swift – 在运行时更改SpriteNode PhysicsBody大小
发布时间:2020-12-14 05:02:12 所属栏目:百科 来源:网络整理
导读: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,还无法找到如何执行此操作. 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 nodeHe
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,还无法找到如何执行此操作.
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(这不起作用): nodeHero.size.height = 28 nodeHero.physicsBody?.size.height = 28 但我必须再次使用nodeHero.physicsBody = SKPhysicsBody(),它会重置所有其他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 解决方法
According to SpriteKit documentation SKPhysicsBody的区域无法修改,因此您需要创建另一个SKPhysicsBody实例并复制要保留的值与上一个实例.
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