1070 lines
37 KiB
C#
1070 lines
37 KiB
C#
// using System;
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// using NBF;
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// using UnityEngine;
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//
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// [RequireComponent(typeof(LineRenderer))]
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// public class Rope : MonoBehaviour
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// {
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// [Header("Anchors")] [SerializeField] public Rigidbody startAnchor;
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// [SerializeField] public Rigidbody endAnchor;
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//
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// /// <summary>鱼线宽度倍数</summary>
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// public int LineMultiple = 1;
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//
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// [Header("Physics (Dynamic Nodes, Fixed Segment Len)")] [SerializeField, Min(0.01f), Tooltip("物理每段固定长度（越小越细致越耗）")]
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// private float physicsSegmentLen = 0.15f;
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//
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// [SerializeField, Range(2, 200)] private int minPhysicsNodes = 12;
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//
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// [SerializeField, Range(2, 400), Tooltip("物理节点上限（仅用于性能保护；与“最大长度不限制”不是一回事）")]
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// private int maxPhysicsNodes = 120;
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//
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// [SerializeField] private float gravityStrength = 2.0f;
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// [SerializeField, Range(0f, 1f)] private float velocityDampen = 0.95f;
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//
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// [SerializeField, Range(0.0f, 1.0f), Tooltip("约束修正强度，越大越硬。0.6~0.9 常用")]
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// private float stiffness = 0.8f;
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//
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// [SerializeField, Range(1, 80), Tooltip("迭代次数。鱼线 10~30 通常够用")]
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// private int iterations = 20;
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//
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// [SerializeField, Range(0, 16), Tooltip("主求解后追加的硬长度约束次数。只负责把 poly 拉回到 rest total，不改变可变长度逻辑")]
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// private int hardTightenIterations = 2;
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//
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// [Header("Length Control (No Min/Max Clamp)")]
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// [Tooltip("初始总长度（米）。如果为 0，则用 physicsSegmentLen*(minPhysicsNodes-1) 作为初始长度")]
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// [SerializeField, Min(0f)]
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// private float initialLength = 0f;
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//
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// [Tooltip("长度变化平滑时间（越小越跟手，越大越稳）")] [SerializeField, Min(0.0001f)]
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// private float lengthSmoothTime = 0.15f;
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//
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// [Tooltip("当长度在变化时，额外把速度压掉一些（防抖）。0=不额外处理，1=变化时几乎清速度（建议只在收线生效）")] [SerializeField, Range(0f, 1f)]
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// private float lengthChangeVelocityKill = 0.6f;
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//
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// [Tooltip("允许的最小松弛余量（避免目标长度刚好等于锚点距离时抖动）")] [SerializeField, Min(0f)]
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// private float minSlack = 0.002f;
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//
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// [Header("Head Segment Clamp")] [Tooltip("第一段（起点->第1节点）允许的最小长度，避免收线时第一段被压到0导致数值炸")] [SerializeField, Min(0.0001f)]
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// private float headMinLen = 0.01f;
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//
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// [Header("Node Count Stability")] [SerializeField, Tooltip("节点数切换迟滞（米）。避免长度在临界点抖动导致节点数来回跳 -> 卡顿")]
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// private float nodeHysteresis = 0.05f;
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//
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// [Header("Simple Ground/Water Constraint (Cheap)")] [SerializeField]
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// private bool constrainToGround = true;
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//
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// [SerializeField] private LayerMask groundMask = ~0;
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// [SerializeField, Min(0f)] private float groundRadius = 0.01f;
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// [SerializeField, Min(0f)] private float groundCastHeight = 1.0f;
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// [SerializeField, Min(0.01f)] private float groundCastDistance = 2.5f;
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//
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// [SerializeField, Range(1, 8), Tooltip("每隔多少个节点做一次地面检测；越大越省")]
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// private int groundSampleStep = 3;
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//
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// [SerializeField, Tooltip("未采样的点用插值还是直接拷贝邻近采样值")]
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// private bool groundInterpolate = true;
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//
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// [SerializeField, Range(1, 8), Tooltip("每隔多少次FixedUpdate更新一次地面约束")]
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// private int groundUpdateEvery = 2;
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//
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// [SerializeField, Range(0, 8), Tooltip("地面约束后，再做几次长度约束，减少 poly 被地面抬长")]
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// private int groundPostConstraintIterations = 2;
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//
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// private int _groundFrameCounter;
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//
