✨ Placement check with collision

Scripts/Tiles/BaseTile.cs

@@ -1,30 +1,45 @@
 using Godot;
 
-namespace AceFieldNewHorizon.Scripts.Tiles;
-
-public partial class BaseTile : Node2D
+namespace AceFieldNewHorizon.Scripts.Tiles
 {
-    protected CollisionShape2D CollisionShape;
-    protected Sprite2D Sprite;
-
-    public override void _Ready()
+    public partial class BaseTile : Node2D
     {
-        // Get references (optional: you can also Export and assign in editor)
-        CollisionShape = GetNode<CollisionShape2D>("CollisionShape2D");
-        Sprite = GetNode<Sprite2D>("Sprite2D");
-    }
+        private CollisionShape2D _collisionShape;
+        private Sprite2D _sprite;
 
-    public void SetGhostMode(bool ghost)
-    {
-        if (CollisionShape != null)
-            CollisionShape.Disabled = ghost;
-
-        if (Sprite != null)
+        public override void _Ready()
         {
-            if (ghost)
-                Sprite.Modulate = new Color(1, 1, 1, 0.5f); // semi-transparent
-            else
-                Sprite.Modulate = Colors.White;
+            _collisionShape = GetNodeOrNull<CollisionShape2D>("CollisionShape2D");
+            _sprite = GetNodeOrNull<Sprite2D>("Sprite2D");
+        }
+
+        /// <summary>
+        /// Switch between ghost and placed mode.
+        /// </summary>
+        /// <param name="canPlace">If in ghost mode, true = green, false = red. If placed, always white.</param>
+        public void SetGhostMode(bool canPlace)
+        {
+            if (_collisionShape != null)
+                _collisionShape.Disabled = true; // always disabled in ghost mode
+
+            if (_sprite != null)
+            {
+                // Ghost preview coloring
+                _sprite.Modulate = canPlace ? new Color(1, 1, 1, 0.2f) : // white semi-transparent
+                    new Color(1, 0, 0, 0.2f); // red semi-transparent
+            }
+        }
+
+        /// <summary>
+        /// Call when placement is finalized.
+        /// </summary>
+        public void FinalizePlacement()
+        {
+            if (_collisionShape != null)
+                _collisionShape.Disabled = false;
+
+            if (_sprite != null)
+                _sprite.Modulate = Colors.White; // reset to normal
         }
     }
 }