[英]Swift 2, SpriteKit, I'm having trouble removing a node from parent
我是Swift的新手,如果這令人困惑,請原諒我。
我試圖讓我的節點之一“番石榴”在“忍者”與之碰撞時消失。
目前,我的代碼是在我的createScene()函數中設置的,如下所示:
func spawnGuava(){
//The way the Guava spawn and move
let guavaNode = SKNode()
let guava = SKSpriteNode(texture: guavaNodeTexture)
guava.setScale(0.75)
guava.position = CGPointMake (self.size.width + 160, self.size.height * 0.05)
guava.physicsBody = SKPhysicsBody(rectangleOfSize: guava.size)
guava.physicsBody?.affectedByGravity = false
guava.physicsBody?.dynamic = true
guava.alpha = 0.75
guava.physicsBody?.categoryBitMask = PhysicsCatagory.Guava
guava.physicsBody?.collisionBitMask = PhysicsCatagory.None
guava.physicsBody?.contactTestBitMask = PhysicsCatagory.Ninja
guava.zPosition = 0
guavaNode.addChild(guava)
guava.runAction(GuavaMoveAndRemove)
self.addChild(guavaNode)
func ninjaAteGuava(ninja: SKSpriteNode, guava: SKSpriteNode){
guavaNode.removeFromParent()
}
func didCollideWithGuava(contact: SKPhysicsContact){
var firstBody: SKPhysicsBody
var secondBody: SKPhysicsBody
if contact.bodyA.categoryBitMask < contact.bodyB.categoryBitMask{
firstBody = contact.bodyA
secondBody = contact.bodyB
}
else{
firstBody = contact.bodyB
secondBody = contact.bodyA
}
if ((firstBody.categoryBitMask & PhysicsCatagory.Guava != 0) && (secondBody.categoryBitMask & PhysicsCatagory.Ninja != 0)) {
ninjaAteGuava(firstBody.node as! SKSpriteNode, guava: secondBody.node as! SKSpriteNode)
}
}
這是有關忍者的一些信息
let ninjaTexture = SKTexture(imageNamed:"ninja")
ninjaTexture.filteringMode = SKTextureFilteringMode.Nearest
ninja = SKSpriteNode(texture: NinjaTexture)
ninja.setScale(0.5)
ninja.position = CGPoint(x: self.frame.size.width * 0.50, y: self.frame.size.height * 0.6)
ninja.physicsBody = SKPhysicsBody(circleOfRadius: ninja.size.height / 2)
ninja.physicsBody?.categoryBitMask = PhysicsCatagory.Ninja
ninja.physicsBody?.collisionBitMask = PhysicsCatagory.Ground | PhysicsCatagory.Wall |
ninja.physicsBody?.contactTestBitMask = PhysicsCatagory.Ground | PhysicsCatagory.Wall | PhysicsCatagory.Guava
ninja.physicsBody!.dynamic = true
ninja.physicsBody!.allowsRotation = false
self.addChild(ninja)
額外信息:
struct PhysicsCatagory {
static let None : UInt32 = 0
static let Boognish : UInt32 = 0x1 << 1
static let Ground : UInt32 = 0x1 << 2
static let Wall : UInt32 = 0x1 << 3
static let Guava : UInt32 = 0x1 << 4
static let Pepper: UInt32 = 0x1 << 5
}
guavaNode
在ninjaAteGuava function
應為guava
func ninjaAteGuava(ninja: SKSpriteNode, guava: SKSpriteNode){
guavaNode.removeFromParent()
}
應該:
func ninjaAteGuava(ninja: SKSpriteNode, guava: SKSpriteNode){
guava.removeFromParent()
}
這是因為函數中的參數是番石榴。 不是guavaNode。 我不知道為什么Xcode沒有給你一個錯誤,但這應該可以。 希望這可以幫助。
您是否已將guavaNode
添加到場景或guava
? 因為您要從場景中刪除guavaNode
,但我懷疑您可能已在guava.runAction(GuavaMoveAndRemove)
guava
添加到了場景中
還是該動作中還有其他可能觸發您的錯誤的東西?
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