Hex Grid System Implementation

Assets/Materials/GridWhite.mat

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     - _MetallicGlossMap:

Assets/Materials/HexTile.mat

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Assets/Materials/HexTile.mat.meta

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Assets/Prefabs/GridSystemVisualSingle.prefab

@@ -24,6 +24,7 @@ Transform:
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@@ -31,7 +32,6 @@ Transform:
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@@ -71,13 +71,13 @@ Transform:
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Assets/Prefabs/Unit.prefab

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Assets/Scenes/GameSceneHex.unity.meta

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Assets/Scripts/Grid/GridObject.cs

@@ -3,13 +3,13 @@ using System.Linq;
 
 namespace Grid {
     public class GridObject {
-        public GridObject(GridSystem<GridObject> gridSystem, GridPosition gridPosition) {
-            GridSystem = gridSystem;
+        public GridObject(GridSystemHex<GridObject> gridSystemHex, GridPosition gridPosition) {
+            GridSystemHex = gridSystemHex;
             GridPosition = gridPosition;
             UnitList = new();
         }
 
-        private GridSystem<GridObject> GridSystem { get; }
+        private GridSystemHex<GridObject> GridSystemHex { get; }
         private GridPosition GridPosition { get; }
         public List<Unit> UnitList { get; }
         public IInteractable Interactable { get; set; }

Assets/Scripts/Grid/GridSystemHex.cs

@@ -3,11 +3,12 @@ using UnityEngine;
 using Object = UnityEngine.Object;
 
 namespace Grid {
-    public class GridSystem<TGridObject> {
+    public class GridSystemHex<TGridObject> {
+        private const float hexVerticalOffsetMultiplier = .75f;
         private readonly float cellSize;
         private readonly TGridObject[,] gridObjectArray;
 
-        public GridSystem(int width, int height, float cellSize, Func<GridSystem<TGridObject>, GridPosition, TGridObject> createGridObject) {
+        public GridSystemHex(int width, int height, float cellSize, Func<GridSystemHex<TGridObject>, GridPosition, TGridObject> createGridObject) {
             Width = width;
             Height = height;
             this.cellSize = cellSize;
@@ -23,9 +24,15 @@ namespace Grid {
         public int Height { get; }
         public int Width { get; }
 
-        public Vector3 GetWorldPosition(GridPosition gridPosition) => new Vector3(gridPosition.X, 0, gridPosition.Z) * cellSize;
+        public Vector3 GetWorldPosition(GridPosition gridPosition) {
+            return new Vector3(gridPosition.X, 0, 0) * cellSize + cellSize * hexVerticalOffsetMultiplier * new Vector3(0, 0, gridPosition.Z) + (gridPosition.Z % 2 == 1 ? cellSize * .5f * Vector3.right : Vector3.zero);
+        }
 
-        public GridPosition GetGridPosition(Vector3 worldPosition) => new(Mathf.RoundToInt(worldPosition.x / cellSize), Mathf.RoundToInt(worldPosition.z / cellSize));
+        public GridPosition GetGridPosition(Vector3 worldPosition) {
+            int x = Mathf.RoundToInt(worldPosition.x / cellSize);
+            int z = Mathf.RoundToInt(worldPosition.z / cellSize);
+            return new(x, z);
+        }
 
         public void CreateDebugObjects(Transform debugPrefab) {
             for (int x = 0; x < Width; x++) {

Assets/Scripts/Grid/GridSystemVisual.cs

@@ -49,6 +49,12 @@ namespace Grid {
             UnitActionSystem.Instance.OnSelectedActionChanged += UnitActionSystem_OnSelectedActionChanged;
             LevelGrid.Instance.OnAnyUnitMovedGridPosition += LevelGrid_OnAnyUnitMovedGridPosition;
             UpdateGridVisual();
+
+            for (int x = 0; x < LevelGrid.Instance.GetWidth(); x++) {
+                for (int z = 0; z < LevelGrid.Instance.GetHeight(); z++) {
+                    gridSystemVisualSingleArray[x, z].Show(GetGridVisualTypeMaterial(GridVisualType.White));
+                }
+            }
         }
 
         private void LevelGrid_OnAnyUnitMovedGridPosition(object sender, EventArgs e) => UpdateGridVisual();

