unity dotween拓展DOBezier 直接传递数组进来 按照贝塞尔曲线移动————小果冻

使用方法：把下边的ex脚本丢到unity里边 `

//调用方法如下 ： 把想要传递的路径数组和时间当参数传递进去 如果传递其他参数的话自行拓展
Vector3[]ve3=new vector3[]{};
transform.DOBezier(ve3,0.2f);

`

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using DG.Tweening;

namespace DG.Tweening 
{
    public static class EXDOBezier
    { 
       //--由小果冻拓展
        public static Tweener DOBezier(this Transform transform, Vector3[] path, float timer)
        {
			BezierPath bezierPath = new BezierPath(); 
			List<Vector3> c = new List<Vector3>();
			for (int o = 0; o < path.Length; o++)
			{
				if (path[o] != null)
				{
					Vector3 p = path[o];
					c.Add(p);
				}
			}
			bezierPath.DeletePath();
			bezierPath.CreateCurve(c); 
			return transform.DOPath(bezierPath.pathPoints.ToArray(),timer); 
		} 
		private  class BezierPath
		{
			public List<Vector3> pathPoints;
			private int segments;
			public int pointCount;

			public BezierPath()
			{
				pathPoints = new List<Vector3>();
				pointCount = 50;
			}

			public void DeletePath()
			{
				pathPoints.Clear();
			}

			Vector3 BezierPathCalculation(Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3, float t)
			{
				float tt = t * t;
				float ttt = t * tt;
				float u = 1.0f - t;
				float uu = u * u;
				float uuu = u * uu;

				Vector3 B = new Vector3();
				B = uuu * p0;
				B += 3.0f * uu * t * p1;
				B += 3.0f * u * tt * p2;
				B += ttt * p3;

				return B;
			}

			public void CreateCurve(List<Vector3> controlPoints)
			{
				segments = controlPoints.Count / 3;

				for (int s = 0; s < controlPoints.Count - 3; s += 3)
				{
					Vector3 p0 = controlPoints[s];
					Vector3 p1 = controlPoints[s + 1];
					Vector3 p2 = controlPoints[s + 2];
					Vector3 p3 = controlPoints[s + 3];

					if (s == 0)
					{
						pathPoints.Add(BezierPathCalculation(p0, p1, p2, p3, 0.0f));
					}

					for (int p = 0; p < (pointCount / segments); p++)
					{
						float t = (1.0f / (pointCount / segments)) * p;
						Vector3 point = new Vector3();
						point = BezierPathCalculation(p0, p1, p2, p3, t);
						pathPoints.Add(point);
					}
				}
			}
		} 
	}
}