); //I think this needs to be here
            in.nextLine(); //dump the bad input
        }

        if (numhigh < numlow) { //catch if range is reversed
            System.out.println("Smaller number first.");
            System.out.println("Press Enter to continue."); //pretty self explanatory
            in.nextLine(); //I think this needs to be here
            in.nextLine(); //dump the bad input
        }

        System.out.println("Range: " + numlow + " - " + numhigh + "\n\n"); //tell the user the range they specified

        //instructions
        System.out.println("Time to guess your number. You will see a guess printed.");
        System.out.println("If it is too high, type \"lower.\"");
        System.out.println("If it is too low, type \"higher.\"");
        System.out.println("If it is correct, type \"correct.\" \n");

        //make sure the user has read instructions
        System.out.println("Hit Enter to continue.");
        in.nextLine();
        in.nextLine(); //Is there a better way to do this?

        guessLoop(numhigh, numlow); //call the guessing function

        //gameover confirmation
        System.out.println("Hit Enter to go back to the menu.");
        in.nextLine();
    }

    public static int randomInt(int numhigh, int numlow) {
        //create a random guess
        Random randomNum = new Random();
        int randNum = randomNum.nextInt((numhigh - numlow) + 1) + numlow; //generate number from given range

        return randNum; //return the random guess
    }

    public static void guessLoop(int numhigh, int numlow) {
        Scanner in = new Scanner(System.in); //setup user input
        int counter = 0;
        while(true) {
            try {
                int guess = randomInt(numhigh, numlow); //call the random number function

                System.out.println("Guess: " + guess); //tell user the guess

                System.out.println("Is the number: ");
                String response = in.nextLine();

                if (response.toUpperCase().equals("LOWER")) {
                    numhigh = guess - 1;
                } else if (response.toUpperCase().equals("HIGHER")) {
                    numlow = guess + 1;
                } else if (response.toUpperCase().equals("CORRECT")) {
                    System.out.println("Great!");
                    System.out.println("It took " + (counter + 1) + " guesses to find the number.");
                    break;
                }

                counter += 1;

            } finally{}
        }
    }
}