去掉obi，使用自写绳索

Assets/Obi/Scripts/Common/DataStructures/ColliderShape.cs

@@ -1,55 +0,0 @@
-using UnityEngine;
-
-namespace Obi
-{
-    public struct ColliderShape
-    {
-        public enum ShapeType
-        {
-            Sphere = 0,
-            Box = 1,
-            Capsule = 2,
-            Heightmap = 3,
-            TriangleMesh = 4,
-            EdgeMesh = 5,
-            SignedDistanceField = 6
-        }
-
-        public Vector4 center;   
-        public Vector4 size;     /**<     box: size of the box in each axis.
-                                          sphere: radius of sphere (x,y,z),
-                                          capsule: radius (x), height(y), direction (z, can be 0, 1 or 2).
-                                          heightmap: width (x axis), height (y axis) and depth (z axis) in world units.*/
-        public ShapeType type;
-        public float contactOffset;
-        public int dataIndex;
-        public int rigidbodyIndex;  // index of the associated rigidbody in the collision world.
-        public int materialIndex;   // index of the associated material in the collision world.
-        public int forceZoneIndex;  // index of the associated force zone in the collision world.
-        public int filter;          // bitwise category/mask.
-        public int flags;           // first bit whether the collider is 2D (1) or 3D (0), second bit whether it's a trigger (1) or regular collider (0),
-                                    // third bit (sign) determines whether shape is inverted or not.
-
-        public bool is2D
-        {
-            get => (flags & 1) != 0;
-            set => flags |= value ? 1 : 0;
-        }
-        public bool isTrigger
-        {
-            get => ((flags & 1 << 1) != 0) || forceZoneIndex >= 0;
-            set => flags |= value ? 1 << 1 : 0;
-        }
-        public float sign
-        {
-            get => (flags & 1 << 2) != 0 ? -1 : 1;
-        }
-
-        public void SetSign(bool inverted)
-        {
-            if (inverted) flags |= 1 << 2;
-            else flags &= ~(1 << 2);
-        }
-
-    }
-}