Only start spawning when starting gameplay

Assets/Scripts/Arena.cs

@@ -36,7 +36,9 @@ public class Arena : MonoBehaviour {
 	
 	void Awake() => safeZone = GetComponentInChildren<SafeZone>();
 
-	void Start() => StartCoroutine(SpawnEnemies());
+	void Start() => gameFlowManager.stateChanged += OnGameFlowStateChanged;
+	
+	void OnDestroy() => gameFlowManager.stateChanged -= OnGameFlowStateChanged;
 
 	void SpawnEnemy(int spawnerIndex) {
 		if (!gameFlowManager.CanDoAction)
@@ -70,6 +72,11 @@ public class Arena : MonoBehaviour {
 		return safeZone.GetMoatExtents();
 	}
 
+	void OnGameFlowStateChanged(BaseState oldState, BaseState newState) {
+		if (oldState is GameFlowManager.StartFlowState && newState is GameFlowManager.GameplayFlowState)
+			StartCoroutine(SpawnEnemies());
+	}
+
 #if UNITY_EDITOR
 	void OnDrawGizmosSelected() {
 		Gizmos.color = Color.blue;

Assets/Scripts/Entity.cs

@@ -159,7 +159,7 @@ public class Entity : MonoBehaviour {
         halo.SetActive(false);
     }
 
-    void OnGameFlowStateChanged(BaseState newState) {
+    void OnGameFlowStateChanged(BaseState oldState, BaseState newState) {
 	    if (gameFlowManager.pauseLevel >= GameFlowManager.PauseLevel.NothingMoves)
 		    rb.velocity = Vector2.zero;
     }

Assets/Scripts/GameFlowManager.cs

@@ -41,7 +41,7 @@ public class GameFlowManager : MonoBehaviour {
 	[field: SerializeField] TMP_Text startTxt = null!;
 	[field: SerializeField] TMP_Text endTxt = null!;
 
-	public event Action<BaseState>? stateChanged;
+	public event Action<BaseState, BaseState>? stateChanged;
 
 	#region Unity Messages
 
@@ -135,9 +135,10 @@ public class GameFlowManager : MonoBehaviour {
 
 	void SwitchState(BaseState newState) {
 		CurrentState.LeaveState();
+		BaseState oldState = CurrentState;
 		CurrentState = newState;
 		newState.EnterState();
-		stateChanged?.Invoke(newState);
+		stateChanged?.Invoke(oldState, newState);
 	}
 
 	public abstract class GameFlowState : BaseState {
@@ -170,7 +171,7 @@ public class GameFlowManager : MonoBehaviour {
 		}
 	}
 	
-	class StartFlowState : GameFlowState {
+	public class StartFlowState : GameFlowState {
 		public StartFlowState(GameFlowManager gameFlowManager) : base(gameFlowManager) {}
 
 		public override void EnterState() {
@@ -188,7 +189,7 @@ public class GameFlowManager : MonoBehaviour {
 		public override void LeaveState() => gameFlowManager.startTxt.transform.parent.gameObject.SetActive(false);
 	}
 
-	class GameplayFlowState : GameFlowState {
+	public class GameplayFlowState : GameFlowState {
 		public GameplayFlowState(GameFlowManager gameFlowManager) : base(gameFlowManager) {}
 
 		public override void EnterState() {
@@ -215,6 +216,7 @@ public class GameFlowManager : MonoBehaviour {
 			gameFlowManager.mainMenu.SetMenuMode(MainMenuManager.MenuMode.PauseMenu);
 			gameFlowManager.SetPauseLevel(PauseLevel.TimeStop);
 			gameFlowManager.blurFade.SetBlurred(true);
+			gameFlowManager.gameTimer.showHighScore = true;
 		}
 
 		public override void LeaveState() {
@@ -224,6 +226,7 @@ public class GameFlowManager : MonoBehaviour {
 			gameFlowManager.mainMenu.gameObject.SetActive(false);
 			gameFlowManager.SetPauseLevel(PauseLevel.NotPaused);
 			gameFlowManager.blurFade.SetBlurred(false);
+			gameFlowManager.gameTimer.showHighScore = false;
 		}
 	}
 
@@ -233,12 +236,15 @@ public class GameFlowManager : MonoBehaviour {
 		public override void EnterState() {
 			base.EnterState();
 
-			Debug.Log("You died!\nPress Accept to restart!");
 			gameFlowManager.SetPauseLevel(PauseLevel.PreventActions);
 			gameFlowManager.blurFade.SetBlurred(true);
+			gameFlowManager.gameTimer.showHighScore = true;
 		}
 		
-		public override void LeaveState() => gameFlowManager.blurFade.SetBlurred(false);
+		public override void LeaveState() {
+			gameFlowManager.blurFade.SetBlurred(false);
+			gameFlowManager.gameTimer.showHighScore = false;
+		}
 
 		public void ReloadGame() {
 			Debug.Log("Reloading scene...");

Assets/Scripts/GameTimer.cs

@@ -5,11 +5,15 @@ using UnityEngine;
 public class GameTimer : MonoBehaviour {
 	TMP_Text label;
 	float timer;
+	float highScore;
 	public bool stopped;
+	public bool showHighScore;
+	const string HighScoreKey = "High Score";
 
 	void Awake() {
 		label = GetComponent<TMP_Text>();
 		timer = 0f;
+		highScore = PlayerPrefs.GetFloat(HighScoreKey);
 		stopped = true;
 	}
 
@@ -18,7 +22,21 @@ public class GameTimer : MonoBehaviour {
 			return;
 
 		timer += Time.deltaTime;
+		SaveHighScore();
 		label.text = TimeSpan.FromSeconds(timer)
 			.ToString(@"mm\:ss");
+		if (showHighScore)
+			label.text += "\nBest Time: " + TimeSpan.FromSeconds(highScore)
+				.ToString(@"mm\:ss");
+	}
+
+	public void SaveHighScore() {
+		PlayerPrefs.SetFloat(HighScoreKey, timer);
+		highScore = timer;
+	}
+
+	public void ResetHighScore() {
+		PlayerPrefs.DeleteKey(HighScoreKey);
+		highScore = 0f;
 	}
 }