Pacxon (#12)

* Add GridMovementAbility and PacXonGridInteractor for grid-based movement; integrate with PlayerController and PacXonLevel

* Add GhostMovementComponent and PacXonTrailComponent; integrate ghost movement and trail features in PacXonLevel

* Update main menu button focus and add new movement abilities; adjust player and ghost initialization in PacXonLevel

scripts/PacXonLevel.cs

@@ -0,0 +1,59 @@
+using System.Linq;
+using Godot;
+using Mr.BrickAdventures.scripts.components;
+
+namespace Mr.BrickAdventures.scripts;
+
+[GlobalClass]
+public partial class PacXonLevel : Node
+{
+    [Export] public PlayerController Player { get; set; }
+    [Export] public PacXonGridManager GridManager { get; set; }
+    [Export] public Node GhostContainer { get; set; }
+    [Export] public Label PercentageLabel { get; set; }
+    
+    private const float WinPercentage = 0.90f;
+
+    public override void _Ready()
+    {
+        var ghosts = GhostContainer.GetChildren().OfType<Node2D>().ToList();
+        Player.ClearMovementAbilities();
+        Player.SetGridMovement();
+        
+        foreach (var ghost in ghosts)
+        {
+            var movement = ghost.GetNode<GhostMovementComponent>("GhostMovementComponent");
+            movement?.Initialize(GridManager, Player);
+        }
+        
+        var gridMovement = Player.GetNodeOrNull<GridMovementAbility>("Movements/GridMovementAbility");
+        var gridInteractor = Player.GetNodeOrNull<PacXonGridInteractor>("PacXonGridInteractor");
+        var trailComponent = Player.GetNodeOrNull<PacXonTrailComponent>("PacXonTrailComponent");
+
+        if (gridMovement != null && gridInteractor != null)
+        {
+            gridInteractor.Initialize(GridManager, gridMovement, ghosts);
+            trailComponent?.Initialize(gridInteractor);
+        }
+        else
+        {
+            GD.PushError("Could not find GridMovementAbility or PacXonGridInteractor on Player.");
+        }
+        
+        GridManager.FillPercentageChanged += OnFillPercentageChanged;
+        OnFillPercentageChanged(GridManager.GetFillPercentage());
+        
+        var playerMapPos = GridManager.LocalToMap(Player.Position);
+        Player.GlobalPosition = GridManager.MapToLocal(playerMapPos);
+    }
+    
+    private void OnFillPercentageChanged(float percentage)
+    {
+        PercentageLabel.Text = $"Fill: {percentage:P0}";
+        if (percentage >= WinPercentage)
+        {
+            GD.Print("YOU WIN!");
+            GetTree().Paused = true;
+        }
+    }
+}