private MainViewModel BuildMainDataContext()
{
var width = Properties.Settings.Default.EcosystemWidth;
var height = Properties.Settings.Default.EcosystemHeight;
// the event aggregator might be used by view models to inform of changes
var eventaggregator = new EventAggregator();
var habitats = new Habitat[width, height];
var habitatViewModels = new List<List<HabitatViewModel>>();
for (var x = 0; x < width; x++)
{
habitatViewModels.Add(new List<HabitatViewModel>());
for (var y = 0; y < height; y++)
{
// initially set each habitat to have an unknown environment and no organism
var environment = new Environment(Terrain.Unknown, false);
var environmentViewModel = new EnvironmentViewModel(environment, eventaggregator);
var organismViewModel = new OrganismViewModel(null, eventaggregator);
var habitat = new Habitat(environment, null);
var habitatViewModel = new HabitatViewModel(habitat, environmentViewModel, organismViewModel, eventaggregator);
habitats[x, y] = habitat;
habitatViewModels[x].Add(habitatViewModel);
}
}
var ecosystem = new Ecosystem(habitats, new Dictionary<Organism, Habitat>());
var ecosystemViewModel = new EcosystemViewModel(ecosystem, habitatViewModels, eventaggregator);
this.InitialiseTerrain(ecosystem);
var initialOrganismCoordinates = this.InitialiseOrganisms(ecosystem);
// TODO: do this in InitialiseOrganisms
// boshed together so the organisms are visible before ecosystem is switched on the first time
foreach (var organismCoordinate in initialOrganismCoordinates)
{
habitatViewModels[organismCoordinate.X][organismCoordinate.Y].RefreshOrganismViewModel();
}
// TODO: setting up the summary view after organisms initialised... how to handle this nicely
var organismViewModels = habitatViewModels.SelectMany(habitatViewModel => habitatViewModel)
.Select(habitatViewModel => habitatViewModel.OrganismViewModel)
.Where(organismViewModel => organismViewModel.HasOrganism).ToList();
var organismSummaryViewModel = new OrganismSummaryViewModel(ecosystem, organismViewModels, eventaggregator);
var main = new Main(ecosystem);
var mainViewModel = new MainViewModel(main, ecosystemViewModel, organismSummaryViewModel, eventaggregator);
return mainViewModel;
}
public Ecosystem(Habitat[,] habitats, Dictionary<Organism, Habitat> organismHabitats)
{
this.Habitats = habitats;
this.OrganismHabitats = organismHabitats;
this.HealthBias = 1;
this.HabitatCoordinates = new Dictionary<Habitat, Coordinates>();
for (var i = 0; i < this.Width; i++)
{
for (var j = 0; j < this.Height; j++)
{
this.HabitatCoordinates.Add(this.Habitats[i, j], new Coordinates(i, j));
}
}
this.PheromoneDepositPerTurn = 0.01;
this.PheromoneFadePerTurn = 0.001;
}
private static Habitat[,] GenerateBaseHabitats(int width, int height)
{
var habitats = new Habitat[width,height];
for (var x = 0; x < width; x++)
{
for (var y = 0; y < height; y++)
{
var environment = new Environment(Terrain.Unknown, false);
habitats[x, y] = new Habitat(environment, null);
}
}
return habitats;
}
public MockEcosystem(Habitat[,] habitats, Dictionary<Organism, Habitat> organismHabitats, Dictionary<Organism, Habitat> overriddenChosenHabitats)
: base(habitats, organismHabitats)
{
this.OverriddenChosenHabitats = overriddenChosenHabitats;
}
private void MoveOrganism(Organism organism, Habitat destination)
{
var source = this.OrganismHabitats[organism];
// the organism cannot move if it is dead
if (!organism.IsAlive)
{
throw new InvalidOperationException(
string.Format("Cannot move organism {0} to {1} because it is dead",
organism, destination));
}
// the organism can only move to the destination if it is not obstructed
if (destination.IsObstructed())
{
throw new InvalidOperationException(
string.Format("Cannot move organism {0} to {1} because the destination is obstructed",
organism, destination));
}
// the organism can only move to the destination if it does not already contain an organism
if (destination.ContainsOrganism())
{
throw new InvalidOperationException(
string.Format("Cannot move organism {0} to {1} because the destination is occupied by {2}",
organism, destination, destination.Organism));
}
source.RemoveOrganism();
destination.AddOrganism(organism);
this.OrganismHabitats[organism] = destination;
}
private List<Habitat> GetNeighbouringHabitats(Habitat habitat)
{
var neighbouringHabitats = new List<Habitat>();
var location = this.HabitatCoordinates[habitat];
for (var x = location.X - 1; x <= location.X + 1; x++)
{
// do not carry on if x is out-of-bounds
if (x < 0 || x >= this.Width)
{
continue;
}
for (var y = location.Y - 1; y <= location.Y + 1; y++)
{
// do not carry on if y is out-of-bounds
if (y < 0 || y >= this.Height)
{
continue;
}
neighbouringHabitats.Add(this.Habitats[x, y]);
}
}
return neighbouringHabitats;
}