去掉obi，使用自写绳索

Assets/Obi/Samples/Common/SampleResources/Scripts/ObiParticleCounter.cs

@@ -1,58 +0,0 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-
-namespace Obi.Samples
-{
-    [RequireComponent(typeof(ObiSolver))]
-    public class ObiParticleCounter : MonoBehaviour
-    {
-
-        ObiSolver solver;
-        public int counter = 0;
-        public Collider2D targetCollider = null;
-
-        ObiNativeContactList frame;
-        HashSet<int> particles = new HashSet<int>();
-
-        void Awake()
-        {
-            solver = GetComponent<Obi.ObiSolver>();
-        }
-
-        void OnEnable()
-        {
-            solver.OnCollision += Solver_OnCollision;
-        }
-
-        void OnDisable()
-        {
-            solver.OnCollision -= Solver_OnCollision;
-        }
-
-        void Solver_OnCollision(object sender, ObiNativeContactList e)
-        {
-            HashSet<int> currentParticles = new HashSet<int>();
-
-            for (int i = 0; i < e.count; ++i)
-            {
-                if (e[i].distance < 0.001f)
-                {
-
-                    /*Component collider;
-                    if (ObiCollider2D.idToCollider.TryGetValue(e.contacts.Data[i].other,out collider)){
-
-                        if (collider == targetCollider)
-                            currentParticles.Add(e.contacts.Data[i].particle);
-
-                    }*/
-                }
-            }
-
-            particles.ExceptWith(currentParticles);
-            counter += particles.Count;
-            particles = currentParticles; Debug.Log(counter);
-        }
-
-    }
-}