row & col étant des int


	public void AssignCardinalNeighborsDirect()
    {
        for (int y = 0; y < m_Rows; y++)
            for (int x = 0; x < m_Cols; x++)
            {
                var s = GetFromListByXY(x, y);
                if (!s) continue;

                s.m_NeighbourRight = GetFromListByXY(x + 1, y);
                s.m_NeighbourLeft = GetFromListByXY(x - 1, y);
                s.m_NeighbourUp = GetFromListByXY(x, y + 1);
                s.m_NeighbourDown = GetFromListByXY(x, y - 1);

                s.SetNameAndNeighbours();
            }
    }

--------------------------------------------

    private int IndexOf(int x, int y) => y * m_Cols + x;

    private InventorySlot GetFromListByXY(int x, int y)
    {
        if (x < 0 || x >= m_Cols || y < 0 || y >= m_Rows) return null;
        int i = IndexOf(x, y);
        if (i < 0 || i >= allInventorySlot.Count) return null;
        return allInventorySlot[i];
    }