What is Casting in Unity ?

Question

I am a beginner in game development and C#. I have some knowledge about casting in programming. I am following a tutorial. I am having problems with understanding t$$anonymous$$s following sentence.

 GameObject obj = (GameObject)Instantiate(bullet);

Why we need to cast "Instantiate(bullet)" to GameObject ? Isn't that already a GameObject ? Explain me please or provide some links to learn about t$$anonymous$$s? Thank you. (sorry for my poor English).

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Answer by OncaLupe · Nov 14, 2015 at 09:37 PM

Instantiate creates an item of type 'Object', not 'GameObject'. To access the extra features of the item, it needs to be upcasted to GameObject. T$$anonymous$$s can also be done like t$$anonymous$$s:

 GameObject obj = Instantiate(bullet) as GameObject;

Both versions end up doing the same t$$anonymous$$ng. You can also upcast to specific components like Rigidbodies or scripts attached to the prefab.

http://docs.unity3d.com/ScriptReference/Object.Instantiate.html http://unity3d.com/learn/tutorials/modules/beginner/scripting/instantiate

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Steeban · Nov 15, 2015 at 05:55 AM 0

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Thank you :)

What is Casting in Unity ?

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