How to GetComponent from Class that uses Generics

Questions & Answers
1

Hi, i’m tweaking a State Machine Class that allows to work with Generics to simplify work. I’m getting an error that i can’t decode:

Assets/Scripts/Entities/Character.cs(60,33): error CS0309: The type `StateMachine<Character>' must be convertible to `UnityEngine.Component' in order to use it as parameter `T' in the generic type or method `UnityEngine.Component.GetComponent<T>()'

Here’s the code i’m using:

_stateMachine = GetComponent<StateMachine<Character>>();

And The State Machine Class format:

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class StateMachine<T> where T : MonoBehaviour {
	
	private List<State<T>> _states = new List<State<T>>();
	
	public void onState()
	{
	}
	public void setState(int state)
	{

	}
	/// <summary>
	/// Adds the state.
	/// </summary>
	/// <param name='s'>
	/// a state component.
	/// </param>
	public void addState(State<T> s)
	{
	}

}

Character Class extends MonoBehaviour, so i don’t understand what it’s the nature of the problem.

Any ideas??

Thanks in advance.

Francisco.

2

Well it says right there, Statemachine must be convertible to Component. Statemachine must itself be a component. (MonoB is a child of Component).

If it’s possible to do it’ll look like this:

public class StateMachine< T > : MonoBehaviour where T : MonoBehaviour

You might have more luck with StateMachine as a parent class/interface rather than a generic.