Add maze generation visualization with 2-phase animation

Enhance maze generation animation system with visual feedback during algorithm execution and a two-phase rendering approach: - Phase 1: Preview mode displays simple blocks while algorithms run, with real-time feedback for path checking (valid/invalid/evaluating states) - Phase 2: Sweep 3D modular pieces into place with pop-in animations Updates: - New MazeCellHighlight states (EvaluatingValid, EvaluatingInvalid) for algorithm feedback - Modified all maze algorithms (DFS, Kruskal's, Prim's) to emit visual feedback when checking adjacent cells - New animation components: HighlightLinger (self-destruct highlights) and PopInAnimation (juicy pop-in effect) - Refactored MazeReworkSpawner to support preview prefabs and track spawned object state - New prefabs: Stair room and MazeVisualize variants - Added stepDelay and isPreviewMode controls to MazeAnimator for flexible pacing - Reduced default maze size and adjusted material colors for testing
2026-07-04 05:01:00 +07:00
parent a3359cf7e1
commit bdbb76a42a
26 changed files with 1345 additions and 92 deletions
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--- a/Assets/Prefabs/Environment/Room/Stair.prefab.meta
+++ b/Assets/Prefabs/Environment/Room/Stair.prefab.meta
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 4068079ff983733439d9bdddff56ea18
+PrefabImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
--- a/Assets/Presets/MazeRework.asset
+++ b/Assets/Presets/MazeRework.asset
@@ -13,8 +13,8 @@ MonoBehaviour:
  m_Name: MazeRework
  m_EditorClassIdentifier: Assembly-CSharp::Baba_yaga.GameSetup.MazeRework.MazeReworkConfig
  algorithm: 3
-  width: 21
-  depth: 21
+  width: 10
+  depth: 10
  useRandomSeed: 1
  seed: 1337
  startLocation: {x: 1, y: 1}
@@ -22,5 +22,5 @@ MonoBehaviour:
  roomCount: 378
  minRoomSize: {x: 3, y: 3}
  maxRoomSize: {x: 5, y: 5}
-  extraRoomDoorChance: 0.3
+  extraRoomDoorChance: 1
  loopChance: 0.1
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Algorithms/DFSIterative.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Algorithms/DFSIterative.cs
@@ -29,8 +29,28 @@ namespace Baba_yaga.GameSetup.MazeRework.Algorithms
                {
                    int nx = current.x + dx[i];
                    int nz = current.y + dz[i];
-                    if (nx > 0 && nx < width - 1 && nz > 0 && nz < depth - 1 && !visited[nx, nz])
-                        candidates.Add(i);
+                    int wx = current.x + dx[i] / 2;
+                    int wz = current.y + dz[i] / 2;
+
+                    if (nx > 0 && nx < width - 1 && nz > 0 && nz < depth - 1)
+                    {
+                        if (!visited[nx, nz])
+                        {
+                            candidates.Add(i);
+                        }
+                        else
+                        {
+                            // Checked a visited cell
+                            onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.EvaluatingInvalid);
+                            onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.None);
+                        }
+                    }
+                    else
+                    {
+                        // Checked out of bounds
+                        onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.EvaluatingInvalid);
+                        onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.None);
+                    }
                }

                if (candidates.Count > 0)
@@ -46,6 +66,10 @@ namespace Baba_yaga.GameSetup.MazeRework.Algorithms
                    visited[wx, wz]   = true;
                    visited[nx2, nz2] = true;

+                    // Show valid pick
+                    onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.EvaluatingValid);
+                    onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.None);
+
                    // Move head off current cell
                    onCellChanged?.Invoke(current.x, current.y, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.None);
                    
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Algorithms/DFSRecursive.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Algorithms/DFSRecursive.cs
@@ -38,25 +38,44 @@ namespace Baba_yaga.GameSetup.MazeRework.Algorithms
                int wx = cx + dx[order[i]] / 2;
                int wz = cz + dz[order[i]] / 2;

