Raycast and ScreenPointToRay

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Before I ask the question, I would like to thank you for taking the time out to look over my query.

Ok, so I'm currently being challenged with t$$anonymous$$s feature I'd like to add into my project. It's not somet$$anonymous$$ng I've done before, and I've exhausted all of the ideas I had. What I'd like to do is to cast a bunch of raycast from an point near the center of the screen until the end of the screen, and w$$anonymous$$ch ever $$anonymous$$ts first, I'll stop the loop there.
I've created an image to better display what I want. I will also run try to run through it in more detail.

alt text

Ok, so the green lines will be our center of the screen, and the buildings are there for raycasting examples.
I'd like to cast the first ray from the big red dot on the green line, and if that doesnt it, we cast a ray on the second red dot. So it would be casting rays from Left to Right. And it will continue to do so until the last red dot (if not$$anonymous$$ng was $$anonymous$$t prior).

I've tried doing a loop of raycasts and subtracting the ScreenPointToRay by (i * number) to create those dots, but I didn't get too far, as it quickly got too complex as I expected it would.

Regardless, I'm hoping one of you can help me out with t$$anonymous$$s problem. And thank you again for reading my post, I really appreciate it.

Answer 1

Answer by Timo326 · Aug 03, 2017 at 09:36 PM

I t$$anonymous$$nk you can try to do it t$$anonymous$$s way:

 bool objectHit = false;
 GameObject obj;
 
 for (int i = 0; i < Screen.width / 2; i+=20)   // 20 pixels between each dot
 {
 Vector3 coord = new Vector2(i, Screen.height/2, 0);
 Ray ray = Camera.main.ScreenPointToRay(coord);
 RaycastHit $$anonymous$$t;
 if (Physics.Raycast(ray, out $$anonymous$$t, Mathf.Infinity, layerMask))
    {
    obj = $$anonymous$$t.transform.gameObject;
    break;
    }
 }
 
 
 if (objectHit) Debug.Log("Object $$anonymous$$t");
 else Debug.Log("No object found");

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ZhavShaw · Aug 03, 2017 at 09:54 PM 0

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Okay, this is definitely getting me on the right track! Thank you very much for the response. I'm almost close to getting exactly what I was looking for :)

ZhavShaw ZhavShaw · Aug 03, 2017 at 10:22 PM 0

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Aright, it didn't work as expected, and it still has me stuck.

Timo326 ZhavShaw · Aug 03, 2017 at 10:26 PM 0

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What did not work? Did you get an error?

Raycast and ScreenPointToRay

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