SpriteKitベース：衝突を検出することができませんでし

Question

はので、私はskphysicscontactを使用しようとしたが、「猫」と「spinnynodeは」衝突したときの物理的な相互作用

がなぜでき、別のノートにある場合でも、それらからの出力はありませんタイマー機能は動作しますか？それはまったく関数を呼び出すようには見えません。

助けてください、私は初心者です。おかげ

import SpriteKit 
import GameplayKit 
import UIKit 
import Foundation 

struct physicsCollision { 
static let cat: UInt32 = 1 
static let spinnyNode: UInt32 = 2 
} 



class GameScene: SKScene, SKPhysicsContactDelegate { 



var entities = [GKEntity]() 
var graphs = [String : GKGraph]() 
var catTimer = Timer() 
var score = 0 


private var lastUpdateTime : TimeInterval = 0 
private var label : SKLabelNode? 
private var spinnyNode : SKShapeNode? 




let meow = SKAction.playSoundFileNamed("cat meow", waitForCompletion: false) 



required init?(coder aDecoder: NSCoder) { 
    super.init(coder: aDecoder) 
} 

//random range 

func randomInRange(lo: Float, hi : Float) -> Float{ 
    return lo + Float(arc4random_uniform(UInt32(hi - lo + 1))) 
} 


//spawn cat 

func spawnCat(){ 

    // x coordinate between MinX (left) and MaxX (right): 
    let randomX = randomInRange(lo: Float(self.frame.minX + 5), hi: Float(self.frame.maxX + 5)) 

    let startPoint = CGPoint(x: CGFloat(randomX), y: self.frame.height * 1.2) 
    let endPoint = CGPoint(x: CGFloat(randomX), y:self.frame.height * -0.5) 
    let cat = SKSpriteNode(imageNamed: "before right") 

    cat.name = "cat" 
    cat.setScale(0.3) 
    cat.position = startPoint 
    cat.zPosition = 1 
    cat.physicsBody = SKPhysicsBody(rectangleOf: CGSize(width: cat.size.width, height: cat.size.height)) 
    cat.physicsBody?.affectedByGravity = false 
    cat.physicsBody?.categoryBitMask = physicsCollision.cat 
    cat.physicsBody?.contactTestBitMask = physicsCollision.spinnyNode 
    cat.physicsBody?.collisionBitMask = physicsCollision.spinnyNode 
    cat.physicsBody?.isDynamic = false 
    self.addChild(cat) 

    let moveCat = SKAction.move(to: endPoint, duration: 5) 
    let deleteCat = SKAction.removeFromParent() 
    let catSequence = SKAction.sequence([moveCat, meow, deleteCat]) 
    cat.run(catSequence) 


} 

//contact func 

func didBeginContact(contact:SKPhysicsContact){ 

    var firstBody = SKPhysicsBody() 
    var secondBody = SKPhysicsBody() 

    if contact.bodyA.node?.name == "cat" 
    { 
     firstBody = contact.bodyA 
     secondBody = contact.bodyB 
    } 
    else{ 
     firstBody = contact.bodyB 
     secondBody = contact.bodyA 
    } 
if firstBody.node?.name == "cat" && (secondBody.node?.name)! == "skinnynode"{ 
    print("contacted") 

    } 
} 


override func sceneDidLoad() { 

    self.physicsWorld.contactDelegate = self 

    self.lastUpdateTime = 0 

    //spawn cat at intervals,, time interval to decrease when points increase, use if loop 


    catTimer = Timer.init(timeInterval: 1 , target: self, selector: Selector(("cat")), userInfo: nil, repeats: true) 



    // Create shape node to use during mouse interaction 
    let w = (self.size.width + self.size.height) * 0.05 
    self.spinnyNode = SKShapeNode.init(rectOf: CGSize.init(width: w, height: w), cornerRadius: w * 0.5) 
    spinnyNode?.name = "spinnynode" 
    spinnyNode?.physicsBody = SKPhysicsBody(circleOfRadius: 0.5) 
    spinnyNode?.physicsBody?.affectedByGravity = false 
    spinnyNode?.zPosition = 1 
    spinnyNode?.physicsBody?.categoryBitMask = physicsCollision.spinnyNode 
    if let spinnyNode = self.spinnyNode{ 
     spinnyNode.lineWidth = 1.5 
     spinnyNode.run(SKAction.repeatForever(SKAction.rotate(byAngle: CGFloat(Double.pi), duration: 1))) 
     spinnyNode.run(SKAction.sequence([SKAction.wait(forDuration: 0.5), 
              SKAction.fadeOut(withDuration: 0.3), 
              SKAction.removeFromParent()])) 
             } 