-                if (nx > 0 && nx < width - 1 && nz > 0 && nz < depth - 1 && !visited[nx, nz])
+                if (nx > 0 && nx < width - 1 && nz > 0 && nz < depth - 1)
                {
-                    grid[wx, wz] = MazeReworkCellType.Corridor;
-                    grid[nx, nz] = MazeReworkCellType.Corridor;
-                    visited[wx, wz] = true;
-                    visited[nx, nz] = true;
+                    if (!visited[nx, nz])
+                    {
+                        // Valid path found! Show valid check
+                        onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.EvaluatingValid);
+                        onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.None);

-                    // Move head off current cell
-                    onCellChanged?.Invoke(cx, cz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.None);
-                    
-                    // Show intermediate wall breaking with head
-                    onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.SearchHead);
-                    onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.None);
+                        grid[wx, wz] = MazeReworkCellType.Corridor;
+                        grid[nx, nz] = MazeReworkCellType.Corridor;
+                        visited[wx, wz] = true;
+                        visited[nx, nz] = true;

-                    CarveFrom(nx, nz, grid, visited, rng, width, depth, onCellChanged);
+                        // Move head off current cell
+                        onCellChanged?.Invoke(cx, cz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.None);
+                        
+                        // Show intermediate wall breaking with head
+                        onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.SearchHead);
+                        onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.None);

-                    // Clear head from the child cell and restore it here
-                    onCellChanged?.Invoke(nx, nz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.None);
-                    onCellChanged?.Invoke(cx, cz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.SearchHead);
+                        CarveFrom(nx, nz, grid, visited, rng, width, depth, onCellChanged);
+
+                        // Clear head from the child cell and restore it here
+                        onCellChanged?.Invoke(nx, nz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.None);
+                        onCellChanged?.Invoke(cx, cz, MazeReworkCellType.Corridor, Animation.MazeCellHighlight.SearchHead);
+                    }
+                    else
+                    {
+                        // Invalid path (already visited)
+                        onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.EvaluatingInvalid);
+                        onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.None);
+                    }
+                }
+                else
+                {
+                    // Invalid path (out of bounds)
+                    onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.EvaluatingInvalid);
+                    onCellChanged?.Invoke(wx, wz, MazeReworkCellType.Wall, Animation.MazeCellHighlight.None);
                }
            }
        }
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Algorithms/Kruskals.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Algorithms/Kruskals.cs
@@ -49,9 +49,13 @@ namespace Baba_yaga.GameSetup.MazeRework.Algorithms

                // Show evaluating highlight
                onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.Evaluating);
+                onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.None);

                if (uf.Find(cellId[ax, az]) != uf.Find(cellId[bx, bz]))
                {
+                    onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.EvaluatingValid);
+                    onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.None);
+
                    grid[wx, wz] = MazeReworkCellType.Corridor;
                    grid[ax, az] = MazeReworkCellType.Corridor;
                    grid[bx, bz] = MazeReworkCellType.Corridor;
@@ -65,7 +69,8 @@ namespace Baba_yaga.GameSetup.MazeRework.Algorithms
                }
                else
                {
-                    // Clear evaluate highlight
+                    // Invalid
+                    onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.EvaluatingInvalid);
                    onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.None);
                }
            }
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Algorithms/Prims.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Algorithms/Prims.cs
@@ -31,11 +31,17 @@ namespace Baba_yaga.GameSetup.MazeRework.Algorithms

                if (visited[nx, nz])
                {
+                    onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.EvaluatingInvalid);
+                    onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.None);
+                    
                    // Clear the frontier highlight if this cell was already visited by another path
                    onCellChanged?.Invoke(nx, nz, grid[nx, nz], Animation.MazeCellHighlight.None);
                    continue;
                }

