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Collision SKPhysicsBody not working

Below is my class "Floor.swift", below which is basically a bunch of walls. I have objects coming out of the top of the screen, and as soon as the Floor column and SKSpriteNodes collide, I would like to remove SKSpriteNode. Below is my Floor class.

import Foundation
import SpriteKit

class Floor: SKNode {
    override init() {
        super.init()

        let leftWall = SKSpriteNode(color: UIColor.clear, size: CGSize(width: 5, height: 50))
        leftWall.position = CGPoint(x: 0, y: 50)
        leftWall.physicsBody = SKPhysicsBody(rectangleOf: leftWall.size)
        leftWall.physicsBody!.isDynamic = false
        self.addChild(leftWall)

        let rightWall = SKSpriteNode(color: UIColor.clear, size: CGSize(width: 5, height: 50))
        rightWall.position = CGPoint(x: 375, y: 50)
        rightWall.physicsBody = SKPhysicsBody(rectangleOf: rightWall.size)
        rightWall.physicsBody!.isDynamic = false
        self.addChild(rightWall)

        let bottomWall = SKSpriteNode(color: UIColor.clear, size: CGSize(width: 500, height: 10))
        bottomWall.position = CGPoint(x: 150, y: -5)
        bottomWall.physicsBody = SKPhysicsBody(rectangleOf: bottomWall.size)
        bottomWall.physicsBody!.isDynamic = false
        self.addChild(bottomWall)

        self.physicsBody = SKPhysicsBody(bodies: [leftWall.physicsBody!, rightWall.physicsBody!, bottomWall.physicsBody!])

        self.physicsBody?.categoryBitMask = floorCategory
        self.physicsBody?.contactTestBitMask = nailDropCategory | pointCategory | lifeCategory
        self.physicsBody?.collisionBitMask = balloonCategory
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemted")
    }
}

The GameScene class under "func didBegin (_ contact: SKPhysicsContact)" I wrote:

func didBegin(_ contact: SKPhysicsContact) {        
        if (contact.bodyA.categoryBitMask == nailDropCategory | pointCategory | lifeCategory) && (contact.bodyB.categoryBitMask == floorCategory) {
           // contact.bodyB.node!.removeFromParent()
            print("COLLISION")
        }
}

As you can see, in my Floor class, I set the object as "self.physicsBody = SKPhysicsBody (body :)" with all my SKSpriteNode. But for some reason, I did not find that it was so. I made my class "Floor" "contactTestBitMask" for each object class objectCategory, pointCategory, lifeCategory. Is this a question that Iā€™m stuck for a minute, any ideas?

Update:

, , ! , "balloonCategory", , . , ?

func didBegin(_ contact: SKPhysicsContact) {
        let contactMask = contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask

        switch contactMask {
        case balloonCategory | nailDropCategory:
            print("nailDrop and balloon have contacted.")
            contact.bodyB.node!.removeFromParent()
            self.run(SKAction.playSoundFileNamed("lostlifesound.mp3", waitForCompletion:false))
            lifeLost -= 1
        case balloonCategory | pointCategory:
            print("point and balloon have contacted.")
            contact.bodyB.node!.removeFromParent()
            totalPoints += 2
            self.run(SKAction.playSoundFileNamed("pointsound.mp3", waitForCompletion:false))
        case balloonCategory | lifeCategory:
            print("life and balloon have contacted.")
            contact.bodyB.node!.removeFromParent()
            lifeLost += 1
            self.run(SKAction.playSoundFileNamed("pointsound.mp3", waitForCompletion:false))
        default:            
            contact.bodyB.node!.removeFromParent()
            print("Removed \(String(describing: contact.bodyB.node!.name))")
        }
    }
+6
2

, , :

class Balloon: SKSpriteNode {
    init() {
        super.init(texture: nil, color: .blue, size: CGSize(width: 50, height: 50))
        self.name = "balloon"
    }
}

, , , . . , , . , node , . .

func didBegin(_ contact: SKPhysicsContact) {
    let contactMask = contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask

    switch contactMask {
    case balloonCategory | nailDropCategory:
        print("nailDrop and balloon have contacted.")
        contact.bodyB.node!.removeFromParent()
        self.run(SKAction.playSoundFileNamed("lostlifesound.mp3", waitForCompletion:false))
        lifeLost -= 1
    case balloonCategory | pointCategory:
        print("point and balloon have contacted.")
        contact.bodyB.node!.removeFromParent()
        totalPoints += 2
        self.run(SKAction.playSoundFileNamed("pointsound.mp3", waitForCompletion:false))
    case balloonCategory | lifeCategory:
        print("life and balloon have contacted.")
        contact.bodyB.node!.removeFromParent()
        lifeLost += 1
        self.run(SKAction.playSoundFileNamed("pointsound.mp3", waitForCompletion:false))
    default:
        if contact.bodyB.node!.name == "balloon" {
            print("Balloon collided but we will not remove it.")
            return
        } else {
            contact.bodyB.node!.removeFromParent()
            print("Removed \(String(describing: contact.bodyB.node!.name))")
    }
}
+5

, nodeB nodeA nailDropCategory | pointCategory | lifeCategory?

, naildDrop, point life - 3 , , - floor, didBegin(contact:) :

  func didBegin(_ contact: SKPhysicsContact) {
     print("didBeginContact entered for \(String(describing: contact.bodyA.node!.name)) and \(String(describing: contact.bodyB.node!.name))")

     let contactMask = contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask

     switch contactMask {
     case nailDropCategory | FloorCategory:
        print("nailDrop and floor have contacted.")
     case pointCategory | FloorCategory:
        print("point and floor have contacted.")
     case lifeCategory | FloorCategory:
        print("life and floor have contacted.")
     default:
        print("Undetected collision occurred")
     }
 }

floor?

+1

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