/
Solution.scala
154 lines (135 loc) · 3.96 KB
/
Solution.scala
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/**
* https://www.codingame.com/training/medium/bender-episode-1
* Created by kotobotov.ru on 28.03.2017.
*/
object Solution extends App {
val Array(height, c) = for (i <- readLine split " ") yield i.toInt
var commands = List.empty[String]
var data = for (i <- 0 until height) yield {
val row = readLine
row.indexOf("@") match {
case -1 =>
case item: Int => Bender.setLocation(item, i)
Bender.setNext("SOUTH")
}
row.indexOf("T") match {
case -1 =>
case item: Int => if (Bender.teleport1._1 == -1) Bender.teleport1 = (item, i)
else Bender.teleport2 = (item, i)
}
Bender.maxTurns = height * c
Console.err.println(row.toList.mkString(""))
row.replace("@", " ").split("")
}
object Bender {
var maxTurns = -1
var teleport1 = (-1, -1)
var teleport2 = (-1, -1)
var state = "SOUTH"
var changeStateCounter = 0
var reversed = false
var drunk = false
var currentX = 0
var currentY = 0
var nextX = 0
var nextY = 0
var turnsCounter = 0
def setLocation(x: Int, y: Int) = {
currentX = x
currentY = y
}
def currentLocation = (currentX, currentY)
def nextLocation = (nextX, nextY)
def reactTo(frontBloc: String) = {
frontBloc match {
case "$" => goTo(state)
state = "die"
case "#" => changeState(changeStateCounter)
setNext(state)
case "X" => drunk match {
case false => changeState(changeStateCounter)
case true => goTo(state)
}
setNext(state)
case _ => goTo(state)
setNext(state)
}
}
def changeState(currentTry: Int) = {
state = reversed match {
case true =>
currentTry match {
case 0 => "WEST"
case 1 => "NORTH"
case 2 => "EAST"
case 3 => "SOUTH"
}
case false =>
currentTry match {
case 0 => "SOUTH"
case 1 => "EAST"
case 2 => "NORTH"
case 3 => "WEST"
}
}
changeStateCounter = currentTry + 1
}
def goTo(direction: String) = {
changeStateCounter = 0
turnsCounter += 1
commands ++= List(direction)
direction match {
case "SOUTH" => currentY += 1
case "EAST" => currentX += 1
case "NORTH" => currentY -= 1
case "WEST" => currentX -= 1
}
data(Bender.currentY)(Bender.currentX) match {
case "$" => state = "die"
case "I" => reversed = !reversed
case "B" => drunk = !drunk
case "S" => state = "SOUTH"
case "E" => state = "EAST"
case "N" => state = "NORTH"
case "W" => state = "WEST"
case "T" => teleport(currentX, currentY)
case "X" => data(Bender.currentY)(Bender.currentX) = " "
case " " =>
case _ =>
}
Bender.render()
}
def teleport(x: Int, y: Int) = {
if (x == teleport1._1 && y == teleport1._2)
setLocation(teleport2._1, teleport2._2) else
setLocation(teleport1._1, teleport1._2)
}
def setNext(direction: String) = {
direction match {
case "SOUTH" => Bender.nextY = currentY + 1
Bender.nextX = currentX
case "EAST" => Bender.nextX = currentX + 1
Bender.nextY = currentY
case "NORTH" => Bender.nextY = currentY - 1
Bender.nextX = currentX
case "WEST" => Bender.nextX = currentX - 1
Bender.nextY = currentY
}
}
def render() = {
val temp = data(currentY)(currentX)
data(currentY)(currentX) = "@"
for (i <- 0 until height) {
Console.err.println(data(i).toList.mkString(""))
}
data(currentY)(currentX) = temp
}
}
while (Bender.state != "die" && Bender.turnsCounter < Bender.maxTurns) {
Bender.reactTo(data(Bender.nextY)(Bender.nextX))
}
Bender.state match {
case "die" => commands.foreach(println(_))
case _ => println("LOOP")
}
}