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// [Header("Simple Water Float (Cheap)")] [SerializeField, Tooltip("绳子落到水面以下时，是否把节点约束回水面")]
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// private bool constrainToWaterSurface = true;
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//
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// [SerializeField, Tooltip("静态水面高度；如果你后面接波浪水面，可改成采样函数")]
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// private float waterLevelY = 0f;
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//
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// [SerializeField, Min(0f), Tooltip("把线抬到水面上方一点，避免视觉穿插")]
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// private float waterSurfaceOffset = 0.002f;
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//
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// [SerializeField, Range(1, 8), Tooltip("每隔多少个节点做一次水面约束采样；越大越省")]
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// private int waterSampleStep = 2;
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//
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// [SerializeField, Tooltip("未采样节点是否插值水面高度")]
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// private bool waterInterpolate = true;
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//
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// [SerializeField, Range(1, 8), Tooltip("每隔多少次FixedUpdate更新一次水面约束")]
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// private int waterUpdateEvery = 1;
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//
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// [SerializeField, Range(0f, 1f), Tooltip("水面约束抬升强度（每次更新的插值强度），越小越渐进")]
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// private float waterLiftStrength = 0.25f;
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//
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// [SerializeField, Tooltip("startAnchor 在水下时，让其相邻端节点强制跟随 startAnchor，避免被抬到水面导致脱离")]
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// private bool keepStartAdjacentNodeFollow = true;
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//
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// [SerializeField, Range(0, 8), Tooltip("水面约束后，再做几次长度约束，减少局部折角")]
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// private int waterPostConstraintIterations = 2;
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//
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// private int _waterFrameCounter;
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//
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// [Header("Render (High Resolution)")] [SerializeField, Min(1), Tooltip("静止时每段物理线段插值加密数量（越大越顺，越耗）")]
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// private int renderSubdivisionsIdle = 6;
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//
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// [SerializeField, Min(1), Tooltip("甩动时每段物理线段插值加密数量（动态降LOD以防卡顿）")]
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// private int renderSubdivisionsMoving = 2;
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//
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// [SerializeField, Min(0f), Tooltip("平均速度超过该阈值认为在甩动（用于动态降 subdiv）")]
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// private float movingSpeedThreshold = 2.0f;
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//
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// [SerializeField, Tooltip("是否使用 Catmull-Rom 平滑（开启更顺，但更耗）")]
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// private bool smooth = true;
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//
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// [SerializeField, Min(0.0001f)] private float lineWidth = 0.001f;
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//
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// [Header("Performance")] [SerializeField, Tooltip("远端玩家鱼线不可见时，直接停止整条渲染线的模拟与绘制")]
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// private bool cullRemoteRopeWhenInvisible = true;
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//
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// [SerializeField, Tooltip("本地玩家自己的鱼线始终保持完整计算")]
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// private bool localOwnerAlwaysSimulate = true;
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//
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// [SerializeField, Range(1, 60), Tooltip("每隔多少个 FixedUpdate 重新判断一次可见性")]
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// private int visibilityCheckEvery = 10;
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//
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// [SerializeField, Range(0f, 0.5f), Tooltip("屏幕边缘额外留白，避免刚进视野就闪现")]
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// private float visibilityViewportPadding = 0.08f;
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//
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// [Header("Air Drag (Stable)")] [SerializeField, Range(0f, 5f), Tooltip("空气阻力（Y向），指数衰减，越大越不飘")]
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// private float airDrag = 0.9f;
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//
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// [SerializeField, Range(0f, 2f), Tooltip("横向额外阻力（XZ），指数衰减，越大越不左右飘")]
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// private float airDragXZ = 0.6f;
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//
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// private LineRenderer _lineRenderer;
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//
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// // physics
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// private int _physicsNodes;
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// private Vector3[] _pCurr;
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// private Vector3[] _pPrev;
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//
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// // render (一次性分配到最大，后续不再 new)
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// private Vector3[] _rPoints;
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// private int _rCapacity;
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//
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// private Vector3 _gravity;
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//
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// // length control runtime
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// private float _targetLength;
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// private float _currentLength;
