public override void StepForward(int x, int y, BaseCell[,] oldGrid, BaseCell[,] nextGrid)
{
var count = GetNeighbors(x, y, oldGrid).Count(c => c is OnCell);
if (count < 2 || count >= 4)
{
nextGrid[x, y] = new OffCell();
}
}
public override void StepForward(int x, int y, BaseCell[,] oldGrid, BaseCell[,] nextGrid)
{
if (y - 1 >= 0)
{
var cellBelow = oldGrid[x, y - 1];
if (cellBelow is Fire || cellBelow is OffCell)
{
nextGrid[x, y] = new OffCell();
nextGrid[x, y - 1] = new Sand();
}
else if (cellBelow is Water)
{
nextGrid[x, y] = new Water();
nextGrid[x, y - 1] = new Sand();
}
}
}
public LifeModel(int x, int y)
{
MaxX = x;
MaxY = y;
Grid = new BaseCell[x, y];
for (int i = 0; i < x; i++)
{
for (int j = 0; j < y; j++)
{
Grid[i, j] = ChooseCell(i);
}
}
for (int i = 0; i < x; i++)
{
Grid[0, i] = new OffCell();
Grid[i, 0] = new OffCell();
Grid[x - 1, i] = new OffCell();
Grid[i, y - 1] = new OffCell();
}
}
public override void StepForward(int x, int y, BaseCell[,] oldGrid, BaseCell[,] nextGrid)
{
//falls
if (!oldGrid[x, y - 1] is Sand &&
!oldGrid[x, y - 1] is Ice &&
!oldGrid[x, y - 1] is Water) //can't go through these cells
{
newGrid[x, y] = new OffCell(); //turn old cell (above) off?
newGrid[x, y - 1] = new Water();
}
//kills fire
for (int i = -1; i < +2; i++)
{
for (int j = -1; j < +2; j++) //iterate over neighbors
{
if (oldGrid[i, j] is Fire)
{
nextGrid[i, j] = new OffCell(); //turn off all fire neighbors
}
}
}
}
