绳子绑定

Assets/Scenes/SampleScene.unity

@@ -714,6 +714,7 @@ GameObject:
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@@ -795,6 +796,50 @@ Transform:
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@@ -932,11 +977,12 @@ MonoBehaviour:
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   m_Name: 
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-  mouseOffset: 10
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-  nodeDistance: 0.1
+  endAttachment: {fileID: 1778778649}
+  nodeDistance: 0.05
   nodeColliderRadius: 0.3
   gravityStrength: 1.962
-  totalLength: 6
+  totalLength: 30
   velocityDampen: 0.95
   stiffness: 0.99
   iterateCollisionsEvery: 1
@@ -1177,6 +1223,129 @@ Transform:
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+--- !u!4 &1670765576
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@@ -1287,6 +1456,129 @@ Transform:
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@@ -1700,6 +1992,8 @@ SceneRoots:
   - {fileID: 1418847131}
   - {fileID: 272993070}
   - {fileID: 7476150}
+  - {fileID: 1670765576}
+  - {fileID: 1778778649}
   - {fileID: 1930140672}
   - {fileID: 601989252}
   - {fileID: 1790524742}

Assets/Scripts/Rope.cs

@@ -3,8 +3,10 @@ using UnityEngine;
 [RequireComponent(typeof(LineRenderer))]
 public class Rope : MonoBehaviour
 {
-    [Header("Demo Parameters")] [SerializeField, Min(0)]
+    [Header("Attachment Points")] [SerializeField]
-    float mouseOffset = 10f;
+    public Transform startAttachment; // 绳子起点绑定的Transform
+
+    [SerializeField] public Transform endAttachment; // 绳子终点绑定的Transform
 
     [Header("Verlet Parameters")] [SerializeField]
     float nodeDistance = 0.35f;
@@ -22,12 +24,7 @@ public class Rope : MonoBehaviour
     float ropeWidth = 0.1f;
 
     // 私有变量
-    Camera cam;
     Vector3 gravity;
-    Vector3 startLock;
-    Vector3 endLock;
-    bool isStartLocked = false;
-    bool isEndLocked = false;
 
     // 数组和缓存
     Vector3[] currentNodePositions;
@@ -37,13 +34,12 @@ public class Rope : MonoBehaviour
     GameObject nodeTester;
     SphereCollider nodeCollider;
     int totalNodes;
-    float lastTotalLength; // 用于检测长度变化
+    float lastTotalLength;
 
     void Awake()
     {
         // 获取组件引用
         lineRenderer = GetComponent<LineRenderer>();
-        cam = Camera.main;
         gravity = new Vector3(0, -gravityStrength, 0);
 
         // 初始化节点测试器
@@ -63,7 +59,6 @@ public class Rope : MonoBehaviour
         totalNodes = Mathf.FloorToInt(totalLength / nodeDistance) + 1;
         float remainingLength = totalLength % nodeDistance;
 
-        // 如果剩余长度大于0，增加一个节点
         if (remainingLength > 0 && totalLength > nodeDistance)
         {
             totalNodes++;
@@ -75,18 +70,13 @@ public class Rope : MonoBehaviour
         colliderHitBuffer = new Collider[colliderBufferSize];
 
         // 初始化节点位置
-        Vector3 startPos = transform.position;
+        Vector3 startPos = startAttachment != null ? startAttachment.position : transform.position;
         for (int i = 0; i < totalNodes; i++)
         {
-            // 如果是最后一个节点且有剩余长度，使用剩余长度
             float distance = (i == totalNodes - 1 && remainingLength > 0) ? remainingLength : nodeDistance;
 
-            // 如果数组已有数据，保持现有位置，否则初始化新位置
+            currentNodePositions[i] = startPos;
-            if (currentNodePositions[i] == null)
+            previousNodePositions[i] = startPos;
-            {
-                currentNodePositions[i] = startPos;
-                previousNodePositions[i] = startPos;
-            }
             startPos.y -= distance;
         }
 
@@ -105,54 +95,28 @@ public class Rope : MonoBehaviour
             lastTotalLength = totalLength;
         }
 
-        // 处理鼠标输入
-        if (Input.GetMouseButtonDown(0))
-        {
-            if (!isStartLocked)
-            {
-                isStartLocked = true;
-                startLock = GetMouseWorldPosition();
-            }
-            else if (!isEndLocked)
-            {
-                isEndLocked = true;
-                endLock = GetMouseWorldPosition();
-            }
-        }
-        else if (!isStartLocked)
-        {
-            startLock = GetMouseWorldPosition();
-        }
-        else if (isStartLocked && !isEndLocked)
-        {
-            endLock = GetMouseWorldPosition();
-        }
-
         DrawRope();
     }
 
     void AdjustRopeLength()
     {
-        // 保存旧位置
         Vector3[] oldPositions = (Vector3[])currentNodePositions.Clone();
         Vector3[] oldPrevPositions = (Vector3[])previousNodePositions.Clone();
 
