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Question by Retrogatorade · Aug 08, 2015 at 03:23 PM · colliderinputmousepositiongetmousebuttondown

How to click within a game objects collider?

So I have created a 10x10 grid of squares from quads with their own separate BoxCollider2D and I wanted to, whenever I'm within one of the squares and when it's clicked, to print a statement (any statement would do, it's just to see if it's working).

Here is the code for my Update function:

 void Update () {     
         if (boxColl.bounds.Contains(Input.mousePosition)) {
             if (Input.GetMouseButtonDown (0)) {
                 print ("Hello");
             }
         }
     }

boxColl is a variable that I instantiated earlier to get the component BoxCollider2D.

Now the problem is whenever I click, it doesn't do anything so I was wondering is that because of the read-only property of the Input.mousePosition (because I read the documentation and it returns a Vector3 which you need for the bounds.Contains()) or is it something about colliders and bounds that I don't understand?

Thanks for advance guys!

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avatar image allenallenallen · Aug 08, 2015 at 03:23 PM 1
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Use On$$anonymous$$ouseDown? http://docs.unity3d.com/ScriptReference/$$anonymous$$onoBehaviour.On$$anonymous$$ouseDown.html

avatar image DwaynePritchett · Aug 08, 2015 at 03:25 PM 0
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I could be wrong, but I think the mouse position always has a 0 depth value. Basically, it's 2D. I think people have used raycasting in the past. So, Click, and Cast a ray out at mouse x,y,with a Z forward from camera. Then check the collision, if it hits one of your cubes, begin the interacting code. Something along the lines of that.

-Dwayne Pritchett

avatar image Retrogatorade · Aug 08, 2015 at 03:27 PM 0
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Wow, I can't believe how simple that was with On$$anonymous$$ouseDown, thanks so much, that works!

@Dwayne, the raycasting sounds cool, I will try that too just for fun, thanks!

avatar image DwaynePritchett · Aug 08, 2015 at 04:21 PM 0
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I didn't think it would be as simple as On$$anonymous$$ouseDown either, hm... learn something new everyday.

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