82 lines
2.5 KiB
Scala
82 lines
2.5 KiB
Scala
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package day11
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import day11.direction._
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import intcode.{Finished, Input, Machine, Ready}
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import scala.collection.mutable
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class Robot(software: Array[Long], init: Int = 0) {
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private[this] val brain: Machine = new Machine(software)
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private[this] val map: mutable.HashMap[Point, Int] = new mutable.HashMap()
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private[this] var location: Point = Point(0, 0)
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private[this] var direction: Direction = Up
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if (init != 0) map.addOne(Point(0,0), init) // when starting on white
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private[this] var paintedPanelsCount: Int = 0
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def paintedPanels: Int = paintedPanelsCount
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def updateColor(point: Point, color: Int): Unit = {
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if (map.contains(point)) {
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map(point) = color
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}
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else {
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paintedPanelsCount += 1
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map.addOne(point, color)
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}
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}
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def findColor(point: Point): Int = if (map.contains(point)) map(point) else 0
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def nextLocation(location: Point, direction: Direction, output: Int): (Point, Direction) = {
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(direction, output) match {
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case (Up, 0) => (location.left, Left)
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case (Up, 1) => (location.right, Right)
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case (Down, 0) => (location.right, Right)
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case (Down, 1) => (location.left, Left)
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case (Left, 0) => (location.down, Down)
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case (Left, 1) => (location.up, Up)
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case (Right, 0) => (location.up, Up)
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case (Right, 1) => (location.down, Down)
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case _ => throw new Exception("Something went wrong")
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}
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}
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// This print function uses a naive approach of having stuff hardcoded for my output, so might require calibration
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def printMap(): Unit = {
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val matrix = Array.ofDim[Char](6, 46)
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map.foreach(tuple => {
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matrix(tuple._1.y+5)(tuple._1.x) = if (tuple._2 == 0) '.' else '#'
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})
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for (i <- matrix.indices.reverse; j <- matrix(0).indices) {
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print(matrix(i)(j))
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if (j == 0) println()
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}
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println()
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}
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@scala.annotation.tailrec
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final def run(): Unit = {
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brain.getState match {
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// Ready to run
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case Ready =>
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brain.run()
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this.run()
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// Finished the program
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case Finished => ()
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// Program requires input of some sorts
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case Input =>
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brain.enqueue(findColor(location))
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brain.run()
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updateColor(location, brain.output.toInt) // 1st output -> color
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val (p, d) = nextLocation(location, direction, brain.output.toInt) // 2nd output -> direction
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location = p
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direction = d
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this.run()
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}
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}
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}
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