+                onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.EvaluatingValid);
+                onCellChanged?.Invoke(wx, wz, grid[wx, wz], Animation.MazeCellHighlight.None);
+
                grid[wx, wz] = MazeReworkCellType.Corridor;
                grid[nx, nz] = MazeReworkCellType.Corridor;
                visited[wx, wz] = true;
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/HighlightLinger.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/HighlightLinger.cs
@@ -0,0 +1,34 @@
+using System.Collections;
+using UnityEngine;
+
+namespace Baba_yaga.GameSetup.MazeRework.Animation
+{
+    public class HighlightLinger : MonoBehaviour
+    {
+        public float lingerTime = 0.4f;
+
+        private void Start()
+        {
+            StartCoroutine(LingerAndDie());
+        }
+
+        private IEnumerator LingerAndDie()
+        {
+            yield return new WaitForSeconds(lingerTime);
+            
+            // Optional: fade out logic could go here
+            float fadeOutTime = 0.1f;
+            float time = 0f;
+            Vector3 startScale = transform.localScale;
+
+            while (time < fadeOutTime)
+            {
+                time += Time.deltaTime;
+                transform.localScale = Vector3.Lerp(startScale, Vector3.zero, time / fadeOutTime);
+                yield return null;
+            }
+
+            Destroy(gameObject);
+        }
+    }
+}
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/HighlightLinger.cs.meta
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/HighlightLinger.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 5e88f5f0389dbd043937d08377e3168a
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/MazeAnimator.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/MazeAnimator.cs
@@ -7,9 +7,12 @@ namespace Baba_yaga.GameSetup.MazeRework.Animation
    public class MazeAnimator : MonoBehaviour
    {
        [Header("Animation Settings")]
-        [Tooltip("How many cell changes to process in a single frame. Higher = faster generation.")]
+        [Tooltip("How many cell changes to process in a single frame (if stepDelay is 0).")]
        [Min(1)]
-        public int cellsPerFrame = 5;
+        public int cellsPerFrame = 1; // Default to 1 so you can see it clearly!
+
+        [Tooltip("Delay in seconds between every single cell change. Set to > 0 to actually see the checking flashes!")]
+        public float stepDelay = 0.05f;

        [Tooltip("Extra delay (in seconds) between major generation phases (like switching from Rooms to Carving).")]
        public float delayBetweenPhases = 0.5f;
@@ -63,6 +66,7 @@ namespace Baba_yaga.GameSetup.MazeRework.Animation
            }

            spawner.Clear();
+            spawner.isPreviewMode = true; // Phase 1: Simple preview blocks

            MazeAnimationPhase currentPhase = MazeAnimationPhase.RoomPlacement;
            int processedThisFrame = 0;
@@ -80,13 +84,29 @@ namespace Baba_yaga.GameSetup.MazeRework.Animation
                }

                workingGrid[change.X, change.Z] = change.Type;
-                workingHighlights[change.X, change.Z] = change.Highlight;
+                
+                if (change.Highlight == MazeCellHighlight.EvaluatingValid || 
+                    change.Highlight == MazeCellHighlight.EvaluatingInvalid || 
+                    change.Highlight == MazeCellHighlight.Evaluating)
+                {
+                    // Linger flashes independently so they don't get erased if cellsPerFrame > 1
+                    spawner.FlashHighlight(change.Highlight, change.X, change.Z, yOffset, container);
+                }
+                else
+                {
+                    workingHighlights[change.X, change.Z] = change.Highlight;
+                }
                
