ios - 将之前计算的数据添加到每次按下 UIButton 时生成的新数据中

Question

我正在处理 3 个主要数据: 伤害经验, 起始攻击等级， 当前攻击级别。

当按下 UIButton Attack 时，会获得 DamageExp，然后将其添加到startingAttackLevel 中，从而得到 currentAttackLevel。

现在我想做的是每当再次按下按钮时添加获得的最新伤害Exp并将其添加到之前的currentAttackLevel，以创建新的CurrentLevel等等。

我创建了一个名为 Enemy 的类和一个名为 attack() 的方法。但我只是不知道如何保存当前数据，然后能够再次点击 UIButton 并将最新的 xp 添加到之前的 currentAttackLevel。

这可能很简单，但我不知道我需要知道什么。

这是我的类(class)敌人.swift

class Enemy  {
     var healthLevel = 100

    func health() {
       print("You currently have \(healthLevel) health")
    }

    func move(steps: Int) -> String {
        return "Walk forward \(steps) paces"
    }

    func attack() {
        let startingAttackLevel: Float = 10.0
        var currentAttackLevel: Float = 10.0
        var attackStrength = currentAttackLevel
        var attackRoll = Float.random(in: 0.0...((currentAttackLevel * 0.20) + currentAttackLevel))
        var attackDamage = attackRoll * attackStrength
        var damageExp: Float = 0.0

        if attackRoll > (currentAttackLevel - (currentAttackLevel * 0.20)) && attackRoll < ((currentAttackLevel * 0.20) + currentAttackLevel) {
            damageExp = currentAttackLevel * 0.30
            currentAttackLevel = damageExp + startingAttackLevel

        } else if attackRoll > (currentAttackLevel - (currentAttackLevel * 0.60)) && attackRoll < (currentAttackLevel - (currentAttackLevel * 0.20)){
            damageExp = currentAttackLevel * 0.15
           currentAttackLevel = damageExp + startingAttackLevel

        } else if attackRoll > 0.0 && attackRoll < (currentAttackLevel - (currentAttackLevel * 0.60)){
            damageExp = currentAttackLevel * 0.06
            currentAttackLevel = damageExp + startingAttackLevel
        }

        print("You roll a \(String(format: "%.0f", attackRoll)). You do a total damage of \(String(format: "%.1f", attackDamage)) damage. ")
        print("You have gained a total amount of \(damageExp) xp")
        print("Your are currently level \(currentAttackLevel)")
    }
}

下面是我的 viewController.swift 记住我的 Enemy() 类是 = 我的常量骨架

import UIKit

class ViewController: UIViewController {

    let skeleton = Enemy()

    @IBOutlet weak var mainTextLabel: UILabel!

    @IBAction func walkForward(_ sender: UIButton) {

        print(skeleton.move(steps: Int.random(in: 0...50)))

    }

    @IBAction func attack(_ sender: UIButton) {

        skeleton.health()
        skeleton.attack()

    }
}

Answer 1

您可以使用以下代码 -

class Enemy  {
static let initialHealthValueConstant : Float = 100.0

let initialHealthLevel : Float = Enemy.initialHealthValueConstant
var currentHealthLevel : Float

init(with currentHealthLevel : Float) {
    self.currentHealthLevel = currentHealthLevel
}

convenience init() {
    self.init(with: Enemy.initialHealthValueConstant)
}

func health() {
   print("You currently have \(currentHealthLevel) health")
}

func move(steps: Int) -> String {
    return "Walk forward \(steps) paces"
}

func attack() {
    let startingAttackLevel = currentHealthLevel
    var currentAttackLevel = currentHealthLevel
    let attackStrength = currentAttackLevel
    let attackRoll = Float.random(in: 0.0...((currentAttackLevel * 0.20) + currentAttackLevel))
    let attackDamage = attackRoll * attackStrength
    var damageExp: Float = 0.0

    if attackRoll > (currentAttackLevel - (currentAttackLevel * 0.20)) && attackRoll < ((currentAttackLevel * 0.20) + currentAttackLevel) {
        damageExp = currentAttackLevel * 0.30
        currentAttackLevel = damageExp + startingAttackLevel

    } else if attackRoll > (currentAttackLevel - (currentAttackLevel * 0.60)) && attackRoll < (currentAttackLevel - (currentAttackLevel * 0.20)){
        damageExp = currentAttackLevel * 0.15
       currentAttackLevel = damageExp + startingAttackLevel

    } else if attackRoll > 0.0 && attackRoll < (currentAttackLevel - (currentAttackLevel * 0.60)){
        damageExp = currentAttackLevel * 0.06
        currentAttackLevel = damageExp + startingAttackLevel
    }

    currentHealthLevel = currentAttackLevel
    print("You roll a \(String(format: "%.0f", attackRoll)). You do a total damage of \(String(format: "%.1f", attackDamage)) damage. ")
    print("You have gained a total amount of \(damageExp) xp")
    print("Your are currently level \(currentAttackLevel)")
}
}

此外，您不需要这两个额外的变量 - currentAttackLevel、startingAttackLevel。您可以使用 currentHealthLevel 来代替它们。