private Cell GetNeighborAt(Cell cell, int index)
{
index = index % 8;
int targetx = cell.x;
int targety = cell.y;
switch (index) {
case 0:
targetx--;
break;
case 1:
targetx--;
targety--;
break;
case 2:
targety--;
break;
case 3:
targety--;
targetx++;
break;
case 4:
targetx++;
break;
case 5:
targetx++;
targety++;
break;
case 6:
targety++;
break;
case 7:
targety++;
targetx--;
break;
}
if ((targetx > (this.width - 1)) || (targety > (this.height - 1)) || (0 > targetx) || (0 > targety)) {
return null;
}
var neighbor = this.cells[targetx, targety];
return neighbor;
}
private bool InfectCell(Cell cell)
{
double random = RandomNumber.GetRandomDouble();
if ((random < this.baseRate) && (0 < cell.state)) {
cell.state--;
return true;
}
return false;
}