mirror of
https://github.com/coding-horror/basic-computer-games.git
synced 2025-12-21 23:00:43 -08:00
193 lines
7.0 KiB
Java
193 lines
7.0 KiB
Java
import java.lang.Integer;
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import java.lang.Math;
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import java.util.Scanner;
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/**
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* Game of Orbit
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* <p>
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* Based on the BASIC game of Orbit here
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* https://github.com/coding-horror/basic-computer-games/blob/main/68%20Orbit/orbit.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 Orbit {
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private final Scanner scan; // For user input
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public Orbit() {
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scan = new Scanner(System.in);
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} // End of constructor Orbit
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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(32) + "ORBIT");
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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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System.out.println("SOMEWHERE ABOVE YOUR PLANET IS A ROMULAN SHIP.");
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System.out.println("");
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System.out.println("THE SHIP IS IN A CONSTANT POLAR ORBIT. ITS");
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System.out.println("DISTANCE FROM THE CENTER OF YOUR PLANET IS FROM");
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System.out.println("10,000 TO 30,000 MILES AND AT ITS PRESENT VELOCITY CAN");
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System.out.println("CIRCLE YOUR PLANET ONCE EVERY 12 TO 36 HOURS.");
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System.out.println("");
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System.out.println("UNFORTUNATELY, THEY ARE USING A CLOAKING DEVICE SO");
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System.out.println("YOU ARE UNABLE TO SEE THEM, BUT WITH A SPECIAL");
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System.out.println("INSTRUMENT YOU CAN TELL HOW NEAR THEIR SHIP YOUR");
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System.out.println("PHOTON BOMB EXPLODED. YOU HAVE SEVEN HOURS UNTIL THEY");
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System.out.println("HAVE BUILT UP SUFFICIENT POWER IN ORDER TO ESCAPE");
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System.out.println("YOUR PLANET'S GRAVITY.");
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System.out.println("");
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System.out.println("YOUR PLANET HAS ENOUGH POWER TO FIRE ONE BOMB AN HOUR.");
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System.out.println("");
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System.out.println("AT THE BEGINNING OF EACH HOUR YOU WILL BE ASKED TO GIVE AN");
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System.out.println("ANGLE (BETWEEN 0 AND 360) AND A DISTANCE IN UNITS OF");
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System.out.println("100 MILES (BETWEEN 100 AND 300), AFTER WHICH YOUR BOMB'S");
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System.out.println("DISTANCE FROM THE ENEMY SHIP WILL BE GIVEN.");
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System.out.println("");
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System.out.println("AN EXPLOSION WITHIN 5,000 MILES OF THE ROMULAN SHIP");
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System.out.println("WILL DESTROY IT.");
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System.out.println("");
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System.out.println("BELOW IS A DIAGRAM TO HELP YOU VISUALIZE YOUR PLIGHT.");
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System.out.println("");
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System.out.println("");
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System.out.println(" 90");
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System.out.println(" 0000000000000");
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System.out.println(" 0000000000000000000");
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System.out.println(" 000000 000000");
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System.out.println(" 00000 00000");
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System.out.println(" 00000 XXXXXXXXXXX 00000");
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System.out.println(" 00000 XXXXXXXXXXXXX 00000");
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System.out.println(" 0000 XXXXXXXXXXXXXXX 0000");
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System.out.println(" 0000 XXXXXXXXXXXXXXXXX 0000");
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System.out.println(" 0000 XXXXXXXXXXXXXXXXXXX 0000");
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System.out.println("180<== 00000 XXXXXXXXXXXXXXXXXXX 00000 ==>0");
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System.out.println(" 0000 XXXXXXXXXXXXXXXXXXX 0000");
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System.out.println(" 0000 XXXXXXXXXXXXXXXXX 0000");
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System.out.println(" 0000 XXXXXXXXXXXXXXX 0000");
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System.out.println(" 00000 XXXXXXXXXXXXX 00000");
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System.out.println(" 00000 XXXXXXXXXXX 00000");
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System.out.println(" 00000 00000");
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System.out.println(" 000000 000000");
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System.out.println(" 0000000000000000000");
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System.out.println(" 0000000000000");
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System.out.println(" 270");
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System.out.println("");
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System.out.println("X - YOUR PLANET");
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System.out.println("O - THE ORBIT OF THE ROMULAN SHIP");
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System.out.println("");
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System.out.println("ON THE ABOVE DIAGRAM, THE ROMULAN SHIP IS CIRCLING");
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System.out.println("COUNTERCLOCKWISE AROUND YOUR PLANET. DON'T FORGET THAT");
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System.out.println("WITHOUT SUFFICIENT POWER THE ROMULAN SHIP'S ALTITUDE");
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System.out.println("AND ORBITAL RATE WILL REMAIN CONSTANT.");
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System.out.println("");
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System.out.println("GOOD LUCK. THE FEDERATION IS COUNTING ON YOU.");
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} // End of method showIntro
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private void startGame() {
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double bombDistance = 0;
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int bombAltitude = 0;
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int bombAngle = 0;
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int deltaAngle = 0;
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int hour = 0;
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int shipAltitude = 0;
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int shipAngle = 0;
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int shipRate = 0;
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String userResponse = "";
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// Begin outer while loop
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while (true) {
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shipAngle = (int) (361 * Math.random());
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shipAltitude = (int) (201 * Math.random() + 200);
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shipRate = (int) (21 * Math.random() + 10);
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hour = 0;
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// Begin time limit loop
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while (hour < 7) {
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System.out.println("");
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System.out.println("");
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System.out.println("THIS IS HOUR " + (hour + 1) + ", AT WHAT ANGLE DO YOU WISH TO SEND");
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System.out.print("YOUR PHOTON BOMB? ");
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bombAngle = Integer.parseInt(scan.nextLine());
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System.out.print("HOW FAR OUT DO YOU WISH TO DETONATE IT? ");
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bombAltitude = Integer.parseInt(scan.nextLine());
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System.out.println("");
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System.out.println("");
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// Update ship position
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shipAngle += shipRate;
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// Handle full revolutions
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if (shipAngle >= 360) {
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shipAngle -= 360;
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}
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deltaAngle = Math.abs(shipAngle - bombAngle);
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// Keep angle in upper quadrants
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if (deltaAngle >= 180) {
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deltaAngle = 360 - deltaAngle;
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}
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bombDistance = Math.sqrt(shipAltitude * shipAltitude + bombAltitude * bombAltitude - 2 * shipAltitude
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* bombAltitude * Math.cos(deltaAngle * Math.PI / 180));
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System.out.format("YOUR PHOTON BOMB EXPLODED " + "%.5f" + "*10^2 MILES FROM THE\n", bombDistance);
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System.out.println("ROMULAN SHIP.");
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// Win condition
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if (bombDistance <= 50) {
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System.out.println("YOU HAVE SUCCESSFULLY COMPLETED YOUR MISSION.");
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break;
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}
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hour++;
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} // End time limit loop
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// Lose condition
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if (hour == 7) {
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System.out.println("YOU HAVE ALLOWED THE ROMULANS TO ESCAPE.");
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}
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System.out.println("ANOTHER ROMULAN SHIP HAS GONE INTO ORBIT.");
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System.out.print("DO YOU WISH TO TRY TO DESTROY IT? ");
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userResponse = scan.nextLine();
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if (!userResponse.toUpperCase().equals("YES")) {
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System.out.println("GOOD BYE.");
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break;
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}
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} // End outer while loop
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} // End of method startGame
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public static void main(String[] args) {
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Orbit game = new Orbit();
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game.play();
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} // End of method main
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} // End of class Orbit
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