In this example there is no game object with that name, so the Find() function returns null. The code simply looks for a game object called “wibble”. (class-GameObject.html)See in (Glossary.html#GameObject) go = GameObject.Find("wibble") A GameObject's functionality is defined by the Components attached to it. _GameObject_ The fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. In this example, the code is: //c# example This makes the Null Reference Exception easy to find and fix. Also, the message says that the exception happened inside the Start() function. This error message says that a NullReferenceException happened on line 10 of the script file Example.cs. The error message will look something like: NullReferenceException: Object reference not set to an instance of an objectĪt Example.Start () in /Unity/projects/nre/Assets/Example.cs:10 When you get a NullReferenceException in your code it means that you have forgotten to set a variable before using it. Hence, if you try and access the object that is being referenced and there isn’t one, you will get a NullReferenceException. Reference types default to null to indicate that they are not referencing any object. Reference variables in c# and JavaScript are similar in concept to pointers in C and C++. The run-time will tell you that you are trying to access an object, when the variable is null by issuing a NullReferenceException. If a reference variable isn’t referencing an object, then it’ll be treated as null. A NullReferenceException happens when you try to access a reference variable that isn’t referencing any object.
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