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Merge pull request #195 from journich/main

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Port of Hamurabi to Java (WIP)
This commit is contained in:
Jeff Atwood
2021-03-03 20:54:11 -08:00
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parent 4540208210 b2d4607713
commit fb0b7fe20e
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307
43 Hammurabi/java/src/Hamurabi.java Normal file
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import java.util.Arrays;
import java.util.Scanner;
/**
* Game of Hamurabi
* <p>
* Based on the Basic game of Hamurabi here
* https://github.com/coding-horror/basic-computer-games/blob/main/43%20Hammurabi/hammurabi.bas
* <p>
* Note: The idea was to create a version of the 1970's Basic game in Java, without introducing
* new features - no additional text, error checking, etc has been added.
*/
public class Hamurabi {
private int year;
private int population;
private int acres;
private int bushels;
private int harvest;
private int landTradingAt;
private int cameToCity;
private int died;
private int q;
private int ratsAte;
private double peopleFed;
private double totalPlanted;
private double percentageStarved;
private int acresToPlant;
private int bushelsToFeedPeople;
// Used for keyboard input
private final Scanner kbScanner;
private enum GAME_STATE {
STARTUP,
INIT,
YEAR_CYCLE,
BUY_ACRES,
SELL_ACRES,
FEED_PEOPLE,
PLANT_SEED,
CALCULATE_HARVEST,
CALCULATE_BABIES,
RESULTS,
GAME_OVER
}
// Current game state
private GAME_STATE gameState;
public Hamurabi() {
kbScanner = new Scanner(System.in);
gameState = GAME_STATE.STARTUP;
}
/**
* Main game loop
*/
public void play() {
do {
switch (gameState) {
case STARTUP:
intro();
gameState = GAME_STATE.INIT;
break;
case INIT:
// These are hard coded startup figures from the basic program
year = 0;
population = 95;
bushels = 2800;
harvest = 3000;
landTradingAt = 3;
acres = harvest / landTradingAt;
cameToCity = 5;
died = 0;
q = 1;
ratsAte = harvest - bushels;
peopleFed = 0;
totalPlanted = 0;
percentageStarved = 0;
acresToPlant = 0;
bushelsToFeedPeople = 0;
gameState = GAME_STATE.YEAR_CYCLE;
break;
case YEAR_CYCLE:
System.out.println();
year += 1;
System.out.println("HAMURABI: I BEG TO REPORT TO YOU,");
System.out.println("IN YEAR " + year + "," + died + " PEOPLE STARVED," + cameToCity + " CAME TO THE CITY,");
population += cameToCity;
if (q == 0) {
population /= 2;
System.out.println("A HORRIBLE PLAGUE STRUCK! HALF THE PEOPLE DIED.");
}
System.out.println("POPULATION IS NOW " + population);
System.out.println("THE CITY NOW OWNS " + acres + " ACRES.");
System.out.println("YOU HARVESTED " + landTradingAt + " BUSHELS PER ACRE.");
System.out.println("THE RATS ATE " + ratsAte + " BUSHELS.");
System.out.println("YOU NOW HAVE " + bushels + " BUSHELS IN STORE.");
System.out.println();
peopleFed = (int) (Math.random() * 10);
landTradingAt = (int) peopleFed + 17;
System.out.println("LAND IS TRADING AT " + landTradingAt + " BUSHELS PER ACRE.");
gameState = GAME_STATE.BUY_ACRES;
break;
case BUY_ACRES:
int acresToBuy = displayTextAndGetNumber("HOW MANY ACRES DO YOU WISH TO BUY? ");
if (acresToBuy < 0) {
gameState = GAME_STATE.GAME_OVER;
}
if(acresToBuy >0) {
if ((landTradingAt * acresToBuy) > bushels) {
System.out.println("HAMURABI: THINK AGAIN. YOU HAVE ONLY");
System.out.println(bushels + " BUSHELS OF GRAIN. NOW THEN,");
} else {
if (q == 0) {
gameState = GAME_STATE.SELL_ACRES;
} else {
acres += acresToBuy;
bushels -= (landTradingAt * acresToBuy);
peopleFed = 0;
gameState = GAME_STATE.FEED_PEOPLE;
}
}
} else {
// 0 entered as buy so try to sell
gameState = GAME_STATE.SELL_ACRES;
}
break;
case SELL_ACRES:
int acresToSell = displayTextAndGetNumber("HOW MANY ACRES DO YOU WISH TO SELL? ");
if (acresToSell < 0) {
gameState = GAME_STATE.GAME_OVER;
}
if (acresToSell < acres) {
acres -= acresToSell;
bushels += (landTradingAt * acresToSell);
gameState = GAME_STATE.FEED_PEOPLE;
} else {
System.out.println("HAMURABI: THINK AGAIN. YOU OWN ONLY " + acres + " ACRES. NOW THEN,");
}
break;
case FEED_PEOPLE:
bushelsToFeedPeople = displayTextAndGetNumber("HOW MANY BUSHELS DO YOU WISH TO FEED YOUR PEOPLE ? ");
