From 668bd03f632f3e39b7833f4d998b334828641dff Mon Sep 17 00:00:00 2001
From: Jesus Castro <jjoesei.castro@gmail.com>
Date: Thu, 18 Dec 2025 03:44:51 +0800
Subject: [PATCH] Optimization and Documentation

---
 Assets/Scripts/Services/AudioService.cs       |   2 +-
 Assets/Scripts/Services/BombService.cs        |  23 ++-
 Assets/Scripts/Services/GameBoardService.cs   | 155 ++++++++++++++----
 Assets/Scripts/Services/InputService.cs       |   2 +-
 .../Services/Interfaces/IBombService.cs       |  43 ++++-
 .../Services/Interfaces/IGameBoardService.cs  |   2 +-
 .../Services/Interfaces/IMatchService.cs      |  20 ++-
 .../Services/Interfaces/IScoreService.cs      |   2 +-
 Assets/Scripts/Services/MatchService.cs       |   6 +-
 Assets/Scripts/Services/ScoreService.cs       |   2 +-
 10 files changed, 204 insertions(+), 53 deletions(-)

diff --git a/Assets/Scripts/Services/AudioService.cs b/Assets/Scripts/Services/AudioService.cs
index fcc3c4e..6d0900c 100644
--- a/Assets/Scripts/Services/AudioService.cs
+++ b/Assets/Scripts/Services/AudioService.cs
@@ -25,7 +25,7 @@ namespace Services
         public void PlaySound(AudioClip clip)
         {
             if (clip == null) return;
-            if (this.source == null) return; // In case called before Initialize in some edge setup
+            if (this.source == null) return; // In case it's called before Initialize in some edge setup
 
             this.source.PlayOneShot(clip);
         }
diff --git a/Assets/Scripts/Services/BombService.cs b/Assets/Scripts/Services/BombService.cs
index c7f821e..89a5af0 100644
--- a/Assets/Scripts/Services/BombService.cs
+++ b/Assets/Scripts/Services/BombService.cs
@@ -20,7 +20,6 @@ namespace Services
         private Vector2Int lastSwapTo;
         
         private BombSpawnRequest? pendingBombSpawn;
-        public BombSpawnRequest? PendingBombSpawn => this.pendingBombSpawn;
 
         public BombService(GameVariables gameVariables, IGameBoard gameBoard) {
             this.gameVariables = gameVariables;
@@ -33,8 +32,8 @@ namespace Services
             
             ClearPendingBombs();
         }
-
-        public UniTask<List<Vector2Int>> GetInitialBombs(List<Vector2Int> protectedPositions, List<Vector2Int> bombCandidates) {
+        
+        public UniTask<List<Vector2Int>> GetInitialBombs(List<Vector2Int> protectedPositions, HashSet<Vector2Int> bombCandidates) {
             HashSet<Vector2Int> initialBombs = new HashSet<Vector2Int>();
             foreach (Vector2Int p in bombCandidates) {
                 if (!GemUtils.IsInBounds(p, this.gameBoard)) continue;
@@ -52,10 +51,10 @@ namespace Services
 
         public List<Vector2Int> ApplyPendingBombSpawns(Action<Vector2Int, GemType, bool> spawnGem) {
             List<Vector2Int> positions = new List<Vector2Int>();
-            BombSpawnRequest? bombSpawnRequest = PendingBombSpawn;
+            BombSpawnRequest? bombSpawnRequest = this.pendingBombSpawn;
             
             if (bombSpawnRequest != null) {
-                BombSpawnRequest bombRequest = PendingBombSpawn.GetValueOrDefault();
+                BombSpawnRequest bombRequest = this.pendingBombSpawn.GetValueOrDefault();
                 positions.Add(bombRequest.Position);
                 spawnGem(bombRequest.Position, bombRequest.Color, true);
             }
@@ -84,7 +83,7 @@ namespace Services
             if (currentMatches == null || !currentMatches.Contains(pivotGem))
                 return;
 
