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Start your free trialDewan Payroda
1,954 PointsSKPhysicsContact Not Detecting categoryBitMask Collision
So I have my "Floor.swift" class below which is basically a bunch of walls. I have objects coming from the top of the screen and once the Floor and SKSpriteNodes collide, I'd like the SKSpriteNode to be removed. Below is my Floor class.
import Foundation import SpriteKit
class Floor: SKNode {
override init() {
super.init()
let leftWall = SKSpriteNode(color: UIColor.brown, 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.brown, 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.brown, 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)
// Set the bit mask properties
self.physicsBody?.categoryBitMask = floorCategory
self.physicsBody?.contactTestBitMask = objectCategory | pointCategory | lifeCategory
self.physicsBody?.collisionBitMask = dodgeCategory
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemted")
}
}
Then in my GameScene class under "func didBegin(_ contact: SKPhysicsContact)
" I wrote:
if (contact.bodyA.categoryBitMask == floorCategory) && (contact.bodyB.contactTestBitMask == objectCategory | pointCategory | lifeCategory) { contact.bodyB.node!.removeFromParent() print("COLLISION") }
But for some reason I'm not getting any detection what's so ever. I made my "Floor" class be a "contactTestBitMask" on each class of my objectCategory, pointCategory, lifeCategory. What am I doing wrong!? My other collisions are detected but not this one.I tried doing "let ourUnionOfBodies = SKPhysicsBody(bodies: [leftWall.physicsBody!, rightWall.physicsBody!, bottomWall.physicsBody!])" and following that I wrote on the next line "ourUnionOfBodies.isDynamic = false" but it still doesn't work? I don't see no collision detection they just fall right through.