我有两个 SKSpriteNode，我想保持相同的位置。 newLeftObject 和 newLeftObjectBackground。最好的方法是什么使两个物体即使在对它们施加力时也始终保持相同的位置。我尝试将它们的质量和密度设置为彼此相等，但它们在下落时的位置仍然略有不同。谢谢，感谢您的帮助!

func createNewObjectLeftAndMoveToCenter() {

    colorBackground.removeFromParent()
    blackBackground.removeFromParent()

    var newLeftObject = SKSpriteNode()
    var newRightObject = SKSpriteNode()

    var newLeftObjectBackground = SKSpriteNode()
    var newRightObjectBackground = SKSpriteNode()


    var distance = sqrt(((colorBackground.size.width / -2) - (verticalTarget.position.x)) * ((colorBackground.size.width / -2) - (verticalTarget.position.x)))

    var distanceToCenter = sqrt(((0 - (verticalTarget.position.x))) * (0 - (verticalTarget.position.x)))



    newLeftObject.size = CGSize(width: distance, height: colorBackground.size.height)
    newLeftObject.position = CGPoint(x: verticalTarget.position.x - (newLeftObject.size.width / 2), y: colorBackground.position.y)
    newLeftObject.color = colorBackground.color
    newLeftObject.zPosition = 30
    addChild(newLeftObject)

    newLeftObjectBackground.size = CGSize(width: distance + 14, height: blackBackground.size.height)
    newLeftObjectBackground.position = CGPoint(x: verticalTarget.position.x - (newLeftObject.size.width / 2), y: colorBackground.position.y)
    newLeftObjectBackground.color = UIColor.black
    newLeftObjectBackground.zPosition = 20

    addChild(newLeftObjectBackground)

    newRightObject.size = CGSize(width: distanceToCenter + colorBackground.size.width / 2, height: colorBackground.size.height)
    newRightObject.position = CGPoint(x: verticalTarget.position.x + (newRightObject.size.width / 2), y: colorBackground.position.y)
    newRightObject.color = colorBackground.color
    newRightObject.zPosition = 40
    addChild(newRightObject)

    newRightObjectBackground.size = CGSize(width: (distanceToCenter + colorBackground.size.width / 2) + 14, height: blackBackground.size.height)
    newRightObjectBackground.position = CGPoint(x: verticalTarget.position.x + (newRightObject.size.width / 2), y: colorBackground.position.y)
    newRightObjectBackground.color = blackBackground.color
    newRightObjectBackground.zPosition = 35
    addChild(newRightObjectBackground)

    newLeftObject.physicsBody = SKPhysicsBody(rectangleOf: newLeftObject.size)
    newLeftObject.physicsBody?.isDynamic = true
    newLeftObject.physicsBody?.affectedByGravity = true
    newLeftObject.physicsBody?.allowsRotation = true
    newLeftObject.physicsBody?.collisionBitMask = 0
    newLeftObject.physicsBody?.density = 1
    newLeftObject.physicsBody?.mass = 1
    newLeftObject.physicsBody?.applyAngularImpulse(1)

    newLeftObject.physicsBody?.applyForce(CGVector(dx: -10000, dy: 10000))

    newLeftObjectBackground.physicsBody = SKPhysicsBody(rectangleOf: newLeftObjectBackground.size)
    newLeftObjectBackground.physicsBody?.isDynamic = true
    newLeftObjectBackground.physicsBody?.affectedByGravity = true
    newLeftObjectBackground.physicsBody?.collisionBitMask = 0
    newLeftObjectBackground.physicsBody?.density = 1
    newLeftObjectBackground.physicsBody?.mass = 1
    newLeftObjectBackground.physicsBody?.allowsRotation = true
    newLeftObjectBackground.physicsBody?.applyAngularImpulse(1)

    newLeftObjectBackground.physicsBody?.applyForce(CGVector(dx: -10000, dy: 10000))

    newLeftObject.position = newLeftObjectBackground.position

    var moveNewObjectToCenter = SKAction.moveTo(x: 0, duration: 0.25)

    newRightObject.run(moveNewObjectToCenter)
    newRightObjectBackground.run(moveNewObjectToCenter)

    colorBackground = newRightObject
    blackBackground = newRightObjectBackground

}

最佳答案

使用 addChild() 使一个成为另一个的 child

关于swift - 如何让两个 SKSpriteNode 的位置始终相同？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46396994/