                // Refresh the cell and its neighbors in the spawner
                spawner.RefreshCell(workingGrid, workingHighlights, change.X, change.Z, yOffset, container);

                processedThisFrame++;
-                if (processedThisFrame >= cellsPerFrame)
+                
+                if (stepDelay > 0f)
+                {
+                    yield return new WaitForSeconds(stepDelay);
+                }
+                else if (processedThisFrame >= cellsPerFrame)
                {
                    yield return null; // Wait for next frame
                    processedThisFrame = 0;
@@ -96,21 +116,52 @@ namespace Baba_yaga.GameSetup.MazeRework.Animation
            // Wait a moment at the end before finalizing
            if (delayBetweenPhases > 0f)
            {
-                yield return new WaitForSeconds(delayBetweenPhases);
+                yield return new WaitForSeconds(delayBetweenPhases * 2f); // Extra pause to admire the 2D layout!
            }

-            // One final sync with finalGrid just to be absolutely safe
+            // --- Phase 2: Render 3D Map ---
+            spawner.isPreviewMode = false;
+            
+            // Sweep across the grid and spawn the heavy 3D modular pieces
            for (int z = 0; z < depth; z++)
            {
                for (int x = 0; x < width; x++)
                {
-                    bool gridChanged = workingGrid[x, z] != finalGrid[x, z];
-                    bool highlightChanged = workingHighlights[x, z] != MazeCellHighlight.None;
-
-                    if (gridChanged || highlightChanged)
+                    workingGrid[x, z] = finalGrid[x, z];
+                    workingHighlights[x, z] = MazeCellHighlight.None;
+                    
+                    // Only yield when we actually spawn a piece to create a cool sweep wave!
+                    if (finalGrid[x, z] != MazeReworkCellType.Wall)
                    {
-                        workingGrid[x, z] = finalGrid[x, z];
-                        workingHighlights[x, z] = MazeCellHighlight.None;
+                        // 1. Flash an Evaluating highlight to visualize "choosing" this cell
+                        spawner.FlashHighlight(MazeCellHighlight.EvaluatingValid, x, z, yOffset, container);
+                        
+                        if (stepDelay > 0f)
+                        {
+                            yield return new WaitForSeconds(stepDelay * 0.5f); // Short pause for the check
+                        }
+                        
+                        // 2. Spawn the actual piece
+                        spawner.RefreshCell(workingGrid, workingHighlights, x, z, yOffset, container);
+                        
+                        // Wait a tiny fraction of a second to create the sweeping wave effect
+                        if (stepDelay > 0f)
+                        {
+                            yield return new WaitForSeconds(stepDelay * 0.5f); // faster than the algorithm checks
+                        }
+                        else
+                        {
+                            processedThisFrame++;
+                            if (processedThisFrame >= cellsPerFrame * 2) // Twice as fast as algorithm phase
+                            {
+                                yield return null;
+                                processedThisFrame = 0;
+                            }
+                        }
+                    }
+                    else
+                    {
+                        // Even if it's a wall, refresh it to clear the preview walls (if any)
                        spawner.RefreshCell(workingGrid, workingHighlights, x, z, yOffset, container);
                    }
                }
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/MazeCellHighlight.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/MazeCellHighlight.cs
@@ -5,6 +5,8 @@ namespace Baba_yaga.GameSetup.MazeRework.Animation
        None,
        SearchHead,   // Current cell being evaluated (DFS, Prim's)
        Frontier,     // Known candidate cells (Prim's)
-        Evaluating    // Walls currently being considered (Kruskal's)
+        Evaluating,   // Walls currently being considered (Kruskal's)
+        EvaluatingValid,
+        EvaluatingInvalid
    }
 }
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/PopInAnimation.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/PopInAnimation.cs
@@ -0,0 +1,52 @@
+using System.Collections;
+using UnityEngine;
+
+namespace Baba_yaga.GameSetup.MazeRework.Animation
+{
+    public class PopInAnimation : MonoBehaviour
+    {
+        public float duration = 0.25f;
+        public float delay = 0f;
+
+        private void Start()
+        {
+            StartCoroutine(AnimateScale());
+        }
+
+        private IEnumerator AnimateScale()
+        {
+            Vector3 targetScale = transform.localScale;
+            Quaternion targetRot = transform.localRotation;
+            
+            transform.localScale = Vector3.zero;
+            // Start rotation off by 90 degrees on Y axis so it visibly "spins" into the correct orientation
+            transform.localRotation = targetRot * Quaternion.Euler(0, -90f, 0);
+
+            if (delay > 0f)
+                yield return new WaitForSeconds(delay);
+
+            float time = 0f;
+            while (time < duration)
+            {
+                time += Time.deltaTime;
+                float t = time / duration;
+                
+                // easeOutBack formula for a juicy overshoot effect
+                float c1 = 1.70158f;
+                float c3 = c1 + 1f;
+                float easeT = 1f + c3 * Mathf.Pow(t - 1f, 3f) + c1 * Mathf.Pow(t - 1f, 2f);
+
+                transform.localScale = targetScale * Mathf.Max(0f, easeT);
+                
+                // Spin into place using easeOut
+                float easeOutQuad = 1 - (1 - t) * (1 - t);
+                transform.localRotation = Quaternion.SlerpUnclamped(targetRot * Quaternion.Euler(0, -90f, 0), targetRot, easeT);
+                
+                yield return null;
+            }
+
+            transform.localScale = targetScale;
+            transform.localRotation = targetRot;
+        }
+    }
+}
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/PopInAnimation.cs.meta
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/Animation/PopInAnimation.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 43114e744edaec247a2ece63347b73cd
--- a/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/MazeReworkSpawner.cs
+++ b/Assets/Scripts/Baba_yaga/GameSetup/MazeRework/MazeReworkSpawner.cs
@@ -28,6 +28,16 @@ namespace Baba_yaga.GameSetup.MazeRework
        [Tooltip("Prefab for the End cell (player exit point). Auto-rotates based on neighbors.")]
        public GameObject endPrefab;

