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Assets/Scripts/Fishing/New/View/FishingLine/FishingLineSolver.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using UnityEngine;
+
+namespace NBF
+{
+    public enum LineType
+    {
+        Hand,
+        HandDouble,
+        Spinning,
+        SpinningFloat,
+    }
+
+    public class FishingLineSolver : FGearBase
+    {
+        [SerializeField] public LineType LineType;
+
+
+        [Header("References")] [SerializeField]
+        private Transform anchorTransform;
+
+        [SerializeField] private FishingLineNode[] logicalNodes = Array.Empty<FishingLineNode>();
+
+        public JointPinchController PinchController;
+
+        protected override void OnInit()
+        {
+            // var tipRb = Rod.Asset.LineConnectorRigidbody;
+            // anchorTransform = tipRb.transform;
+            //
+            // GetComponentsInChildren<Transform>(includeInactive: true).ToList().ForEach(delegate(Transform i)
+            // {
+            //     i.gameObject.SetActive(true);
+            // });
+        }
+
+        private void Start()
+        {
+            GetComponentsInChildren<Transform>(includeInactive: true).ToList().ForEach(delegate(Transform i)
+            {
+                i.gameObject.SetActive(true);
+            });
+        }
+
+        private void FixedUpdate()
+        {
+            UpdateAnchorNode();
+        }
+
+        #region Start Node
+
+        private void ConfigureStartNode()
+        {
+            if (logicalNodes == null || logicalNodes.Length == 0 || logicalNodes[0] == null)
+            {
+                return;
+            }
+
+            var startNode = logicalNodes[0];
+            startNode.Type = FishingLineNode.NodeType.Start;
+
+            if (startNode.Body != null)
+            {
+                startNode.Body.isKinematic = true;
+                startNode.Body.interpolation = RigidbodyInterpolation.Interpolate;
+                startNode.Body.collisionDetectionMode = CollisionDetectionMode.ContinuousDynamic;
+            }
+
+            UpdateAnchorNode();
+        }
+
+        private void UpdateAnchorNode()
+        {
+            if (anchorTransform == null || logicalNodes == null || logicalNodes.Length == 0 || logicalNodes[0] == null)
+            {
+                return;
+            }
+
+            var startNode = logicalNodes[0];
+            startNode.transform.SetPositionAndRotation(anchorTransform.position, anchorTransform.rotation);
+
+            if (startNode.Body != null)
+            {
+                if (!startNode.Body.isKinematic)
+                {
+                    startNode.Body.linearVelocity = Vector3.zero;
+                    startNode.Body.angularVelocity = Vector3.zero;
+                }
+            }
+        }
+
+        #endregion
+
+        #region Line
+
+        /// <summary>
+        /// 当前逻辑链总长度超出配置总长度的部分，小于等于零时记为 0。
+        /// </summary>
+        public float CurrentStretchLength { get; private set; }
+
+        /// <summary>
+        /// 设置指定逻辑段的配置长度。
+        /// segmentIndex 为 0 时表示第一段；大于 0 时表示对应逻辑节点到下一个逻辑节点的线长。
+        /// </summary>
+        public void SetLenght(float length, int index = 0)
+        {
+            ConfigureStartNode();
+            var node = logicalNodes[index];
+            if (node != null)
+            {
+                node.SetLenght(length);
+            }
+        }
+
+        #endregion
+
+        #region LineNode
+
+        /// <summary>
+        /// 当前配置的逻辑节点只读列表。
+        /// 外部可读取节点顺序，但不应直接修改数组内容。
+        /// </summary>
+        public IReadOnlyList<FishingLineNode> LogicalNodes => logicalNodes;
+
+        /// <summary>
+        /// 根据类型获取逻辑节点类型
+        /// </summary>
+        /// <param name="nodeType"></param>
