Creating a building on a Hexagon Grid.

Questions & Answers
1

To start off I followed this tutorial: Hex Map 1

Now I have been meddling with the code and I am trying to instantiate one building to the center of the a hexagon. The problem is that I am unsure how to send the hex position to my building creation script, or call the building creation script in the script where the grid is maintained.

The code (HexMapEditor.cs):

    public List<GameObject> BuildingList = new List<GameObject>();

    public HexGrid hexGrid;

    private Color activeColor;
    private int activeBuilding;

	void Awake () {
		
        SelectBuilding(0);
	}

    void Update () {
		if (
			Input.GetMouseButtonUp(0) &&
			!EventSystem.current.IsPointerOverGameObject()
		) {
			HandleInput();
		}
	}

	void HandleInput () {
		Ray inputRay = Camera.main.ScreenPointToRay(Input.mousePosition);
		RaycastHit hit;
		if (Physics.Raycast(inputRay, out hit)) {
            SelectColor(0);
            hexGrid.CreateBuilding(hit.point, activeColor);
        }
	}
    
    public void SelectBuilding(int index)
    {
        activeBuilding = index;
    }
	}
    public void BuildingCreation(Vector3 Bpos)
    {
        Instantiate(BuildingList[activeBuilding], Bpos, Quaternion.identity);
    }

The code (HexGrid.cs):

public Color defaultColor = Color.white;

public HexCell cellPrefab;
public Text cellLabelPrefab;  

HexCell[] cells;

Canvas gridCanvas;
HexMesh hexMesh;
HexMapEditor Building;

void Awake () {

	gridCanvas = GetComponentInChildren<Canvas>();
	hexMesh = GetComponentInChildren<HexMesh>();

	cells = new HexCell[height * width];

	for (int z = 0, i = 0; z < height; z++) {
		for (int x = 0; x < width; x++) {
			CreateCell(x, z, i++);
		}
	}
}

void Start () {
	hexMesh.Triangulate(cells);
}

private void OnTriggerEnter(Collider other)
{
Destroy(other.gameObject);
}

public void CreateBuilding(Vector3 position, Color color)
{
    position = transform.InverseTransformPoint(position);
    HexCoordinates coordinates = HexCoordinates.FromPosition(position);
    int index = coordinates.X + coordinates.Z * width + coordinates.Z / 2;
    HexCell cell = cells[index];
    cell.color = color;
    hexMesh.Triangulate(cells);
    Building.BuildingCreation(position);

    for (int i = 0; i < cells.Length; i++)
    {

    }
}

void CreateCell (int x, int z, int i) {
	Vector3 position;
	position.x = (x + z * 0.5f - z / 2) * (HexMetrics.innerRadius * 2f);
	position.y = 0f;
	position.z = z * (HexMetrics.outerRadius * 1.5f);

	HexCell cell = cells *= Instantiate<HexCell>(cellPrefab);*

  •   cell.transform.SetParent(transform, false);*

  •   cell.transform.localPosition = position;*

  •   cell.coordinates = HexCoordinates.FromOffsetCoordinates(x, z);*

  •   cell.color = defaultColor;*

if (x > 0) {

  •   	cell.SetNeighbor(HexDirection.W, cells[i - 1]);*

  •   }*

  •   if (z > 0) {*

  •   	if ((z & 1) == 0) {*

  •   		cell.SetNeighbor(HexDirection.SE, cells[i - width]);*

  •   		if (x > 0) {*

  •   			cell.SetNeighbor(HexDirection.SW, cells[i - width - 1]);*

  •   		}*

  •   	}*

  •   	else {*

  •   		cell.SetNeighbor(HexDirection.SW, cells[i - width]);*

  •   		if (x < width - 1) {*

  •   			cell.SetNeighbor(HexDirection.SE, cells[i - width + 1]);*

  •   		}*

  •   	}*

  •   }*

  •   Text label = Instantiate<Text>(cellLabelPrefab);*

  •   label.rectTransform.SetParent(gridCanvas.transform, false);*

  •   label.rectTransform.anchoredPosition =*

  •   	new Vector2(position.x, position.z);*

  •   label.text = cell.coordinates.ToStringOnSeparateLines();*
  • }*
    Please let met know if more code or information in required.
2

Okey so after being stuck on this for at least two hours, I find the answer 15 minutes after I finally post a question here.

The answer was to create a Vector3 in the HexGrid.cs put the cell.transform.position in this vector like this:

BuildingPos = cell.transform.position;

And finally call the function in the HexMapEditor.cs script like so: BuildingCreation(hexGrid.BuildingPos);