Chutes and Ladders in Go

ladders.go

package main

import (
  "fmt"
  "math/rand"
  "os"
  "text/tabwriter"
  "time"
)

var winner int
var move int

func main() {
  move = 0

  r := rand.New(rand.NewSource(time.Now().UnixNano()))

  w := tabwriter.NewWriter(os.Stdout, 1, 1, 1, ' ', 0)
  defer w.Flush()
  show := func(name string, v interface{}) {
    fmt.Fprintf(w, "%s\t%v\n", name, v)
  }

  board := make([]int, 100)
  for i := 0; i < 100; i++ {
    if 0 == r.Intn(2) {
      board[i] = r.Intn(99 - i/2)
    }
  }
  show("Board", board)

  players := make(map[int]int)

  for i := 0; i < 5; i++ {
    players[i] = 0
  }

  winner = -1;

  for winner < 0 {
    player := move % len(players)
    show("Player move", player)
    die := r.Intn(6) + 1
    players[player] += die
    location := players[player]
    if players[player] >= 100 {
      winner = player
    } else {
      if board[location] > 0 {
        players[player] = board[location]
      }
    }
    show("Players", players)
    move += 1
  }
  show("Winner", winner)
}