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// private float _lengthSmoothVel;
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//
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// // rest length head
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// private float _headRestLen;
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//
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// // node stability
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// private int _lastDesiredNodes = 0;
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//
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// // caches
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// private Transform _startTr;
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// private Transform _endTr;
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//
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// // precomputed
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// private float _dt;
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// private float _dt2;
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// private float _kY;
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// private float _kXZ;
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// private Transform _cameraTr;
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// private int _visibilityCheckCounter;
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// private bool _isCulledByVisibility;
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// private int _tIdleSubdiv = -1;
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// private int _tMovingSubdiv = -1;
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//
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// private FRod _rod;
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// public void Init(FRod rod)
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// {
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// _rod = rod;
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// if (Application.isPlaying)
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// RefreshVisibilityState(true);
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// }
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//
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// // Catmull t caches（只缓存 idle/moving 两档，减少每帧重复乘法）
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// private struct TCaches
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// {
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// public float[] t;
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// public float[] t2;
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// public float[] t3;
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// }
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//
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// private TCaches _tIdle;
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// private TCaches _tMoving;
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//
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// private void Awake()
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// {
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// _lineRenderer = GetComponent<LineRenderer>();
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// _gravity = new Vector3(0f, -gravityStrength, 0f);
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//
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// RefreshAnchorTransforms();
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//
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// InitLengthSystem();
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// AllocateAndInitNodes();
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// EnsureRenderCaches();
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// RefreshVisibilityState(true);
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// }
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//
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// private void OnValidate()
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// {
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// renderSubdivisionsIdle = Mathf.Max(renderSubdivisionsIdle, 1);
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// renderSubdivisionsMoving = Mathf.Max(renderSubdivisionsMoving, 1);
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// iterations = Mathf.Clamp(iterations, 1, 80);
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// hardTightenIterations = Mathf.Clamp(hardTightenIterations, 0, 16);
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// groundCastDistance = Mathf.Max(groundCastDistance, 0.01f);
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// groundCastHeight = Mathf.Max(groundCastHeight, 0f);
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// lineWidth = Mathf.Max(lineWidth, 0.0001f);
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//
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// lengthSmoothTime = Mathf.Max(lengthSmoothTime, 0.0001f);
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//
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// physicsSegmentLen = Mathf.Max(physicsSegmentLen, 0.01f);
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// minPhysicsNodes = Mathf.Max(minPhysicsNodes, 2);
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// maxPhysicsNodes = Mathf.Max(maxPhysicsNodes, minPhysicsNodes);
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//
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// headMinLen = Mathf.Max(headMinLen, 0.0001f);
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// nodeHysteresis = Mathf.Max(0f, nodeHysteresis);
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//
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// groundSampleStep = Mathf.Max(1, groundSampleStep);
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// groundUpdateEvery = Mathf.Max(1, groundUpdateEvery);
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// groundPostConstraintIterations = Mathf.Clamp(groundPostConstraintIterations, 0, 8);
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//
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// waterSampleStep = Mathf.Max(1, waterSampleStep);
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// waterUpdateEvery = Mathf.Max(1, waterUpdateEvery);
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// waterSurfaceOffset = Mathf.Max(0f, waterSurfaceOffset);
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// waterLiftStrength = Mathf.Clamp01(waterLiftStrength);
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// waterPostConstraintIterations = Mathf.Clamp(waterPostConstraintIterations, 0, 8);
