OnMouseDown() Doesn't work

Question

Hello, I usually never have problems with this, but somehow I can't get the OnMouseDown() to work. This is my code:

 using UnityEngine;
 using System.Collections;
 
 public class Menu : MonoBehaviour {
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
     
     }
     
     
     
      void OnMouseDown() {
         Debug.Log("Clicked");
     }
 }

I have tryed with other stuff instead of Debug.Log("Clicked"); but it doesn't detect the click at all.

I have a collider on my gameobject. The script is attached to the same gameobject as the collider.

I don't know what can be causing this, but that's why I ask here ;)

Thanks, Andreas :-)

Answer 1

Best Answer

Answer by robertbu · Jul 04, 2013 at 07:26 PM

Make sure the script is attached to the game object you want to be clickable.
Make sure you have an enabled collider
Make sure you have not resized or changed the position of the collider
Make sure there are no other colliders in the way. OnMouseDown() works just like a Raycast()...the first thing hit is what gets the OnMouseDown().
If everything looks okay and it still does not work, delete the object and start over by adding the new object, adding the script...

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Answer 2

Wiki

Answer by Turbine · Apr 25, 2014 at 02:12 AM

Necro post for prosperity:

OnMouseDown works completely differently if there is a RigidBody somewhere in the hierarchy. It actually won't call OnMouse functions on the clicked object but it will instead call them on the RigidBody's game object instead!

In pseudo code:

 void UnityApiMouseEvents()
 {
 RaycastHit hit;
 if ( Physics.Raycast(hit))
 {
  if ( hit.rigidbody != null )
      hit.rigidbody.gameObject.SendMessage("OnMouseDown");
  else
      hit.collider.SendMessage("OnMouseDown");
 }
 
 }

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Mikael-H · May 05, 2014 at 08:57 PM 0

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Thanks, you saved my day.. :)

Erethan · Jul 26, 2016 at 11:05 PM 0

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I've been looking for this for ages! Thanks! Why is that not mentioned on the Docs??

Melann · Sep 07, 2017 at 02:53 PM 0

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Yes, thank you for necro-posting. It is 2017 and the difference in behavior introduced by a rigidbody in the hierarchy is still not mentioned in the documentation.

vonSchlank · Jan 02, 2018 at 09:31 AM 1

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Thanks! Eternal life and free beer for you!

zingzingzingbah · Apr 16, 2018 at 09:42 AM 0

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Ahhh man...THAN$$anonymous$$ YOU... but why??

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Answer 3

Answer by NateJC · Dec 20, 2016 at 04:37 AM

For UGUI UI objects, instead of OnMouseDown, use OnPointerDown:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 using UnityEngine.EventSystems; // Required when using Event data.
 
 public class ExampleClass : MonoBehaviour, IPointerDownHandler // required interface when using the OnPointerDown method.
 {
     public void OnPointerDown (PointerEventData eventData) 
     {
         Debug.Log (this.gameObject.name + " Was Clicked.");
     }
 }

Alternatively, this can also be handled in the Inspector by adding an Event Trigger component.

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zaxdivine · Aug 20, 2018 at 03:53 PM 0

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Thanks! It worked.

Zeftax · Apr 18 at 06:55 PM 0

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This was the solution for me, thanks.

Answer 4

Answer by anthodb · Jan 16, 2015 at 10:53 AM

Just to add my little part in this, I was having OnMouseDown not firing at all on my gameObject. Did try everything for about one hour to finally close Unity (4.5.5) and re-open. That did the trick !!

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KevinCodes4Food · Mar 28, 2015 at 12:24 AM 0

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Thanks, anthodb, this just happened to me, and your recommendation to close and reopen Unity fixed it.

I am running Unity v4.6.0f3 on Windows 8.1. Wonder if this is a known bug...

idiot333 · Apr 18, 2015 at 08:44 PM 0

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Thanks bro that helped me too.

Black_Stormy · Aug 19, 2017 at 11:54 PM 0

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No idea why but this worked for me as well EDIT: worked once then stopped working forevermore.

Answer 5

Answer by bakinto · May 20, 2020 at 03:58 AM

This may seems so stupid, but make sure you click on your game window and not the view!! that's what happened with me, and almost lost it before I realise im clicking on th view not the game widow :T lol

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OnMouseDown() Doesn't work

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