-            // Only create a bomb if pivot is part of a straight 4+ line of the SAME color.
+            // Only create a bomb if the pivot is part of a straight 4+ line of the SAME color.
             int longestLine = GetLongestMatchedLineThroughPivot(pivot, pivotGem.MatchColor);
             if (longestLine < 4)
                 return;
@@ -181,7 +180,7 @@ namespace Services
                     }
                 }
 
-                // Destroy everything for this wave (non-bombs in range + the detonating bombs themselves)
+                // Destroy everything for this wave (non-bombs in range and the detonating bombs themselves)
                 foreach (Vector2Int p in toDestroyNow)
                     await destroyAtAsync(p);
 
@@ -216,21 +215,21 @@ namespace Services
 
         private int CountSameColorInDirection(Vector2Int start, Vector2Int direction, GemType color) {
             int count = 0;
-            Vector2Int oivot = start + direction;
+            Vector2Int pivot = start + direction;
 
-            while (oivot.x >= 0 && oivot.x < this.gameBoard.Width && oivot.y >= 0 && oivot.y < this.gameBoard.Height) {
-                Gem g = this.gameBoard.GetGemAt(oivot);
+            while (pivot.x >= 0 && pivot.x < this.gameBoard.Width && pivot.y >= 0 && pivot.y < this.gameBoard.Height) {
+                Gem g = this.gameBoard.GetGemAt(pivot);
                 if (g == null || g.Type == GemType.Bomb || g.MatchColor != color)
                     break;
 
                 count++;
-                oivot += direction;
+                pivot += direction;
             }
 
             return count;
         }
         
-        public void ClearPendingBombs() {
+        private void ClearPendingBombs() {
             this.pendingBombSpawn = null;
         }
     }
diff --git a/Assets/Scripts/Services/GameBoardService.cs b/Assets/Scripts/Services/GameBoardService.cs
index 10ecf16..a4cac9a 100644
--- a/Assets/Scripts/Services/GameBoardService.cs
+++ b/Assets/Scripts/Services/GameBoardService.cs
@@ -9,7 +9,6 @@ using ScriptableObjects;
 using Services.Interfaces;
 using Structs;
 using UnityEngine;
-using UnityEngine.UIElements;
 using Utils;
 using VContainer.Unity;
 using Views;
@@ -30,7 +29,6 @@ namespace Services {
         private readonly ScorePresenter scorePresenter;
         private readonly AudioPresenter audioPresenter;
         
-        private readonly Transform gemsHolder;
         private readonly Transform backgroundHolder;
         #endregion
         
@@ -49,7 +47,6 @@ namespace Services {
                 IScoreService scoreService, 
                 ScorePresenter scorePresenter, 
                 AudioPresenter audioPresenter,
-                Transform gemsHolder,
                 Transform backgroundHolder) {
             this.gameVariables = gameVariables;
             this.gameBoard = gameBoard;
@@ -59,10 +56,12 @@ namespace Services {
             this.scoreService = scoreService;
             this.scorePresenter = scorePresenter;
             this.audioPresenter = audioPresenter;
-            this.gemsHolder = gemsHolder;
             this.backgroundHolder = backgroundHolder;
         }
         
+        /// <summary>
+        /// Global tick. Update replacement of VContainer-managed objects.
+        /// </summary>
         public void Tick() {
             foreach (GemPresenter gemPresenter in gemPresenters) {
                 gemPresenter.Tick(this.gameVariables.gemSpeed);
@@ -71,8 +70,9 @@ namespace Services {
             this.scorePresenter.Tick(this.gameVariables.scoreSpeed);
         }
         
-        //Instantiates background tiles and calls SpawnGems
-        //Uses MatchService.MatchesAt to avoid matching Gems
+        /// <summary>
+        /// Initiates the game board by placing gems randomly.
+        /// </summary>
         public void Setup() {
             List<Gem> gemsToSpawn = new List<Gem>();
             for (int x = 0; x < this.gameBoard.Width; x++)
@@ -91,9 +91,22 @@ namespace Services {
                     gemsToSpawn.Add(SetGemAt(position.ToVector2Int(), gemToUse));
                 }
 
