private void _populate()
{
FillObstaclesWithArray(GetFunPlayField());
graph = GraphGenerator.FloodFill(world: this, startPosition: new Vector2D(50f, 50f));
GraphGenerator.SetNearestItems(this);
Lion l1 = new Lion(new Vector2D(60f, 60f), this);
Lion l2 = new Lion(new Vector2D(120, 100f), this);
Gazelle g1 = new Gazelle(new Vector2D(200f, 200f), this);
Gazelle g2 = new Gazelle(new Vector2D(250f, 250f), this);
Gazelle g3 = new Gazelle(new Vector2D(300f, 300f), this);
Entities.AddRange(new List <MovingEntity>()
{
g1,
l1,
g2,
g3,
l2
});
}