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https://github.com/coding-horror/basic-computer-games.git
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Added go version of Fur Trader
This commit is contained in:
Troy Campbell
326
00_Alternate_Languages/38_Fur_Trader/go/main.go
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326
00_Alternate_Languages/38_Fur_Trader/go/main.go
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package main
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import (
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"bufio"
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"fmt"
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"log"
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"math/rand"
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"os"
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"strconv"
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"strings"
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"time"
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)
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const (
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MAXFURS = 190
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STARTFUNDS = 600
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)
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type Fur int8
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const (
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FUR_MINK Fur = iota
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FUR_BEAVER
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FUR_ERMINE
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FUR_FOX
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)
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type Fort int8
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const (
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FORT_MONTREAL Fort = iota
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FORT_QUEBEC
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FORT_NEWYORK
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)
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type GameState int8
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const (
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STARTING GameState = iota
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TRADING
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CHOOSINGFORT
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TRAVELLING
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)
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func FURS() []string {
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return []string{"MINK", "BEAVER", "ERMINE", "FOX"}
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}
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func FORTS() []string {
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return []string{"HOCHELAGA (MONTREAL)", "STADACONA (QUEBEC)", "NEW YORK"}
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}
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type Player struct {
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funds float32
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furs []int
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}
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func NewPlayer() Player {
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p := Player{}
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p.funds = STARTFUNDS
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p.furs = make([]int, 4)
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return p
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}
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func (p *Player) totalFurs() int {
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f := 0
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for _, v := range p.furs {
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f += v
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}
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return f
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}
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func (p *Player) lostFurs() {
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for f := 0; f < len(p.furs); f++ {
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p.furs[f] = 0
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}
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}
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func printTitle() {
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fmt.Println(" FUR TRADER")
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fmt.Println(" CREATIVE COMPUTING MORRISTOWN, NEW JERSEY")
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fmt.Println()
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fmt.Println()
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fmt.Println()
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}
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func printIntro() {
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fmt.Println("YOU ARE THE LEADER OF A FRENCH FUR TRADING EXPEDITION IN ")
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fmt.Println("1776 LEAVING THE LAKE ONTARIO AREA TO SELL FURS AND GET")
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fmt.Println("SUPPLIES FOR THE NEXT YEAR. YOU HAVE A CHOICE OF THREE")
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fmt.Println("FORTS AT WHICH YOU MAY TRADE. THE COST OF SUPPLIES")
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fmt.Println("AND THE AMOUNT YOU RECEIVE FOR YOUR FURS WILL DEPEND")
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fmt.Println("ON THE FORT THAT YOU CHOOSE.")
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fmt.Println()
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}
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func getFortChoice() Fort {
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scanner := bufio.NewScanner(os.Stdin)
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for {
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fmt.Println()
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fmt.Println("YOU MAY TRADE YOUR FURS AT FORT 1, FORT 2,")
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fmt.Println("OR FORT 3. FORT 1 IS FORT HOCHELAGA (MONTREAL)")
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fmt.Println("AND IS UNDER THE PROTECTION OF THE FRENCH ARMY.")
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fmt.Println("FORT 2 IS FORT STADACONA (QUEBEC) AND IS UNDER THE")
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fmt.Println("PROTECTION OF THE FRENCH ARMY. HOWEVER, YOU MUST")
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fmt.Println("MAKE A PORTAGE AND CROSS THE LACHINE RAPIDS.")
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fmt.Println("FORT 3 IS FORT NEW YORK AND IS UNDER DUTCH CONTROL.")
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fmt.Println("YOU MUST CROSS THROUGH IROQUOIS LAND.")
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fmt.Println("ANSWER 1, 2, OR 3.")
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fmt.Print(">> ")
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scanner.Scan()
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f, err := strconv.Atoi(scanner.Text())
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if err != nil || f < 1 || f > 3 {
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fmt.Println("Invalid input, Try again ... ")
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continue
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}
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return Fort(f)
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}
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}
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func printFortComment(f Fort) {
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fmt.Println()
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switch f {
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case FORT_MONTREAL:
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fmt.Println("YOU HAVE CHOSEN THE EASIEST ROUTE. HOWEVER, THE FORT")
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fmt.Println("IS FAR FROM ANY SEAPORT. THE VALUE")
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fmt.Println("YOU RECEIVE FOR YOUR FURS WILL BE LOW AND THE COST")
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fmt.Println("OF SUPPLIES HIGHER THAN AT FORTS STADACONA OR NEW YORK.")