if (bushelsToFeedPeople < 0) {
gameState = GAME_STATE.GAME_OVER;
}
if (bushelsToFeedPeople <= bushels) {
bushels -= bushelsToFeedPeople;
peopleFed = 1;
gameState = GAME_STATE.PLANT_SEED;
} else {
System.out.println("HAMURABI: THINK AGAIN. YOU HAVE ONLY");
System.out.println(bushels + " BUSHELS OF GRAIN. NOW THEN,");
}
break;
case PLANT_SEED:
acresToPlant = displayTextAndGetNumber("HOW MANY ACRES DO YOU WISH TO PLANT WITH SEED ? ");
if (acresToPlant < 0) {
gameState = GAME_STATE.GAME_OVER;
}
if (acresToPlant <= acres) {
if(acresToPlant/2 <= bushels) {
if(acresToPlant < 10*population) {
bushels -= acresToPlant/2;
peopleFed = (int) (Math.random()*5)+1;
landTradingAt = (int) peopleFed;
harvest = acresToPlant * landTradingAt;
ratsAte = 0;
gameState = GAME_STATE.CALCULATE_HARVEST;
} else {
System.out.println("BUT YOU HAVE ONLY " + population + " PEOPLE TO TEND THE FIELDS! NOW THEN,");
}
} else {
System.out.println("HAMURABI: THINK AGAIN. YOU HAVE ONLY");
System.out.println("BUSHELS OF GRAIN. NOW THEN,");
}
} else {
System.out.println("HAMURABI: THINK AGAIN. YOU OWN ONLY " + acres + " ACRES. NOW THEN,");
}
break;
case CALCULATE_HARVEST:
if( (int) (peopleFed/2) == peopleFed/2) {
// Rats are running wild
ratsAte = (int) (bushels / peopleFed);
}
bushels = bushels - ratsAte;
bushels += harvest;
gameState = GAME_STATE.CALCULATE_BABIES;
break;
case CALCULATE_BABIES:
cameToCity = (int) (peopleFed*(20*acres+bushels)/population/100+1);
peopleFed = (int) (bushelsToFeedPeople/20);
q = (int) ((10*(Math.random()*2)-.3));
if(population <peopleFed) {
gameState = GAME_STATE.YEAR_CYCLE;
}
double starved = population - peopleFed;
if(starved>.45*population) {
System.out.println();
System.out.println("YOU STARVED " + (int) starved + " PEOPLE IN ONE YEAR!!!");
System.out.println("DUE TO THIS EXTREME MISMANAGEMENT YOU HAVE NOT ONLY");
System.out.println("BEEN IMPEACHED AND THROWN OUT OF OFFICE BUT YOU HAVE");
System.out.println("ALSO BEEN DECLARED NATIONAL FINK!!!!");
gameState = GAME_STATE.GAME_OVER;
} else {
percentageStarved = ((year-1)*percentageStarved+(double) (acresToPlant*100/population))/year;
population = (int) peopleFed;
totalPlanted += acresToPlant;
gameState = GAME_STATE.YEAR_CYCLE;
}
break;
}
} while (gameState != GAME_STATE.GAME_OVER);
}
private void intro() {
System.out.println(simulateTabs(32) + "HAMURABI");
System.out.println(simulateTabs(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY");
System.out.println();
System.out.println("TRY YOUR HAND AT GOVERNING ANCIENT SUMERIA");
System.out.println("FOR A TEN-YEAR TERM OF OFFICE.");
System.out.println();
}
private boolean calculate(double playerAnswer, double correctAnswer) {
boolean gotItRight = false;
if (Math.abs((playerAnswer - correctAnswer) / correctAnswer) < 0.15) {
System.out.println("CLOSE ENOUGH");
gotItRight = true;
} else {
System.out.println("NOT EVEN CLOSE");
}
System.out.println("CORRECT ANSWER IS " + correctAnswer);
System.out.println();
return gotItRight;
}
/*
* Print a message on the screen, then accept input from Keyboard.
* Converts input to an Integer
*
* @param text message to be displayed on screen.
* @return what was typed by the player.
*/
private int displayTextAndGetNumber(String text) {
return Integer.parseInt(displayTextAndGetInput(text));
}
/*
* Print a message on the screen, then accept input from Keyboard.
*
* @param text message to be displayed on screen.
* @return what was typed by the player.
*/
private String displayTextAndGetInput(String text) {
System.out.print(text);
return kbScanner.next();
}
/**
* Simulate the old basic tab(xx) command which indented text by xx spaces.
*
* @param spaces number of spaces required
* @return String with number of spaces
*/
private String simulateTabs(int spaces) {
char[] spacesTemp = new char[spaces];
Arrays.fill(spacesTemp, ' ');
return new String(spacesTemp);
}
}

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43 Hammurabi/java/src/HamurabiGame.java Normal file
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public class HamurabiGame {
public static void main(String[] args) {
Hamurabi hamurabi = new Hamurabi();
hamurabi.play();
}
}