Removed dependency on tile palettes

Editor/DualGridBrush.cs

@@ -1,5 +1,7 @@
-using UnityEditor.Tilemaps;
+using System.Collections.Generic;
+using UnityEditor.Tilemaps;
 using UnityEngine;
+using UnityEngine.Tilemaps;
 
 namespace skner.DualGrid.Editor
 {
@@ -15,26 +17,47 @@ public class DualGridBrush : GridBrush
 
         public override void BoxFill(GridLayout gridLayout, GameObject brushTarget, BoundsInt bounds)
         {
-            base.BoxFill(gridLayout, brushTarget, bounds);
-
-            RefreshDualGridTilemap(brushTarget, bounds);
+            if (brushTarget.TryGetComponent(out DualGridTilemapModule dualGridTilemapModule))
+            {
+                SetDualGridTiles(dualGridTilemapModule, dualGridTilemapModule.Tile.DataTile, bounds);
+            }
+            else
+            {
+                base.BoxFill(gridLayout, brushTarget, bounds);
+            }
         }
 
         public override void BoxErase(GridLayout gridLayout, GameObject brushTarget, BoundsInt bounds)
         {
-            base.BoxErase(gridLayout, brushTarget, bounds);
+            if (brushTarget.TryGetComponent(out DualGridTilemapModule dualGridTilemapModule))
+            {
+                SetDualGridTiles(dualGridTilemapModule, null, bounds);
+            }
+            else
+            {
+                base.BoxErase(gridLayout, brushTarget, bounds);
+            }
+        }
+
+        private void SetDualGridTiles(DualGridTilemapModule dualGridTilemapModule, TileBase tile, BoundsInt bounds)
+        {
+            var tileChangeData = new List<TileChangeData>();
 
-            RefreshDualGridTilemap(brushTarget, bounds);
+            foreach (var position in bounds.allPositionsWithin)
+            {
+                tileChangeData.Add(new TileChangeData { position = position, tile = tile });
+            }
+
+            dualGridTilemapModule.DataTilemap.SetTiles(tileChangeData.ToArray(), ignoreLockFlags: false);
+            RefreshDualGridTilemap(dualGridTilemapModule, bounds);
         }
 
-        protected virtual void RefreshDualGridTilemap(GameObject brushTarget, BoundsInt bounds)
+        protected virtual void RefreshDualGridTilemap(DualGridTilemapModule dualGridTilemapModule, BoundsInt bounds)
         {
-            if (brushTarget.TryGetComponent(out DualGridTilemapModule dualGridTilemapModule))
+            foreach (var position in bounds.allPositionsWithin)
             {
-                foreach (var position in bounds.allPositionsWithin)
-                {
-                    dualGridTilemapModule.RefreshRenderTiles(position);
-                }
+                dualGridTilemapModule.RefreshRenderTiles(position);
+                dualGridTilemapModule.DataTilemap.RefreshTile(position);
             }
         }
 

Editor/Editors/DualGridBrushEditor.cs

@@ -97,6 +97,7 @@ protected virtual void DualGridPaintPreview(DualGridTilemapModule dualGridTilema
             _lastTool = GridBrushBase.Tool.Paint;
         }
 
+#if UNITY_2023_1_OR_NEWER
         public override void ErasePreview(GridLayout gridLayout, GameObject brushTarget, Vector3Int position)
         {
             if (brushTarget.TryGetComponent(out DualGridTilemapModule dualGridTilemapModule))
@@ -120,6 +121,7 @@ private void DualGridErasePreview(DualGridTilemapModule dualGridTilemapModule, B
             _lastBounds = bounds;
             _lastTool = GridBrushBase.Tool.Erase;
         }
+#endif
 
         public override void BoxFillPreview(GridLayout gridLayout, GameObject brushTarget, BoundsInt bounds)
         {

Editor/Editors/DualGridRuleTileEditor.cs

@@ -78,6 +78,7 @@ public override void OnInspectorGUI()
 
             if (EditorGUI.EndChangeCheck())
             {
+                _targetDualGridRuleTile.RefreshDataTile();
                 EditorUtility.SetDirty(_targetDualGridRuleTile);
             }
         }

Runtime/Tiles/DualGridRuleTile.cs

@@ -21,7 +21,13 @@ public class DualGridRuleTile : RuleTile<DualGridNeighbor>
         [SerializeField]
         [HideInInspector]
         private Texture2D _originalTexture;
-        public Texture2D OriginalTexture { get { return _originalTexture; } internal set { _originalTexture = value; } }
+        public Texture2D OriginalTexture { get => _originalTexture; internal set => _originalTexture = value; }
+
+        private Tile _dataTile;
+        /// <summary>
+        /// The Data Tile is a tile generated from this Dual Grid Rule Tile to populate the DataTilemap.
+        /// </summary>
+        public Tile DataTile { get => _dataTile != null ? _dataTile : RefreshDataTile(); }
 
         private DualGridTilemapModule _dualGridTilemapModule;
 
@@ -55,6 +61,21 @@ public override void GetTileData(Vector3Int position, ITilemap tilemap, ref Tile
             base.GetTileData(position, tilemap, ref tileData);
         }
 
+        /// <summary>
+        /// Refreshes the <see cref="DataTile"/> with this <see cref="DualGridRuleTile"/>'s configuration.
+        /// </summary>
+        /// <returns>The refreshed data tile.</returns>
+        public virtual Tile RefreshDataTile()
+        {
+            if (_dataTile == null) _dataTile = ScriptableObject.CreateInstance<Tile>();
+
+            _dataTile.name = this.name;
+            _dataTile.colliderType = this.m_DefaultColliderType;
+            _dataTile.gameObject = this.m_DefaultGameObject;
+
+            return _dataTile;
+        }
+
         /// <inheritdoc/>
         public override bool RuleMatches(TilingRule ruleToValidate, Vector3Int renderTilePosition, ITilemap tilemap, ref Matrix4x4 transform)
         {
@@ -147,5 +168,6 @@ private void SetDataTilemap(ITilemap tilemap)
                 //    $"If the tilemap is a tile palette, discard this warning, otherwise investigate it, as this tile won't work properly.", originTilemap);
             }
         }
+
     }
 }