从另一个类访问int
从另一个类访问int
提问于 2015-03-31 13:40:58
我有另一个视图，处理从最后的会议以及排行榜的分数。如何从我的GameOver类中的GameScene类访问我的得分int？
没有太多的寻找，我试着通过这样做来找到自己的路：
class GameOver: SKScene {
let score = GameScene().score
init(size: CGSize, won:Bool) {
super.init(size: size)
backgroundColor = SKColor.whiteColor()
var message = "\(score)"
println(score)
let label = SKLabelNode(fontNamed: "AvenirNextCondensed-Heavy")
label.text = message
label.fontSize = 40
label.fontColor = SKColor.blackColor()
label.position = CGPoint(x: size.width/2, y: size.height/2)
addChild(label)
}我认为如果我在GameScene中为我的分数创建了一个变量，那么它就可以工作了，但是它使用了等于0的分数变量。那么，当玩家死亡时，我如何将比分转移到上面的场景？
class GameScene: SKScene, SKPhysicsContactDelegate {
struct PhysicsCategory {
static let None: UInt32 = 0
static let All: UInt32 = UInt32.max
static let Enemy: UInt32 = 0b1
static let Player: UInt32 = 0b10
}
let player = SKSpriteNode(imageNamed: "Player")
var playerAlive: Bool = true
var touched:Bool = false
var location = CGPointMake(0, 0)
var difficulty = 1.0
var timer: NSTimer!
var scoreTimer: NSTimer!
var lastAddedTime : CFTimeInterval = 0
var score: Int = 0
var scoreLabel: SKLabelNode!
override func didMoveToView(view: SKView) {
backgroundColor = SKColor.whiteColor()
player.position = CGPoint(x: size.width * 0.5, y: size.height * 0.25)
player.physicsBody = SKPhysicsBody(circleOfRadius: player.size.width/2)
player.physicsBody?.dynamic = true
player.physicsBody?.categoryBitMask = PhysicsCategory.Player
player.physicsBody?.contactTestBitMask = PhysicsCategory.Enemy
player.physicsBody?.collisionBitMask = PhysicsCategory.None
player.physicsBody?.usesPreciseCollisionDetection = true
addChild(player)
physicsWorld.gravity = CGVectorMake(0, 0)
physicsWorld.contactDelegate = self
var timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: "increaseDifficulty", userInfo: nil, repeats: true)
var scoreTimer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: "addScore", userInfo: nil, repeats: true)
scoreLabel = SKLabelNode(fontNamed: "AvenirNextCondensed-Heavy")
scoreLabel.text = "\(score)"
scoreLabel.fontColor = SKColor.blackColor()
scoreLabel.fontSize = 40
scoreLabel.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame) + self.frame.size.height * 0.4)
addChild(scoreLabel)
}
func addScore() {
score += 1
println(score)
}回答 2
Stack Overflow用户
发布于 2015-03-31 14:01:28
我认为您需要将score变量声明为类级别变量，但在Swift中不直接支持，因此将score变量包装在结构中，如下所示：
private struct ScoreStruct {
static var score: Int = 0
}
class var staticScore: Int {
get { return ScoreStruct.score }
set { ScoreStruct.score = newValue }
}你可以像这样使用它：GameScene.staticScore
Stack Overflow用户
发布于 2015-03-31 14:11:59
GameScene是一个类。它在哪里实例化？在您的项目中搜索术语"presentScene:“，应该有一些类似这样的语言
let myGameScene = GameScene()
skView.presentScene(myGameScene)此外，在您的项目中必须有一个地方包含如下代码。添加带有注释的行
let myGameOver = GameOverScene()
if(conditionIsMet)
{
myGameOver.passScore(myGameScene.score) //add this line
skView.presentScene(myGameOver)
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/29361342
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