JavaFX and Scene Builder - Hangman tutorial - Controller

Controller.java

package sample;

import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.text.Text;

import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.ResourceBundle;

public class Controller implements Initializable {

    @FXML
    private Text hangmanTextArea;

    @FXML
    private TextField guess;

    @FXML
    private Text textForWord;

    @FXML
    private Text endOfGameText;

    private String word;

    private StringBuilder secretWord = new StringBuilder();

    private int livesPos = 0;

    ArrayList<String> hangManLives = new ArrayList<>(Arrays.asList(
            """
            +---+
            |   |
                |
                |
                |
                |
          =========""",
            """
            +---+
            |   |
            O   |
                |
                |
                |
          =========""",
            """
            +---+
            |   |
            O   |
            |   |
                |
                |
          =========""",
            """
            +---+
            |   |
            O   |
           /|   |
                |
                |
          =========""",
            """
            +---+
            |   |
            O   |
           /|\\  |
                |
                |
          =========""",
            """
            +---+
            |   |
            O   |
           /|\\  |
           /    |
                |
          =========""",
            """
            +---+
            |   |
            O   |
           /|\\  |
           / \\  |
                |
          ========="""
    ));

    @Override
    public void initialize(URL url, ResourceBundle resourceBundle) {
        hangmanTextArea.setText(hangManLives.get(livesPos));
    }

    @FXML
    void getTextInput(ActionEvent event) {
        if(word == null){
            word = guess.getText();
            setupWord();
            guess.clear();
        } else{
            playTurn();
        }
    }

    public void setupWord(){
        int wordLength = word.length();
        secretWord.append("*".repeat(wordLength));
        textForWord.setText(String.valueOf(secretWord));
    }

    public void playTurn(){
        String guess = this.guess.getText();
        ArrayList<Integer> positions = new ArrayList<>();
        char[] wordChars = word.toCharArray();
        char letterGuess = guess.charAt(0);

        if(word.equals(guess)){
            endOfGameText.setText("You won!!");
            return;
        }

        if(word.contains(guess)){
            for (int i = 0; i < word.length(); i++) {
                if(wordChars[i] == letterGuess){
                    positions.add(i);
                }
            }
            positions.forEach(pos ->{
                secretWord.setCharAt(pos,letterGuess);
            });

            textForWord.setText(String.valueOf(secretWord));
        } else {
            hangmanTextArea.setText(hangManLives.get(++livesPos));
            if(livesPos == 6){
                endOfGameText.setText("You LOST!!");
            }
        }
    }

    @FXML
    void reset(ActionEvent event) {
        word = null;
        secretWord.setLength(0);
        livesPos = 0;
        hangmanTextArea.setText(hangManLives.get(0));
        endOfGameText.setText("");
    }
}

Main.java

package sample;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception{
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        primaryStage.setTitle("Hello World");
        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }


    public static void main(String[] args) {
        launch(args);
    }
}

sample.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>
<?import javafx.scene.text.Text?>

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/15.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
   <children>
      <TextField fx:id="guess" layoutX="333.0" layoutY="76.0" />
      <Text layoutX="333.0" layoutY="61.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Text Input" />
      <Button layoutX="333.0" layoutY="114.0" mnemonicParsing="false" onAction="#getTextInput" text="Enter" />
      <Text fx:id="textForWord" layoutX="319.0" layoutY="200.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Input a word" wrappingWidth="149.0">
         <font>
            <Font size="40.0" />
         </font>
      </Text>
      <Text fx:id="hangmanTextArea" layoutX="49.0" layoutY="70.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Text">
         <font>
            <Font name="Monospaced Regular" size="32.0" />
         </font>
      </Text>
      <Text fx:id="endOfGameText" layoutX="264.0" layoutY="345.0" strokeType="OUTSIDE" strokeWidth="0.0">
         <font>
            <Font size="39.0" />
         </font>
      </Text>
      <Button layoutX="523.0" layoutY="355.0" mnemonicParsing="false" onAction="#reset" text="Reset" />
   </children>
</AnchorPane>