Assets/Scripts/Grid/LevelGrid.cs

@@ -12,7 +12,7 @@ namespace Grid {
         [SerializeField] private int height = 20;
         [SerializeField] private float cellSize = 2f;
 
-        private GridSystem<GridObject> gridSystem;
+        private GridSystemHex<GridObject> gridSystemHex;
 
         public static LevelGrid Instance { get; private set; }
 
@@ -24,23 +24,23 @@ namespace Grid {
             }
 
             Instance = this;
-            gridSystem = new(width, height, cellSize, (g, gridPosition) => new(g, gridPosition));
+            gridSystemHex = new(width, height, cellSize, (g, gridPosition) => new(g, gridPosition));
         }
 
         private void Start() => Pathfinding.Instance.Setup(width, height, cellSize);
 
         public event EventHandler OnAnyUnitMovedGridPosition;
 
-        public void AddUnitAtGridPosition(GridPosition gridPosition, Unit unit) => gridSystem.GetGridObject(gridPosition).UnitList.Add(unit);
+        public void AddUnitAtGridPosition(GridPosition gridPosition, Unit unit) => gridSystemHex.GetGridObject(gridPosition).UnitList.Add(unit);
 
-        public List<Unit> GetUnitListAtGridPosition(GridPosition gridPosition) => gridSystem.GetGridObject(gridPosition).UnitList;
-        public void RemoveUnitAtGridPosition(GridPosition gridPosition, Unit unit) => gridSystem.GetGridObject(gridPosition).UnitList.Remove(unit);
+        public List<Unit> GetUnitListAtGridPosition(GridPosition gridPosition) => gridSystemHex.GetGridObject(gridPosition).UnitList;
+        public void RemoveUnitAtGridPosition(GridPosition gridPosition, Unit unit) => gridSystemHex.GetGridObject(gridPosition).UnitList.Remove(unit);
 
-        public GridPosition GetGridPosition(Vector3 worldPosition) => gridSystem.GetGridPosition(worldPosition);
-        public Vector3 GetWorldPosition(GridPosition gridPosition) => gridSystem.GetWorldPosition(gridPosition);
-        public bool IsValidGridPosition(GridPosition gridPosition) => gridSystem.IsValidGridPosition(gridPosition);
-        public int GetWidth() => gridSystem.Width;
-        public int GetHeight() => gridSystem.Height;
+        public GridPosition GetGridPosition(Vector3 worldPosition) => gridSystemHex.GetGridPosition(worldPosition);
+        public Vector3 GetWorldPosition(GridPosition gridPosition) => gridSystemHex.GetWorldPosition(gridPosition);
+        public bool IsValidGridPosition(GridPosition gridPosition) => gridSystemHex.IsValidGridPosition(gridPosition);
+        public int GetWidth() => gridSystemHex.Width;
+        public int GetHeight() => gridSystemHex.Height;
 
         public void UnitMovedGridPosition(Unit unit, GridPosition fromGridPosition, GridPosition toGridPosition) {
             RemoveUnitAtGridPosition(fromGridPosition, unit);
@@ -48,9 +48,9 @@ namespace Grid {
             OnAnyUnitMovedGridPosition?.Invoke(this, EventArgs.Empty);
         }
 
