find out if GameObject has a compenent?

is there a way to check via code if a GameObject has a component (if a component exists for that GameObject)?

 

Yup, GetComponent(). If the game object has the component then a reference to it is returned, if not then null is returned. Done!

 

thanks mister!

 

Here's a weird one... I'm doing this exact check, but receiving an error that I need to do this check.

Here's my code:

Code (csharp):

1.  
2. if(gameObject.GetComponent<TouchInputAgent>() == null)
3.     return;
4.  

With that code, the following error periodically occurs on the line that does the null check (maybe one out of every 4 times) whenever the object containing this component is destroyed from the world:

Any thoughts on what could be happening there?

 

I have an even weirder case: I have two scripts to control the players in my game, one is for the user, one controls CPU slots. What i want to do is sort an array of objects where the possibility of both scripts showing up is 50/50. how do i get the right component so that the returned value is correct?

 

I know this is super old, but I thought this might help someone:

Your issue is due to Unity overriding the '==' operator. They use this to make objects act as null before they are *really* removed/null. See here for more info: http://blogs.unity3d.com/2014/05/16/custom-operator-should-we-keep-it/

The solution in your problem would be to use ?? or Equals()