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https://github.com/coding-horror/basic-computer-games.git
synced 2025-12-25 20:34:32 -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:
Chris Reuter
318
69_Pizza/java/src/Pizza.java
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318
69_Pizza/java/src/Pizza.java
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import java.util.Scanner;
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/**
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* Game of Pizza
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* <p>
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* Based on the Basic game of Hurkle here
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* https://github.com/coding-horror/basic-computer-games/blob/main/69%20Pizza/pizza.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 Pizza {
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private final int MAX_DELIVERIES = 5;
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private enum GAME_STATE {
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STARTING,
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ENTER_NAME,
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DRAW_MAP,
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MORE_DIRECTIONS,
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START_DELIVER,
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DELIVER_PIZZA,
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TOO_DIFFICULT,
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END_GAME,
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GAME_OVER
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}
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// houses that can order pizza
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private final char[] houses = new char[]{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
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'J', 'K', 'L', 'M', 'N', 'O', 'P'};
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// size of grid
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private final int[] gridPos = new int[]{1, 2, 3, 4};
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private GAME_STATE gameState;
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private String playerName;
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// How many pizzas have been successfully delivered
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private int pizzaDeliveryCount;
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// current house that ordered a pizza
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private int currentHouseDelivery;
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// Used for keyboard input
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private final Scanner kbScanner;
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public Pizza() {
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gameState = GAME_STATE.STARTING;
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// Initialise kb scanner
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kbScanner = new Scanner(System.in);
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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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// Show an introduction the first time the game is played.
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case STARTING:
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init();
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intro();
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gameState = GAME_STATE.ENTER_NAME;
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break;
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// Enter the players name
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case ENTER_NAME:
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playerName = displayTextAndGetInput("WHAT IS YOUR FIRST NAME? ");
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System.out.println("HI " + playerName + ". IN GAME YOU ARE TO TAKE ORDERS");
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System.out.println("FOR PIZZAS. THEN YOU ARE TO TELL A DELIVERY BOY");
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System.out.println("WHERE TO DELIVER THE ORDERED PIZZAS.");
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System.out.println();
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gameState = GAME_STATE.DRAW_MAP;
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break;
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// Draw the map
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case DRAW_MAP:
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drawMap();
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gameState = GAME_STATE.MORE_DIRECTIONS;
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break;
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// need more directions (how to play) ?
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case MORE_DIRECTIONS:
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extendedIntro();
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String moreInfo = displayTextAndGetInput("DO YOU NEED MORE DIRECTIONS? ");
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if (!yesOrNoEntered(moreInfo)) {
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System.out.println("'YES' OR 'NO' PLEASE, NOW THEN,");
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} else {
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// More instructions selected
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if (yesEntered(moreInfo)) {
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displayMoreDirections();
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// Player understand now?
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if (yesEntered(displayTextAndGetInput("UNDERSTAND? "))) {
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System.out.println("GOOD. YOU ARE NOW READY TO START TAKING ORDERS.");
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System.out.println();
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System.out.println("GOOD LUCK!!");
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System.out.println();
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gameState = GAME_STATE.START_DELIVER;
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} else {
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// Not understood, essentially game over
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gameState = GAME_STATE.TOO_DIFFICULT;
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}
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} else {
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// no more directions were needed, start delivering pizza
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gameState = GAME_STATE.START_DELIVER;
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}
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}
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break;
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// Too difficult to understand, game over!
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case TOO_DIFFICULT:
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System.out.println("JOB IS DEFINITELY TOO DIFFICULT FOR YOU. THANKS ANYWAY");
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gameState = GAME_STATE.GAME_OVER;
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break;
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// Delivering pizza
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case START_DELIVER:
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// select a random house and "order" a pizza for them.
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currentHouseDelivery = (int) (Math.random()
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* (houses.length) + 1) - 1; // Deduct 1 for 0-based array
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System.out.println("HELLO " + playerName + "'S PIZZA. THIS IS "
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+ houses[currentHouseDelivery] + ".");
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System.out.println(" PLEASE SEND A PIZZA.");
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gameState = GAME_STATE.DELIVER_PIZZA;
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break;
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// Try and deliver the pizza
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case DELIVER_PIZZA:
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String question = " DRIVER TO " + playerName + ": WHERE DOES "
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+ houses[currentHouseDelivery] + " LIVE ? ";
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String answer = displayTextAndGetInput(question);
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// Convert x,y entered by player to grid position of a house
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int x = getDelimitedValue(answer, 0);
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int y = getDelimitedValue(answer, 1);
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int calculatedPos = (x + (y - 1) * 4) - 1;
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// Did the player select the right house to deliver?
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if (calculatedPos == currentHouseDelivery) {
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System.out.println("HELLO " + playerName + ". THIS IS " + houses[currentHouseDelivery]
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+ ", THANKS FOR THE PIZZA.");
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pizzaDeliveryCount++;
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// Delivered enough pizza?
