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[i] = Instantiate <HexCell>(cellPrefab);
cell.transform.SetParent(transform, false);
cell.transform.localPosition = position;
cell.gameObject.name = "cell " + i;
cell.coordinates = HexCoordinates.FromOffsetCoordinates(x, z);
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();
label.gameObject.name = "cellUI " + i;
}