我正在制作一款游戏，一旦你输了就会把你带到最终场景。结束场景有一个重启按钮，可以将您发送回gamescene。 （这是重启功能。）
func Restart(){
self.view?.presentScene(GameScene())
RestartButton.removeFromSuperview()
}
由于某种原因，当我运行它时构建失败并且我收到错误消息＆＃34;无法调用类型＆＃39; GameScene＆＃39;的初始化程序。没有参数＆＃34;。在我添加此代码之前，构建已运行：
let gamearea: CGRect
override init(size: CGSize) {
let maxAspectRatio: CGFloat = 16.0/9.0
let playableWidth = size.height / maxAspectRatio
let margin = (size.width - playableWidth) / 2
gamearea = CGRect(x: margin, y: 0, width: playableWidth, height: size.height)
super.init(size: size)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
此代码需要在此处使其他内容有效。 在我为场景设置大小之前。 请告诉我如何解决这个问题以及为了做到这一点我需要做些什么。 我的完整游戏场景代码如下。
import SpriteKit
struct physicsCatagory {
static let person : UInt32 = 0x1 << 1
static let Ice : UInt32 = 0x1 << 2
static let IceTwo : UInt32 = 0x1 << 3
static let IceThree : UInt32 = 0x1 << 4
static let Score : UInt32 = 0x1 << 5
}
class GameScene: SKScene, SKPhysicsContactDelegate {
func random() -> CGFloat{
return CGFloat(Float(arc4random()) / 0xFFFFFFFF)
}
func random(min min: CGFloat, max: CGFloat) -> CGFloat{
return random() * (max - min) + min
}
let gamearea: CGRect
override init(size: CGSize) {
let maxAspectRatio: CGFloat = 16.0/9.0
let playableWidth = size.height / maxAspectRatio
let margin = (size.width - playableWidth) / 2
gamearea = CGRect(x: margin, y: 0, width: playableWidth, height: size.height)
super.init(size: size)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
var timeOfLastSpawn: CFTimeInterval = 0.0
var timePerSpawn: CFTimeInterval = 1.2
var scorenumber = Int()
var lifenumber = Int()
var SpeedNumber : Double = 0.5
var person = SKSpriteNode(imageNamed: "Person1")
let Score = SKSpriteNode()
var ScoreLable = SKLabelNode()
let BackGround = SKSpriteNode (imageNamed: "BackGround")
override func didMoveToView(view: SKView) {
physicsWorld.contactDelegate = self
//self.scene?.size = CGSize(width: 640, height: 1136)
lifenumber = 0
SpeedNumber = 1
BackGround.size = CGSize(width: self.frame.width, height: self.frame.height)
BackGround.position = CGPointMake(self.size.width / 2, self.size.height / 2)
BackGround.zPosition = -5
self.addChild(BackGround)
Score.size = CGSize(width: 1563, height: 1)
Score.position = CGPoint(x: 320, y: -90)
Score.physicsBody = SKPhysicsBody(rectangleOfSize: Score.size)
Score.physicsBody?.affectedByGravity = false
Score.physicsBody?.dynamic = false
Score.physicsBody?.categoryBitMask = physicsCatagory.Score
Score.physicsBody?.collisionBitMask = 0
Score.physicsBody?.contactTestBitMask = physicsCatagory.IceThree
Score.color = SKColor.blueColor()
self.addChild(Score)
person.zPosition = 1
person.position = CGPointMake(self.size.width/2, self.size.height/10)
person.setScale(0.6)
person.physicsBody = SKPhysicsBody (rectangleOfSize: CGSize(width: 40, height: 50))
person.physicsBody?.affectedByGravity = false
person.physicsBody?.categoryBitMask = physicsCatagory.person
person.physicsBody?.contactTestBitMask = physicsCatagory.Ice
person.physicsBody?.collisionBitMask = physicsCatagory.Ice
person.physicsBody?.dynamic = false
ScoreLable = SKLabelNode(fontNamed: "Zapfino")
ScoreLable.position = CGPoint(x: self.frame.width / 2, y: 1700)
ScoreLable.text = "\(scorenumber)"
ScoreLable.fontColor = UIColor.yellowColor()
ScoreLable.fontSize = 150
ScoreLable.fontName = "Zapfino "
self.addChild(ScoreLable)
self.addChild(person)
}
func didBeginContact(contact: SKPhysicsContact) {
let firstBody = contact.bodyA
let secondBody = contact.bodyB
if firstBody.categoryBitMask == physicsCatagory.person && secondBody.categoryBitMask == physicsCatagory.IceThree || firstBody.categoryBitMask == physicsCatagory.IceThree && secondBody.categoryBitMask == physicsCatagory.person{
