無限ループ？になってしまいプログラムを実行できません。理由を教えていただけませんか？

前提・実現したいこと

javaとjavafxを用いて、ドラクエのようなRPGを作っています。戦闘画面でお互いの攻撃ターンが進んでいくのをwhile文の繰り返しで表現しようとしたのですが、実行がうまくいきませんでした。

Mainクラスの真ん中あたりのwhile文のとこだけを消すと実行できるので、もしかしたら無限ループになってるのかなとも思ったのですが、そうだとしてもループになってしまう理由も分かりませんでした。

実行がうまくいかない理由を教えていただけませんでしょうか。よろしくお願いします。

発生している問題・エラーメッセージ

ウインドウだけは表示されるのですが、中身は何もなくエラーメッセージすら表示されず、ウインドウを閉じようとすると「OpenJDK Platform binaryは応答していません」と表示され強制終了するしかなくなります。

該当のソースコード

Java
1package application;
2
3import javafx.application.Application;
4import javafx.fxml.FXMLLoader;
5import javafx.scene.Scene;
6import javafx.scene.input.KeyEvent;
7import javafx.scene.layout.Pane;
8import javafx.scene.layout.VBox;
9import javafx.stage.Stage;
10
11public class Main extends Application {
12	public static void main(String[] args) {
13		launch(args);
14	}
15
16	private Scene sc1, sc2, sc3;
17	BattleScreenController bsc = new BattleScreenController();// = new BattleScreenController();
18	ClearScreenController csc = new ClearScreenController();
19	Hero hero = new Hero();
20	Enemy enemy = new Enemy();
21	boolean fin = false;
22
23	@Override
24	public void start(Stage primaryStage) {
25
26		try {
27			VBox root1 = (VBox) FXMLLoader.load(getClass().getResource("Sample.fxml"));
28			sc1 = new Scene(root1);
29
30//            Pane root2 = (Pane)FXMLLoader.load(getClass().getResource("BattleScreen.fxml"));
31			FXMLLoader fxmlLoader1 = new FXMLLoader(getClass().getResource("BattleScreen.fxml"));
32			Pane root2 = (Pane) fxmlLoader1.load();
33			sc2 = new Scene(root2);
34			bsc = (BattleScreenController) fxmlLoader1.getController();
35
36			FXMLLoader fxmlLoader2 = new FXMLLoader(getClass().getResource("ClearScreen.fxml"));
37			VBox root3 = (VBox) fxmlLoader2.load();
38			sc3 = new Scene(root3);
39			csc = (ClearScreenController) fxmlLoader2.getController();
40
41			primaryStage.setScene(sc1);
42			primaryStage.show();
43			sc1.setOnKeyPressed(e -> primaryStage.setScene(sc2));
44			bsc.textSet1();
45
46			while (!fin) {
47				sc2.setOnKeyPressed(e -> keyPressed1(e));
48				if (enemy.getHp() <= 0 || hero.getHp() <= 0) {
49					fin = true;
50				}
51
52			}
53
54			if (enemy.getHp() <= 0) {
55				primaryStage.setScene(sc3);
56				csc.textSet1();
57			} else if (hero.getHp() <= 0) {
58				primaryStage.setScene(sc3);
59				csc.textSet2();
60			}
61
62		} catch (Exception exception) {
63			exception.printStackTrace();
64		}
65	}
66
67	private void keyPressed1(KeyEvent e) {
68		switch (e.getCode()) {
69		case ENTER:
70			bsc.turn();
71			break;
72		case BACK_SPACE:
73			bsc.textSet2();
74			break;
75		default:
76			bsc.textSet0();
77			break;
78		}
79	}
80}