+        /// <returns></returns>
+        public FishingLineNode GetLogicalNode(FishingLineNode.NodeType nodeType)
+        {
+            foreach (var fishingLineNode in logicalNodes)
+            {
+                if (fishingLineNode.Type == nodeType)
+                {
+                    return fishingLineNode;
+                }
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// 获取指定顺序索引的逻辑节点。
+        /// 索引基于 logicalNodes 配置顺序；超出范围或节点为空时返回 null。
+        /// </summary>
+        public FishingLineNode GetLogicalNode(int logicalIndex)
+        {
+            if (logicalNodes == null || logicalIndex < 0 || logicalIndex >= logicalNodes.Length)
+            {
+                return null;
+            }
+
+            return logicalNodes[logicalIndex];
+        }
+
+        /// <summary>
+        /// 获取当前起点逻辑节点。
+        /// 会返回配置顺序中第一个非空节点。
+        /// </summary>
+        public FishingLineNode GetStartNode()
+        {
+            return FindFirstValidLogicalNode();
+        }
+
+        /// <summary>
+        /// 获取当前终点逻辑节点。
+        /// 会返回配置顺序中最后一个非空节点。
+        /// </summary>
+        public FishingLineNode GetEndNode()
+        {
+            return FindLastValidLogicalNode();
+        }
+
+        private FishingLineNode FindFirstValidLogicalNode()
+        {
+            if (logicalNodes == null)
+            {
+                return null;
+            }
+
+            for (var i = 0; i < logicalNodes.Length; i++)
+            {
+                if (logicalNodes[i] != null)
+                {
+                    return logicalNodes[i];
+                }
+            }
+
+            return null;
+        }
+
+        private FishingLineNode FindLastValidLogicalNode()
+        {
+            if (logicalNodes == null)
+            {
+                return null;
+            }
+
+            for (var i = logicalNodes.Length - 1; i >= 0; i--)
+            {
+                if (logicalNodes[i] != null)
+                {
+                    return logicalNodes[i];
+                }
+            }
+
+            return null;
+        }
+
+        #endregion
+
+        #region 极限判定
+
+        [Header("Limit Detection")]
+        [Min(0f)]
+        // 极限判定的长度容差，允许链路在总长或单段长度上存在少量误差。
+        [SerializeField]
+        private float lengthLimitTolerance = 0.01f;
+
+        [Min(0f)]
+        // 达到极限后，只有当前超长值大于该阈值时，才开始进入断线候选计时。
+        [SerializeField]
+        private float breakStretchThreshold = 0.05f;
+
+        /// <summary>
+        /// 当鱼线达到断线条件时发出的一次性消息。
+        /// 外部可订阅该事件，在回调中执行切线、播放表现或状态切换。
+        /// </summary>
+        public event Action<FishingLineSolver> OnLineBreakRequested;
+
+        /// <summary>
+        /// 当前断线候选状态的累计时间。
+        /// 只有在处于极限状态，且 CurrentStretchLength 大于断线阈值时才会累加；否则重置为 0。
+        /// </summary>
+        public float LimitStateTime { get; private set; }
+
+        /// <summary>
+        /// 当前拉力极限百分比。
+        /// 当超长值小于等于 lengthLimitTolerance 时为 0；
+        /// 当超长值大于等于 breakStretchThreshold 时为 100；
+        /// 中间区间按线性比例映射，供 UI 显示使用。
+        /// </summary>
+        public float CurrentBreakStretchPercent => EvaluateBreakStretchPercent(CurrentStretchLength);
+
+
+        private float EvaluateBreakStretchPercent(float stretchLength)
+        {
+            if (stretchLength <= lengthLimitTolerance)
+            {
+                return 0f;
+            }
+
+            if (stretchLength >= breakStretchThreshold)
+            {
+                return 100f;
+            }
+
+            if (breakStretchThreshold <= lengthLimitTolerance)
+            {
+                return 100f;
+            }
+
+            return Mathf.InverseLerp(lengthLimitTolerance, breakStretchThreshold, stretchLength) * 100f;
+        }
+
+        #endregion
+    }
+}