去掉obi，使用自写绳索

Assets/Obi/Scripts/RopeAndRod/Utils/ObiRopeReel.cs

@@ -1,62 +0,0 @@
-using UnityEngine;
-
-namespace Obi
-{
-	[RequireComponent(typeof(ObiRopeCursor))]
-	public class ObiRopeReel : MonoBehaviour
-	{
-		private ObiRopeCursor cursor;
-		private ObiRope rope;
-
-		[Header("Roll out/in thresholds")]
-		public float outThreshold = 0.8f;
-		public float inThreshold = 0.4f;
-
-		[Header("Roll out/in speeds")]
-		public float outSpeed = 4;
-		public float inSpeed = 2;
-
-        public float maxLength = 10;
-
-        private float restLength;
-
-        public void Awake()
-		{
-			cursor = GetComponent<ObiRopeCursor>();
-			rope = GetComponent<ObiRope>();
-            restLength = rope.restLength;
-        }
-
-		public void OnValidate()
-		{
-			// Make sure the range thresholds don't cross:
-			outThreshold = Mathf.Max(inThreshold, outThreshold);
-		}
-
-		// Update is called once per frame
-		void Update()
-		{
-			// get current and rest lengths:
-			float length = rope.CalculateLength();
-
-			// calculate difference between current length and rest length:
-			float diff = Mathf.Max(0, length - restLength);
-
-            float lengthChange = 0;
-
-			// if the rope has been stretched beyond the reel out threshold, increase its rest length:
-			if (diff > outThreshold)
-                lengthChange = outSpeed * Time.deltaTime;
-
-			// if the rope is not stretched past the reel in threshold, decrease its rest length:
-			if (diff < inThreshold)
-                lengthChange = -inSpeed * Time.deltaTime;
-
-            // make sure not to exceed maxLength:
-            lengthChange -= Mathf.Max(0, restLength + lengthChange - maxLength);
-
-            // set the new rest length:
-            restLength = cursor.ChangeLength(lengthChange);
-		}
-	}
-}