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// visibilityCheckEvery = Mathf.Clamp(visibilityCheckEvery, 1, 60);
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// visibilityViewportPadding = Mathf.Clamp(visibilityViewportPadding, 0f, 0.5f);
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// }
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//
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// private void RefreshAnchorTransforms()
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// {
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// _startTr = startAnchor ? startAnchor.transform : null;
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// _endTr = endAnchor ? endAnchor.transform : null;
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// }
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//
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// private bool ShouldAlwaysSimulate()
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// {
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// if (!localOwnerAlwaysSimulate)
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// return false;
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//
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// var owner = _rod?.PlayerItem?.Owner;
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// return owner == null || owner.IsSelf;
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// }
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//
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// private Transform GetActiveCameraTransform()
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// {
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// Camera main = BaseCamera.Main;
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// if (main)
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// {
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// _cameraTr = main.transform;
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// return _cameraTr;
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// }
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//
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// if (!_cameraTr)
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// {
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// Camera fallback = Camera.main;
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// if (fallback)
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// _cameraTr = fallback.transform;
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// }
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//
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// return _cameraTr;
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// }
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//
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// private static bool IsViewportPointVisible(Vector3 viewportPoint, float padding)
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// {
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// if (viewportPoint.z <= 0f)
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// return false;
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//
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// return viewportPoint.x >= -padding && viewportPoint.x <= 1f + padding &&
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// viewportPoint.y >= -padding && viewportPoint.y <= 1f + padding;
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// }
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//
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// private bool IsVisibleToMainCamera()
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// {
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// Transform camTr = GetActiveCameraTransform();
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// if (!camTr)
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// return true;
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//
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// Camera cam = camTr.GetComponent<Camera>();
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// if (!cam)
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// cam = BaseCamera.Main ? BaseCamera.Main : Camera.main;
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// if (!cam)
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// return true;
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//
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// Vector3 start = _startTr ? _startTr.position : (startAnchor ? startAnchor.position : transform.position);
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// Vector3 end = _endTr ? _endTr.position : (endAnchor ? endAnchor.position : transform.position);
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// Vector3 middle = (start + end) * 0.5f;
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// float padding = visibilityViewportPadding;
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//
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// return IsViewportPointVisible(cam.WorldToViewportPoint(start), padding) ||
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// IsViewportPointVisible(cam.WorldToViewportPoint(end), padding) ||
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// IsViewportPointVisible(cam.WorldToViewportPoint(middle), padding);
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// }
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//
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// private void RefreshVisibilityState(bool force = false)
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// {
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// if (!cullRemoteRopeWhenInvisible || ShouldAlwaysSimulate())
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// {
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// _isCulledByVisibility = false;
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// if (_lineRenderer)
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// _lineRenderer.enabled = true;
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// return;
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// }
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//
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// if (!force)
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// {
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// _visibilityCheckCounter++;
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// if (_visibilityCheckCounter < visibilityCheckEvery)
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// return;
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// }
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//
