mirror of
https://github.com/coding-horror/basic-computer-games.git
synced 2025-12-25 12:25:10 -08:00
Removed spaces from top-level directory names.
Spaces tend to cause annoyances in a Unix-style shell environment. This change fixes that.
This commit is contained in:
3
74_Rock_Scissors_Paper/java/README.md
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3
74_Rock_Scissors_Paper/java/README.md
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Original source downloaded [from Vintage Basic](http://www.vintage-basic.net/games.html)
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Conversion to [Oracle Java](https://openjdk.java.net/)
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212
74_Rock_Scissors_Paper/java/src/RockScissors.java
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74_Rock_Scissors_Paper/java/src/RockScissors.java
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import java.util.Arrays;
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import java.util.Scanner;
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/**
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* Game of Rock Scissors Paper
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* <p>
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* Based on the Basic game of Rock Scissors here
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* https://github.com/coding-horror/basic-computer-games/blob/main/74%20Rock%20Scissors%20Paper/rockscissors.bas
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* <p>
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* Note: The idea was to create a version of the 1970's Basic game in Java, without introducing
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* new features - no additional text, error checking, etc has been added.
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*/
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public class RockScissors {
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public static final int MAX_GAMES = 10;
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public static final int PAPER = 1;
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public static final int SCISSORS = 2;
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public static final int ROCK = 3;
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// Used for keyboard input
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private final Scanner kbScanner;
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private enum GAME_STATE {
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START_GAME,
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GET_NUMBER_GAMES,
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START_ROUND,
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PLAY_ROUND,
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GAME_RESULT,
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GAME_OVER
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}
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// Current game state
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private GAME_STATE gameState;
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private enum WINNER {
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COMPUTER,
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PLAYER
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}
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private WINNER gameWinner;
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int playerWins;
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int computerWins;
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int numberOfGames;
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int currentGameCount;
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int computersChoice;
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public RockScissors() {
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kbScanner = new Scanner(System.in);
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gameState = GAME_STATE.START_GAME;
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}
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/**
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* Main game loop
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*/
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public void play() {
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do {
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switch (gameState) {
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case START_GAME:
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intro();
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currentGameCount = 0;
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gameState = GAME_STATE.GET_NUMBER_GAMES;
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break;
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case GET_NUMBER_GAMES:
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numberOfGames = displayTextAndGetNumber("HOW MANY GAMES? ");
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if (numberOfGames <= MAX_GAMES) {
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gameState = GAME_STATE.START_ROUND;
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} else {
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System.out.println("SORRY, BUT WE AREN'T ALLOWED TO PLAY THAT MANY.");
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}
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break;
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case START_ROUND:
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currentGameCount++;
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if (currentGameCount > numberOfGames) {
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gameState = GAME_STATE.GAME_RESULT;
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break;
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}
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System.out.println("GAME NUMBER: " + (currentGameCount));
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computersChoice = (int) (Math.random() * 3) + 1;
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gameState = GAME_STATE.PLAY_ROUND;
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case PLAY_ROUND:
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System.out.println("3=ROCK...2=SCISSORS...1=PAPER");
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int playersChoice = displayTextAndGetNumber("1...2...3...WHAT'S YOUR CHOICE? ");
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if (playersChoice >= PAPER && playersChoice <= ROCK) {
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switch (computersChoice) {
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case PAPER:
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System.out.println("...PAPER");
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break;
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case SCISSORS:
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System.out.println("...SCISSORS");
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break;
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case ROCK:
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System.out.println("...ROCK");
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break;
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}
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if (playersChoice == computersChoice) {
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System.out.println("TIE GAME. NO WINNER.");
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} else {
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switch (playersChoice) {
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case PAPER:
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if (computersChoice == SCISSORS) {
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gameWinner = WINNER.COMPUTER;
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} else if (computersChoice == ROCK) {
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// Don't need to re-assign here, as its initialized to
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// false I'd argue this aids readability.
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gameWinner = WINNER.PLAYER;
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}
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break;
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case SCISSORS:
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if (computersChoice == ROCK) {
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gameWinner = WINNER.COMPUTER;
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} else if (computersChoice == PAPER) {
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// Don't need to re-assign here, as its initialized to
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// false I'd argue this aids readability.
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gameWinner = WINNER.PLAYER;
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}
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break;
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case ROCK:
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if (computersChoice == PAPER) {
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gameWinner = WINNER.COMPUTER;
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} else if (computersChoice == SCISSORS) {
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// Don't need to re-assign here, as its initialized to
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// false I'd argue this aids readability.
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gameWinner = WINNER.PLAYER;
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}
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break;
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}
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if (gameWinner == WINNER.COMPUTER) {
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System.out.println("WOW! I WIN!!!");
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computerWins++;
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} else {
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System.out.println("YOU WIN!!!");
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playerWins++;
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}
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}
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gameState = GAME_STATE.START_ROUND;
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} else {
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System.out.println("INVALID.");
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}
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break;
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case GAME_RESULT:
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System.out.println();
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System.out.println("HERE IS THE FINAL GAME SCORE:");
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System.out.println("I HAVE WON " + computerWins + " GAME" + (computerWins != 1 ? "S." : "."));
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System.out.println("YOU HAVE WON " + playerWins + " GAME" + (playerWins != 1 ? "S." : "."));
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int tiedGames = numberOfGames - (computerWins + playerWins);
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System.out.println("AND " + tiedGames + " GAME" + (tiedGames != 1 ? "S " : " ") + "ENDED IN A TIE.");
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System.out.println();
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System.out.println("THANKS FOR PLAYING!!");
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gameState = GAME_STATE.GAME_OVER;
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}
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} while (gameState != GAME_STATE.GAME_OVER);
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}
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private void intro() {
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System.out.println(addSpaces(21) + "GAME OF ROCK, SCISSORS, PAPER");
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System.out.println(addSpaces(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY");
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System.out.println();
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}
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/*
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* Print a message on the screen, then accept input from Keyboard.
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* Converts input to an Integer
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*
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* @param text message to be displayed on screen.
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* @return what was typed by the player.
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*/
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private int displayTextAndGetNumber(String text) {
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return Integer.parseInt(displayTextAndGetInput(text));
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}
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/*
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* Print a message on the screen, then accept input from Keyboard.
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*
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* @param text message to be displayed on screen.
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* @return what was typed by the player.
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*/
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private String displayTextAndGetInput(String text) {
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System.out.print(text);
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return kbScanner.nextLine();
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}
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/**
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* Return a string of x spaces
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*
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* @param spaces number of spaces required
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* @return String with number of spaces
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*/
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private String addSpaces(int spaces) {
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char[] spacesTemp = new char[spaces];
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Arrays.fill(spacesTemp, ' ');
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return new String(spacesTemp);
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}
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public static void main(String[] args) {
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RockScissors rockScissors = new RockScissors();
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rockScissors.play();
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}
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}
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