//: Playground - noun: a place where people can play
import UIKit
struct Bank {
static var coinsInBank = 10_000
func vendCoins(var numberOfCoinsTovend: Int) -> Int {
numberOfCoinsTovend = min(numberOfCoinsTovend,coinsInBank)
coinsInBank -= numberOfCoinsTovend
return numberOfCoinsTovend
}
func receiveCoins(coins: Int) {
coinsInBank += coins
}
}
class Player {
var coinsInPurse: Int
init(coins: Int) {
coinsInPurse = Bank.vendCoins(coins)
}
func winCoins(coins: Int) {
coinsInPurse += Bank.vendCoins(coins)
}
deinit {
Bank.receiveCoins(coinsInPurse)
}
}
var playerOne: Player? = Player(coins: 100)
playerOne?.coinsInPurse
Bank.coinsInBank
playerOne?.winCoins(2_000)
playerOne?.coinsInPurse
Bank.coinsInBank
playerOne = nil
Bank.coinsInBank