Java
1package application;
2
3import java.net.URL;
4import java.util.InputMismatchException;
5import java.util.ResourceBundle;
6
7import javax.management.StringValueExp;
8
9import javafx.fxml.FXML;
10import javafx.scene.control.Label;
11import javafx.scene.layout.VBox;
12
13public class BattleScreenController {
14	Hero hero = new Hero();
15	Enemy enemy = new Enemy();
16	@FXML
17	private ResourceBundle resources;
18
19	@FXML
20	private URL location;
21
22	@FXML
23	private VBox textA;
24
25	@FXML
26	private Label sentence3;
27
28	@FXML
29	private Label sentence4;
30
31	@FXML
32	private Label name;
33
34	@FXML
35	private Label hp;
36
37	@FXML
38	private Label sentence1;
39
40	@FXML
41	private Label sentence2;
42
43	@FXML
44	private Label enemyHp;
45
46	@FXML
47	private Label sentence5;
48
49	public void error(InputMismatchException e) {
50		sentence1.setText("型が違います：" + e);
51	}
52
53	public void textReset() {
54		sentence1.setText(" ");
55		sentence2.setText(" ");
56		sentence3.setText(" ");
57		sentence4.setText(" ");
58	}
59
60	public void textSet0() {
61		sentence1.setText("EnterかBackSpaceを押してください");
62		sentence2.setText(" ");
63		sentence3.setText(" ");
64		sentence4.setText(" ");
65	}
66
67	public void textSet1() {
68		name.setText(hero.getName());
69		hp.setText(" " + String.valueOf(hero.getHp()) + "/500");
70	}
71
72	public void turn() {
73		enemy.damageC(hero.getAttack(), enemy.getDefence());
74		sentence1.setText(String.valueOf(hero.getName()) + "の攻撃!!" + String.valueOf(hero.getName()) + "はマスターソードを天にかざした");
75		sentence2.setText(String.valueOf(enemy.getName()) + "に" + String.valueOf(enemy.getRcvDamage()) + "ダメージ!!");
76		hero.damageC(enemy.getAttack(), hero.getDefence());
77		sentence3.setText(String.valueOf(enemy.getName()) + "の攻撃!!" + String.valueOf(enemy.getName()) + "は燃えさかる火炎をはいた");
78		sentence4.setText(String.valueOf(hero.getName()) + "に" + String.valueOf(hero.getRcvDamage()) + "ダメージ!!");
79		hp.setText(String.valueOf(hero.getHp()) + "/500");
80		sentence5.setText("EnterかBackSpaceを押してください");
81	}
82
83	public void textSet2() {
84		sentence1.setText(String.valueOf(hero.getName()) + "は逃げ出した");
85		sentence2.setText("しかしまわりこまれてしまった!!");
86		sentence3.setText(String.valueOf(hero.getName()) + "は" + String.valueOf(enemy.getName()) + "のかぎづめで背中を一突きされた");
87		hero.setHp(0);
88		hp.setText(String.valueOf(hero.getHp()) + "/500");
89		sentence4.setText("GAME OVER!!");
90	}
91
92	@FXML
93	void initialize() {
94		assert sentence3 != null : "fx:id=\"sentence3\" was not injected: check your FXML file 'BattleScreen.fxml'.";
95		assert sentence4 != null : "fx:id=\"sentence4\" was not injected: check your FXML file 'BattleScreen.fxml'.";
96		assert name != null : "fx:id=\"name\" was not injected: check your FXML file 'BattleScreen.fxml'.";
97		assert hp != null : "fx:id=\"hp\" was not injected: check your FXML file 'BattleScreen.fxml'.";
98		assert sentence1 != null : "fx:id=\"sentence1\" was not injected: check your FXML file 'BattleScreen.fxml'.";
99		assert sentence2 != null : "fx:id=\"sentence2\" was not injected: check your FXML file 'BattleScreen.fxml'.";
100	}
101}
102

Java
1package application;
2
3public class Hero {
4	private String name = "ゆうしゃ";
5	private int hp = 500;
6	private int attack = 100;
7	private int defence = 50;
8
9	private int rcvDamage;
10
11	public void damageC(int attack, int defence) {
12		if (attack - defence > 0) {
13			rcvDamage = attack - defence;
14		} else if (attack - defence <= 0) {
15			rcvDamage = 1;
16		}
17		this.hp -= rcvDamage;
18	}
19
20	public String getName() {
21		return this.name;
22	}
23
24	public int getHp() {
25		return this.hp;
26	}
27
28	public void setHp(int hp) {
29		this.hp = hp;
30	}
31
32	public int getAttack() {
33		return this.attack;
34	}
35
36	public int getDefence() {
37		return this.defence;
38	}
39
40	public int getRcvDamage() {
41		return this.rcvDamage;
42	}
43
44}
45

Java
1package application;
2
3public class Enemy extends Object {
4	private String name = "魔王";
5	private int hp = 300;
6	private int attack = 100;
7	private int defence = 50;
8
9	private int rcvDamage;
10
11	public void damageC(int attack, int defence) {
12		if (attack - defence > 0) {
13			rcvDamage = attack - defence;
14		} else if (attack - defence <= 0) {
15			rcvDamage = 1;
16		}
17		this.hp -= rcvDamage;
18	}
19
20	public String getName() {
21		return this.name;
22	}
23
24	public int getHp() {
25		return this.hp;
26	}
27
28	public void setHp(int hp) {
29		this.hp = hp;
30	}
31
32	public int getAttack() {
33		return this.attack;
34	}
35
36	public int getDefence() {
37		return this.defence;
38	}
39
40	public int getRcvDamage() {
41		return this.rcvDamage;
42	}
43
44}
45
46