/**
    *** Creates dijkstra distance field
    *** Also finds the maximum value in dijkstra field, later to be used for dijkstra distance field visualization
    **/
    private void Start()
    {
        var start = Time.realtimeSinceStartup;

        dijkstraField = Pathfinding.CreateDijkstraField(Grid.Cols, Grid.Rows, Grid.GridContent);
        Debug.Log($"It takes: {Time.realtimeSinceStartup - start} seconds");
        foreach (var i in dijkstraField)
        {
            if (i > dijkstraMax && i < Mathf.Infinity)
            {
                dijkstraMax = i;
            }
        }
        SetupPedestrianDensityField();
    }