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https://github.com/coding-horror/basic-computer-games.git
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initial kotlin implementation of "King"
This commit is contained in:
Paul Holt
586
53_King/kotlin/King.kt
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586
53_King/kotlin/King.kt
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@@ -0,0 +1,586 @@
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import kotlin.math.abs
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import kotlin.random.Random
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import kotlin.system.exitProcess
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lateinit var gameState: GameState
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const val INCLUDE_BUGS_FROM_ORIGINAL = false
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val rnd: Double get() = Random.nextDouble()
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fun tab(i: Int) = " ".repeat(i)
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class EndOfInputException : Throwable()
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fun main() {
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header()
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print("DO YOU WANT INSTRUCTIONS? ")
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readLine()?.apply {
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gameState = if (startsWith("AGAIN")) loadOldGame() else GameState()
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if (startsWith("Y")) instructions(gameState.yearsRequired)
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}
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?: throw EndOfInputException()
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try {
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with(gameState) {
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while(currentYear < yearsRequired) {
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recalculateLandCost()
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displayStatus()
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inputLandSale()
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performLandSale()
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inputWelfare()
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performWelfare()
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inputPlantingArea()
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performPlanting()
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inputPollutionControl()
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if (zeroInput()) {
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displayExitMessage()
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exitProcess(0)
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}
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simulateOneYear()
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currentYear ++
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}
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}
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win(gameState.yearsRequired)
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} catch (e: GameEndingException) {
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e.displayConsequences()
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}
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}
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private fun header() {
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println("${tab(34)}KING")
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println("${tab(14)}CREATIVE COMPUTING MORRISTOWN, NEW JERSEY")
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println()
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println()
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println()
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}
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fun instructions(yearsRequired: Int) {
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println("""
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CONGRATULATIONS! YOU'VE JUST BEEN ELECTED PREMIER OF SETATS
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DETINU, A SMALL COMMUNIST ISLAND 30 BY 70 MILES LONG. YOUR
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JOB IS TO DECIDE UPON THE CONTRY'S BUDGET AND DISTRIBUTE
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MONEY TO YOUR COUNTRYMEN FROM THE COMMUNAL TREASURY.
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THE MONEY SYSTEM IS RALLODS, AND EACH PERSON NEEDS 100
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RALLODS PER YEAR TO SURVIVE. YOUR COUNTRY'S INCOME COMES
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FROM FARM PRODUCE AND TOURISTS VISITING YOUR MAGNIFICENT
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FORESTS, HUNTING, FISHING, ETC. HALF YOUR LAND IS FARM LAND
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WHICH ALSO HAS AN EXCELLENT MINERAL CONTENT AND MAY BE SOLD
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TO FOREIGN INDUSTRY (STRIP MINING) WHO IMPORT AND SUPPORT
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THEIR OWN WORKERS. CROPS COST BETWEEN 10 AND 15 RALLODS PER
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SQUARE MILE TO PLANT.
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YOUR GOAL IS TO COMPLETE YOUR $yearsRequired YEAR TERM OF OFFICE.
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GOOD LUCK!
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""".trimIndent()
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)
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}
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fun loadOldGame(): GameState = GameState().apply {
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do {
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var retry = false
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print("HOW MANY YEARS HAD YOU BEEN IN OFFICE WHEN INTERRUPTED? ")
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currentYear = numberInput()
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if (currentYear <= 0)
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throw GameEndingException.DataEntryValidation()
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if (currentYear >= yearsRequired) {
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println(" COME ON, YOUR TERM IN OFFICE IS ONLY $yearsRequired YEARS.")
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retry = true
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}
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} while (retry)
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print("HOW MUCH DID YOU HAVE IN THE TREASURY? ")
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rallods = numberInput()
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if (rallods < 0)
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throw GameEndingException.DataEntryValidation()
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print("HOW MANY WORKERS? ")
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foreignWorkers = numberInput()
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if (foreignWorkers < 0)
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throw GameEndingException.DataEntryValidation()
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do {
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var retry = false
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print("HOW MANY SQUARE MILES OF LAND? ")
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landArea = numberInput()
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if (landArea<0)
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throw GameEndingException.DataEntryValidation()
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if (landArea > 2000 || landArea <= 1000) {
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println(" COME ON, YOU STARTED WITH 1000 SQ. MILES OF FARM LAND")
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println(" AND 10,000 SQ. MILES OF FOREST LAND.")
