public static Map Load(string chart)
{
var map = new Map();
int index = 0;
for (int y = 0; y < HEIGHT; y++) {
for (int x = 0; x < WIDTH; x++) {
char c = chart[index++];
CellType cellType;
if (c == '.') {
cellType = CellType.Ground;
} else if (c == '#') {
cellType = CellType.Forest;
} else {
throw new ArgumentException($"Char '{c}' not valid. Map needs to be empty.");
}
Cell cell = new Cell(y, x, cellType);
map.Cells[y, x] = cell;
}
}
return map;
}
Cell[,] DoSimulationStep()
{
var newCells = new Cell[HEIGHT, WIDTH];
for (int y = 0; y < HEIGHT; y++) {
for (int x = 0; x < WIDTH; x++) {
int neighbours = CountForestNeighbors(y, x);
bool borderCell = y == 0 || y == HEIGHT - 1 || x == 0 || x == WIDTH - 1;
if (borderCell || neighbours > 4) {
newCells[y, x] = new Cell(y, x, CellType.Forest);
} else if (neighbours <= 4) {
newCells[y, x] = new Cell(y, x, CellType.Ground);
}
}
}
return newCells;
}