var catScore = 0;
var duckScore = 0;
var catMove;
var duckMove;

  onEvent("play", "click", function() {
 setScreen("playScreen");
});

onEvent("homebtn", "click", function(){
  setScreen("Home");

});
onEvent("playRoundbtn", "click", function() {
  catMove = randomNumber(1, 3);
  duckMove = randomNumber(1, 3);

  if (catMove == duckMove) {
    setText("action", "it is a tie");
  } else if (catMove == 1 && duckMove == 2){
      setText("action", "cat used rock, duck used paper, duck wins" );
      duckScore = duckScore + 1;
      setText("duck_score", duckScore);
      checkWinner();


  } else if (catMove == 1 && duckMove == 3){
      setText("action", "cat used rock, duck used scissors, cat wins" );
      catScore = catScore + 1;
      setText("cat_score", catScore);
      checkWinner();

  } else if (catMove == 2 && duckMove == 1){
      setText("action", "cat used paper, duck used rock, cat wins" );
      catScore = catScore + 1;
      setText("cat_score", catScore);
      checkWinner();

  } else if (catMove == 2 && duckMove == 3){
      setText("action", "cat used paper, duck used scissors, duck wins" );
      duckScore = duckScore + 1;
      setText("duck_score", duckScore);
      checkWinner();

  } else if (catMove == 3 && duckMove == 1){
      setText("action", "cat used scissors, duck used rock, duck wins" );
      duckScore = duckScore + 1;
      setText("duck_score", duckScore);
      checkWinner();

  } else if (catMove == 3 && duckMove == 2){
    setText("action", "cat used scissors, duck used paper, cat wins" );
    catScore = catScore + 1;
    setText("cat_score", catScore);
    checkWinner();
  }
});

  function checkWinner(){
    if (catScore == 3){
      setText("action", "Cat Wins!");
    } else if (duckScore == 3){
      setText("action", "Duck Wins!");
    }
  }

  function reset(){
    // reset variables and labels to 0.
  }