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retry = true
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}
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} while (retry)
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}
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/**
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* All exceptions which indicate the premature ending of the game, due
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* to mismanagement, starvation, revolution, or mis-entry of a game state.
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*/
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sealed class GameEndingException : Throwable() {
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abstract fun displayConsequences()
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fun finalFate() {
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if (rnd < .5) {
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println("YOU HAVE BEEN THROWN OUT OF OFFICE AND ARE NOW")
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println("RESIDING IN PRISON.")
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} else {
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println("YOU HAVE BEEN ASSASSINATED.")
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}
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println()
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println()
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}
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class ExtremeMismanagement(private val death: Int) : GameEndingException() {
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override fun displayConsequences() {
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println()
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println("$death COUNTRYMEN DIED IN ONE YEAR!!!!!")
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println("DUE TO THIS EXTREME MISMANAGEMENT, YOU HAVE NOT ONLY")
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println("BEEN IMPEACHED AND THROWN OUT OF OFFICE, BUT YOU")
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println(
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when ((rnd * 10.0).toInt()) {
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in 0..3 -> "ALSO HAD YOUR LEFT EYE GOUGED OUT!"
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in 4..6 -> "HAVE ALSO GAINED A VERY BAD REPUTATION."
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else -> "HAVE ALSO BEEN DECLARED NATIONAL FINK."
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}
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)
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}
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}
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class TooManyPeopleDead : GameEndingException() {
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// The mistyping of "population" is in the original game.
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override fun displayConsequences() {
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println("""
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OVER ONE THIRD OF THE POPULTATION HAS DIED SINCE YOU
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WERE ELECTED TO OFFICE. THE PEOPLE (REMAINING)
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HATE YOUR GUTS.
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""".trimIndent())
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finalFate()
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}
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}
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class AntiImmigrationRevolution : GameEndingException() {
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override fun displayConsequences() {
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println("""
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THE NUMBER OF FOREIGN WORKERS HAS EXCEEDED THE NUMBER
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OF COUNTRYMEN. AS A MINORITY, THEY HAVE REVOLTED AND
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TAKEN OVER THE COUNTRY.
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""".trimIndent())
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finalFate()
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}
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}
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class StarvationWithFullTreasury : GameEndingException() {
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override fun displayConsequences() {
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println("""
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MONEY WAS LEFT OVER IN THE TREASURY WHICH YOU DID
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NOT SPEND. AS A RESULT, SOME OF YOUR COUNTRYMEN DIED
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OF STARVATION. THE PUBLIC IS ENRAGED AND YOU HAVE
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BEEN FORCED TO EITHER RESIGN OR COMMIT SUICIDE.
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THE CHOICE IS YOURS.
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IF YOU CHOOSE THE LATTER, PLEASE TURN OFF YOUR COMPUTER
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BEFORE PROCEEDING.
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""".trimIndent())
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}
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}
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class DataEntryValidation : GameEndingException() {
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override fun displayConsequences() {
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// no action
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}
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}
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}
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fun win(yearsRequired: Int) {
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// The misspelling of "successfully" is in the original code.
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println("""
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CONGRATULATIONS!!!!!!!!!!!!!!!!!!
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YOU HAVE SUCCESFULLY COMPLETED YOUR $yearsRequired YEAR TERM
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OF OFFICE. YOU WERE, OF COURSE, EXTREMELY LUCKY, BUT
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NEVERTHELESS, IT'S QUITE AN ACHIEVEMENT. GOODBYE AND GOOD
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LUCK - YOU'LL PROBABLY NEED IT IF YOU'RE THE TYPE THAT
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PLAYS THIS GAME.
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""".trimIndent())
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}
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/**
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* Record data, allow data input, and process the simulation for the game.
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*/
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class GameState(val yearsRequired: Int = 8) {
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/**
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* The current year. Years start with zero, but we never
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* output the current year.
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*/
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var currentYear = 0
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/**
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* Number of countrymen who have died of either pollution
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* or starvation this year.
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* It costs 9 rallods to bury a body.
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* If you lose 200 people in one year, you will throw an {@see ExtremeMismanagementException}
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*/
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private var death = 0
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/**
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* Last year's tourist numbers. Use this to check whether the number
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* of tourists has gone up or down each year.
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*/
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private var tourists = 0
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private var moneySpentOnPollutionControl = 0
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private var moneySpentOnPlanting = 0
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/**
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* Current stock of rallods.
