阶段性完成

Assets/Scripts/SLSUtilities/Effects/VFXRaycastInteraction.cs

@@ -0,0 +1,140 @@
+using System.Collections.Generic;
+using Lean.Pool;
+using Sirenix.OdinInspector;
+using UnityEngine;
+
+namespace SLSUtilities.Effects
+{
+    public class VFXRaycastInteraction : MonoBehaviour, IPoolable
+    {
+        [Header("核心设置")]
+        [Tooltip("在特效生成时是否立刻启用渐变，注意，必须通过对象池生成。\n为true时，渐变效果从targetLight的默认intensity开始，否则需要调用EnableFade方法启用渐变")]
+        public bool playOnSpawn = true;
+        public float life = 1f;
+        public List<float> checkPoints;
+        public int currentCheckPointIndex = 0;
+        public bool isEnabling = true;
+        public Transform startPoint;     // 刀尖的位置（用于发射射线）
+        public LayerMask collisionLayers;  // 地面图层
+        public float rayLength = 0.5f; // 射线长度（稍微比刀刃离地距离长一点）
+
+        [Header("特效资源")]
+        public GameObject sparkPrefab; // 火星特效 Prefab
+        public GameObject decalPrefab; // 划痕 Decal Prefab
+        
+        [HideInEditorMode]
+        [SerializeField]
+        private bool isFading;
+        [HideInEditorMode]
+        [SerializeField]
+        private float time;
+        private Vector3 _lastTipPosition;
+        
+        private void Reset()
+        {
+            startPoint = transform;
+            collisionLayers = LayerMask.GetMask("Wall", "Ground");
+        }
+        
+        public void OnSpawn()
+        {
+            if (playOnSpawn && !isEnabling)
+            {
+                isEnabling = true;
+                time = 0f;
+                currentCheckPointIndex = 0;
+            }
+            
+            _lastTipPosition = startPoint.position;
+        }
+        
+        public void OnDespawn()
+        {
+            isEnabling = false;
+        }
+        
+        void Update()
+        {
+            time += Time.deltaTime;
+            if (time >= life)
+            {
+                isEnabling = false;
+            }
+            
+            if (!isEnabling || Time.timeScale == 0 || checkPoints.Count == 0) return;
+            
+            // 1. 计算刀尖速度方向（用于决定划痕朝向）
+            Vector3 velocity = (startPoint.position - _lastTipPosition) / Time.deltaTime;
+            _lastTipPosition = startPoint.position;
+
+            //1. 检查是否到达下一个检查点
+            if (currentCheckPointIndex < checkPoints.Count)
+            {
+                if (time >= checkPoints[currentCheckPointIndex])
+                {
+                    currentCheckPointIndex++;
+                }
+                else
+                {
+                    return; // 未到达检查点，跳过本次更新
+                }
+            }
+            else
+            {
+                return; // 所有检查点已处理完，跳过本次更新
+            }
+            
+
+            // 2. 发射射线检测地面
+            // 这里我们向下发射射线。如果你的游戏支持墙壁划痕，可以改为 velocity.normalized
+            
+            RaycastHit hit;
+            if (Physics.Raycast(startPoint.position, startPoint.forward, out hit, rayLength, collisionLayers))
+            {
+                SpawnEffects(hit, velocity);
+            }
+        }
+        
+        void SpawnEffects(RaycastHit hit, Vector3 slashVelocity)
+        {
+            Vector3 projectedSlashDir = Vector3.ProjectOnPlane(slashVelocity, hit.normal).normalized;
+            
+            // --- 处理火星 (Spark) ---
+            if (sparkPrefab != null)
+            {
+                // 关键点：使用 Quaternion.LookRotation(hit.normal)
+                // 这会让火星特效的 Z轴（发射方向）严格对准地面法线（垂直向上），right方向和挥动方向对齐
+                LeanPool.Spawn(sparkPrefab, hit.point, Quaternion.LookRotation(hit.normal, Vector3.Cross(projectedSlashDir, hit.normal)));
+            }
+
+            // --- 处理划痕 (Decal) ---
+            if (decalPrefab != null)
+            {
+                // 计算划痕的朝向：
+                // 我们希望划痕贴在地面上（法线对齐 hit.normal）
+                // 同时划痕的延伸方向要对齐刀的挥动方向（slashVelocity）
+                if (projectedSlashDir != Vector3.zero)
+                {
+                    // 计算 Decal 的旋转，Decal的forward和地面法线对齐，right方向和挥动方向对齐
+                    Quaternion decalRotation = Quaternion.LookRotation(hit.normal, Vector3.Cross(projectedSlashDir, hit.normal));
+                
+                    // 生成 Decal，稍微抬高一点点避免 Z-Fighting
+                    GameObject decal = LeanPool.Spawn(decalPrefab, hit.point + hit.normal * 0.01f, decalRotation);
+                
+                    // 记得在 Prefab 里设置自动销毁，或者在这里写 Destroy
+                    LeanPool.Despawn(decal, 5f);
+                }
+            }
+        }
+    
+        // 用于在 Scene 窗口调试射线，方便你调整 rayLength
+        void OnDrawGizmos()
+        {
+            if (startPoint != null)
+            {
+                Gizmos.color = Color.yellow;
+                Gizmos.DrawLine(startPoint.position, startPoint.position + transform.forward * rayLength);
+            }
+        }
+    }
+}

Assets/Scripts/SLSUtilities/Effects/VFXRaycastInteraction.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 0217139a1a991f947ac6135f8ea20a0c