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GameObjects -> Create Other

Discussion in 'Editor & General Support' started by Steffen, Aug 17, 2005.

  1. Steffen

    Steffen

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    Aug 11, 2005
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    70
    Hi,

    we extends the GameObject class and want to know how we can add this class to the "GameObjects -> Create Other" menu ?

    Ah and a other question is it is possible to use namespaces in c# classes in unity ?
     
    Steffen, Aug 17, 2005
    #1

  2. Joachim_Ante

    Joachim_Ante

    Unity Technologies

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    Scripts in C# should only derive from MonoBehaviour.
    Otherwise you can't add them to a game object.

    You can't add menu items to unity from scripting at the moment.
    Instead you can create a prefab with everything setup up and then just drag and drop those prefabs into the right place.
    http://otee.dk/Documentation/Manual/Prefabs.html

    At the moment you can't use namespaces for scripts in C#.
     
    Joachim_Ante, Aug 17, 2005
    #2

  3. Steffen

    Steffen

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    thx for the fast answer but how can i create a prefab from c# ?
     
    Steffen, Aug 17, 2005
    #3

  4. Joachim_Ante

    Joachim_Ante

    Unity Technologies

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    Do you mean instantiate a prefab from C#?

    What exactly are you trying to do?
     
    Joachim_Ante, Aug 17, 2005
    #4

  5. Steffen

    Steffen

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    yep.

    We want to build a GameObject that represent a monster. Every monster have the same scripts to interact with the environment/game logic plugin. Now we want a easy way to create this game object in scripts and the editor.

    I thought the best way is to extend the GameObject class but our level-designer cant create the extended gameobjects in the editor :-(
     
    Steffen, Aug 17, 2005
    #5

  6. Joachim_Ante

    Joachim_Ante

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    The way it normally works is like this:

    1) Create the monster in the scene.
    2) Then create a new prefab in the project view.
    3) Drag the monster onto the prefab in the project view.


    Then you can instantiate the prefab as often as you want in your scenes.
    When you change the prefab, all scenes reflect the change.

    If you want to instantiate at runtime from scripts, use the Instantiate function:
    http://www.otee.dk/Documentation/ScriptReference/Object.html#Instantiate
     
    Joachim_Ante, Aug 17, 2005
    #6

  7. Steffen

    Steffen

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    but one monster have to be in the scene always or?
     
    Steffen, Aug 17, 2005
    #7

  8. Joachim_Ante

    Joachim_Ante

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    A prefab is stored in the project folder. Thus it is not in the scene.
     
    Joachim_Ante, Aug 17, 2005
    #8

  9. Steffen

    Steffen

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    okay.

    1) i created a prefab called "monster1"
    2) i drag "monster1" to the scene
    3) i duplicate "monster" from script
    4) i deleted the "monster1" from the scene
    5) i want to duplicate it again
    6) error null pointer exception with GameObject.FindGameObjectWithTag(...);
    7) i want use GameObject.FindObjectsOfTypeIncludingAssets(...); but i dont know the type of a prefab :-(
     
    Steffen, Aug 17, 2005
    #9

  10. Joachim_Ante

    Joachim_Ante

    Unity Technologies

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    A prefab to the scripting is just like any other game object which is inactive.

    Now i think you will be much better off if you create a direct link to the monster prefab by adding a public variable in the script you use to instantiate the prefab:
    public GameObject monster;

    Then you assign the monster1 prefab to the monster variable, in the inspector of the object you attached the script to.

    This way you don't need to search for the prefab but you just have a variable and can use and instantiate it right away.
     
    Joachim_Ante, Aug 17, 2005
    #10

  11. Steffen

    Steffen

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    thx.

    i have a last q for today.

    why i get with this code

    UnityEngine.Object[] a = GameObject.FindObjectsOfTypeIncludingAssets(typeof(UnityEngine.GameObject));
    for(int i=0;i<a.Length;i++) {
    Debug.Log("name: "+a.name);
    }

    only gameobjects that are/wasnt placed on scene and not all gameobjects in the project ?
     
    Steffen, Aug 17, 2005
    #11

  12. Joachim_Ante

    Joachim_Ante

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    Because the assets haven't been loaded yet.
    All assets in unity are loaded on demand.

    This is why the documentation warns about using the function.

    The name is misleading i see. I'll fix that.
     
    Joachim_Ante, Aug 17, 2005
    #12

  13. Steffen

    Steffen

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    new day new questions :)

    how can i load/unload assest from c# ?
     
    Steffen, Aug 17, 2005
    #13

  14. NicholasFrancis

    NicholasFrancis

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    You just make a property that points to it. The first time you use the asset, it gets loaded automatically.

    Unloading happens automatically as well when you load a new scene.
     
    NicholasFrancis, Aug 18, 2005
    #14

  15. Steffen

    Steffen

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    thx for the very very nice support :)
     
    Steffen, Aug 18, 2005
    #15