/*
* Initialize a single cell at a given offset from the origin (x, z) following these steps:
* - Instantiate a new HexCell
* - Set this grid as the HexCell's parent
* - Position the cell's center:
* - Shift each x position by the minimum radius of a cell (this are "pointy" hexes)
* - Shift each Z position by the maximum radius of a cell _plus_ half that shift again (1.5 * MAX_R)
* - In every odd row, shift each x position by an additional minimum radius of a cell
*/
private void InitHexCell(int x, int z, int index)
{
HexCell cell = this.hexCells[index] = Instantiate <HexCell>(this.hexCellPrefab);
cell.transform.SetParent(this.transform, false);
cell.coordinates = HexCoordinates.FromOffset(x, z);
cell.transform.localPosition = new Vector3(
(x + (z % 2 * 0.5f)) * (HexUtils.MIN_R * 2f),
0f,
z * (HexUtils.MAX_R * 1.5f)
);
}