我希望能够在用户向下滑动时更改节点的 physicsBody 高度,但除了重置整个 physicsBody 之外还没有找到如何执行此操作的方法。
当我最初加载节点时,我使用以下代码:
nodeHero.color = UIColor .grayColor()
nodeHero.size.width = 20
nodeHero.size.height = 45
nodeHero.position.x = -frame.size.width/2 + 45
nodeHero.position.y = pointMainY + 30 + nodeHero.size.height/2
nodeHero.zPosition = 110
nodeHero.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(nodeHero.size.width, nodeHero.size.height))
nodeHero.physicsBody?.mass = 1
nodeHero.physicsBody?.angularVelocity = 0
nodeHero.physicsBody?.allowsRotation = false
nodeHero.physicsBody?.restitution = 0
nodeHero.physicsBody?.categoryBitMask = bitHero
addChild(nodeHero)
当我向下滑动时,我希望能够做这样的事情(这行不通):
nodeHero.size.height = 28
nodeHero.physicsBody?.size.height = 28
但是我必须再次使用 nodeHero.physicsBody = SKPhysicsBody() ,这会重置所有其他 physicsBody 属性,所以我必须这样做:
nodeHero.size.height = 28
nodeHero.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(nodeHero.size.width, nodeHero.size.height))
nodeHero.physicsBody?.mass = 1
nodeHero.physicsBody?.angularVelocity = 0
nodeHero.physicsBody?.allowsRotation = false
nodeHero.physicsBody?.restitution = 0
nodeHero.physicsBody?.categoryBitMask = bitHero
最佳答案
According to SpriteKit documentation不能修改 SKPhysicsBody 的区域,因此您需要创建另一个 SKPhysicsBody 实例并从上一个实例复制您想要保留的值。
关于swift - 在运行时更改 SkspriteNode PhysicsBody 大小,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31323559/