Add EventBus, SpeedRunManager, and GhostManager; implement ghost recording and playback features

Autoloads/StatisticsManager.cs

@@ -0,0 +1,78 @@
+using Godot;
+using Godot.Collections;
+
+namespace Mr.BrickAdventures.Autoloads;
+
+public partial class StatisticsManager : Node
+{
+    private GameManager _gameManager;
+    private AchievementManager _achievementManager;
+    private Dictionary<string, Variant> _stats = new();
+
+    public override void _Ready()
+    {
+        _gameManager = GetNode<GameManager>("/root/GameManager");
+        _achievementManager = GetNode<AchievementManager>("/root/AchievementManager");
+        LoadStatistics();
+    }
+
+    private void LoadStatistics()
+    {
+        if (_gameManager.PlayerState.TryGetValue("statistics", out var statsObj))
+        {
+            _stats = (Dictionary<string, Variant>)statsObj;
+        }
+        else
+        {
+            _stats = new Dictionary<string, Variant>();
+            _gameManager.PlayerState["statistics"] = _stats;
+        }
+    }
+    
+    /// <summary>
+    /// Increases a numerical statistic by a given amount.
+    /// </summary>
+    public void IncrementStat(string statName, int amount = 1)
+    {
+        if (_stats.TryGetValue(statName, out var currentValue))
+        {
+            _stats[statName] = (int)currentValue + amount;
+        }
+        else
+        {
+            _stats[statName] = amount;
+        }
+        GD.Print($"Stat '{statName}' updated to: {_stats[statName]}");
+        CheckAchievementsForStat(statName);
+    }
+
+    /// <summary>
+    /// Gets the value of a statistic.
+    /// </summary>
+    public Variant GetStat(string statName, Variant defaultValue = default)
+    {
+        return _stats.TryGetValue(statName, out var value) ? value : defaultValue;
+    }
+
+    /// <summary>
+    /// Checks if the updated stat meets the criteria for any achievements.
+    /// </summary>
+    private void CheckAchievementsForStat(string statName)
+    {
+        switch (statName)
+        {
+            case "enemies_defeated":
+                if ((int)GetStat(statName, 0) >= 100)
+                {
+                    _achievementManager.UnlockAchievement("slayer_100_enemies");
+                }
+                break;
+            case "jumps_made":
+                if ((int)GetStat(statName, 0) >= 1000)
+                {
+                    _achievementManager.UnlockAchievement("super_jumper");
+                }
+                break;
+        }
+    }
+}