// ***********************************************************************
// Assembly         : Game
// Author           : Kimch
// Created          : 2020-09-29
// Description      :
// Last Modified By : 
// Last Modified On : 
// ***********************************************************************
// <copyright file= "GhostShadow" company="Kunpo"></copyright>
// <summary></summary>
// ***********************************************************************

using System.Collections;
using System.Collections.Generic;
using G;
using UnityEngine;
public class GhostItem : MonoBehaviour
{
	//持续时间
	public float duration;
	//销毁时间
	public float deleteTime;

	public MeshRenderer meshRenderer;

	void Update()
	{
		float tempTime = deleteTime - Time.time;
		if (tempTime <= 0)
		{//到时间就销毁
			GameObject.Destroy(this.gameObject);
		}
		else if (meshRenderer.material)
		{
			float rate = tempTime / duration;//计算生命周期的比例
			Color cal = meshRenderer.material.GetColor("_RimColor");
			cal.a *= rate;//设置透明通道
			meshRenderer.material.SetColor("_RimColor", cal);
		}
	}
}

public class GhostShadow : MonoBehaviour
{
	//持续时间
	public float duration = 2f;
	//创建新残影间隔
	public float interval = 0.1f;

	//边缘颜色强度
	[Range(-1, 2)]
	public float intension = 1;
	public Color color;

	public SkinnedMeshRenderer meshRender;
	//X-ray
	public Shader ghostShader;

	private float _lastTime = 0;
	private Vector3 _lastPos = Vector3.zero;

	public EntityMainPlayer cha;

	void Update()
	{
		//人物有位移才创建残影
		if (/*!cha.isDashing ||*/ _lastPos == this.transform.position)
		{
			return;
		}
		_lastPos = this.transform.position;
		if (Time.time - _lastTime < interval)
		{//残影间隔时间
			return;
		}
		_lastTime = Time.time;

		if (meshRender == null)
			return;
		Mesh mesh = new Mesh();
		meshRender.BakeMesh(mesh);

		GameObject go = new GameObject();
		go.hideFlags = HideFlags.HideAndDontSave;

		GhostItem item = go.AddComponent<GhostItem>();//控制残影消失
		item.duration = duration;
		item.deleteTime = Time.time + duration;

		MeshFilter filter = go.AddComponent<MeshFilter>();
		filter.mesh = mesh;

		MeshRenderer meshRen = go.AddComponent<MeshRenderer>();

		meshRen.material = new Material(ghostShader);
		meshRen.material.SetFloat("_Intension", intension);//颜色强度传入shader中
		meshRen.material.SetColor("_RimColor", color);//颜色强度传入shader中

		go.transform.localScale = meshRender.transform.localScale;
		go.transform.position = meshRender.transform.position;
		go.transform.rotation = meshRender.transform.rotation;

		item.meshRenderer = meshRen;
	}
}