-            SpawnCascade(gemsToSpawn);
+            SpawnCascade(gemsToSpawn).Forget();
         }
         
+        /// <summary>
+        /// Create a Gem object and place it on the GameBoard.
+        /// </summary>
+        /// <param name="position">
+        /// Position on the GameBoard to place the Gem.
+        /// </param>
+        /// <param name="gemType">
+        /// Type of Gem to create.
+        /// </param>
+        /// <param name="isBomb">
+        /// Whether the Gem is a Bomb or not.
+        /// </param>
+        /// <returns></returns>
         private Gem SetGemAt(Vector2Int position, GemType gemType, bool isBomb = false) {
             GemTypeValues gemValue = GemUtils.GetGemValues(gemType, this.gameVariables.gemsPrefabs);
             Gem gem = new Gem(isBomb ? GemType.Bomb : gemType, position, gemValue, gemType);
@@ -102,6 +115,15 @@ namespace Services {
             return gem;
         }
 
+        /// <summary>
+        /// Spawns a GemView object and binds it to the Gem object.
+        /// </summary>
+        /// <param name="gem">
+        /// Gem to bind to the GemView.
+        /// </param>
+        /// <param name="isBomb">
+        /// Whether the Gem is a Bomb or not.
+        /// </param>
         private void SpawnGemGameObject(Gem gem, bool isBomb = false) {
             GemView gemView = this.objectPool.Get(isBomb ? GemType.Bomb : gem.Type, gem.Position, isBomb ? 0 : this.gameVariables.dropHeight);
             gemView.name = "Gem - " + gem.Position.x + ", " + gem.Position.y + ' ' + gem.Type;
@@ -112,6 +134,18 @@ namespace Services {
             this.gemToView.Add(gem, gemView);
         }
 
+        /// <summary>
+        /// Calls SetGemAt and SpawnGemGameObject.
+        /// </summary>
+        /// <param name="position">
+        /// Position on the GameBoard to place the Gem.
+        /// </param>
+        /// <param name="gemType">
+        /// Type of Gem to create.
+        /// </param>
+        /// <param name="isBomb">
+        /// Whether the Gem is a Bomb or not.
+        /// </param>
         private void SetAndSpawnGem(Vector2Int position, GemType gemType, bool isBomb) {
             if(isBomb)
                 ReleaseMatchedGems(position);
@@ -119,13 +153,28 @@ namespace Services {
             SpawnGemGameObject(SetGemAt(position, gemType, isBomb), isBomb);
         }
 
+        /// <summary>
+        /// Spawns a background tile at the given position. Only for setup.
+        /// </summary>
+        /// <param name="position">
+        /// Position on the GameBoard to place the tile.
+        /// </param>
         private void SpawnBackgroundTile(Vector2 position) {
             GameObject backgroundTile = Object.Instantiate(this.gameVariables.bgTilePrefabs, position, Quaternion.identity);
             backgroundTile.transform.SetParent(this.backgroundHolder);
             backgroundTile.name = "BG Tile - " + position.x + ", " + position.y;
         }
         
-        //Listens to InputService OnSwapRequest
+        /// <summary>
+        /// Attempts to swap two gems on the GameBoard.
+        /// </summary>
+        /// <param name="from">
+        /// Original position of the gem to swap.
+        /// </param>
+        /// <param name="to">
+        /// Destination position of the gem to swap.
+        /// </param>
+        /// <returns></returns>
         public async UniTask<bool> TrySwap(Vector2Int from, Vector2Int to) {
             if (this.currentState != GameState.Move) 
                 return false;
@@ -158,10 +207,17 @@ namespace Services {
             return true;
         }
 
-        public async UniTask<bool> TrySwitch(Vector2Int position) {
+        /// <summary>
+        /// For debug purposes. Switches the Gem at the given position to a different GemType.
+        /// </summary>
+        /// <param name="position">
+        /// Position of the Gem to switch.
+        /// </param>
+        /// <returns></returns>
+        public void TrySwitch(Vector2Int position) {
             Gem gem = this.gameBoard.GetGemAt(position);
             if(gem == null)
-                return false;
+                return;
             
