unity 改变颜色透明通道实现闪烁效果 Unity闪烁效果_unity 透明通道 变点点

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

public class RedLightFlash : MonoBehaviour
{
	private HighlightPlus.HighlightEffect highEffect;

	public float Duration = 1;
	Color colora;
	float value = 0;
	bool isUp = false;
	bool isDown = false;


	// Start is called before the first frame update
	void Start()
    {
		highEffect = this.GetComponent<HighlightPlus.HighlightEffect>();
		if (highEffect != null)
		{
			colora = highEffect.outlineColor;
			value = colora.a;
		}
	}

	// Update is called once per frame
	void Update()
	{
		if (highEffect == null) return;
		
		float speed = 1 / Duration;

		if (value >= 1)
		{
			isUp = false; isDown = true;
		}
		if (value <= 0)
		{
			isUp = true; isDown = false;
		}

		if (isUp)
			value += Time.deltaTime * speed;
		if (isDown)
			value -= Time.deltaTime * speed;

		highEffect.outlineColor = new Color(colora.r, colora.g, colora.b, value);
	}
}

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