mirror of
https://github.com/coding-horror/basic-computer-games.git
synced 2025-12-22 07:10:42 -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
252
67_One_Check/java/OneCheck.java
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252
67_One_Check/java/OneCheck.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 One Check
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* <p>
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* Based on the BASIC game of One Check here
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* https://github.com/coding-horror/basic-computer-games/blob/main/67%20One%20Check/onecheck.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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* Converted from BASIC to Java by Darren Cardenas.
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*/
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public class OneCheck {
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private final Scanner scan; // For user input
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private enum Step {
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SHOW_INSTRUCTIONS, SHOW_BOARD, GET_MOVE, GET_SUMMARY, QUERY_RETRY
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}
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public OneCheck() {
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scan = new Scanner(System.in);
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} // End of constructor OneCheck
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public void play() {
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showIntro();
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startGame();
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} // End of method play
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private static void showIntro() {
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System.out.println(" ".repeat(29) + "ONE CHECK");
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System.out.println(" ".repeat(14) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY");
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System.out.println("\n\n");
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} // End of method showIntro
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private void startGame() {
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int fromSquare = 0;
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int numJumps = 0;
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int numPieces = 0;
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int square = 0;
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int startPosition = 0;
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int toSquare = 0;
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// Move legality test variables
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int fromTest1 = 0;
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int fromTest2 = 0;
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int toTest1 = 0;
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int toTest2 = 0;
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int[] positions = new int[65];
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Step nextStep = Step.SHOW_INSTRUCTIONS;
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String lineContent = "";
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String userResponse = "";
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// Begin outer while loop
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while (true) {
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// Begin switch
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switch (nextStep) {
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case SHOW_INSTRUCTIONS:
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System.out.println("SOLITAIRE CHECKER PUZZLE BY DAVID AHL\n");
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System.out.println("48 CHECKERS ARE PLACED ON THE 2 OUTSIDE SPACES OF A");
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System.out.println("STANDARD 64-SQUARE CHECKERBOARD. THE OBJECT IS TO");
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System.out.println("REMOVE AS MANY CHECKERS AS POSSIBLE BY DIAGONAL JUMPS");
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System.out.println("(AS IN STANDARD CHECKERS). USE THE NUMBERED BOARD TO");
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System.out.println("INDICATE THE SQUARE YOU WISH TO JUMP FROM AND TO. ON");
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System.out.println("THE BOARD PRINTED OUT ON EACH TURN '1' INDICATES A");
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System.out.println("CHECKER AND '0' AN EMPTY SQUARE. WHEN YOU HAVE NO");
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System.out.println("POSSIBLE JUMPS REMAINING, INPUT A '0' IN RESPONSE TO");
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System.out.println("QUESTION 'JUMP FROM ?'\n");
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System.out.println("HERE IS THE NUMERICAL BOARD:\n");
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nextStep = Step.SHOW_BOARD;
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break;
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case SHOW_BOARD:
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// Begin loop through all squares
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for (square = 1; square <= 57; square += 8) {
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lineContent = String.format("% -4d%-4d%-4d%-4d%-4d%-4d%-4d%-4d", square, square + 1, square + 2,
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square + 3, square + 4, square + 5, square + 6, square + 7);
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System.out.println(lineContent);
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} // End loop through all squares
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System.out.println("");
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System.out.println("AND HERE IS THE OPENING POSITION OF THE CHECKERS.");
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System.out.println("");
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Arrays.fill(positions, 1);
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// Begin generating start positions
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for (square = 19; square <= 43; square += 8) {
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for (startPosition = square; startPosition <= square + 3; startPosition++) {
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positions[startPosition] = 0;
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}
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} // End generating start positions
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numJumps = 0;
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printBoard(positions);
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nextStep = Step.GET_MOVE;
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break;
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case GET_MOVE:
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System.out.print("JUMP FROM? ");
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fromSquare = scan.nextInt();
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scan.nextLine(); // Discard newline
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// User requested summary
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if (fromSquare == 0) {
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nextStep = Step.GET_SUMMARY;
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break;
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}
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System.out.print("TO? ");
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toSquare = scan.nextInt();
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scan.nextLine(); // Discard newline
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System.out.println("");
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// Check legality of move
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fromTest1 = (int) Math.floor((fromSquare - 1.0) / 8.0);
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fromTest2 = fromSquare - 8 * fromTest1;
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toTest1 = (int) Math.floor((toSquare - 1.0) / 8.0);
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toTest2 = toSquare - 8 * toTest1;
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if ((fromTest1 > 7) ||
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(toTest1 > 7) ||
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(fromTest2 > 8) ||
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(toTest2 > 8) ||
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(Math.abs(fromTest1 - toTest1) != 2) ||
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(Math.abs(fromTest2 - toTest2) != 2) ||
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(positions[(toSquare + fromSquare) / 2] == 0) ||
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(positions[fromSquare] == 0) ||
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(positions[toSquare] == 1)) {
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System.out.println("ILLEGAL MOVE. TRY AGAIN...");
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nextStep = Step.GET_MOVE;
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break;
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}
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positions[toSquare] = 1;
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positions[fromSquare] = 0;
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positions[(toSquare + fromSquare) / 2] = 0;
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numJumps++;
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printBoard(positions);
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nextStep = Step.GET_MOVE;
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break;
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case GET_SUMMARY:
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numPieces = 0;
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// Count remaining pieces
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for (square = 1; square <= 64; square++) {
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numPieces += positions[square];
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}
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System.out.println("");
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System.out.println("YOU MADE " + numJumps + " JUMPS AND HAD " + numPieces + " PIECES");
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System.out.println("REMAINING ON THE BOARD.\n");
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nextStep = Step.QUERY_RETRY;
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break;
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case QUERY_RETRY:
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while (true) {
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System.out.print("TRY AGAIN? ");
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userResponse = scan.nextLine();
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System.out.println("");
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if (userResponse.toUpperCase().equals("YES")) {
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nextStep = Step.SHOW_BOARD;
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break;
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}
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else if (userResponse.toUpperCase().equals("NO")) {
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System.out.println("O.K. HOPE YOU HAD FUN!!");
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return;
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}
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else {
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System.out.println("PLEASE ANSWER 'YES' OR 'NO'.");
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}
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}
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break;
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default:
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System.out.println("INVALID STEP");
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nextStep = Step.QUERY_RETRY;
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break;
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} // End of switch
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} // End outer while loop
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} // End of method startGame
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public void printBoard(int[] positions) {
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int column = 0;
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int row = 0;
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String lineContent = "";
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// Begin loop through all rows
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for (row = 1; row <= 57; row += 8) {
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// Begin loop through all columns
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for (column = row; column <= row + 7; column++) {
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lineContent += " " + positions[column];
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} // End loop through all columns
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System.out.println(lineContent);
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lineContent = "";
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} // End loop through all rows
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System.out.println("");
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} // End of method printBoard
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public static void main(String[] args) {
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OneCheck game = new OneCheck();
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game.play();
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} // End of method main
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} // End of class OneCheck
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