#nullable enable
using System.Collections;
using UnityEngine;
using UnityEngine.Rendering;

public class BlurFade : MonoBehaviour {
	Volume volume = null!;
	Coroutine? coroutine;
	bool blurred;
	[SerializeField] [Range(0f, 1f)]
	float transitionSpeed = 0.2f;
	
	void Awake() => volume = GetComponent<Volume>();

	public void SetBlurred(bool value) {
		blurred = value;
		coroutine ??= StartCoroutine(BlurCoroutine());
	}

	IEnumerator BlurCoroutine() {
		while (blurred ? volume.weight <= 1f : volume.weight >= 0f) {
			volume.weight += transitionSpeed * (blurred ? 1f : -1f);
			yield return null;
		}

		coroutine = null;
	}
}