CODEWITHSUNDEEP
scalaimportiojava.util.scanner
Chris
Chris

Reputation: 233

How do I write variables to a file in scala and then load them back into scala?

I have a bunch of variables in scala:

triangleCount = 2
lives = 5
triangleScore = 1
curPlayer.getX
curPlayer.getY

When I press "s" in my match case:

case "s" =>

I want the variables to be written to an external file.

Then when I press "l" in my match case:

case "l" =>

I want the variables to be loaded back into my program and replace the default ones.

How would I go about doing this? I know it has something to do with scala.io.Source or java Scanner but i'm not sure how to do it.

Thanks

Upvotes: 0

Views: 1118

Answers (1)

Chris
Chris

Reputation: 51

case "s" => 
  val pw = new java.io.PrintWriter("myVars")
  pw.println(List(triangleCount, lives, triangleScore, curPlayer.getX, curPlayer.getY).mkString("\t"))
  pw.close

case "l" =>
  val myVarsFromFile = io.Source.fromFile("myVars").getLines.toList
  if (!myVarsFromFile.isEmpty) {
    val toks = myVarsFromFile.head.split("\t")
    var (triangleCount,lives, triangleScore) = (toks(0).toInt, toks(1).toInt, toks(2).toInt)
    curPlayer.setX(toks(3).toDouble)
    curPlayer.setY(toks(4).toDouble)
  }

Upvotes: 1

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