Question

我有两个SKSpriteNodes，我想保持相同的位置。 newLeftObject和newLeftObjectBackground。制作它的最佳方法是使两个物体即使施加力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，但它们在下降时仍然会有稍微不同的位置。谢谢，任何帮助表示赞赏！

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

}

Answer 1

使用addChild（）

让一个孩子成为另一个孩子

如何让两个SKSpriteNodes始终具有相同的位置？

1 个答案: