public void KillCurrentAnimal()
{
if (_animal != null)
{
if (_animal is fish)
{
FishBowl._Instance._nCurrentFish--;
}
else
{
FishBowl._Instance._nCurrentSharks--;
}
_animal = null;
}
}
public animal _animal; // null is empty, else fish or shark
public Cell(int nRow, int nCol)
{
_nRow = nRow;
_nCol = nCol;
var nRand = FishBowl._Instance._random.Next(100);
if (nRand < FishBowl._Instance._FishInitPct)
{
_animal = new fish();
}
else
{
nRand -= FishBowl._Instance._FishInitPct;
if (nRand < FishBowl._Instance._SharkInitPct)
{
_animal = new shark();
}
else
{
_animal = null; // no animal
}
}
}
public void CalcGeneration()
{// see what happends to this cell
if (_MouseButton.HasValue)
{
var button = _MouseButton;
_MouseButton = null;
{
var baby = Activator.CreateInstance(
button == MouseButton.Left ? typeof(fish) : typeof(shark)
);
KillCurrentAnimal();
_animal = (animal)baby;
_animal._nDateOfLastChildBirth = FishBowl._Instance._nYearCurrent;
_animal._nDateOfLastAction = FishBowl._Instance._nYearCurrent;
_priorBrush = IntPtr.Zero; // recalc color for cur cell
return;
}
}
// is it a shark? does it die of starvation?
if (_animal != null && !_animal.Survives())
{
KillCurrentAnimal();
}
if (_animal != null &&
(FishBowl._Instance._OneActionPerYear ?
!_animal.DidSomethingInCurrentYear : // moved in current yr
true)
)
{ // if still alive
var neighborCells = FishBowl._Instance.GetRandomNeighbors(this);
// sharks eat 1 adjacent fish
bool fDidEat = false;
if (_animal is shark)
{
// find first fish in neighbors
var foodCell = neighborCells.Where(
c => c._animal is fish &&
c._animal.Age > 0 // don't eat babies
).FirstOrDefault();
if (foodCell != null)
{// eat the fish! and move shark to where food was
_animal._nDateOfLastMeal =
FishBowl._Instance._nYearCurrent;
foodCell._animal = _animal;
_animal._nDateOfLastAction = FishBowl._Instance._nYearCurrent;
_priorBrush = IntPtr.Zero; // recalc color for cur cell
FishBowl._Instance._nCurrentFish--;
fDidEat = true;
if (_animal.CanBreed) // replace current cell with baby cuz mama moved
{
_animal._nDateOfLastAction = FishBowl._Instance._nYearCurrent;
var baby = Activator.CreateInstance(_animal.GetType());
foodCell._animal._nDateOfLastChildBirth = FishBowl._Instance._nYearCurrent;
_animal = (animal)baby;
}
else
{
_animal = null; // shark moved, so current cell empty
}
}
}
if (!fDidEat) // if cell still occupied by original animal (didn't move)
{
var emptyNeighborCell = neighborCells.Where(
c => c._animal == null
).FirstOrDefault();
if (emptyNeighborCell != null)
{
// Breeding
if (_animal.CanBreed)
{
// old enough to breed: have a baby
// 100% fertility rate
var baby = Activator.CreateInstance(_animal.GetType());
emptyNeighborCell._animal = (animal)baby;
_animal._nDateOfLastChildBirth = FishBowl._Instance._nYearCurrent;
_animal._nDateOfLastAction = FishBowl._Instance._nYearCurrent;
_priorBrush = IntPtr.Zero; // recalc color for cur cell
}
else
{// can't breed AND move
var nMoves = _animal.NumMovesPerGeneration;
for (int i = 0; i < nMoves; i++)
{
// moving to neighbor cell
_animal._nDateOfLastAction = FishBowl._Instance._nYearCurrent;
emptyNeighborCell._animal = _animal;
_animal = null;
_priorBrush = IntPtr.Zero; // recalc color for cur cell
if (i + 1 < nMoves)
{ // could move back to original cell
neighborCells = FishBowl._Instance.GetRandomNeighbors(this);
emptyNeighborCell = neighborCells.Where(
c => c._animal == null
).FirstOrDefault();
if (emptyNeighborCell == null)
{
break;
}
}
}
}
}
}
}
}