refactor: replace direct manager instances with lazy accessors for improved performance

Autoloads/GameManager.cs

@@ -21,11 +21,7 @@ public partial class GameManager : Node
     }
 
     private PlayerController _player;
-    private SpeedRunManager _speedRunManager;
-
-    /// <summary>
-    /// Lazy accessor for GameStateStore - avoids initialization order issues.
-    /// </summary>
+    private SpeedRunManager SpeedRunManager => SpeedRunManager.Instance;
     private GameStateStore Store => GameStateStore.Instance;
 
     public static GameManager Instance { get; private set; }
@@ -33,7 +29,6 @@ public partial class GameManager : Node
     public override void _Ready()
     {
         Instance = this;
-        _speedRunManager = SpeedRunManager.Instance;
         EventBus.Instance.PlayerSpawned += OnPlayerSpawned;
     }
 
@@ -197,7 +192,7 @@ public partial class GameManager : Node
     public void StartNewGame()
     {
         Store?.ResetAll();
-        _speedRunManager?.StartTimer();
+        SpeedRunManager?.StartTimer();
         GetTree().ChangeSceneToPacked(LevelScenes[0]);
         SaveSystem.Instance.SaveGame();
         EventBus.EmitGameStarted();
@@ -234,7 +229,7 @@ public partial class GameManager : Node
         Store.CommitSessionCoins();
         Store.CommitSessionSkills();
 
-        var completionTime = _speedRunManager?.GetCurrentLevelTime() ?? 0.0;
+        var completionTime = SpeedRunManager?.GetCurrentLevelTime() ?? 0.0;
         EventBus.EmitLevelCompleted(levelIndex, GetTree().CurrentScene, completionTime);
 
         Store.ResetSession();

scripts/Events/SkillCollectHandler.cs

@@ -10,11 +10,10 @@ namespace Mr.BrickAdventures.scripts.Events;
 /// </summary>
 public partial class SkillCollectHandler : Node
 {
-    private SkillManager _skillManager;
+    private SkillManager SkillManager => SkillManager.Instance;
 
     public override void _Ready()
     {
-        _skillManager = SkillManager.Instance;
         EventBus.Instance.SkillCollected += OnSkillCollected;
     }
 
@@ -35,7 +34,7 @@ public partial class SkillCollectHandler : Node
 
         // Immediately activate the skill for the player
         skill.Level = 1;
-        _skillManager?.AddSkill(skill);
+        SkillManager?.AddSkill(skill);
 
         // Emit skill unlocked event for UI/achievements
         EventBus.EmitSkillUnlocked(skill.Name, skill.Level);

scripts/Events/StatisticsEventHandler.cs

@@ -9,12 +9,10 @@ namespace Mr.BrickAdventures.scripts.Events;
 /// </summary>
 public partial class StatisticsEventHandler : Node
 {
-    private StatisticsManager _statisticsManager;
+    private StatisticsManager StatisticsManager => StatisticsManager.Instance;
 
     public override void _Ready()
     {
-        _statisticsManager = StatisticsManager.Instance;
-
         // Subscribe to events
         EventBus.Instance.CoinCollected += OnCoinCollected;
         EventBus.Instance.EnemyDefeated += OnEnemyDefeated;
@@ -36,26 +34,26 @@ public partial class StatisticsEventHandler : Node
 
     private void OnCoinCollected(int amount, Vector2 position)
     {
-        _statisticsManager.IncrementStat("coins_collected", amount);
+        StatisticsManager.IncrementStat("coins_collected", amount);
     }
 
     private void OnEnemyDefeated(Node enemy, Vector2 position)
     {
-        _statisticsManager.IncrementStat("enemies_defeated");
+        StatisticsManager.IncrementStat("enemies_defeated");
     }
 
     private void OnPlayerDied(Vector2 position)
     {
-        _statisticsManager.IncrementStat("deaths");
+        StatisticsManager.IncrementStat("deaths");
     }
 
     private void OnLevelCompleted(int levelIndex, Node currentScene, double completionTime)
     {
-        _statisticsManager.IncrementStat("levels_completed");
+        StatisticsManager.IncrementStat("levels_completed");
     }
 
     private void OnChildRescued(Vector2 position)
     {
-        _statisticsManager.IncrementStat("children_rescued");
+        StatisticsManager.IncrementStat("children_rescued");
     }
 }

scripts/UI/ChargeProgressBar.cs

@@ -1,5 +1,4 @@
 using Godot;
-using Mr.BrickAdventures;
 using Mr.BrickAdventures.Autoloads;
 using Mr.BrickAdventures.scripts.components;
 using Mr.BrickAdventures.scripts.Resources;
@@ -18,7 +17,7 @@ public partial class ChargeProgressBar : ProgressBar
     {
         ProgressBar.Hide();
 
