BeauNouvelle

public convenience init() {
    let frame = CGRect(x: 0, y: 0, width: 1000, height: 1000)
    self.init(frame: frame)
}

BeauNouvelle

public convenience init(worldSize: Int, cellSize: Int) {
    let frame = CGRect(x: 0, y: 0, width: worldSize * cellSize, height: worldSize * cellSize)
    self.init(frame: frame)
    self.world = World(size: worldSize)
    self.cellSize = cellSize
}

BeauNouvelle

public class WorldView: UIView {
    var world: World = World(size: 100)
    var cellSize: Int = 10
}

BeauNouvelle

let world = World(size: 2)
dump(world.cells)

BeauNouvelle

for x in 0..<size {
    for y in 0..<size {
        let randomState = arc4random_uniform(3)
        let cell = Cell(x: x, y: y, state: randomState == 0 ? .alive : .dead)
        cells.append(cell)
    }
}

BeauNouvelle

public init(size: Int) {
    self.size = size
}

BeauNouvelle

public class World {
    public var cells = [Cell]()
    public let size: Int
}

BeauNouvelle

let firstCell = Cell(x: 10, y: 10, state: .dead)
let secondCell = Cell(x: 11, y: 10, state: .dead)
print(firstCell.isNeighbor(to: secondCell))
// true - Same row, adjacent column.

let firstCell = Cell(x: 10, y: 10, state: .dead)
let secondCell = Cell(x: 20, y: 10, state: .dead)
print(firstCell.isNeighbor(to: secondCell))
// false - Same row, vastly different column.

BeauNouvelle

let firstCell = Cell(x: 10, y: 10, state: .dead)
let secondCell = Cell(x: 11, y: 11, state: .dead)

print(firstCell.isNeighbor(to: secondCell))
// true - Adjacent row, adjacent column.

BeauNouvelle

public func isNeighbor(to cell: Cell) -> Bool {

    let xDelta = abs(self.x - cell.x)
    let yDelta = abs(self.y - cell.y)

    switch (xDelta, yDelta) {
    case (1, 1), (0, 1), (1, 0):
        return true
    default:
        return false