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* Player starts with between 59000 and 61000 rallods, but
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* mostly distributed close to 60000. 75% of the time it's
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* between 59500 and 60500.
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*/
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var rallods = (60000.0 + (1000.0 * rnd) - (1000.0 * rnd)).toInt()
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/**
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* Population.
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* Initial population is about to 500.
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* 75% of the time it's between 495 and 505.
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*/
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private var countrymen = (500 + (10 * rnd) - (10 * rnd)).toInt()
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/**
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* Land sale price is evenly between 95 and 104 rallods per
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* square mile.
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* Price doesn't change over the course of the game.
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*/
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private var landPrice = (10 * rnd + 95).toInt()
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private var plantingArea = 0
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private var welfareThisYear = 0
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/**
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* Land area in square miles. Arable land is 1000 square miles less.
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* Almost all calculations use landArea-1000 because only arable
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* land is of any use.
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*/
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var landArea = 2000
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/**
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* Number of foreigners brought in by companies to whom you
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* have sold land. If this gets higher than your population, there will
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* be a revolution.
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*/
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var foreignWorkers = 0
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/**
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* Planting cost is recalculated every year.
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*/
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private var costToPlant: Int = 1
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/**
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* There is a brief explanation of land selling only
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* on the first turn.
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*/
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private var explanationOfSellingGiven = false
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private var sellThisYear: Int = 0
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/**
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* Planting cost is recalculated every year
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* at between 10 and 14 rallods.
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*/
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fun recalculateLandCost() {
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costToPlant = ((rnd / 2.0) * 10.0 + 10.0).toInt()
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}
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/**
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* Show the current status of the world.
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*/
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fun displayStatus() {
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println()
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println("YOU NOW HAVE $rallods RALLODS IN THE TREASURY.")
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print("$countrymen COUNTRYMEN, ")
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if (foreignWorkers != 0) {
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println("$foreignWorkers FOREIGN WORKERS, ")
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}
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println("AND $landArea SQ. MILES OF LAND.")
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println("THIS YEAR INDUSTRY WILL BUY LAND FOR $landPrice")
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println("RALLODS PER SQUARE MILE.")
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println("LAND CURRENTLY COSTS $costToPlant RALLODS PER SQUARE MILE TO PLANT.")
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}
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fun displayExitMessage() {
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println()
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println("GOODBYE.")
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println("(IF YOU WISH TO CONTINUE THIS GAME AT A LATER DATE, ANSWER")
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println("'AGAIN' WHEN ASKED IF YOU WANT INSTRUCTIONS AT THE START")
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println("OF THE GAME).")
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}
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fun performLandSale() {
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landArea -= sellThisYear
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rallods += sellThisYear * landPrice
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}
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fun performPlanting() {
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rallods -= moneySpentOnPlanting
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}
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fun performWelfare() {
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rallods -= welfareThisYear
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}
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/**
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* Ask how much land we want to sell. Immediately get the money.
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* The player has to do the calculations to work out how much
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* money that makes.
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*/
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fun inputLandSale() {
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do {
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print("HOW MANY SQUARE MILES DO YOU WISH TO SELL TO INDUSTRY? ")
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sellThisYear = numberInput()
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if (sellThisYear > landArea - 1000) {
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println("*** THINK AGAIN. YOU ONLY HAVE ${landArea - 1000} SQUARE MILES OF FARM LAND.")
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if (!explanationOfSellingGiven) {
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println()
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println("(FOREIGN INDUSTRY WILL ONLY BUY FARM LAND BECAUSE")
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println("FOREST LAND IS UNECONOMICAL TO STRIP MINE DUE TO TREES,")
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println("THICKER TOP SOIL, ETC.)")
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explanationOfSellingGiven = true
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}
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}
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} while (sellThisYear <= 0 || sellThisYear > landArea - 1000)
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}
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/**
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* Input the value of `welfareThisYear`
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*/
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fun inputWelfare() {
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do {
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var retry = false
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print("HOW MANY RALLODS WILL YOU DISTRIBUTE AMONG YOUR COUNTRYMEN? ")
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welfareThisYear = numberInput()
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if (welfareThisYear > rallods) {
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println(" THINK AGAIN. YOU'VE ONLY $rallods RALLODS IN THE TREASURY")
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retry = true
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}
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if (welfareThisYear <= 0) {
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retry = true
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}
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} while (retry)
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}
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/**
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* Get the number of square miles to plant this year.