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// _visibilityCheckCounter = 0;
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// bool wasCulled = _isCulledByVisibility;
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// _isCulledByVisibility = !IsVisibleToMainCamera();
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//
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// if (_lineRenderer)
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// _lineRenderer.enabled = !_isCulledByVisibility;
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//
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// if (wasCulled && !_isCulledByVisibility)
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// SyncVisibleStateAfterCulling();
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// }
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//
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// private void SyncVisibleStateAfterCulling()
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// {
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// _currentLength = Mathf.Max(_targetLength, 0.01f);
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// UpdateNodesFromLength();
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// UpdateHeadRestLenFromCurrentLength();
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// ResetNodesBetweenAnchors();
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// LockAnchorsHard();
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// }
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//
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// private void ResetNodesBetweenAnchors()
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// {
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// if (_physicsNodes < 2)
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// return;
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//
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// Vector3 start = _startTr ? _startTr.position : (startAnchor ? startAnchor.position : transform.position);
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// Vector3 end = _endTr ? _endTr.position : (endAnchor ? endAnchor.position : transform.position);
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// int last = _physicsNodes - 1;
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//
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// for (int i = 0; i <= last; i++)
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// {
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// float t = (last > 0) ? i / (float)last : 0f;
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// Vector3 pos = Vector3.Lerp(start, end, t);
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// _pCurr[i] = pos;
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// _pPrev[i] = pos;
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// }
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// }
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//
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// private void EnsureRenderCaches()
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// {
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// int idle = Mathf.Max(1, renderSubdivisionsIdle);
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// if (_tIdleSubdiv != idle)
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// {
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// BuildTCaches(idle, ref _tIdle);
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// _tIdleSubdiv = idle;
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// }
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//
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// int moving = Mathf.Max(1, renderSubdivisionsMoving);
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// if (_tMovingSubdiv != moving)
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// {
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// BuildTCaches(moving, ref _tMoving);
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// _tMovingSubdiv = moving;
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// }
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//
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// int maxSubdiv = Mathf.Max(idle, moving);
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// int neededCapacity = (maxPhysicsNodes - 1) * maxSubdiv + 1;
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// if (_rPoints == null || neededCapacity > _rCapacity)
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// {
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// _rCapacity = neededCapacity;
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// _rPoints = new Vector3[_rCapacity];
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// }
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// }
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//
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// private void InitLengthSystem()
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// {
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// float defaultLen = physicsSegmentLen * (Mathf.Max(minPhysicsNodes, 2) - 1);
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// _currentLength = (initialLength > 0f) ? initialLength : defaultLen;
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// _targetLength = _currentLength;
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// }
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//
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// private void AllocateAndInitNodes()
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// {
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// _physicsNodes = Mathf.Clamp(ComputeDesiredNodesStable(_currentLength), 2, maxPhysicsNodes);
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//
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// _pCurr = new Vector3[maxPhysicsNodes];
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// _pPrev = new Vector3[maxPhysicsNodes];
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||
//
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||
// Vector3 start = startAnchor ? startAnchor.position : transform.position;
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// Vector3 dir = Vector3.down;
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//
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// for (int i = 0; i < _physicsNodes; i++)
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// {
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// Vector3 pos = start + dir * (physicsSegmentLen * i);
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// _pCurr[i] = pos;
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// _pPrev[i] = pos;