             GemType[] normalTypes = Enum.GetValues(typeof(GemType))
                 .Cast<GemType>()
@@ -169,7 +225,7 @@ namespace Services {
                 .ToArray();
 
             if (normalTypes.Length == 0)
-                return false;
+                return;
             
             bool nextIsBomb;
             GemType nextTypeOrMatchColor;
@@ -198,12 +254,20 @@ namespace Services {
                 }
             }
 
-            // Replace both model+view by releasing current and respawning at same position.
+            // Replace both model+view by releasing current and respawning at the same position.
             ReleaseMatchedGems(position);
             SpawnGemGameObject(SetGemAt(position, nextTypeOrMatchColor, nextIsBomb), nextIsBomb);
-            return true;
         }
         
+        /// <summary>
+        /// Helper function for TrySwap. Swaps the Gems in the GameBoard.
+        /// </summary>
+        /// <param name="from">
+        /// Original position of the gem to swap.
+        /// </param>
+        /// <param name="to">
+        /// Destination position of the gem to swap.
+        /// </param>
         private void ApplySwap(Vector2Int from, Vector2Int to) {
             Gem fromGem = this.gameBoard.GetGemAt(from);
             Gem toGem = this.gameBoard.GetGemAt(to);
@@ -216,22 +280,23 @@ namespace Services {
             this.gameBoard.SetGemAt(to, fromGem);
         }
         
+        /// <summary>
+        /// Destroys all matches on the GameBoard.
+        /// </summary>
+        /// <param name="protectedPositions">
+        /// Gems we don't want to instantly destroy.
+        /// </param>
         private async UniTask DestroyMatchesAsync(List<Vector2Int> protectedPositions) {
-            List<Vector2Int> matchPositions = await this.matchService.GetMatchPositionsAsync(protectedPositions);
-            
-            HashSet<Vector2Int> uniqueMatchPositions = new HashSet<Vector2Int>(matchPositions);
-            List<Vector2Int> bombCandidates = uniqueMatchPositions.ToList();
-            List<Vector2Int> initialBombs = await this.bombService.GetInitialBombs(protectedPositions, bombCandidates);
+            HashSet<Vector2Int> matchPositions = await this.matchService.GetMatchPositionsAsync(protectedPositions);
+            List<Vector2Int> initialBombs = await this.bombService.GetInitialBombs(protectedPositions, matchPositions);
 
-            // If a bomb is part of the match, do NOT destroy matching pieces immediately.
-            // Let the bomb's manhattan-distance explosion destroy them in sequence.
             if (initialBombs.Count > 0) {
                 await this.bombService.DetonateChainAsync(
                     initialBombs,
                     DestroyAtAsync,
                     this.gameBoard);
                 
-                foreach (Vector2Int p in uniqueMatchPositions)
+                foreach (Vector2Int p in matchPositions)
                     await DestroyAtAsync(p);
 
                 await UniTask.Delay(this.gameVariables.fillBoardDelayMs);
@@ -242,7 +307,7 @@ namespace Services {
 
             // For audio SFX
             bool willBreakAnyNonBombGem = false;
-            foreach (Vector2Int pos in uniqueMatchPositions) {
+            foreach (Vector2Int pos in matchPositions) {
                 Gem g = this.gameBoard.GetGemAt(pos);
                 if (g != null && g.Type != GemType.Bomb) {
                     willBreakAnyNonBombGem = true;
@@ -253,18 +318,25 @@ namespace Services {
                 this.audioPresenter.OnMatch(this.gameVariables.matchSfx);
 
             // For score counting
-            foreach (Vector2Int pos in uniqueMatchPositions) {
+            foreach (Vector2Int pos in matchPositions) {
                 Gem gem = this.gameBoard.GetGemAt(pos);
                 if (gem == null) continue;
                 if (gem.Type == GemType.Bomb) continue;
 
