private void RemoveDead(LivingBeing dead) // removing an element from the scene
{
if (dead is Fish fish)
{
FishList = FishList.Where(diedFish => diedFish != dead).ToArray(); //remove from array all died Fish
if (fish is Carnivore carn) // remove from general delegate the action so it's not triggered anymore
{
AttackCarn -= carn.Attack;
}
else if (fish is Herbivore herb)
{
AttackHerb -= herb.Attack;
}
ReproduceFish -= fish.Mate;
AddToReport(fish.name.ToString() + " died");
}
else if (dead is Alga alga)
{
AlgaList = AlgaList.Where(diedAlga => diedAlga != dead).ToArray(); // remove from array all died algas
ReproduceAlga -= alga.Grow; // remove from general delegate the growing action
AddToReport("An alga disapeared");
}
dead.Dispose(); // make the object disposable for garbage collector
}
private void AddToArray(LivingBeing newElement) // add new element to the right array
{
newElement.ReportToAqua += AddToReport;
if (newElement is Fish fish)
{
List <Fish> newFishList = FishList.ToList(); // add fish to array
newFishList.Add(fish);
FishList = newFishList.ToArray();
fish.Reproduce += delegate(string name, Fish parent) // link the reproduction actionby an anonymous delegate to the fish delegate
{
Fish newFish = (Fish)Activator.CreateInstance(parent.GetType(), name);
AddToArray(newFish);
};
ReproduceFish += fish.Mate; // add the mating action to the reproduction general delegate
if (fish is Carnivore carn) // add the attacking action to the attacking general delegate
{
AttackCarn += carn.Attack;
}
else if (fish is Herbivore herb)
{
AttackHerb += herb.Attack;
}
}
else if (newElement is Alga alga) // Add the alga to the array
{
List <Alga> newAlgaList = AlgaList.ToList();
newAlgaList.Add(alga);
AlgaList = newAlgaList.ToArray();
alga.Reproduce += AddAlga; // add the reproduction action to the alga delegate
ReproduceAlga += alga.Grow; // add the alga's reproduction action to the general delegate
}
newElement.death += RemoveDead; // Link the function that removes the element when it dies to the element's delegate
}