-        _skillManager = GetNodeOrNull<SkillManager>(Constants.SkillManagerPath);
+        _skillManager = SkillManager.Instance;
         if (_skillManager == null)
         {
             GD.PrintErr("ChargeProgressBar: SkillManager autoload not found.");

scripts/UI/DeathScreen.cs

@@ -1,5 +1,4 @@
 using Godot;
-using Mr.BrickAdventures;
 using Mr.BrickAdventures.Autoloads;
 using Mr.BrickAdventures.scripts.Resources;
 using Mr.BrickAdventures.scripts.State;
@@ -15,13 +14,11 @@ public partial class DeathScreen : Control
     [Export] public float TimeoutTime { get; set; } = 2.0f;
     [Export] public Godot.Collections.Array<Node> NodesToDisable { get; set; } = new();
 
-    private GameManager _gameManager;
+    private GameManager GameManager => GameManager.Instance;
     private Timer _timer;
 
     public override void _Ready()
     {
-        _gameManager = GameManager.Instance;
-
         // Subscribe to lives changed event for reactive updates
         EventBus.Instance.LivesChanged += OnLivesChanged;
     }
@@ -74,7 +71,7 @@ public partial class DeathScreen : Control
 
     public void OnPlayerDeath()
     {
-        if (_gameManager == null) return;
+        if (GameManager == null) return;
 
         ToggleNodes();
         SetLabels();

scripts/UI/Marketplace.cs

@@ -1,7 +1,6 @@
 using System.Collections.Generic;
 using Godot;
 using Godot.Collections;
-using Mr.BrickAdventures;
 using Mr.BrickAdventures.Autoloads;
 using Mr.BrickAdventures.scripts.components;
 using Mr.BrickAdventures.scripts.Resources;
@@ -19,17 +18,14 @@ public partial class Marketplace : Control
     [Export] public PackedScene MarketplaceButtonScene { get; set; }
     [Export] public PackedScene SkillButtonScene { get; set; }
 
-    private GameManager _gameManager;
-    private SkillManager _skillManager;
+    private GameManager GameManager => GameManager.Instance;
+    private SkillManager SkillManager => SkillManager.Instance;
     private readonly List<Button> _unlockButtons = [];
     private readonly List<SkillButton> _skillButtons = [];
 
     public override void _Ready()
     {
-        _gameManager = GameManager.Instance;
-        _skillManager = SkillManager.Instance;
-
-        Skills = _skillManager.AvailableSkills;
+        Skills = SkillManager.AvailableSkills;
 
         var skillsToUnlock = new List<SkillData>();
 
@@ -37,7 +33,7 @@ public partial class Marketplace : Control
 
         foreach (var skill in skillsToUnlock) CreateUpgradeButton(skill);
 
-        var unlockedSkills = _gameManager.GetUnlockedSkills();
+        var unlockedSkills = GameManager.GetUnlockedSkills();
         foreach (var skill in unlockedSkills) CreateSkillButton(skill);
 
         SkillUnlockerComponent.SkillUnlocked += OnSkillUnlocked;
@@ -85,7 +81,7 @@ public partial class Marketplace : Control
 
         foreach (var btn in _skillButtons)
         {
-            if (_skillManager.IsSkillActive(btn.Data)) btn.Activate();
+            if (SkillManager.IsSkillActive(btn.Data)) btn.Activate();
             else btn.Deactivate();
         }
     }
@@ -117,7 +113,7 @@ public partial class Marketplace : Control
 
     private void OnUpgradeButtonPressed(SkillData skill)
     {
-        if (_gameManager.IsSkillUnlocked(skill))
+        if (GameManager.IsSkillUnlocked(skill))
         {
             if (skill.Level < skill.MaxLevel)
             {