-                this.scoreService.ScoreCheck(gem.ScoreValue);
+                this.scoreService.AddScore(gem.ScoreValue);
                 ReleaseMatchedGems(pos);
             }
             await UniTask.Delay(this.gameVariables.fillBoardDelayMs);
             await MoveGemsDown();
         }
 
+        /// <summary>
+        /// Destroys the Gem at the given position.
+        /// </summary>
+        /// <param name="pos">
+        /// Position of the Gem to destroy.
+        /// </param>
+        /// <returns></returns>
         private UniTask DestroyAtAsync(Vector2Int pos) {
             Gem gem = this.gameBoard.GetGemAt(pos);
             if (gem == null)
@@ -273,11 +345,17 @@ namespace Services {
             if (gem.Type == GemType.Bomb)
                 this.audioPresenter.OnBombExplosion(this.gameVariables.bombExplodeSfx);
 
-            this.scoreService.ScoreCheck(gem.ScoreValue);
+            this.scoreService.AddScore(gem.ScoreValue);
             ReleaseMatchedGems(pos);
             return UniTask.CompletedTask;
         }
         
+        /// <summary>
+        /// Returns the GemView to the Object Pool and sets the Position in the GameBoard to null.
+        /// </summary>
+        /// <param name="position">
+        /// Position of the Gem to release.
+        /// </param>
         private void ReleaseMatchedGems(Vector2Int position) {
             Gem currentGem = this.gameBoard.GetGemAt(position);
             if (currentGem != null)
@@ -291,11 +369,13 @@ namespace Services {
             }
         }
 
+        /// <summary>
+        /// Moves Gems Down to free spaces.
+        /// </summary>
         private async UniTask MoveGemsDown() {
             List<FallMove> moves = new List<FallMove>();
             while (true) {
                 moves.Clear();
-                // Build moves from a snapshot of the current grid state (no mid-wave chaining)
                 for (int x = 0; x < this.gameBoard.Width; x++)
                 {
                     for (int y = 1; y < this.gameBoard.Height; y++)
@@ -333,6 +413,9 @@ namespace Services {
             await FillBoard();
         }
 
+        /// <summary>
+        /// Fills the GameBoard with gems. If there are resulting matches, process them.
+        /// </summary>
         private async UniTask FillBoard() {
             await RefillBoard();
 
@@ -340,13 +423,15 @@ namespace Services {
             if (this.matchService.CurrentMatches.Count > 0) {
                 await UniTask.Delay(this.gameVariables.fillBoardDelayMs);
 
-                // In cascades, there is no "creating slot" bomb protection.
                 await DestroyMatchesAsync(new List<Vector2Int>());
             } else {
                 this.currentState = GameState.Move;
             }
         }
 
+        /// <summary>
+        /// Refills the GameBoard with gems.
+        /// </summary>
         private async UniTask RefillBoard() {
             List<Gem> gemsToSpawn = new List<Gem>();
             for (int x = 0; x < this.gameBoard.Width; x++)
@@ -358,13 +443,13 @@ namespace Services {
                         GemType gemToUse = RandomUtils.RandomGemType();
 
                         int iterations = 0;
-                        while (this.matchService.MatchesAt(new Vector2Int(x, y), (GemType)gemToUse) && iterations < 100)
+                        while (this.matchService.MatchesAt(new Vector2Int(x, y), gemToUse) && iterations < 100)
                         {
                             gemToUse = RandomUtils.RandomGemType();
                             iterations++;
                         }
                         
-                        gemsToSpawn.Add(SetGemAt(new Vector2Int(x,y), (GemType)gemToUse));
+                        gemsToSpawn.Add(SetGemAt(new Vector2Int(x,y), gemToUse));
                     }
                 }
             }
@@ -372,6 +457,12 @@ namespace Services {
             await SpawnCascade(gemsToSpawn);
         }
 
+        /// <summary>
+        /// Spawns gems in cascade.
+        /// </summary>
+        /// <param name="gemsToSpawn">
+        /// List of gems to spawn.
+        /// </param>
         private async UniTask SpawnCascade(List<Gem> gemsToSpawn)
         {
             List<IGrouping<int, Gem>> groups = gemsToSpawn
@@ -392,6 +483,12 @@ namespace Services {
                 this.currentState = GameState.Move;
         }
         
