protected override bool CanMove(Ocean aquarium, Point move)
{
var fishAtLocation = aquarium.GetFishAt(Location.X + move.X, Location.X + move.Y);
return(fishAtLocation == this || fishAtLocation == null ||
fishAtLocation is SmallFish);
}
static void Main(string[] args)
{
var ocean = new Ocean();
var random = new Random();
var fishes = Enumerable.Range(0, 20)
.Select(_ => new Point(random.Next(80), random.Next(25)))
.Select(pt => random.Next(2) == 0
? (Fish) new BigFish(pt)
: new SmallFish(pt)).ToArray();
foreach (var fish in fishes)
{
ocean.AddFish(fish);
}
while (true)
{
Console.Clear();
ocean.Render(f =>
{
Console.SetCursorPosition(f.Location.X, f.Location.Y);
Console.Write(f.ToString());
});
foreach (var fish in fishes)
{
fish.Move(ocean);
}
Thread.Sleep(TimeSpan.FromSeconds(1));
}
}
protected override void MoveTo(Ocean ocean, Point location)
{
var fishAtLocation = ocean.GetFishAt(location.X, location.Y);
if (fishAtLocation != null)
{
ocean.Remove(fishAtLocation);
}
ocean.MoveTo(this, location);
}
public void Move(Ocean ocean)
{
var potentialMoves = (from x in Enumerable.Range(-1, 3)
from y in Enumerable.Range(-1, 3)
let m = new Point(x, y)
where ocean.InBounds(Location.X + m.X, Location.Y + m.Y)
where CanMove(ocean, m)
select m).ToArray();
var move = potentialMoves[Random.Next(potentialMoves.Length)];
var newLocation = new Point(Location.X + move.X, Location.Y + move.Y);
MoveTo(ocean, newLocation);
Location = newLocation;
}
protected override void MoveTo(Ocean ocean, Point location)
{
ocean.MoveTo(this, location);
}
protected abstract bool CanMove(Ocean aquarium, Point move);
protected abstract void MoveTo(Ocean ocean, Point newLocation);
