[英]Swift: Event for when node leaves SKCameraNode's view?
Suppose: 假设:
SKSpriteNode
, node , off doing its own thing 你有一个SKSpriteNode
, node ,自己去做 SKCameraNode
, cam , to dictate what the player can see 您已经实现了SKCameraNode
, cam ,指示玩家可以看到的内容 func onScreen(camera:SKCameraNode) -> Bool {
if camera.contains(self) { return true }
else { return false }
}
Question How can one add an event listener to node so that when node transitions from within the camera's view to out of the camera's view, it triggers or calls a function? 问题如何向节点添加事件侦听器,以便当节点从摄像机视图内过渡到摄像机视图外时,它触发或调用一个函数?
您可以将PhysicsBodies添加到您的节点以及摄像机周围的“特殊边界”节点,然后可以使用物理委托来通知您的节点是否与边界节点相交。
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