+        /// <summary>
+        /// Removes the Presenter for the given GemView from the list to avoid calling its Tick method.
+        /// </summary>
+        /// <param name="gemView">
+        /// GemView to remove from the List of presenters.
+        /// </param>
         private void RemovePresenterFor(GemView gemView) {
             if (gemView is null) {
                 return;
diff --git a/Assets/Scripts/Services/InputService.cs b/Assets/Scripts/Services/InputService.cs
index f6295dc..1bbf735 100644
--- a/Assets/Scripts/Services/InputService.cs
+++ b/Assets/Scripts/Services/InputService.cs
@@ -100,7 +100,7 @@ namespace Services {
                          || touch.phase == TouchPhase.Moved
                          || touch.phase == TouchPhase.Stationary;
 
-                // Ended/Canceled => not down (we still report position)
+                // Ended/Canceled => not down (we still report the position)
                 if (touch.phase == TouchPhase.Ended || touch.phase == TouchPhase.Canceled)
                     isDown = false;
 
diff --git a/Assets/Scripts/Services/Interfaces/IBombService.cs b/Assets/Scripts/Services/Interfaces/IBombService.cs
index be590a4..8283f4c 100644
--- a/Assets/Scripts/Services/Interfaces/IBombService.cs
+++ b/Assets/Scripts/Services/Interfaces/IBombService.cs
@@ -10,14 +10,51 @@ using UnityEngine;
 namespace Services.Interfaces
 {
     public interface IBombService {
-        public BombSpawnRequest? PendingBombSpawn { get; }
-        
+        /// <summary>
+        /// Caches last swap action.
+        /// </summary>
+        /// <param name="from">
+        /// Original location of the gem.
+        /// </param>
+        /// <param name="to">
+        /// Destination location of the gem.
+        /// </param>
         void SetLastSwap(Vector2Int from, Vector2Int to);
 
+        /// <summary>
+        /// Try to spawn a bomb at the last swap location.
+        /// </summary>
+        /// <param name="currentMatches">
+        /// List of current matches.
+        /// </param>
         void DetectBombSpawnFromLastSwap(HashSet<Gem> currentMatches);
         List<Vector2Int> ApplyPendingBombSpawns(Action<Vector2Int, GemType, bool> spawnGem);
-        UniTask<List<Vector2Int>> GetInitialBombs(List<Vector2Int> protectedPositions, List<Vector2Int> bombCandidates);
         
+        /// <summary>
+        /// Get a List of bombs that we will detonate.
+        /// </summary>
+        /// <param name="protectedPositions">
+        /// Protected positions, bombs that we don't want to destroy.
+        /// </param>
+        /// <param name="bombCandidates">
+        /// Possible bombs.
+        /// </param>
+        /// <returns></returns>
+        UniTask<List<Vector2Int>> GetInitialBombs(List<Vector2Int> protectedPositions, HashSet<Vector2Int> bombCandidates);
+        
+        /// <summary>
+        /// Detonate the bomb(s) part of the match. If there are other bombs within the radius, they will be detonated too sequentially.
+        /// </summary>
+        /// <param name="initialBombs">
+        /// List of bombs to detonate.
+        /// </param>
+        /// <param name="destroyAtAsync">
+        /// Destroy function reference.
+        /// </param>
+        /// <param name="gameBoard">
+        /// Gameboard reference.
+        /// </param>
+        /// <returns></returns>
         UniTask DetonateChainAsync(
             IReadOnlyList<Vector2Int> initialBombs,
             Func<Vector2Int, UniTask> destroyAtAsync,
diff --git a/Assets/Scripts/Services/Interfaces/IGameBoardService.cs b/Assets/Scripts/Services/Interfaces/IGameBoardService.cs
index a35eab8..3518681 100644
--- a/Assets/Scripts/Services/Interfaces/IGameBoardService.cs
+++ b/Assets/Scripts/Services/Interfaces/IGameBoardService.cs
@@ -6,6 +6,6 @@ namespace Services.Interfaces {
         void Setup();
         