+        [Header("Preview Mode Settings (Phase 1)")]
+        [Tooltip("If true, the spawner will only spawn simple preview blocks instead of full 3D modular pieces.")]
+        public bool isPreviewMode = false;
+        
+        [Tooltip("Simple prefab to represent carved paths during the algorithm phase (e.g. a flat plane or basic cube).")]
+        public GameObject previewPathPrefab;
+        
+        [Tooltip("Simple prefab to represent walls during the algorithm phase (optional, can be left null).")]
+        public GameObject previewWallPrefab;
+
        [Header("Highlight Prefabs (Animation Only)")]
        public GameObject searchHeadPrefab;
        public GameObject frontierPrefab;
@@ -53,7 +63,14 @@ namespace Baba_yaga.GameSetup.MazeRework
        [Tooltip("Physical distance between each grid cell center.")]
        public float spacing = 3.0f;

-        private readonly Dictionary<Vector2Int, GameObject> _spawnedObjects = new Dictionary<Vector2Int, GameObject>();
+        private struct SpawnedCellData
+        {
+            public GameObject Instance;
+            public GameObject Prefab;
+            public float Rotation;
+        }
+
+        private readonly Dictionary<Vector2Int, SpawnedCellData> _spawnedGridCells = new Dictionary<Vector2Int, SpawnedCellData>();
        private readonly Dictionary<Vector2Int, GameObject> _spawnedHighlights = new Dictionary<Vector2Int, GameObject>();

        private void Start()
@@ -80,12 +97,12 @@ namespace Baba_yaga.GameSetup.MazeRework
        /// </summary>
        public void Clear()
        {
-            foreach (var obj in _spawnedObjects.Values)
+            foreach (var data in _spawnedGridCells.Values)
            {
-                if (obj == null) continue;
-                if (Application.isPlaying) Destroy(obj); else DestroyImmediate(obj);
+                if (data.Instance == null) continue;
+                if (Application.isPlaying) Destroy(data.Instance); else DestroyImmediate(data.Instance);
            }
-            _spawnedObjects.Clear();
+            _spawnedGridCells.Clear();

            foreach (var obj in _spawnedHighlights.Values)
            {
@@ -131,6 +148,23 @@ namespace Baba_yaga.GameSetup.MazeRework
            RefreshSingleCell(grid, highlights, x, z - 1, width, depth, yOffset, container);
        }