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case FORT_QUEBEC:
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fmt.Println("YOU HAVE CHOSEN A HARD ROUTE. IT IS, IN COMPARSION,")
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fmt.Println("HARDER THAN THE ROUTE TO HOCHELAGA BUT EASIER THAN")
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fmt.Println("THE ROUTE TO NEW YORK. YOU WILL RECEIVE AN AVERAGE VALUE")
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fmt.Println("FOR YOUR FURS AND THE COST OF YOUR SUPPLIES WILL BE AVERAGE.")
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case FORT_NEWYORK:
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fmt.Println("YOU HAVE CHOSEN THE MOST DIFFICULT ROUTE. AT")
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fmt.Println("FORT NEW YORK YOU WILL RECEIVE THE HIGHEST VALUE")
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fmt.Println("FOR YOUR FURS. THE COST OF YOUR SUPPLIES")
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fmt.Println("WILL BE LOWER THAN AT ALL THE OTHER FORTS.")
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}
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fmt.Println()
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}
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func getYesOrNo() string {
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scanner := bufio.NewScanner(os.Stdin)
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for {
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fmt.Println("ANSWER YES OR NO")
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scanner.Scan()
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if strings.ToUpper(scanner.Text())[0:1] == "Y" {
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return "Y"
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} else if strings.ToUpper(scanner.Text())[0:1] == "N" {
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return "N"
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}
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}
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}
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func getFursPurchase() []int {
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scanner := bufio.NewScanner(os.Stdin)
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fmt.Printf("YOUR %d FURS ARE DISTRIBUTED AMONG THE FOLLOWING\n", MAXFURS)
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fmt.Println("KINDS OF PELTS: MINK, BEAVER, ERMINE AND FOX.")
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fmt.Println()
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purchases := make([]int, 4)
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for i, f := range FURS() {
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retry:
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fmt.Printf("HOW MANY %s DO YOU HAVE: ", f)
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scanner.Scan()
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count, err := strconv.Atoi(scanner.Text())
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if err != nil {
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fmt.Println("INVALID INPUT, TRY AGAIN ...")
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goto retry
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}
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purchases[i] = count
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}
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return purchases
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}
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func main() {
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rand.Seed(time.Now().UnixNano())
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printTitle()
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gameState := STARTING
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whichFort := FORT_NEWYORK
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var (
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minkPrice int
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erminePrice int
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beaverPrice int
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foxPrice int
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)
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player := NewPlayer()
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for {
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switch gameState {
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case STARTING:
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printIntro()
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fmt.Println("DO YOU WISH TO TRADE FURS?")
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if getYesOrNo() == "N" {
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os.Exit(0)
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}
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gameState = TRADING
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case TRADING:
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fmt.Println()
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fmt.Printf("YOU HAVE $ %1.2f IN SAVINGS\n", player.funds)
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fmt.Printf("AND %d FURS TO BEGIN THE EXPEDITION\n", MAXFURS)
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player.furs = getFursPurchase()
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if player.totalFurs() > MAXFURS {
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fmt.Println()
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fmt.Println("YOU MAY NOT HAVE THAT MANY FURS.")
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fmt.Println("DO NOT TRY TO CHEAT. I CAN ADD.")
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fmt.Println("YOU MUST START AGAIN.")
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gameState = STARTING
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} else {
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gameState = CHOOSINGFORT
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}
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case CHOOSINGFORT:
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whichFort = getFortChoice()
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printFortComment(whichFort)
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fmt.Println("DO YOU WANT TO TRADE AT ANOTHER FORT?")
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changeFort := getYesOrNo()
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if changeFort == "N" {
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gameState = TRAVELLING
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}
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case TRAVELLING:
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switch whichFort {
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case FORT_MONTREAL:
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minkPrice = (int((0.2*rand.Float64()+0.70)*100+0.5) / 100)
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erminePrice = (int((0.2*rand.Float64()+0.65)*100+0.5) / 100)
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beaverPrice = (int((0.2*rand.Float64()+0.75)*100+0.5) / 100)
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foxPrice = (int((0.2*rand.Float64()+0.80)*100+0.5) / 100)
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fmt.Println("SUPPLIES AT FORT HOCHELAGA COST $150.00.")
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fmt.Println("YOUR TRAVEL EXPENSES TO HOCHELAGA WERE $10.00.")
