West london hack night november 2014

Tetris.scala

package tetris

/**
 * Created by mat on 12/11/2014.
 */

  abstract class shape {
    var orientation: Int = 0
    val orientations: Array[Array[Point]]
    def rotate(direction: Int): Array[Point] = {
      orientation = orientation + direction
      if (orientation < 0) orientation = orientation + 4
      else if (orientation > 3) orientation = orientation - 4
      orientations(orientation)
    }
  }

  case class Point(val x: Int, val y: Int)

  class shape_i extends shape {
    override val orientations = Seq(
      Seq(Point(0, 0), Point(0, 1), Point(0, 2), Point(0, 3)).toArray[Point],
      Seq(Point(0, 0), Point(1, 0), Point(2, 0), Point(3, 0)).toArray[Point],
      Seq(Point(0, 0), Point(0, 1), Point(0, 2), Point(0, 3)).toArray[Point],
      Seq(Point(0, 0), Point(1, 0), Point(2, 0), Point(3, 0)).toArray[Point]
    ).toArray
  }

object Tetris extends App {
    val shapeGrid = for (y <- 0 to 3; x <- 0 to 3) yield (x, y)
    def renderShape(shapePoints: Seq[Point]) = {
      val pointSet = shapePoints.toSet
      shapeGrid map( point => if(pointSet.contains(Point(point._1, point._2))) "X" else " ")
    }
  val my_i_render = renderShape((new shape_i).rotate(0))
  val lines = my_i_render.grouped(4)
  lines.foreach (line => {
    line.foreach(print(_))
    println()
  })
}