-        public bool HasAnyUnitOnGridPosition(GridPosition gridPosition) => gridSystem.GetGridObject(gridPosition).UnitList.Count > 0;
-        public Unit GetUnitAtGridPosition(GridPosition gridPosition) => gridSystem.GetGridObject(gridPosition).GetUnit();
-        public IInteractable GetInteractableAtGridPosition(GridPosition gridPosition) => gridSystem.GetGridObject(gridPosition).Interactable;
-        public void SetInteractableAtGridPosition(GridPosition gridPosition, IInteractable interactable) => gridSystem.GetGridObject(gridPosition).Interactable = interactable;
+        public bool HasAnyUnitOnGridPosition(GridPosition gridPosition) => gridSystemHex.GetGridObject(gridPosition).UnitList.Count > 0;
+        public Unit GetUnitAtGridPosition(GridPosition gridPosition) => gridSystemHex.GetGridObject(gridPosition).GetUnit();
+        public IInteractable GetInteractableAtGridPosition(GridPosition gridPosition) => gridSystemHex.GetGridObject(gridPosition).Interactable;
+        public void SetInteractableAtGridPosition(GridPosition gridPosition, IInteractable interactable) => gridSystemHex.GetGridObject(gridPosition).Interactable = interactable;
     }
 }

Assets/Scripts/Pathfinding.cs

@@ -12,7 +12,7 @@ public class Pathfinding : MonoBehaviour {
     [SerializeField] private Transform gridDebugObjectPrefab;
     [SerializeField] private LayerMask obstaclesLayerMask;
     public static Pathfinding Instance { get; private set; }
-    private GridSystem<PathNode> GridSystem { get; set; }
+    private GridSystemHex<PathNode> GridSystemHex { get; set; }
 
     private int Width { get; set; }
     private int Height { get; set; }
@@ -32,7 +32,7 @@ public class Pathfinding : MonoBehaviour {
         Width = width;
         Height = height;
         CellSize = cellSize;
-        GridSystem = new(width, height, cellSize, (_, gridPosition) => new(gridPosition));
+        GridSystemHex = new(width, height, cellSize, (_, gridPosition) => new(gridPosition));
         // GridSystem.CreateDebugObjects(gridDebugObjectPrefab);
 
         for (int x = 0; x < Width; x++) {
@@ -46,21 +46,21 @@ public class Pathfinding : MonoBehaviour {
         }
     }
 
-    public bool IsWalkableGridPosition(GridPosition gridPosition) => GridSystem.GetGridObject(gridPosition).IsWalkable;
+    public bool IsWalkableGridPosition(GridPosition gridPosition) => GridSystemHex.GetGridObject(gridPosition).IsWalkable;
 
-    public void SetWalkableGridPosition(GridPosition gridPosition, bool isWalkable) => GridSystem.GetGridObject(gridPosition).IsWalkable = isWalkable;
+    public void SetWalkableGridPosition(GridPosition gridPosition, bool isWalkable) => GridSystemHex.GetGridObject(gridPosition).IsWalkable = isWalkable;
 
     public List<GridPosition> FindPath(GridPosition startGridPosition, GridPosition endGridPosition, out int pathLength) {
         List<PathNode> openList = new();
         List<PathNode> closedList = new();
 
-        PathNode startNode = GridSystem.GetGridObject(startGridPosition);
-        PathNode endNode = GridSystem.GetGridObject(endGridPosition);
+        PathNode startNode = GridSystemHex.GetGridObject(startGridPosition);
+        PathNode endNode = GridSystemHex.GetGridObject(endGridPosition);
         openList.Add(startNode);
 