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// }
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//
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// UpdateHeadRestLenFromCurrentLength();
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//
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// if (startAnchor && endAnchor)
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// LockAnchorsHard();
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// }
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//
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// private int ComputeDesiredNodes(float lengthMeters)
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// {
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// int desired = Mathf.RoundToInt(Mathf.Max(0f, lengthMeters) / physicsSegmentLen) + 1;
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// desired = Mathf.Clamp(desired, minPhysicsNodes, maxPhysicsNodes);
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// return desired;
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// }
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||
//
|
||
// private int ComputeDesiredNodesStable(float lengthMeters)
|
||
// {
|
||
// int desired = ComputeDesiredNodes(lengthMeters);
|
||
//
|
||
// if (_lastDesiredNodes == 0)
|
||
// {
|
||
// _lastDesiredNodes = desired;
|
||
// return desired;
|
||
// }
|
||
//
|
||
// if (desired == _lastDesiredNodes)
|
||
// return desired;
|
||
//
|
||
// float boundary = (_lastDesiredNodes - 1) * physicsSegmentLen;
|
||
// if (Mathf.Abs(lengthMeters - boundary) < nodeHysteresis)
|
||
// return _lastDesiredNodes;
|
||
//
|
||
// _lastDesiredNodes = desired;
|
||
// return desired;
|
||
// }
|
||
//
|
||
// public void SetTargetLength(float lengthMeters) => _targetLength = Mathf.Max(0f, lengthMeters);
|
||
// public float GetCurrentLength() => _currentLength;
|
||
// public float GetTargetLength() => _targetLength;
|
||
// public float GetLengthSmoothVel() => _lengthSmoothVel;
|
||
//
|
||
// public float GetLengthByPoints()
|
||
// {
|
||
// if (!smooth)
|
||
// return GetPhysicsPolylineLength();
|
||
//
|
||
// if (_rPoints == null || _lineRenderer == null) return 0f;
|
||
//
|
||
// int count = _lineRenderer.positionCount;
|
||
// if (count < 2) return 0f;
|
||
//
|
||
// float totalLength = 0f;
|
||
// for (int i = 1; i < count; i++)
|
||
// {
|
||
// Vector3 a = _rPoints[i - 1];
|
||
// Vector3 b = _rPoints[i];
|
||
// totalLength += Vector3.Distance(a, b);
|
||
// }
|
||
//
|
||
// return totalLength;
|
||
// }
|
||
//
|
||
// public float GetPhysicsPolylineLength()
|
||
// {
|
||
// float total = 0f;
|
||
// for (int i = 1; i < _physicsNodes; i++)
|
||
// total += Vector3.Distance(_pCurr[i - 1], _pCurr[i]);
|
||
// return total;
|
||
// }
|
||
//
|
||
// public void DebugLength()
|
||
// {
|
||
// float solverRestTotal = (_physicsNodes - 2) * physicsSegmentLen + _headRestLen;
|
||
// float poly = GetPhysicsPolylineLength();
|
||
// float maxSegDelta = 0f;
|
||
// float avgSegDelta = 0f;
|
||
// for (int i = 1; i < _physicsNodes; i++)
|
||
// {
|
||
// float rest = (i == 1) ? _headRestLen : physicsSegmentLen;
|
||
// float segLen = Vector3.Distance(_pCurr[i - 1], _pCurr[i]);
|
||
// float delta = segLen - rest;
|
||
// if (delta > maxSegDelta) maxSegDelta = delta;
|
||
// avgSegDelta += delta;
|
||
// }
|
||
//
|
||
// if (_physicsNodes > 1)
|
||
// avgSegDelta /= (_physicsNodes - 1);
|
||
//
|
||
// Debug.Log(
|
||
// $"current={_currentLength}, target={_targetLength}, nodes={_physicsNodes}, " +
|
||
// $"seg={physicsSegmentLen}, head={_headRestLen}, headMin={headMinLen}, " +
|
||
// $"solverRestTotal={solverRestTotal}, poly={poly}, delta={poly - solverRestTotal}, " +
|
||
// $"maxSegDelta={maxSegDelta}, avgSegDelta={avgSegDelta}"
|
||
// );
|
||
// }
|
||
//
|
||
// private void FixedUpdate()
|
||
// {
|
||
// if (!startAnchor || !endAnchor) return;
|
||
//
|
||
// RefreshAnchorTransforms();
|
||
// RefreshVisibilityState();
|
||
// if (_isCulledByVisibility)
|
||
// return;
|
||
//
|
||
// _dt = Time.fixedDeltaTime;
|
||
// if (_dt < 1e-6f) _dt = 1e-6f;
|
||
// _dt2 = _dt * _dt;
|
||
//
|
||
// _gravity.y = -gravityStrength;
|
||
//
|
||
// _kY = Mathf.Exp(-airDrag * _dt);
|
||
// _kXZ = Mathf.Exp(-airDragXZ * _dt);
|
||
//
|
||
// UpdateLengthSmooth();
|
||
// UpdateNodesFromLength();
|
||
// UpdateHeadRestLenFromCurrentLength();
|
||
//
|
||
// Simulate_VerletFast();
|
||
//
|
||
//
|
||
// for (int it = 0; it < iterations; it++)
|
||
// {
|
||
// LockAnchorsHard();
|
||
// SolveDistanceConstraints_HeadOnly_Fast();
|
||
// }
|
||
//
|
||
// SolveHardDistanceConstraints(hardTightenIterations);
|
||
// LockAnchorsHard();
|
||
//
|
||
// if (constrainToGround)
|
||
// {
|
||
// _groundFrameCounter++;
|
||
// if (_groundFrameCounter >= groundUpdateEvery)
|
||
// {
|
||
// _groundFrameCounter = 0;
|
||
// ConstrainToGround();
|
||
// SolveHardDistanceConstraints(groundPostConstraintIterations);
|
||
// }
|
||
// }
|
||
//
|
||
// if (constrainToWaterSurface)
|
||
// {
|
||
// _waterFrameCounter++;
|
||
// if (_waterFrameCounter >= waterUpdateEvery)
|
||
// {
|
||
// _waterFrameCounter = 0;
|
||
// ConstrainToWaterSurface();
|
||
//
|
||
// // 水面抬升后补几次长度约束，让形状更顺一点
|
||
// SolveHardDistanceConstraints(waterPostConstraintIterations);
|
||
// }
|
||
// }
|
||
//
|
||
// LockAnchorsHard();
|
||
// }
|
||
//
|
||
// private void Update()
|
||
// {
|
||
// if (!startAnchor || !endAnchor || _pCurr == null || _physicsNodes < 2) return;
|
||
//
|
||
// RefreshAnchorTransforms();
|
||
// if (_isCulledByVisibility)
|
||
// return;
|
||
//
|
||
// EnsureRenderCaches();
|
||
//
|
||
// int last = _physicsNodes - 1;
|
||
//
|
||
// Vector3 s = _startTr.position;
|
||
// Vector3 e = _endTr.position;
|
||
//
|
||
// _pCurr[0] = s;
|
||
// _pCurr[last] = e;
|
||
// // _pPrev[0] = s;
|
||
// // _pPrev[last] = e;
|
||
//
|
||
// DrawHighResLine_Fast();
|
||
// }
|
||
//
|
||
// private void UpdateLengthSmooth()
|
||
// {
|
||
// float minFeasible = 0.01f;
|
||
// float desired = Mathf.Max(_targetLength, minFeasible);
|
||
//
|
||
// _currentLength = Mathf.SmoothDamp(
|
||
// _currentLength,
|
||
// desired,
|
||
// ref _lengthSmoothVel,
|
||
// lengthSmoothTime,
|
||
// Mathf.Infinity,
|
||
// Time.fixedDeltaTime
|
||
// );
|
||
//
|
||
// // 长度变化时额外压一点速度，减少收放线时抖动
|
||
// float delta = Mathf.Abs(_targetLength - _currentLength);
|
||
// if (delta > 0.0001f && lengthChangeVelocityKill > 0f)
|
||
// {
|
||
// float keep = 1f - Mathf.Clamp01(lengthChangeVelocityKill);
|
||
// for (int i = 1; i < _physicsNodes - 1; i++)
|
||
// {
|
||
// Vector3 curr = _pCurr[i];
|
||
// Vector3 prev = _pPrev[i];
|
||
// Vector3 disp = curr - prev;
|
||
// _pPrev[i] = curr - disp * keep;
|
||
// }
|
||
// }
|
||
// }
|
||
//
