some adjustments on stage editor

Assets/Scripts/Editor/GardensStageEditor/StageDefinition.cs

@@ -16,8 +16,7 @@ namespace Editor.GardensStageEditor
     {
         Empty = 0,
         Ground = 1,
-        Wall = 2,
+        Wall = 2
-        Hole = 3
     }
 
     public enum StageObjectKind

Assets/Scripts/Editor/GardensStageEditor/StageEditorColors.cs

@@ -14,17 +14,12 @@ namespace Editor.GardensStageEditor
 
         public static Color Structural(StructuralCellKind kind)
         {
-            switch (kind)
+            return kind switch
             {
-                case StructuralCellKind.Ground:
+                StructuralCellKind.Ground => new Color(0.28f, 0.52f, 0.35f, 0.8f),
-                    return new Color(0.28f, 0.52f, 0.35f, 0.8f);
+                StructuralCellKind.Wall => new Color(0.38f, 0.38f, 0.42f, 0.9f),
-                case StructuralCellKind.Wall:
+                _ => new Color(0f, 0f, 0f, 0f)
-                    return new Color(0.38f, 0.38f, 0.42f, 0.9f);
+            };
-                case StructuralCellKind.Hole:
-                    return new Color(0.05f, 0.05f, 0.05f, 0.9f);
-                default:
-                    return new Color(0f, 0f, 0f, 0f);
-            }
         }
 
         public static Color Layer(StageLogicalLayer layer)

Assets/Scripts/Editor/GardensStageEditor/StagePaletteEntry.cs

@@ -63,7 +63,6 @@ namespace Editor.GardensStageEditor
             {
                 Structural("struct_ground", "Ground", StructuralCellKind.Ground),
                 Structural("struct_wall", "Wall", StructuralCellKind.Wall),
-                Structural("struct_hole", "Hole", StructuralCellKind.Hole),
                 Structural("struct_empty", "Erase Structural", StructuralCellKind.Empty)
             };