-        // 重新初始化绳索
         InitializeRope();
 
-        // 尽可能保留旧位置数据
         int copyLength = Mathf.Min(oldPositions.Length, currentNodePositions.Length);
         System.Array.Copy(oldPositions, currentNodePositions, copyLength);
         System.Array.Copy(oldPrevPositions, previousNodePositions, copyLength);
 
-        // 如果长度增加，初始化新增节点的位置
         if (currentNodePositions.Length > oldPositions.Length)
         {
             Vector3 lastPos = oldPositions[oldPositions.Length - 1];
             for (int i = oldPositions.Length; i < currentNodePositions.Length; i++)
             {
-                float distance = (i == currentNodePositions.Length - 1 && (totalLength % nodeDistance) > 0) ? 
+                float distance = (i == currentNodePositions.Length - 1 && (totalLength % nodeDistance) > 0)
-                                (totalLength % nodeDistance) : nodeDistance;
+                    ? (totalLength % nodeDistance)
+                    : nodeDistance;
 
                 lastPos.y -= distance;
                 currentNodePositions[i] = lastPos;
@@ -169,7 +133,6 @@ public class Rope : MonoBehaviour
         {
             ApplyConstraint();
 
-            // 减少碰撞检测频率
             if (i % (iterateCollisionsEvery + 1) == 0)
             {
                 AdjustCollisions();
@@ -177,17 +140,11 @@ public class Rope : MonoBehaviour
         }
     }
 
-    Vector3 GetMouseWorldPosition()
-    {
-        return cam.ScreenToWorldPoint(Input.mousePosition + new Vector3(0, 0, mouseOffset));
-    }
-
     void Simulate()
     {
         float fixedDt = Time.fixedDeltaTime;
         for (int i = 0; i < totalNodes; i++)
         {
-            // 计算并应用速度
             Vector3 velocity = (currentNodePositions[i] - previousNodePositions[i]) * velocityDampen;
             previousNodePositions[i] = currentNodePositions[i];
             currentNodePositions[i] += velocity + gravity * fixedDt;
@@ -196,14 +153,18 @@ public class Rope : MonoBehaviour
 
     void ApplyConstraint()
     {
-        // 锁定端点
+        // 绑定到起点Transform
-        currentNodePositions[0] = startLock;
+        if (startAttachment != null)
-        if (isStartLocked && isEndLocked)
         {
-            currentNodePositions[totalNodes - 1] = endLock;
+            currentNodePositions[0] = startAttachment.position;
+        }
+
+        // 绑定到终点Transform
+        if (endAttachment != null)
+        {
+            currentNodePositions[totalNodes - 1] = endAttachment.position;
         }
 
-        // 预计算所有常用值
         float halfStiffness = 0.5f * stiffness;
         int nodeCountMinusOne = totalNodes - 1;
 
@@ -213,14 +174,13 @@ public class Rope : MonoBehaviour
             Vector3 node2 = currentNodePositions[i + 1];
             Vector3 diff = node1 - node2;
 
-            // 计算期望的距离 - 如果是最后一个段且有剩余长度，使用剩余长度
+            float desiredDistance = (i == nodeCountMinusOne - 1 && (totalLength % nodeDistance) > 0)
-            float desiredDistance = (i == nodeCountMinusOne - 1 && (totalLength % nodeDistance) > 0) ? 
+                ? (totalLength % nodeDistance)
-                                   (totalLength % nodeDistance) : nodeDistance;
+                : nodeDistance;
 
             float sqrDesiredDistance = desiredDistance * desiredDistance;
             float sqrDistance = diff.x * diff.x + diff.y * diff.y + diff.z * diff.z;
 
-            // 只有当距离差异超过一定阈值时才调整
             if (Mathf.Abs(sqrDistance - sqrDesiredDistance) > 0.001f)
             {
                 float distance = Mathf.Sqrt(sqrDistance);
@@ -276,4 +236,11 @@ public class Rope : MonoBehaviour
             Destroy(nodeTester);
         }
     }
+
+    // 公开方法用于动态设置绑定点
+    public void SetAttachments(Transform start, Transform end)
+    {
+        startAttachment = start;
+        endAttachment = end;
+    }
 }