|
||
// private void UpdateNodesFromLength()
|
||
// {
|
||
// int desired = ComputeDesiredNodesStable(_currentLength);
|
||
// desired = Mathf.Clamp(desired, 2, maxPhysicsNodes);
|
||
// if (desired == _physicsNodes) return;
|
||
//
|
||
// if (desired > _physicsNodes) AddNodesAtStart(desired - _physicsNodes);
|
||
// else RemoveNodesAtStart(_physicsNodes - desired);
|
||
//
|
||
// _physicsNodes = desired;
|
||
// }
|
||
//
|
||
// private void AddNodesAtStart(int addCount)
|
||
// {
|
||
// if (addCount <= 0) return;
|
||
//
|
||
// int oldCount = _physicsNodes;
|
||
// int newCount = Mathf.Min(oldCount + addCount, maxPhysicsNodes);
|
||
// addCount = newCount - oldCount;
|
||
// if (addCount <= 0) return;
|
||
//
|
||
// Array.Copy(_pCurr, 1, _pCurr, 1 + addCount, oldCount - 1);
|
||
// Array.Copy(_pPrev, 1, _pPrev, 1 + addCount, oldCount - 1);
|
||
//
|
||
// Vector3 s = _startTr ? _startTr.position : startAnchor.position;
|
||
//
|
||
// Vector3 dir = Vector3.down;
|
||
// int firstOld = 1 + addCount;
|
||
// if (oldCount >= 2 && firstOld < maxPhysicsNodes)
|
||
// {
|
||
// Vector3 toOld1 = (_pCurr[firstOld] - s);
|
||
// float sq = toOld1.sqrMagnitude;
|
||
// if (sq > 1e-6f) dir = toOld1 / Mathf.Sqrt(sq);
|
||
// }
|
||
//
|
||
// Vector3 inheritDisp = Vector3.zero;
|
||
// if (oldCount >= 2 && firstOld < maxPhysicsNodes)
|
||
// inheritDisp = (_pCurr[firstOld] - _pPrev[firstOld]);
|
||
//
|
||
// for (int k = 1; k <= addCount; k++)
|
||
// {
|
||
// Vector3 pos = s + dir * (physicsSegmentLen * k);
|
||
// _pCurr[k] = pos;
|
||
// _pPrev[k] = pos - inheritDisp;
|
||
// }
|
||
//
|
||
// LockAnchorsHard();
|
||
// }
|
||
//
|
||
// private void RemoveNodesAtStart(int removeCount)
|
||
// {
|
||
// if (removeCount <= 0) return;
|
||
//
|
||
// int oldCount = _physicsNodes;
|
||
// int newCount = Mathf.Max(oldCount - removeCount, 2);
|
||
// removeCount = oldCount - newCount;
|
||
// if (removeCount <= 0) return;
|
||
//
|
||
// Array.Copy(_pCurr, 1 + removeCount, _pCurr, 1, newCount - 2);
|
||
// Array.Copy(_pPrev, 1 + removeCount, _pPrev, 1, newCount - 2);
|
||
//
|
||
// LockAnchorsHard();
|
||
// }
|
||
//
|
||
// private void UpdateHeadRestLenFromCurrentLength()
|
||
// {
|
||
// int fixedSegCount = Mathf.Max(0, _physicsNodes - 2);
|
||
// float baseLen = fixedSegCount * physicsSegmentLen;
|
||
//
|
||
// _headRestLen = _currentLength - baseLen;
|
||
// _headRestLen = Mathf.Clamp(_headRestLen, headMinLen, physicsSegmentLen * 1.5f);
|
||
// }
|
||
//
|
||
// private void Simulate_VerletFast()
|
||
// {
|
||
// for (int i = 1; i < _physicsNodes - 1; i++)
|
||
// {
|
||
// Vector3 disp = _pCurr[i] - _pPrev[i];
|
||
//
|
||
// disp.x *= _kXZ;
|
||
// disp.z *= _kXZ;
|
||
// disp.y *= _kY;
|
||
//
|
||
// disp *= velocityDampen;
|
||
//
|
||
// Vector3 next = _pCurr[i] + disp + _gravity * _dt2;
|
||
//
|
||
// _pPrev[i] = _pCurr[i];
|
||
// _pCurr[i] = next;
|
||
// }
|
||
// }
|
||
//
|
||
// private void LockAnchorsHard()
|
||
// {
|
||
// if (!startAnchor || !endAnchor || _pCurr == null || _pPrev == null || _physicsNodes < 2) return;
|
||
//
|
||
// Vector3 s = _startTr ? _startTr.position : startAnchor.position;
|
||
// Vector3 e = _endTr ? _endTr.position : endAnchor.position;
|
||
//
|
||
// _pCurr[0] = s;
|
||
// _pPrev[0] = s - startAnchor.linearVelocity * _dt;
|
||
//
|
||
// int last = _physicsNodes - 1;
|
||
// _pCurr[last] = e;
|
||
// _pPrev[last] = e - endAnchor.linearVelocity * _dt;
|
||
// }
|
||
//
|
||
// private void SolveDistanceConstraints_HeadOnly_Fast()
|
||
// {
|
||
// SolveDistanceConstraints_HeadOnly_Bidirectional(stiffness);
|
||
// }
|
||
//
|
||
// private void SolveHardDistanceConstraints(int extraIterations)
|
||
// {
|
||
// for (int it = 0; it < extraIterations; it++)
|
||
// {
|
||
// LockAnchorsHard();
|
||
// SolveDistanceConstraints_HeadOnly_Hard();
|
||
// }
|
||
// }
|
||
//
|
||
// private void SolveDistanceConstraints_HeadOnly_Hard()
|
||
// {
|
||
// SolveDistanceConstraints_HeadOnly_Bidirectional(1f);
|
||
// }
|
||
//
|
||
// private void SolveDistanceConstraints_HeadOnly_Bidirectional(float combinedStiffness)
|
||
// {
|
||
// int last = _physicsNodes - 1;
|
||
// if (last <= 0) return;
|
||
//
|
||
// float clamped = Mathf.Clamp01(combinedStiffness);
|
||
// float sweepStiffness = (clamped >= 0.999999f) ? 1f : 1f - Mathf.Sqrt(1f - clamped);
|
||
// SolveDistanceConstraintsSweep_Fast(0, last, 1, last, sweepStiffness);
|
||
// SolveDistanceConstraintsSweep_Fast(last - 1, -1, -1, last, sweepStiffness);
|
||
// }
|
||
//
|
||
// private void SolveDistanceConstraintsSweep_Fast(int start, int endExclusive, int step, int last, float sweepStiffness)
|
||
// {
|
||
// for (int i = start; i != endExclusive; i += step)
|
||
// {
|
||
// float rest = (i == 0) ? _headRestLen : physicsSegmentLen;
|
||
//
|
||
// Vector3 a = _pCurr[i];
|
||
// Vector3 b = _pCurr[i + 1];
|
||
//
|
||
// Vector3 delta = b - a;
|
||
// float sq = delta.sqrMagnitude;
|
||
// if (sq < 1e-12f) continue;
|
||
//
|
||
// float dist = Mathf.Sqrt(sq);
|
||
// float diff = (dist - rest) / dist;
|
||
// Vector3 corr = delta * (diff * sweepStiffness);
|
||
//
|
||
// bool aLocked = (i == 0);
|
||
// bool bLocked = (i + 1 == last);
|
||
//
|
||
// if (!aLocked && !bLocked)
|
||
// {
|
||
// _pCurr[i] = a + corr * 0.5f;
|
||
// _pCurr[i + 1] = b - corr * 0.5f;
|
||
// }
|
||
// else if (aLocked && !bLocked)
|
||
// {
|
||
// _pCurr[i + 1] = b - corr; // 首段：node1 吃满
|
||
// }
|
||
// else if (!aLocked)
|
||
// {
|
||
// _pCurr[i] = a + corr; // 尾段：last-1 吃满
|
||
// }
|
||
// // 两边都锁的情况理论上不会出现
|
||
// }
|
||
// }
|
||
//
|
||
// private void ConstrainToGround()
|
||
// {
|
||
// if (groundMask == 0) return;
|
||
//
|
||
// int last = _physicsNodes - 1;
|
||
// int step = Mathf.Max(1, groundSampleStep);
|
||
//
|
||
// int prevSampleIdx = 1;
|
||
// float prevMinY = SampleMinY(_pCurr[prevSampleIdx]);
|
||
//
|
||
// ApplyMinY(prevSampleIdx, prevMinY);
|
||
//
|
||
// for (int i = 1 + step; i < last; i += step)
|
||
// {
|
||
// float nextMinY = SampleMinY(_pCurr[i]);
|
||
// ApplyMinY(i, nextMinY);
|
||
//
|
||
// if (groundInterpolate)
|
||
// {
|
||
// int a = prevSampleIdx;
|
||
// int b = i;
|
||
// int span = b - a;
|
||
// for (int j = 1; j < span; j++)
|
||
// {
|
||
// int idx = a + j;
|
||
// float t = j / (float)span;
|
||
// float minY = Mathf.Lerp(prevMinY, nextMinY, t);
|
||
// ApplyMinY(idx, minY);
|
||
// }
|
||
// }
|
||
// else
|
||
// {
|
||
// for (int idx = prevSampleIdx + 1; idx < i; idx++)
|
||
// ApplyMinY(idx, prevMinY);
|
||
// }
|
||
//
|
||
// prevSampleIdx = i;
|
||
// prevMinY = nextMinY;
|
||
// }
|
||
//
|
||
// for (int i = prevSampleIdx + 1; i < last; i++)
|
||
// ApplyMinY(i, prevMinY);
|
||
// }
|
||
//
|
||
// private float SampleMinY(Vector3 p)
|
||
// {
|
||