scorenumber++
if scorenumber == 20 {
timePerSpawn = 1.0
}
if scorenumber == 40{
timePerSpawn = 0.89
}
if scorenumber == 60{
timePerSpawn = 0.6
}
if scorenumber == 80{
timePerSpawn = 0.5
}
if scorenumber == 100{
timePerSpawn = 0.4
}
if scorenumber == 120{
timePerSpawn = 0.3
}
ScoreLable.text = "\(scorenumber)"
CollisionWithPerson(firstBody.node as! SKSpriteNode, Person: secondBody.node as! SKSpriteNode)
}
if firstBody.categoryBitMask == physicsCatagory.Score && secondBody.categoryBitMask == physicsCatagory.IceThree ||
firstBody.categoryBitMask == physicsCatagory.IceThree && secondBody.categoryBitMask == physicsCatagory.Score{
lifenumber++
if lifenumber == 1{
//person.texture
person.texture = SKTexture (imageNamed: "Flower#2")
}
if lifenumber == 2{
person.texture = SKTexture (imageNamed: "Flower #3")
}
if lifenumber == 3{
self.view?.presentScene(EndScene())
}
}
}
func CollisionWithPerson (Ice: SKSpriteNode, Person: SKSpriteNode){
Person.removeFromParent()
}
func spawnThirdIce(){
var Ice = SKSpriteNode(imageNamed: "Ice")
Ice.zPosition = 2
Ice.setScale(1.5)
Ice.physicsBody = SKPhysicsBody(rectangleOfSize: Ice.size)
Ice.physicsBody?.categoryBitMask = physicsCatagory.IceThree
Ice.physicsBody?.contactTestBitMask = physicsCatagory.person | physicsCatagory.Score
Ice.physicsBody?.affectedByGravity = false
Ice.physicsBody?.dynamic = true
let randomXStart = random(min:CGRectGetMinX(gamearea), max: CGRectGetMaxX(gamearea))
let randomXend = random(min:CGRectGetMinX(gamearea),max: CGRectGetMaxX(gamearea))
let startPoint = CGPoint(x: randomXStart, y: self.size.height * 1.2)
let endpoint = CGPoint(x: randomXend, y: -self.size.height * 0.2)
Ice.position = startPoint
let moveEnemy = SKAction.moveTo(endpoint, duration: 2.0)
let deleteEnemy = SKAction.removeFromParent()
let enemySequence = SKAction.sequence([moveEnemy , deleteEnemy])
Ice.runAction(enemySequence)
// let MinValue = self.size.width / 8
//let MaxValue = self.size.width - 20
// let SpawnPoint = UInt32(MaxValue - MinValue)
// Ice.position = CGPoint(x: CGFloat(arc4random_uniform(SpawnPoint)), y: self.size.height)
self.addChild(Ice)
//let action = SKAction.moveToY(-85, duration: 2.0)
//let actionDone = SKAction.removeFromParent()
//Ice.runAction(SKAction.sequence([action,actionDone]))
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch: AnyObject in touches {
let location = touch.locationInNode(self)
let previousTouch = touch.previousLocationInNode(self)
let ammountDragged = location.x - previousTouch.x
person.position.x += ammountDragged
if person.position.x > CGRectGetMaxX(gamearea) - person.size.width/2{
person.position.x = CGRectGetMaxX(gamearea) - person.size.width/2
}
if person.position.x < CGRectGetMinX(gamearea) + person.size.width/2{
person.position.x = CGRectGetMinX(gamearea) + person.size.width/2
}
}
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
if (currentTime - timeOfLastSpawn > timePerSpawn) {
spawnThirdIce()
self.timeOfLastSpawn = currentTime
}
}
}
答案 0 :(得分：1)
问题在于你的游戏场景类传递了一个init方法（大小）。
class GameScene: SKScene, SKPhysicsContactDelegate {
...
override init(size: CGSize) {...
但是，在重启func中，你没有调用这个init。
更改此行
self.view?.presentScene(GameScene())
到这一行
self.view?.presentScene(GameScene(size: self.size)) // same size as current scene
我还建议您在gameScene类中使用didMoveToView而不是init方法。
此外，我建议您使用SKNodes / SKSpriteNodes作为按钮而不是UIButtons。 UIButtons被添加到视图中，而不是在SpriteKit游戏中不是你想要的SKScene。 一个简单的版本可能看起来像这样
https://nathandemick.com/programming/tutorial/2014/09/23/buttons-sprite-kit-using-swift.html
对于更高级的版本，您可以查看Apples示例游戏＆＃34; DemoBots＆＃34;
另外作为一般提示，您应遵循快速指南。 只有类，枚举协议和结构应以大写字母开头，而您的属性/方法应以小写字母开头。它使您的代码更难以自己和Stackoverflow读取，因为属性标记为蓝色但不应该。
希望这有帮助