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* Validate the response:
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* Each countryman can only plant 2 square miles.
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* You can only plant on arable land.
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* You may not spend more on planting than your treasury.
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*/
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fun inputPlantingArea() {
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if (welfareThisYear == rallods) {
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plantingArea = 0
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} else {
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do {
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var retry = false
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print("HOW MANY SQUARE MILES DO YOU WISH TO PLANT? ")
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plantingArea = numberInput()
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val moneySpentOnPlanting = plantingArea * costToPlant
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if (plantingArea < 0) {
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retry = true
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} else if (plantingArea >= 0 && plantingArea > countrymen * 2) {
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println(" SORRY, BUT EACH COUNTRYMAN CAN ONLY PLANT 2 SQ. MILES.")
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retry = true
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} else if (plantingArea > landArea - 1000) {
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println(" SORRY, BUT YOU'VE ONLY ${landArea - 1000} SQ. MILES OF FARM LAND.")
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retry = true
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} else if (moneySpentOnPlanting > rallods) {
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println(" THINK AGAIN. YOU'VE ONLY $rallods RALLODS LEFT IN THE TREASURY.")
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retry = true
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}
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} while (retry)
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}
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}
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/**
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* Enter amount for pollution control.
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* Validate that this does not exceed treasury.
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*/
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fun inputPollutionControl() {
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do {
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var retry = false
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print("HOW MANY RALLODS DO YOU WISH TO SPEND ON POLLUTION CONTROL? ")
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moneySpentOnPollutionControl = numberInput()
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if (rallods < 0) {
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retry = true
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} else if (moneySpentOnPollutionControl > rallods) {
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println(" THINK AGAIN. YOU ONLY HAVE $rallods RALLODS REMAINING.")
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retry = true
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}
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} while (retry)
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}
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||||
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/**
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* @return true if all data entered so far has been zero.
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*/
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fun zeroInput() = sellThisYear == 0 &&
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welfareThisYear == 0 &&
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plantingArea == 0 &&
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moneySpentOnPollutionControl == 0
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||||
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fun simulateOneYear() {
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rallods -= moneySpentOnPollutionControl
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val rallodsAfterPollutionControl = rallods
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var starvationDeaths = 0
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if (welfareThisYear / 100.0 - countrymen < 0) {
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/*
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Wait, WHAT?
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If you spend less than 5000 rallods on welfare, no matter the current size of the
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population, then you will end the game, with the game claiming that too many
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people have died, without showing exactly how many have died?
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||||
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https://github.com/coding-horror/basic-computer-games/blob/main/53_King/king.bas#:~:text=1105%20IF%20I/100%3C50%20THEN%201700
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||||
*/
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if (welfareThisYear / 100.0 < 50)
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throw GameEndingException.TooManyPeopleDead()
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||||
starvationDeaths = (countrymen - (welfareThisYear / 100.0)).toInt()
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println("$starvationDeaths COUNTRYMEN DIED OF STARVATION")
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}
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||||
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var pollutionDeaths = (rnd * (2000 - landArea)).toInt()
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if (moneySpentOnPollutionControl >= 25) {
|
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pollutionDeaths = (pollutionDeaths / (moneySpentOnPollutionControl / 25.0)).toInt()
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}
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||||
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||||
if (pollutionDeaths > 0) {
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println("$pollutionDeaths COUNTRYMEN DIED OF CARBON-MONOXIDE AND DUST INHALATION")
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}
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death = pollutionDeaths + starvationDeaths
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if (death > 0) {
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||||
println(" YOU WERE FORCED TO SPEND ${death * 9}")
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println("RALLODS ON FUNERAL EXPENSES")
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||||
rallods -= death * 9
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||||
}
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||||
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||||
if (rallods < 0) {
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||||
println(" INSUFFICIENT RESERVES TO COVER COST - LAND WAS SOLD")
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||||
landArea += rallods / landPrice
|
||||
rallods = 1
|
||||
}
|
||||
|
||||
countrymen -= death
|
||||
|
||||
val newForeigners =
|
||||
if (sellThisYear > 0) {
|
||||
(sellThisYear + rnd * 10.0 + rnd * 20.0).toInt() + (if (foreignWorkers <= 0) 20 else 0)
|
||||
} else 0
|
||||
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||||
val immigration = (
|
||||
(welfareThisYear / 100.0 - countrymen) / 10.0 +
|
||||
moneySpentOnPollutionControl / 25.0 -
|
||||
(2000 - landArea) / 50.0 -
|
||||
pollutionDeaths / 2.0
|
||||
).toInt()
|
||||
println(
|
||||
"$newForeigners WORKERS CAME TO THE COUNTRY AND" +
|
||||
" ${abs(immigration)} COUNTRYMEN ${if (immigration < 0) "LEFT" else "CAME TO"}" +
|
||||
" THE ISLAND."
