# Custom Class groups?
**URL:** https://discussions.unity.com/t/custom-class-groups/660057
**Category:** Scripting
**Tags:** Scripting
**Created:** [March 31, 2017, 12:42pm UTC](https://discussions.unity.com/t/custom-class-groups/660057 "2017-03-31T12:42:33Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Comafly](https://discussions.unity.com/u/Comafly)
#### Post date: [March 31, 2017, 12:42pm UTC](https://discussions.unity.com/t/custom-class-groups/660057/1 "2017-03-31T12:42:33Z")
Hi all. So in Unity you can attach different collider components to objects - box collider, capsule collider, mesh collider, etc.
But say for instance you wanted to reference the collider on a number of objects all with different collider types, you can just say GetComponent() and it will automatically return a collider on that object regardless of what type of collider it is.
Is there a way to set this up for custom classes? For example, I have a number of different door locks - tumbler, combination, electronic - that I have on different objects. Is there a way for me to say GetComponent() and have it return any of those lock types?
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### Author:  [@Comafly](https://discussions.unity.com/u/Comafly)
#### Post date: [March 31, 2017, 12:50pm UTC](https://discussions.unity.com/t/custom-class-groups/660057/2 "2017-03-31T12:50:52Z")
Well I just had a thought that maybe it had to do with inheritance. All my door locks derive from the base class Lock(). Sure enough I just did GetComponent() and it worked like a charm for every lock type.
That was easy! I’ll leave this here in case anyone searches it in the future.
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### Author:  [@Kwinten](https://discussions.unity.com/u/Kwinten)
#### Post date: [March 31, 2017, 12:51pm UTC](https://discussions.unity.com/t/custom-class-groups/660057/3 "2017-03-31T12:51:18Z")
What you are described is known as [inheritance](https://msdn.microsoft.com/en-us/library/ms173149.aspx?f=255&MSPPError=-2147217396)in object-oriented programming. When you create a Component in Unity, it inherits from MonoBehaviour by default.
You would need to create a base class “Lock”. Other lock types, such as “ElectronicLock” can inherit from this type. If you add the ElectronicLock Component to a GameObject, this is the instance which will be returned when you call GetComponent on that GameObject.
Edit: well, looks like you figured it out on your own.
---
### Author:  [@LaneFox](https://discussions.unity.com/u/LaneFox)
#### Post date: [March 31, 2017, 12:59pm UTC](https://discussions.unity.com/t/custom-class-groups/660057/4 "2017-03-31T12:59:53Z")
Interfaces also provide similar functionality without forcing inheritance. You may want to check them out as well.
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### Author:  [@johne5](https://discussions.unity.com/u/johne5)
#### Post date: [March 31, 2017, 1:04pm UTC](https://discussions.unity.com/t/custom-class-groups/660057/5 "2017-03-31T13:04:41Z")
yes, you just need to setup a public enum
```csharp
public class Lock : MonoBehaviour
{
public LockTypes _locktype;
public enum LockTypes
{
tumbler,
combination,
electronic
}
public LockTypes getCurrentType
{
get { return _locktype; }
private set { _locktype = value; }
}
}
```
So you should be able to do
GetComponent().getCurrentType