修改绳的逻辑

Assets/Scenes/RopeTest.unity

@@ -488,10 +488,18 @@ PrefabInstance:
       propertyPath: startAnchor
       value: 
       objectReference: {fileID: 1005026351}
+    - target: {fileID: 114581403422500557, guid: ea6901d8aa7c41d41987d8ca92b02f6d, type: 3}
+      propertyPath: constrainToWaterSurface
+      value: 0
+      objectReference: {fileID: 0}
     - target: {fileID: 420085638995403055, guid: ea6901d8aa7c41d41987d8ca92b02f6d, type: 3}
       propertyPath: Rope
       value: 
       objectReference: {fileID: 410242110}
+    - target: {fileID: 420085638995403055, guid: ea6901d8aa7c41d41987d8ca92b02f6d, type: 3}
+      propertyPath: _rope
+      value: 
+      objectReference: {fileID: 410242110}
     - target: {fileID: 484878994603287356, guid: ea6901d8aa7c41d41987d8ca92b02f6d, type: 3}
       propertyPath: m_Parameters.widthCurve.m_Curve.Array.data[0].value
       value: 0.001
@@ -508,6 +516,10 @@ PrefabInstance:
       propertyPath: Rope
       value: 
       objectReference: {fileID: 1092033884}
+    - target: {fileID: 3199098293373602285, guid: ea6901d8aa7c41d41987d8ca92b02f6d, type: 3}
+      propertyPath: _rope
+      value: 
+      objectReference: {fileID: 1092033884}
     - target: {fileID: 7888891488031969805, guid: ea6901d8aa7c41d41987d8ca92b02f6d, type: 3}
       propertyPath: anchorTransform
       value: 
@@ -551,7 +563,7 @@ GameObject:
   - component: {fileID: 1181671548}
   - component: {fileID: 1181671547}
   - component: {fileID: 1181671546}
-  m_Layer: 0
+  m_Layer: 3
   m_Name: Terrain
   m_TagString: Untagged
   m_Icon: {fileID: 0}