"Inside" style game camera

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How to make side scroller camera like Playdead's Inside?

How would you script a camera like the one from Inside? Guessing it goes on a spline parallel with a spline the character’s on, but how does it move independently of the character, sometimes moving farther left and sometimes farther right than the character? The camera can also move in or out at certain points as the character walks forward, and the camera movement is reversed if the character walks backward. Here’s a link to a walkthrough of Inside on YouTube. Skip to 1:00 to see the types of…

A couple of different approaches.