如何在快速数组中存储游戏级对象?

I want create an array with information of game level objects for my game. But I'm stuck in creating an appropriate array with this information to run this one later in a loop to place all game objects while loading this level.

我想为我的游戏创建一个包含游戏级对象信息的数组。但是我一直在用这些信息创建一个适当的数组，以便稍后在循环中运行这个数组，以便在加载这个级别时放置所有的游戏对象。

This is my array:

这是我的数组:

let level1 =
[
    (
        id: 1,
        position: CGPointMake(0.5, 0.8),
        impulse: CGVectorMake(-40, 0)
    )
]
let level2 =
[
    (
        id: 1,
        position: CGPointMake(0.5, 0.8),
        impulse: CGVectorMake(-40, 0)
    ),
    (
        id: 2,
        position: CGPointMake(0.5, 0.8),
        impulse: CGVectorMake(-40, 0)
    )
]

And this is my load level func:

这是我的负载级别func:

func loadLevel(levelNumber: Int = 1) {
    var level = [[String:AnyObject]]()

    switch(levelNumber) {
    case 1:
        level = level1 //Cannot assign a value of type '[(id: Int, position: CGPoint, impulse: CGVector)]' to a value of type '[([String: AnyObject])]'
    case 2:
        level = level2 //Cannot assign a value of type '[(id: Int, position: CGPoint, impulse: CGVector)]' to a value of type '[([String: AnyObject])]'
    case 3:
        level = level3 //Cannot assign a value of type '[(id: Int, position: CGPoint, impulse: CGVector)]' to a value of type '[([String: AnyObject])]'
    default:
        level = level1 //Cannot assign a value of type '[(id: Int, position: CGPoint, impulse: CGVector)]' to a value of type '[([String: AnyObject])]'
    }

    for s in level {
        var newShip = Ship(ship: ships[s.id! - 1], position: s.position)
        self.addChild(newShip)
        ship.physicsBody?.applyImpulse(s.impulse)
    }
}

I even do not know if this is a good approach to save/edit level object information.

我甚至不知道这是否是保存/编辑级别对象信息的好方法。

And when I use:

当我使用:

var level = [id:Int, position:CGPoint, impulse:CGVector]() //Use of unresolved identifier 'id'

1 个解决方案

#1

You have the wrong type for your level variable. It is not an array of dictionaries. It is an array of named tuples. Try declaring level like this:

级别变量的类型是错误的。它不是字典数组。它是一个名为元组的数组。尝试如下声明级别:

var level:[(id: Int, position: CGPoint, impulse: CGVector)]

If instead you put all of your levels in 1 big array, you can access each level with an array index and you won't need a big switch statement. I recommend telling Swift the type of the array when you declare it:

如果你把所有的层放在一个大数组中，你可以用一个数组索引访问每个层，你不需要一个大的switch语句。我建议在声明时告诉Swift数组的类型:

let levels: [[(id: Int, position: CGPoint, impulse: CGVector)]] = [
    // level 1
    [
        (
            id: 1,
            position: CGPointMake(0.5, 0.8),
            impulse: CGVectorMake(-40, 0)
        )
    ],
    // level 2
    [
        (
            id: 1,
            position: CGPointMake(0.5, 0.8),
            impulse: CGVectorMake(-40, 0)
        ),
        (
            id: 2,
            position: CGPointMake(0.5, 0.8),
            impulse: CGVectorMake(-40, 0)
        )
    ]
]

func loadLevel(levelNumber: Int = 1) {
    // Subtract 1 since array indices start at 0.  This will crash with Array
    // index out of range if the level doesn't exist.  Take proper precautions.
    let level = levels[levelNumber - 1]

    for s in level {
        var newShip = Ship(ship: ships[s.id - 1], position: s.position)
        self.addChild(newShip)
        ship.physicsBody?.applyImpulse(s.impulse)
    }
}

Or you can make levels be a dictionary with the level number being the key:

或者你可以把水平数作为一个字典，把这个数字作为关键字:

let levels: [Int:[(id: Int, position: CGPoint, impulse: CGVector)]] = [
    // level 1
    1: [
        (
            id: 1,
            position: CGPointMake(0.5, 0.8),
            impulse: CGVectorMake(-40, 0)
        )
    ],
    // level 2
    2: [
        (
            id: 1,
            position: CGPointMake(0.5, 0.8),
            impulse: CGVectorMake(-40, 0)
        ),
        (
            id: 2,
            position: CGPointMake(0.5, 0.8),
            impulse: CGVectorMake(-40, 0)
        )
    ]
]

func loadLevel(levelNumber: Int = 1) {
    // Unwrap the level information.  This will crash if it isn't a valid
    // level number.  Take proper precautions.
    let level = levels[levelNumber]!

    for s in level {
        var newShip = Ship(ship: ships[s.id - 1], position: s.position)
        self.addChild(newShip)
        ship.physicsBody?.applyImpulse(s.impulse)
    }
}

#1