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这是我的代码:
let skView = self.view as! SKView skView.showsPhysics = true
但是我不断收到错误消息:
SKView 垂头丧气?到 SKView 仅 uwraps 选项;你的意思是使用!?
这可能是一个简单的修复,但我是 swift 新手,我无法弄清楚。