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player.funds -= 160
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case FORT_QUEBEC:
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minkPrice = (int((0.30*rand.Float64()+0.85)*100+0.5) / 100)
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erminePrice = (int((0.15*rand.Float64()+0.80)*100+0.5) / 100)
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beaverPrice = (int((0.20*rand.Float64()+0.90)*100+0.5) / 100)
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foxPrice = (int((0.25*rand.Float64()+1.10)*100+0.5) / 100)
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event := int(10*rand.Float64()) + 1
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if event <= 2 {
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fmt.Println("YOUR BEAVER WERE TOO HEAVY TO CARRY ACROSS")
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fmt.Println("THE PORTAGE. YOU HAD TO LEAVE THE PELTS, BUT FOUND")
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fmt.Println("THEM STOLEN WHEN YOU RETURNED.")
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player.furs[FUR_BEAVER] = 0
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} else if event <= 6 {
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fmt.Println("YOU ARRIVED SAFELY AT FORT STADACONA.")
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} else if event <= 8 {
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fmt.Println("YOUR CANOE UPSET IN THE LACHINE RAPIDS. YOU")
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fmt.Println("LOST ALL YOUR FURS.")
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player.lostFurs()
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} else if event <= 10 {
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fmt.Println("YOUR FOX PELTS WERE NOT CURED PROPERLY.")
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fmt.Println("NO ONE WILL BUY THEM.")
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player.furs[FUR_FOX] = 0
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} else {
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log.Fatal("Unexpected error")
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}
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fmt.Println()
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fmt.Println("SUPPLIES AT FORT STADACONA COST $125.00.")
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fmt.Println("YOUR TRAVEL EXPENSES TO STADACONA WERE $15.00.")
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player.funds -= 140
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case FORT_NEWYORK:
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minkPrice = (int((0.15*rand.Float64()+1.05)*100+0.5) / 100)
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erminePrice = (int((0.15*rand.Float64()+0.95)*100+0.5) / 100)
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beaverPrice = (int((0.25*rand.Float64()+1.00)*100+0.5) / 100)
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foxPrice = (int((0.25*rand.Float64()+1.05)*100+0.5) / 100) // not in original code
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event := int(10*rand.Float64()) + 1
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if event <= 2 {
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fmt.Println("YOU WERE ATTACKED BY A PARTY OF IROQUOIS.")
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fmt.Println("ALL PEOPLE IN YOUR TRADING GROUP WERE")
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fmt.Println("KILLED. THIS ENDS THE GAME.")
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os.Exit(0)
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} else if event <= 6 {
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fmt.Println("YOU WERE LUCKY. YOU ARRIVED SAFELY")
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fmt.Println("AT FORT NEW YORK.")
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} else if event <= 8 {
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fmt.Println("YOU NARROWLY ESCAPED AN IROQUOIS RAIDING PARTY.")
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fmt.Println("HOWEVER, YOU HAD TO LEAVE ALL YOUR FURS BEHIND.")
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player.lostFurs()
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} else if event <= 10 {
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minkPrice /= 2
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foxPrice /= 2
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fmt.Println("YOUR MINK AND BEAVER WERE DAMAGED ON YOUR TRIP.")
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fmt.Println("YOU RECEIVE ONLY HALF THE CURRENT PRICE FOR THESE FURS.")
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} else {
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log.Fatal("Unexpected error")
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}
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fmt.Println()
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fmt.Println("SUPPLIES AT NEW YORK COST $85.00.")
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fmt.Println("YOUR TRAVEL EXPENSES TO NEW YORK WERE $25.00.")
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player.funds -= 110
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}
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beaverValue := beaverPrice * player.furs[FUR_BEAVER]
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foxValue := foxPrice * player.furs[FUR_FOX]
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ermineValue := erminePrice * player.furs[FUR_ERMINE]
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minkValue := minkPrice * player.furs[FUR_MINK]
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fmt.Println()
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fmt.Printf("YOUR BEAVER SOLD FOR $%6.2f\n", float64(beaverValue))
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fmt.Printf("YOUR FOX SOLD FOR $%6.2f\n", float64(foxValue))
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fmt.Printf("YOUR ERMINE SOLD FOR $%6.2f\n", float64(ermineValue))
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fmt.Printf("YOUR MINK SOLD FOR $%6.2f\n", float64(minkValue))
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player.funds += float32(beaverValue + foxValue + ermineValue + minkValue)
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fmt.Println()
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fmt.Printf("YOU NOW HAVE $%1.2f INCLUDING YOUR PREVIOUS SAVINGS\n", player.funds)
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fmt.Println("\nDO YOU WANT TO TRADE FURS NEXT YEAR?")
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if getYesOrNo() == "N" {
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os.Exit(0)
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} else {
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gameState = TRADING
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}
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}
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}
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}
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