// Vector3 origin = p + Vector3.up * groundCastHeight;
|
||
// if (Physics.Raycast(origin, Vector3.down, out RaycastHit hit, groundCastDistance, groundMask,
|
||
// QueryTriggerInteraction.Ignore))
|
||
// return hit.point.y + groundRadius;
|
||
//
|
||
// return float.NegativeInfinity;
|
||
// }
|
||
//
|
||
// private void ApplyMinY(int i, float minY)
|
||
// {
|
||
// if (float.IsNegativeInfinity(minY)) return;
|
||
//
|
||
// Vector3 p = _pCurr[i];
|
||
// if (p.y < minY)
|
||
// {
|
||
// p.y = minY;
|
||
// _pCurr[i] = p;
|
||
//
|
||
// // prev 同步抬上来，避免下一帧又被惯性拉回去造成抖动
|
||
// Vector3 prev = _pPrev[i];
|
||
// if (prev.y < minY) prev.y = minY;
|
||
// _pPrev[i] = prev;
|
||
// }
|
||
// }
|
||
//
|
||
// private void ConstrainToWaterSurface()
|
||
// {
|
||
// int last = _physicsNodes - 1;
|
||
// if (last <= 1) return;
|
||
//
|
||
// int step = Mathf.Max(1, waterSampleStep);
|
||
// float surfaceY = waterLevelY + waterSurfaceOffset;
|
||
// bool startUnderWater = _pCurr[0].y < surfaceY;
|
||
// int startAdjacentIdx = GetStartAdjacentNodeIndex(last);
|
||
//
|
||
// int prevSampleIdx = 1;
|
||
// float prevSurfaceY = surfaceY;
|
||
//
|
||
// ApplyWaterSurface(prevSampleIdx, prevSurfaceY, startUnderWater, startAdjacentIdx);
|
||
//
|
||
// for (int i = 1 + step; i < last; i += step)
|
||
// {
|
||
// float nextSurfaceY = surfaceY;
|
||
// ApplyWaterSurface(i, nextSurfaceY, startUnderWater, startAdjacentIdx);
|
||
//
|
||
// if (waterInterpolate)
|
||
// {
|
||
// int a = prevSampleIdx;
|
||
// int b = i;
|
||
// int span = b - a;
|
||
// for (int j = 1; j < span; j++)
|
||
// {
|
||
// int idx = a + j;
|
||
// float t = j / (float)span;
|
||
// float y = Mathf.Lerp(prevSurfaceY, nextSurfaceY, t);
|
||
// ApplyWaterSurface(idx, y, startUnderWater, startAdjacentIdx);
|
||
// }
|
||
// }
|
||
// else
|
||
// {
|
||
// for (int idx = prevSampleIdx + 1; idx < i; idx++)
|
||
// ApplyWaterSurface(idx, prevSurfaceY, startUnderWater, startAdjacentIdx);
|
||
// }
|
||
//
|
||
// prevSampleIdx = i;
|
||
// prevSurfaceY = nextSurfaceY;
|
||
// }
|
||
//
|
||
// for (int i = prevSampleIdx + 1; i < last; i++)
|
||
// ApplyWaterSurface(i, prevSurfaceY, startUnderWater, startAdjacentIdx);
|
||
// }
|
||
//
|
||
// private int GetStartAdjacentNodeIndex(int last)
|
||
// {
|
||
// if (last <= 1) return 1;
|
||
//
|
||
// Vector3 s = _pCurr[0];
|
||
// float d1 = (_pCurr[1] - s).sqrMagnitude;
|
||
// float d2 = (_pCurr[last - 1] - s).sqrMagnitude;
|
||
// return d1 <= d2 ? 1 : last - 1;
|
||
// }
|
||
//
|
||
// private void ApplyWaterSurface(int i, float surfaceY, bool startUnderWater, int startAdjacentIdx)
|
||
// {
|
||
// if (keepStartAdjacentNodeFollow && startUnderWater && i == startAdjacentIdx)
|
||
// {
|
||
// Vector3 s = _pCurr[0];
|
||
// _pCurr[i] = s;
|
||
// _pPrev[i] = s;
|
||
// return;
|
||
// }
|
||
//
|
||
// Vector3 p = _pCurr[i];
|
||
// if (p.y < surfaceY)
|
||
// {
|
||
// p.y = Mathf.Lerp(p.y, surfaceY, waterLiftStrength);
|
||
// _pCurr[i] = p;
|
||
//
|
||
// // 渐进同步 prev，削弱向下惯性，避免反复穿透水面
|
||
// Vector3 prev = _pPrev[i];
|
||
// if (prev.y < p.y) prev.y = Mathf.Lerp(prev.y, p.y, waterLiftStrength);
|
||
// _pPrev[i] = prev;
|
||
// }
|
||
// }
|
||
//
|
||
// private void DrawHighResLine_Fast()
|
||
// {
|
||
// if (_pCurr == null || _physicsNodes < 2) return;
|
||
//
|
||
// float w = lineWidth * LineMultiple;
|
||
// _lineRenderer.startWidth = w;
|
||
// _lineRenderer.endWidth = w;
|
||
//
|
||
// if (!smooth)
|
||
// {
|
||
// _lineRenderer.positionCount = _physicsNodes;
|
||
// _lineRenderer.SetPositions(_pCurr);
|
||
// return;
|
||
// }
|
||
//
|
||
// int subdiv = PickRenderSubdivisions_Fast();
|
||
// TCaches tc = (subdiv == renderSubdivisionsMoving) ? _tMoving : _tIdle;
|
||
//
|
||
// int needed = (_physicsNodes - 1) * subdiv + 1;
|
||
// if (needed > _rCapacity)
|
||
// {
|
||
// _rCapacity = needed;
|
||
// _rPoints = new Vector3[_rCapacity];
|
||
// }
|
||
//
|
||
// int idx = 0;
|
||
// int last = _physicsNodes - 1;
|
||
//
|
||
// for (int seg = 0; seg < last; seg++)
|
||
// {
|
||
// int i0 = seg - 1;
|
||
// if (i0 < 0) i0 = 0;
|
||
// int i1 = seg;
|
||
// int i2 = seg + 1;
|
||
// int i3 = seg + 2;
|
||
// if (i3 > last) i3 = last;
|
||
//
|
||
// Vector3 p0 = _pCurr[i0];
|
||
// Vector3 p1 = _pCurr[i1];
|
||
// Vector3 p2 = _pCurr[i2];
|
||
// Vector3 p3 = _pCurr[i3];
|
||
//
|
||
// for (int s = 0; s < subdiv; s++)
|
||
// {
|
||
// float t = tc.t[s];
|
||
// float t2 = tc.t2[s];
|
||
// float t3 = tc.t3[s];
|
||
//
|
||
// Vector3 cr =
|
||
// 0.5f * (
|
||
// (2f * p1) +
|
||
// (-p0 + p2) * t +
|
||
// (2f * p0 - 5f * p1 + 4f * p2 - p3) * t2 +
|
||
// (-p0 + 3f * p1 - 3f * p2 + p3) * t3
|
||
// );
|
||
//
|
||
// // y 也使用平滑曲线，再做单调夹紧；避免垂直时因为线性 y 插值导致切线断裂，看起来像折线。
|
||
// cr.y = ClampMonotonic(cr.y, p0.y, p1.y, p2.y, p3.y);
|
||
//
|
||
// _rPoints[idx++] = cr;
|
||
// }
|
||
// }
|
||
//
|
||
// _rPoints[idx++] = _pCurr[last];
|
||
//
|
||
// _lineRenderer.positionCount = idx;
|
||
// _lineRenderer.SetPositions(_rPoints);
|
||
// }
|
||
//
|
||
// private static float ClampMonotonic(float value, float p0, float p1, float p2, float p3)
|
||
// {
|
||
// bool rising = p0 <= p1 && p1 <= p2 && p2 <= p3;
|
||
// bool falling = p0 >= p1 && p1 >= p2 && p2 >= p3;
|
||
// if (!rising && !falling)
|
||
// return value;
|
||
//
|
||
// float min = Mathf.Min(p1, p2);
|
||
// float max = Mathf.Max(p1, p2);
|
||
// return Mathf.Clamp(value, min, max);
|
||
// }
|
||
//
|
||
// private int PickRenderSubdivisions_Fast()
|
||
// {
|
||
// int idle = Mathf.Max(1, renderSubdivisionsIdle);
|
||
// int moving = Mathf.Max(1, renderSubdivisionsMoving);
|
||
//
|
||
// float thr = movingSpeedThreshold;
|
||
// float thrSq = (thr * _dt) * (thr * _dt);
|
||
//
|
||
// float sumSq = 0f;
|
||
// int count = Mathf.Max(1, _physicsNodes - 2);
|
||
//
|
||
// for (int i = 1; i < _physicsNodes - 1; i++)
|
||
// {
|
||
// Vector3 disp = _pCurr[i] - _pPrev[i];
|
||
// sumSq += disp.sqrMagnitude;
|
||
// }
|
||
//
|
||
// float avgSq = sumSq / count;
|
||
//
|
||
// return (avgSq > thrSq) ? moving : idle;
|
||
// }
|
||
//
|
||
// private static void BuildTCaches(int subdiv, ref TCaches caches)
|
||
// {
|
||
// subdiv = Mathf.Max(1, subdiv);
|
||
// caches.t = new float[subdiv];
|
||
// caches.t2 = new float[subdiv];
|
||
// caches.t3 = new float[subdiv];
|
||
//
|
||
// float inv = 1f / subdiv;
|
||
// for (int s = 0; s < subdiv; s++)
|
||
// {
|
||
// float t = s * inv;
|
||
// float t2 = t * t;
|
||
// caches.t[s] = t;
|
||
// caches.t2[s] = t2;
|
||
// caches.t3[s] = t2 * t;
|
||
// }
|
||
// }
|
||
//
|
||
// private void OnDrawGizmosSelected()
|
||
// {
|
||
// if (_pCurr == null) return;
|
||
// Gizmos.color = Color.yellow;
|
||
// for (int i = 0; i < _physicsNodes; i++)
|
||
// Gizmos.DrawSphere(_pCurr[i], 0.01f);
|
||
// }
|
||
// }
|