+        public void FlashHighlight(MazeCellHighlight hType, int x, int z, float yOffset, Transform container)
+        {
+            GameObject hPrefab = null;
+            if (hType == MazeCellHighlight.EvaluatingValid) hPrefab = searchHeadPrefab;
+            else if (hType == MazeCellHighlight.EvaluatingInvalid) hPrefab = evaluatingPrefab;
+            else if (hType == MazeCellHighlight.Evaluating) hPrefab = evaluatingPrefab;
+
+            if (hPrefab != null)
+            {
+                Vector3 localPos = new Vector3(x * spacing, yOffset, z * spacing);
+                GameObject spawnedH = Instantiate(hPrefab, container != null ? container : transform);
+                spawnedH.transform.localPosition = localPos;
+                spawnedH.name = $"Flash_{hType}_{x}_{z}";
+                spawnedH.AddComponent<Animation.HighlightLinger>(); // Self-destructs after lingering
+            }
+        }
+
        private void RefreshSingleCell(MazeReworkCellType[,] grid, MazeCellHighlight[,] highlights, int x, int z, int width, int depth, float yOffset, Transform container)
        {
            if (x < 0 || x >= width || z < 0 || z >= depth) return;
@@ -153,6 +187,8 @@ namespace Baba_yaga.GameSetup.MazeRework
                if (hType == MazeCellHighlight.SearchHead) hPrefab = searchHeadPrefab;
                else if (hType == MazeCellHighlight.Frontier) hPrefab = frontierPrefab;
                else if (hType == MazeCellHighlight.Evaluating) hPrefab = evaluatingPrefab;
+                else if (hType == MazeCellHighlight.EvaluatingValid) hPrefab = searchHeadPrefab; // Use same prefab or we can add new ones, but for now fallback to Head/Evaluating
+                else if (hType == MazeCellHighlight.EvaluatingInvalid) hPrefab = evaluatingPrefab;

                if (hPrefab != null)
                {
@@ -160,58 +196,86 @@ namespace Baba_yaga.GameSetup.MazeRework
                    GameObject spawnedH = Instantiate(hPrefab, container != null ? container : transform);
                    spawnedH.transform.localPosition = localPos;
                    spawnedH.name = $"Highlight_{hType}_{x}_{z}";
+                    // Highlights should pop instantly without animation since they are short-lived cursors
                    _spawnedHighlights[pos] = spawnedH;
                }
            }

            // 2. Process Grid Cells
-            if (type == MazeReworkCellType.Wall)
+            GameObject targetPrefab = null;
+            float targetRot = 0f;
+            string targetName = "";
+
+            if (isPreviewMode)
            {
-                if (_spawnedObjects.TryGetValue(pos, out GameObject existing))
+                if (type == MazeReworkCellType.Wall)
                {
-                    if (Application.isPlaying) Destroy(existing);
-                    else DestroyImmediate(existing);
-                    _spawnedObjects.Remove(pos);
+                    targetPrefab = previewWallPrefab;
+                    targetName = "PreviewWall";
+                }
+                else
+                {
+                    targetPrefab = previewPathPrefab;
+                    targetName = "PreviewPath";
+                }
+            }
+            else
+            {
+                if (type != MazeReworkCellType.Wall)
+                {
+                    if (type == MazeReworkCellType.Start && beginningPrefab != null)
+                    {
+                        (_, float baseRot) = GetModularPrefabAndRotation(grid, x, z, width, depth);
+                        targetPrefab = beginningPrefab;
+                        targetRot = baseRot + beginningRotationOffset;
+                        targetName = "Beginning";
+                    }
+                    else if (type == MazeReworkCellType.End && endPrefab != null)
+                    {
+                        (_, float baseRot) = GetModularPrefabAndRotation(grid, x, z, width, depth);
+                        targetPrefab = endPrefab;
+                        targetRot = baseRot + endRotationOffset;
+                        targetName = "End";
+                    }
+                    else
+                    {
+                        (targetPrefab, targetRot) = GetModularPrefabAndRotation(grid, x, z, width, depth);
+                        targetName = $"{type}";
+                    }
+                }
+            }
+
+            if (targetPrefab == null)
+            {
+                if (_spawnedGridCells.TryGetValue(pos, out var existing))
+                {
+                    if (Application.isPlaying) Destroy(existing.Instance);
+                    else DestroyImmediate(existing.Instance);
+                    _spawnedGridCells.Remove(pos);
                }
                return;
            }

