Hello, I simply tried the statement var a = 🙉 in a new iPhone/iPad Swift Project, and I get the error from the Xcode text editor: "cannot find 🙉 in scope" I suppose there is an option somewhere in the Project parameters which enables emojis ... but where ? thank's for any clue!

Hi, just fresh beginner with sceneKit, I got a problem I can't understand nor work around ... the idea: a lunar module "Eagle" landing on the Moon. A camera and a spotlight are supposed to track it. All nodes have been created in a scene with the scene editor and/or directly coded from SCN routines. the code: camera = sceneView.scene!.rootNode.childNodes.filter({ $0.name == "theCamera" }).first! //-> got it theEagle = sceneView.scene!.rootNode.childNodes.filter({ $0.name == "Eagle2" }).first! //- got it too spotLight = sceneView.scene!.rootNode.childNodes.filter({ $0.name == "theSpotLight" }).first! // done. ... then the constraints: let cameraLookAtTheEagle = SCNLookAtConstraint(target: theEagle) let spotLookAtTheEagle = SCNLookAtConstraint(target: theEagle) let cameraLookAtTheEagle.isGimbalLockEnabled = true let spotLookAtTheEagle.isGimbalLockEnabled = true let camera.constraints    = [cameraLookAtTheEagle] let spotLight.constraints = [spotLookAtTheEagle] ... The problem is: when my Eagle starts moving up and down, it is perfectly tracked by the spot, but ignored by the camera ... and of course gets quickly out of the field. I tried to use one only constraint for both of them: same result I tried to implement the constraints with the scene editor: same result I tried to implement the camera and the spot directly in the code: same result tried to set the isGimbalLockEnabled = false: same result I even try to change the order of the actions on spot and camera ... same result Whatever I tried, the camera refuses to move a inch ... So where's the problem ? Why does the spot always do the job, and why doesn't the camera do it? Any advice or clue will be welcome like fresh water in the desert ... Thanks.