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Question by temp6532 · Feb 03, 2018 at 12:58 PM · raycastraycastingraycasthit2d

Detect when Raycast DOESN'T hit layer.

Hello, Is there's a way to detect when a raycast doesn't hit a specific layer, and then still have the raycast object to pull coordinates from the point where the raycast occurred. Like some sort of negative raycast.

I have a layer called platforms and I want to raycast starting from a point WITHIN that layer. From there, I want to detect when the raycast hits not platforms .

Is this possible?

Thanks.

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avatar image meat5000 ♦ · Feb 03, 2018 at 01:02 PM 0
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 if(raycast)


 if(!raycast)

No?

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Answer by T0mC · Feb 03, 2018 at 05:05 PM

if the platform was layer 8 you'd use this to get the layer mask, ~ just negates the selection in the second line then you would use layerMask as the final parameter in the raycast

  LayerMask layerMask = (1 << 8);
  layerMask = ~layerMask;

  Physics.Raycast(transform.position, transform.forward, Hit, Range, layerMask)
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avatar image temp6532 · Feb 05, 2018 at 10:52 PM 0
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Exactly what I needed. Thanks

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