|
||||
)
|
||||
|
||||
countrymen += immigration
|
||||
foreignWorkers += newForeigners
|
||||
|
||||
var cropLoss = ((2000 - landArea) * (rnd + 1.5) / 2.0).toInt()
|
||||
val cropLossWorse = false
|
||||
if (foreignWorkers > 0)
|
||||
print("OF $plantingArea SQ. MILES PLANTED,")
|
||||
if (plantingArea <= cropLoss)
|
||||
cropLoss = plantingArea
|
||||
println(" YOU HARVESTED ${plantingArea - cropLoss} SQ. MILES OF CROPS.")
|
||||
|
||||
if (cropLoss > 0) {
|
||||
println(" (DUE TO ${if (cropLossWorse) "INCREASED " else ""}AIR AND WATER POLLUTION FROM FOREIGN INDUSTRY)")
|
||||
}
|
||||
|
||||
val agriculturalIncome = ((plantingArea - cropLoss) * landPrice / 2.0).toInt()
|
||||
println("MAKING $agriculturalIncome RALLODS.")
|
||||
rallods += agriculturalIncome
|
||||
|
||||
val v1 = (((countrymen - immigration) * 22.0) + rnd * 500).toInt()
|
||||
val v2 = ((2000.0 - landArea) * 15.0).toInt()
|
||||
println(" YOU MADE ${abs(v1 - v2)} RALLODS FROM TOURIST TRADE.")
|
||||
if (v2 != 0 && v1 - v2 < tourists) {
|
||||
print(" DECREASE BECAUSE ")
|
||||
println(
|
||||
when ((10 * rnd).toInt()) {
|
||||
in 0..2 -> "FISH POPULATION HAS DWINDLED DUE TO WATER POLLUTION."
|
||||
in 3..4 -> "AIR POLLUTION IS KILLING GAME BIRD POPULATION."
|
||||
in 5..6 -> "MINERAL BATHS ARE BEING RUINED BY WATER POLLUTION."
|
||||
in 7..8 -> "UNPLEASANT SMOG IS DISCOURAGING SUN BATHERS."
|
||||
else -> "HOTELS ARE LOOKING SHABBY DUE TO SMOG GRIT."
|
||||
}
|
||||
)
|
||||
}
|
||||
|
||||
/*
|
||||
The original code was incorrect.
|
||||
If v3 starts at 0, for example, our money doubles, when we
|
||||
have already been told that "YOU MADE ${abs(v1 - v2)} RALLODS
|
||||
FROM TOURIST TRADE"
|
||||
|
||||
See the original code
|
||||
1450 V3=INT(A+V3)
|
||||
1451 A=INT(A+V3)
|
||||
|
||||
https://github.com/coding-horror/basic-computer-games/blob/main/53_King/king.bas#:~:text=1450%20V3%3DINT,INT(A%2BV3)
|
||||
*/
|
||||
if (INCLUDE_BUGS_FROM_ORIGINAL) {
|
||||
tourists += rallods
|
||||
} else {
|
||||
tourists = abs(v1 - v2)
|
||||
}
|
||||
rallods += tourists
|
||||
|
||||
if (death > 200)
|
||||
throw GameEndingException.ExtremeMismanagement(death)
|
||||
if (countrymen < 343)
|
||||
throw GameEndingException.TooManyPeopleDead()
|
||||
if (rallodsAfterPollutionControl / 100 > 5 && death - pollutionDeaths >= 2)
|
||||
throw GameEndingException.StarvationWithFullTreasury()
|
||||
if (foreignWorkers > countrymen)
|
||||
throw GameEndingException.AntiImmigrationRevolution()
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
private fun numberInput() = try {
|
||||
readLine()?.toInt() ?: throw EndOfInputException()
|
||||
} catch (r: NumberFormatException) {
|
||||
0
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user