-        for (int x = 0; x < GridSystem.Width; x++) {
-            for (int z = 0; z < GridSystem.Height; z++) {
-                PathNode pathNode = GridSystem.GetGridObject(new(x, z));
+        for (int x = 0; x < GridSystemHex.Width; x++) {
+            for (int z = 0; z < GridSystemHex.Height; z++) {
+                PathNode pathNode = GridSystemHex.GetGridObject(new(x, z));
                 pathNode.GCost = int.MaxValue;
                 pathNode.HCost = 0;
                 pathNode.CameFromPathNode = null;
@@ -122,22 +122,22 @@ public class Pathfinding : MonoBehaviour {
         if (gridPosition.X - 1 >= 0) {
             neighbourList.Add(GetNode(gridPosition.X - 1, gridPosition.Z + 0)); //Left
             if (gridPosition.Z - 1 >= 0) neighbourList.Add(GetNode(gridPosition.X - 1, gridPosition.Z - 1)); //LeftDown
-            if (gridPosition.Z < GridSystem.Height) neighbourList.Add(GetNode(gridPosition.X - 1, gridPosition.Z + 1)); //LeftUp
+            if (gridPosition.Z < GridSystemHex.Height) neighbourList.Add(GetNode(gridPosition.X - 1, gridPosition.Z + 1)); //LeftUp
         }
 
-        if (gridPosition.X + 1 < GridSystem.Width) {
+        if (gridPosition.X + 1 < GridSystemHex.Width) {
             neighbourList.Add(GetNode(gridPosition.X + 1, gridPosition.Z + 0)); //Right
             if (gridPosition.Z - 1 >= 0) neighbourList.Add(GetNode(gridPosition.X + 1, gridPosition.Z - 1)); //RightDown
-            if (gridPosition.Z + 1 < GridSystem.Height) neighbourList.Add(GetNode(gridPosition.X + 1, gridPosition.Z + 1)); //RightUp
+            if (gridPosition.Z + 1 < GridSystemHex.Height) neighbourList.Add(GetNode(gridPosition.X + 1, gridPosition.Z + 1)); //RightUp
         }
 
         if (gridPosition.Z - 1 >= 0) neighbourList.Add(GetNode(gridPosition.X - 0, gridPosition.Z - 1)); //Down
-        if (gridPosition.Z + 1 < GridSystem.Height) neighbourList.Add(GetNode(gridPosition.X - 0, gridPosition.Z + 1)); //Up
+        if (gridPosition.Z + 1 < GridSystemHex.Height) neighbourList.Add(GetNode(gridPosition.X - 0, gridPosition.Z + 1)); //Up
 
         return neighbourList;
     }
 
-    private PathNode GetNode(int x, int z) => GridSystem.GetGridObject(new(x, z));
+    private PathNode GetNode(int x, int z) => GridSystemHex.GetGridObject(new(x, z));
 
     private static List<GridPosition> CalculatePath(PathNode endNode) {
         List<PathNode> pathNodeList = new() { endNode };

Assets/Scripts/Unit.cs

@@ -2,12 +2,14 @@ using System;
 using Actions;
 using Grid;
 using UnityEngine;
+using UnityEngine.Serialization;
 
 public class Unit : MonoBehaviour {
-    private const int ACTION_POINTS_MAX = 10;
+    [FormerlySerializedAs("ACTION_POINTS_MAX")] [SerializeField]
+    private int actionPointsMax = 2;
 
     [SerializeField] private bool isEnemy;
-    private int actionPoints = ACTION_POINTS_MAX;
+    private int actionPoints;
 
     public GridPosition GridPosition { get; private set; }
     public BaseAction[] BaseActionArray { get; private set; }
@@ -26,6 +28,7 @@ public class Unit : MonoBehaviour {
     private void Awake() {
         BaseActionArray = GetComponents<BaseAction>();
         HealthSystem = GetComponent<HealthSystem>();
+        actionPoints = actionPointsMax;
     }
 
     private void Start() {
@@ -65,7 +68,7 @@ public class Unit : MonoBehaviour {
 
     private void TurnSystem_OnTurnChanged(object sender, EventArgs e) {
         if (IsEnemy ^ TurnSystem.Instance.IsPlayerTurn || TurnSystem.Instance.IsPlayerTurn ^ IsEnemy) {
-            ActionPoints = ACTION_POINTS_MAX;
+            ActionPoints = actionPointsMax;
         }
     }
 

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