    //create score label 
    let scoreLabel = UILabel(frame: CGRect(x:((self.frame.height) * 0.5) , y:((self.frame.width) * 0.3), width: (self.frame.size.width)/3, height: 30)) 
    scoreLabel.center = CGPoint(x: (self.frame.size.width)/1.6 , y: (self.frame.size.height)/2) 
    scoreLabel.textColor = UIColor.white 
    scoreLabel.text = "\(score)" 
    self.view?.addSubview(scoreLabel) 



           } 


func touchDown(atPoint pos : CGPoint) { 
    if let n = self.spinnyNode?.copy() as! SKShapeNode? { 
     n.position = pos 
     n.strokeColor = SKColor.green 
     self.addChild(n) 
    } 
} 

func touchMoved(toPoint pos : CGPoint) { 
    if let n = self.spinnyNode?.copy() as! SKShapeNode? { 
     n.position = pos 
     n.strokeColor = SKColor.purple 
     self.addChild(n) 

    } 
} 

func touchUp(atPoint pos : CGPoint) { 
    if let n = self.spinnyNode?.copy() as! SKShapeNode? { 
     n.position = pos 
     n.strokeColor = SKColor.red 
     self.addChild(n) 
    } 
} 

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { 

      spawnCat() 
      if let label = self.label { 
      label.run(SKAction.init(named: "Pulse")!, withKey: "fadeInOut") 

    } 

    for t in touches { self.touchDown(atPoint: t.location(in: self)) } 
} 

override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) { 
    for t in touches { self.touchMoved(toPoint: t.location(in: self)) } 
} 

override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) { 
    for t in touches { self.touchUp(atPoint: t.location(in: self)) } 
} 

override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) { 
    for t in touches { self.touchUp(atPoint: t.location(in: self)) } 
} 


override func update(_ currentTime: TimeInterval) { 
    // Called before each frame is rendered 

    // Initialize _lastUpdateTime if it has not already been 
    if (self.lastUpdateTime == 0) { 
     self.lastUpdateTime = currentTime 
    } 

    // Calculate time since last update 
    let dt = currentTime - self.lastUpdateTime 

    // Update entities 
    for entity in self.entities { 
     entity.update(deltaTime: dt) 
    } 

    self.lastUpdateTime = currentTime 
} 

}

Answer 1

あなたはSKPhysicsContactDelegateのcategoryBitMask方法を使用してみましたか？ GameScene.sksファイルに移動し、Category Maskにデフォルト以外の番号を割り当てることで、問題を解決できる場合があります。両方の身体に対してこれを行いますが、各身体に異なる値を割り当ててください。

class GameScene: SKScene, SKPhysicsContactDelegate { 

//set these values to the same number in your GameScene.sks file 
let catCategory = 2 
let skinnyNodeCategory = 3 

func didBegin(_ contact: SKPhysicsContact) { 

    let bodyA = contact.bodyA 
    let bodyB = contact.bodyB 

    //check to see if the bodies in contact match 
    //the category mask numbers you defined 
    //here the conditional is set to say that either of the bodies 
    //in contact match the categoryBitMask number set in the GameScene.sks file 

    //using && may not work depending on how the categoryBitMask identifiers 
    //are assigned by the physicsContactDelegate 

    if bodyA.categoryBitMask == catCategory || bodyB.categoryBitMask == catCategory { 

     print("contacted") 

     } 
    } 
} 


override func update(_ currentTime: TimeInterval) { 
    // Called before each frame is rendered 
} 
} 

Answer 2

あなたは関数が間違って綴ら：

次に、あなたのGameScene.swiftの内側に、あなたのdidBegin接触機能は、次のようになります。それは決して呼ばれていません。これは、正しいプロトコル関数名です。

func didBegin(_ contact: SKPhysicsContact) { 
    // Your stuff here.. 
} 

この問題を回避するには、オートコンプリートを使用できます。 「didbegin」を入力し始めると、あなたはXcodeのは正しい機能に必要事項を記入しています：

---

を余談：

をまた、あなたは、後に問題を引き起こす可能性があり、ハードコードの文字列を使用しています。おそらくあなたは、文字列内の潜在的な将来のスペルの間違いを避けるために、一定値または構造体を使用して試みることができる：

let names = (cat: "cat", spinnynode: "spinnynode") 

// cat.name = names.cat, etc... 

func didBeginContact(contact:SKPhysicsContact){ 
    // ... 
    if contact.bodyA.node?.name == names.cat 
    { 
    firstBody = contact.bodyA 
    secondBody = contact.bodyB 
    } 
    else{ 
    firstBody = contact.bodyB 
    secondBody = contact.bodyA 
    } 

    if firstBody.node?.name == names.cat && secondBody.node!.name == names.spinnynode { 
    print("contacted") 
    } 
}