本文介绍了打印数组的随机数(Swift)的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
首先这是我之前的问题,所以你会看到我想要做什么.
First of all here's my previous question so you see what I'm trying to make.
我们正在尝试制作一个小型游戏.我们制作了一种怪物格斗游戏.我们为游戏制作了物品,但我希望它们能被怪物掉落.制作了不同的类型,并想知道如何编码以获得物品的掉落机会......就像
所以现在我知道这是如何工作的,我不得不从我的列表中随机获取一个项目.
So now I know how that works I'm stuck to get a random item from my list.
所以我真正想要的是在我打印它时获得我的NormalType"列表的随机项目..
So what I actually want is to get a Random item of my "NormalType" list when i print it..
protocol NormalType {
var name: String { get }
}
class knife: NormalType {
let name = "Knife"
let Str = 10
}
class sword: NormalType {
let name = "Sword"
let Str = 20
}
class katana: NormalType {
let name = "Katana"
let Str = 30
}
class RareType {
class Knife: RareType {
var Str = 10
var Hp = 10
}
class sword: RareType {
var Str = 20
var HP = 15
}
class Katana: RareType {
var Str = 30
var Hp = 20
}
}
class LegendaryType {
class Knife: LegendaryType {
var Str = 10
}
class sword: LegendaryType {
var Str = 20
}
class Katana: LegendaryType {
var Str = 30
}
}
var Knife = knife()
var Sword = sword()
var Katana = katana()
var Items: [NormalType] = [Knife, Sword, Katana]
var randomnumber = (arc4random_uniform(2))
print(Items[randomnumber])
推荐答案
所以你犯了一个小错误,代码如下:
So you made a little mistake here's the code:
您忘记转换为 Int 了:(arc4random_uniform(2))
You have forgot to convert to Int the : (arc4random_uniform(2))
import UIKit
protocol NormalType {
var name: String { get }
}
class knife: NormalType {
let name = "Knife"
let Str = 10
}
class sword: NormalType {
let name = "Sword"
let Str = 20
}
class katana: NormalType {
let name = "Katana"
let Str = 30
}
class RareType {
class Knife: RareType {
var Str = 10
var Hp = 10
}
class sword: RareType {
var Str = 20
var HP = 15
}
class Katana: RareType {
var Str = 30
var Hp = 20
}
}
class LegendaryType {
class Knife: LegendaryType {
var Str = 10
}
class sword: LegendaryType {
var Str = 20
}
class Katana: LegendaryType {
var Str = 30
}
}
var Knife = knife()
var Sword = sword()
var Katana = katana()
var Items: [NormalType] = [Knife, Sword, Katana]
var randomnumber = Int(arc4random_uniform(2))
print(Items[randomnumber])
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