-            if (type == MazeReworkCellType.Start && beginningPrefab != null)
+            // If it already exists and is the identical prefab/rotation, DO NOT recreate it!
+            // This prevents PopInAnimation from constantly restarting when neighbors are evaluated.
+            if (_spawnedGridCells.TryGetValue(pos, out var existingData))
            {
-                (_, float baseRot) = GetModularPrefabAndRotation(grid, x, z, width, depth);
-                SpawnPrefab(beginningPrefab, x, yOffset, z, baseRot + beginningRotationOffset, container, "Beginning");
-                return;
+                if (existingData.Prefab == targetPrefab && Mathf.Approximately(existingData.Rotation, targetRot))
+                {
+                    return; // No change needed!
+                }
+                if (Application.isPlaying) Destroy(existingData.Instance);
+                else DestroyImmediate(existingData.Instance);
            }

-            if (type == MazeReworkCellType.End && endPrefab != null)
-            {
-                (_, float baseRot) = GetModularPrefabAndRotation(grid, x, z, width, depth);
-                SpawnPrefab(endPrefab, x, yOffset, z, baseRot + endRotationOffset, container, "End");
-                return;
-            }
-
-            (GameObject modularPrefab, float yRotation) = GetModularPrefabAndRotation(grid, x, z, width, depth);
-            if (modularPrefab != null)
-            {
-                SpawnPrefab(modularPrefab, x, yOffset, z, yRotation, container, $"{type}");
-            }
-        }
-
-        private void SpawnPrefab(GameObject prefab, int x, float y, int z, float yRotation, Transform container, string namePrefix)
-        {
-            Vector3 localPosition = new Vector3(x * spacing, y, z * spacing);
-            GameObject spawnedObj = Instantiate(prefab, container != null ? container : transform);
+            Vector3 localPosition = new Vector3(x * spacing, yOffset, z * spacing);
+            GameObject spawnedObj = Instantiate(targetPrefab, container != null ? container : transform);
            spawnedObj.transform.localPosition = localPosition;
-            spawnedObj.transform.localRotation = Quaternion.Euler(0f, yRotation, 0f);
-            spawnedObj.name = $"{namePrefix}_{x}_{z}";
+            spawnedObj.transform.localRotation = Quaternion.Euler(0f, targetRot, 0f);
+            spawnedObj.name = $"{targetName}_{x}_{z}";
+            spawnedObj.AddComponent<Animation.PopInAnimation>();

-            var pos = new Vector2Int(x, z);
-            if (_spawnedObjects.TryGetValue(pos, out GameObject existing))
-            {
-                if (Application.isPlaying) Destroy(existing);
-                else DestroyImmediate(existing);
-            }
-            _spawnedObjects[pos] = spawnedObj;
+            _spawnedGridCells[pos] = new SpawnedCellData { Instance = spawnedObj, Prefab = targetPrefab, Rotation = targetRot };
        }

        private (GameObject, float) GetModularPrefabAndRotation(MazeReworkCellType[,] grid, int x, int z, int width, int depth)