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{fileID: 1418847131} - {fileID: 272993070} - {fileID: 7476150} + - {fileID: 1670765576} + - {fileID: 1778778649} - {fileID: 1930140672} - {fileID: 601989252} - {fileID: 1790524742} diff --git a/Assets/Scripts/Rope.cs b/Assets/Scripts/Rope.cs index a48e749a1..0720324af 100644 --- a/Assets/Scripts/Rope.cs +++ b/Assets/Scripts/Rope.cs @@ -3,8 +3,10 @@ using UnityEngine; [RequireComponent(typeof(LineRenderer))] public class Rope : MonoBehaviour { - [Header("Demo Parameters")] [SerializeField, Min(0)] - float mouseOffset = 10f; + [Header("Attachment Points")] [SerializeField] + 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(); - cam = Camera.main; gravity = new Vector3(0, -gravityStrength, 0); // 初始化节点测试器 @@ -62,8 +58,7 @@ public class Rope : MonoBehaviour // 计算节点数量 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 - if (currentNodePositions[i] == null) - { - currentNodePositions[i] = startPos; - previousNodePositions[i] = startPos; - } + + currentNodePositions[i] = startPos; + previousNodePositions[i] = startPos; startPos.y -= distance; } @@ -105,55 +95,29 @@ 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) ? - (totalLength % nodeDistance) : nodeDistance; - + float distance = (i == currentNodePositions.Length - 1 && (totalLength % nodeDistance) > 0) + ? (totalLength % nodeDistance) + : nodeDistance; + lastPos.y -= distance; currentNodePositions[i] = lastPos; previousNodePositions[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 - currentNodePositions[0] = startLock; - if (isStartLocked && isEndLocked) + // 绑定到起点Transform + if (startAttachment != null) { - 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) ? - (totalLength % nodeDistance) : nodeDistance; - + float desiredDistance = (i == nodeCountMinusOne - 1 && (totalLength % nodeDistance) > 0) + ? (totalLength % 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; + } } \ No newline at end of file