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Question by paulmario777 · Jan 28, 2018 at 06:55 PM · cameraraycastingmousepositionhit.point

Raycast object flies towards mouse on screen, i need it on floor

I am trying to raycast a "cursor" object on to the terrain below from the camera using the mouse's position, but for some reason the object I am raycasting is flying towards the mouse and not staying on the ground.

Here is my code:

 public Camera MainCam;


 void Update () {
     //pointCursor
     RaycastHit hit;    
     Ray ray = MainCam.ScreenPointToRay(Input.mousePosition);
     if (Physics.Raycast (ray, out hit)) {
         transform.position = hit.point;
     }
 }

UPDATE: FIXED, just needed to add a layermask

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avatar image vuongdang408x · Apr 26, 2021 at 06:56 PM 0
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Hi, do you $$anonymous$$d showing me how you use layermask to solve the problem? I'm having it too

avatar image light_lingo vuongdang408x · May 17, 2021 at 10:00 AM 0
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Add a layer and apply it to the object the ray will cast on, and apply it in the Unity inspector as well.

     public LayerMask meshLayer;
     ....
     if (Physics.Raycast(ray, out hit, 1000, meshLayer)){
    ...
 
     }

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Answer by victorbisaev · Jan 28, 2018 at 11:57 PM

If the "hit.point" is closer to the camera than "transform.position" then it moves the object closer to the camera with every "Update" if the object is successfully raycasted because of "transform.position = hit.point".

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