Halo AddComponent problems

Question

How do I add a Halo component, the Halo class is sealed and AddComponent("Halo") is deprecated. I know you can use a prefab, but I need to be able to do it programmatically.

Examples:

 Behaviour halo = gameObject.AddComponent<Halo>();

Error: 'Halo' Inaccessible due to protection level

 Behaviour halo2 = (Behaviour)gameObject.AddComponent("Halo");

Error: "GameObject.AddComponent with string argument has been deprecated. Use GameObject.AddComponent() instead. (UnityUpgradable)."

edit: it's the built in Halo class:

https://docs.unity3d.com/Manual/class-Halo.html

namespace UnityEngine internal sealed class Halo : Behaviour

Any solutions?

Answer 1

Best Answer

Answer by Hellium · Mar 23, 2020 at 11:55 PM

The following solution uses Reflection.

Often, when the classes are internal / private, it's because there is a good reason. You should handle the following with care.

 // At the top of the script
 using System.Linq;
 using System.Reflection;

 // In your function
 var types = Assembly.Load("UnityEngine.CoreModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null").GetTypes();
 Type haloType = types.First(t => t.Name.Equals("Halo"));
 gameObject.AddComponent(haloType);

I haven't been able to dig deeper and change the value of the fields size and color at runtime, even with reflection. Not sure it is possible.

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abedecain · Mar 24, 2020 at 11:12 PM 0

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Thanks, I think it may be a mistake since it was possible before they depreciated that function

Halo AddComponent problems

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