         UniTask<bool> TrySwap(Vector2Int from, Vector2Int to);
-        UniTask<bool> TrySwitch(Vector2Int position);
+        void TrySwitch(Vector2Int position);
     }
 }
\ No newline at end of file
diff --git a/Assets/Scripts/Services/Interfaces/IMatchService.cs b/Assets/Scripts/Services/Interfaces/IMatchService.cs
index 4873357..94ed3f6 100644
--- a/Assets/Scripts/Services/Interfaces/IMatchService.cs
+++ b/Assets/Scripts/Services/Interfaces/IMatchService.cs
@@ -7,7 +7,25 @@ using Structs;
 namespace Services.Interfaces {
     public interface IMatchService {
         HashSet<Gem> CurrentMatches { get; }
-        UniTask<List<Vector2Int>> GetMatchPositionsAsync(List<Vector2Int> protectedPositions);
+        /// <summary>
+        /// Get positions of all matches that are not protected.
+        /// </summary>
+        /// <param name="protectedPositions">
+        /// Protected positions, bombs that we don't want to destroy.
+        /// </param>
+        /// <returns></returns>
+        UniTask<HashSet<Vector2Int>> GetMatchPositionsAsync(List<Vector2Int> protectedPositions);
+        
+        /// <summary>
+        /// Checks if there are any matches at the given position and type.
+        /// </summary>
+        /// <param name="positionToCheck">
+        /// Position on the gameBoard to check.
+        /// </param>
+        /// <param name="gemTypeToCheck">
+        /// Type of gem to check.
+        /// </param>
+        /// <returns></returns>
         bool MatchesAt(Vector2Int positionToCheck, GemType gemTypeToCheck);
         void FindAllMatches();
     }
diff --git a/Assets/Scripts/Services/Interfaces/IScoreService.cs b/Assets/Scripts/Services/Interfaces/IScoreService.cs
index 401de0d..9c534ae 100644
--- a/Assets/Scripts/Services/Interfaces/IScoreService.cs
+++ b/Assets/Scripts/Services/Interfaces/IScoreService.cs
@@ -4,6 +4,6 @@ namespace Services.Interfaces {
     public interface IScoreService {
         event Action<int> OnScoreChanged;
         int Score { get; }
-        void ScoreCheck(int value);
+        void AddScore(int value);
     }
 }
\ No newline at end of file
diff --git a/Assets/Scripts/Services/MatchService.cs b/Assets/Scripts/Services/MatchService.cs
index 7c6a6f6..8ce7efa 100644
--- a/Assets/Scripts/Services/MatchService.cs
+++ b/Assets/Scripts/Services/MatchService.cs
@@ -49,9 +49,9 @@ namespace Services {
 
             return false;
         }
-
-        public UniTask<List<Vector2Int>> GetMatchPositionsAsync(List<Vector2Int> protectedPositions) {
-            List<Vector2Int> matchPositions = new List<Vector2Int>(this.currentMatches.Count);
+        
+        public UniTask<HashSet<Vector2Int>> GetMatchPositionsAsync(List<Vector2Int> protectedPositions) {
+            HashSet<Vector2Int> matchPositions = new HashSet<Vector2Int>();
             List<Gem> matches = this.currentMatches.ToList();
             for (int i = 0; i < matches.Count; i++) {
                 Gem match = matches[i];
diff --git a/Assets/Scripts/Services/ScoreService.cs b/Assets/Scripts/Services/ScoreService.cs
index 35a20c7..af786cc 100644
--- a/Assets/Scripts/Services/ScoreService.cs
+++ b/Assets/Scripts/Services/ScoreService.cs
@@ -7,7 +7,7 @@ namespace Services {
         private int score = 0;
         public int Score => this.score;
         public event Action<int> OnScoreChanged;
-        public void ScoreCheck(int value) {
+        public void AddScore(int value) {
             this.score += value;
             
             OnScoreChanged?.Invoke(this.score);