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if (pizzaDeliveryCount > MAX_DELIVERIES) {
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gameState = GAME_STATE.END_GAME;
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} else {
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gameState = GAME_STATE.START_DELIVER;
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}
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} else {
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System.out.println("THIS IS " + houses[calculatedPos] + ". I DID NOT ORDER A PIZZA.");
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System.out.println("I LIVE AT " + x + "," + y);
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// Don't change gameState so state is executed again
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}
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break;
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// Sign off message for cases where the Chief is not upset
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case END_GAME:
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if (yesEntered(displayTextAndGetInput("DO YOU WANT TO DELIVER MORE PIZZAS? "))) {
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init();
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gameState = GAME_STATE.START_DELIVER;
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} else {
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System.out.println();
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System.out.println("O.K. " + playerName + ", SEE YOU LATER!");
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System.out.println();
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gameState = GAME_STATE.GAME_OVER;
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}
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break;
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// GAME_OVER State does not specifically have a case
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}
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} while (gameState != GAME_STATE.GAME_OVER);
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}
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private void drawMap() {
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System.out.println("MAP OF THE CITY OF HYATTSVILLE");
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System.out.println();
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System.out.println(" -----1-----2-----3-----4-----");
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int k = 3;
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for (int i = 1; i < 5; i++) {
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System.out.println("-");
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System.out.println("-");
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System.out.println("-");
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System.out.println("-");
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System.out.print(gridPos[k]);
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int pos = 16 - 4 * i;
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System.out.print(" " + houses[pos]);
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System.out.print(" " + houses[pos + 1]);
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System.out.print(" " + houses[pos + 2]);
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System.out.print(" " + houses[pos + 3]);
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System.out.println(" " + gridPos[k]);
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k = k - 1;
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}
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System.out.println("-");
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System.out.println("-");
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System.out.println("-");
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System.out.println("-");
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System.out.println(" -----1-----2-----3-----4-----");
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}
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/**
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* Basic information about the game
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*/
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private void intro() {
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System.out.println("PIZZA");
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System.out.println("CREATIVE COMPUTING MORRISTOWN, NEW JERSEY");
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System.out.println();
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System.out.println();
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System.out.println("PIZZA DELIVERY GAME");
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System.out.println();
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}
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private void extendedIntro() {
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System.out.println("THE OUTPUT IS A MAP OF THE HOMES WHERE");
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System.out.println("YOU ARE TO SEND PIZZAS.");
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System.out.println();
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System.out.println("YOUR JOB IS TO GIVE A TRUCK DRIVER");
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System.out.println("THE LOCATION OR COORDINATES OF THE");
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System.out.println("HOME ORDERING THE PIZZA.");
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System.out.println();
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}
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private void displayMoreDirections() {
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System.out.println();
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System.out.println("SOMEBODY WILL ASK FOR A PIZZA TO BE");
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System.out.println("DELIVERED. THEN A DELIVERY BOY WILL");
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System.out.println("ASK YOU FOR THE LOCATION.");
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System.out.println(" EXAMPLE:");
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System.out.println("THIS IS J. PLEASE SEND A PIZZA.");
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System.out.println("DRIVER TO " + playerName + ". WHERE DOES J LIVE?");
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System.out.println("YOUR ANSWER WOULD BE 2,3");
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System.out.println();
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}
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private void init() {
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pizzaDeliveryCount = 1;
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}
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/**
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* Accepts a string delimited by comma's and returns the nth delimited
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* value (starting at count 0).
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*
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* @param text - text with values separated by comma's
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* @param pos - which position to return a value for
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* @return the int representation of the value
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*/
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private int getDelimitedValue(String text, int pos) {
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String[] tokens = text.split(",");
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return Integer.parseInt(tokens[pos]);
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}
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/**
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* Returns true if a given string is equal to at least one of the values specified in the call
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* to the stringIsAnyValue method
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*
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* @param text string to search
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* @return true if string is equal to one of the varargs
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*/
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private boolean yesEntered(String text) {
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return stringIsAnyValue(text, "Y", "YES");
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}
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/**
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* returns true if Y, YES, N, or NO was the compared value in text
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* case-insensitive
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*
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* @param text search string
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* @return true if one of the varargs was found in text
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*/
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private boolean yesOrNoEntered(String text) {
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return stringIsAnyValue(text, "Y", "YES", "N", "NO");
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}
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/**
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* Returns true if a given string contains at least one of the varargs (2nd parameter).
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* Note: Case insensitive comparison.
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*
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* @param text string to search
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* @param values varargs of type string containing values to compare
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* @return true if one of the varargs arguments was found in text
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*/
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private boolean stringIsAnyValue(String text, String... values) {
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// Cycle through the variable number of values and test each
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for (String val : values) {
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if (text.equalsIgnoreCase(val)) {
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return true;
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}
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}
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// no matches
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return false;
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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.next();
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}
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}
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8
69_Pizza/java/src/PizzaGame.java
Normal file
8
69_Pizza/java/src/PizzaGame.java
Normal file
@@ -0,0 +1,8 @@
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public class PizzaGame {
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public static void main(String[] args) {
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Pizza pizza = new Pizza();
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pizza.play();
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}
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}
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