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``` docs(readme): 更新文档说明 - 添加项目使用指南 - 完善API接口说明 - 修正错误的配置示例 ``` 注意：由于您提供的code differences部分为空，以上是一个示例模板。当您有具体的代码变更时，请提供详细的变更内容以便生成更准确的commit message。
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using UnityEngine;
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using UnityEngine.EventSystems;
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/// <summary>
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/// 建筑攻击标志控制器（双阵营）：每个阵营各自一个攻击标志，默认指向敌方主城堡。
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/// 本地玩家点击建筑切换自己阵营的标志；两方标志同时显示，指向同一建筑时并排错开。
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/// 单位寻敌：周围有敌人打敌人，否则直奔己方标志建筑；到达后是我方阵营（增援完成）→ 己方标志切回主城堡。
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/// </summary>
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public class AttackTargetController : MonoBehaviour
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{
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public static AttackTargetController Instance { get; private set; }
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[Header("蓝方(teamId=0)攻击目标")]
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public GameObject blueTarget;
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[Header("红方(teamId=1)攻击目标")]
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public GameObject redTarget;
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[Header("标志视觉（头顶箭头）")]
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[Tooltip("标志 Prefab：拖入自定义图标替换默认箭头；留空时代码生成默认箭头")]
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[SerializeField] private GameObject markerPrefab;
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[Tooltip("标志相对建筑包围盒顶部的额外高度")]
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[SerializeField] private float markerHeightOffset = 0.8f;
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[Tooltip("双方标志指向同一建筑时的并排错开距离")]
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[SerializeField] private float markerSideOffset = 1.1f;
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[Tooltip("建筑子级下该名字的空物体 = 标志锚点（可选，编辑器可调位置）")]
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[SerializeField] private string anchorName = "标志锚点";
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private Transform blueMarker;
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private Transform redMarker;
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private Renderer[] blueMarkerRenderers;
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private Renderer[] redMarkerRenderers;
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private GameObject cachedBlueEnemyCastle; // teamId 0 的敌方主城堡（红色城堡）
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private GameObject cachedRedEnemyCastle; // teamId 1 的敌方主城堡（蓝色城堡）
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private float nextCastleRefreshTime;
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private const float CastleRefreshInterval = 0.5f;
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private Camera mainCamera;
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private static readonly int TintColorId = Shader.PropertyToID("_TintColor");
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private static readonly int ColorId = Shader.PropertyToID("_Color");
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private static readonly Color BlueColor = new Color(0.2f, 0.55f, 1f, 0.95f);
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private static readonly Color RedColor = new Color(1f, 0.2f, 0.15f, 0.95f);
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private MaterialPropertyBlock propertyBlock;
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private void Awake()
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{
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if (Instance != null && Instance != this) { Destroy(gameObject); return; }
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Instance = this;
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}
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private void Start()
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{
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mainCamera = Camera.main;
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CreateMarkers();
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blueTarget = GetEnemyCastleOfTeam(0);
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redTarget = GetEnemyCastleOfTeam(1);
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Debug.Log($"攻击标志初始: 蓝方→{blueTarget?.name ?? "未找到"} 红方→{redTarget?.name ?? "未找到"}");
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}
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private void Update()
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{
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// 主城堡引用失效时定期重查（场景加载时序容错）
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if ((cachedBlueEnemyCastle == null || cachedRedEnemyCastle == null) && Time.time >= nextCastleRefreshTime)
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{
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nextCastleRefreshTime = Time.time + CastleRefreshInterval;
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cachedBlueEnemyCastle = FindBuilding("红色城堡");
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cachedRedEnemyCastle = FindBuilding("蓝色城堡");
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if (blueTarget == null && cachedBlueEnemyCastle != null) blueTarget = cachedBlueEnemyCastle;
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if (redTarget == null && cachedRedEnemyCastle != null) redTarget = cachedRedEnemyCastle;
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}
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HandleClick();
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}
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// 点击建筑：只切换本地玩家阵营的攻击标志
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private void HandleClick()
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{
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if (mainCamera == null) mainCamera = Camera.main;
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if (mainCamera == null) return;
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bool clicked = Input.GetMouseButtonDown(0)
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|| (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began);
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if (!clicked) return;
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// 点击落在 UI 上不处理
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if (EventSystem.current != null)
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{
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if (Input.touchCount > 0)
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{
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if (EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId)) return;
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}
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else if (EventSystem.current.IsPointerOverGameObject()) return;
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}
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Vector2 screenPos = Input.touchCount > 0 ? (Vector2)Input.GetTouch(0).position : Input.mousePosition;
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Ray ray = mainCamera.ScreenPointToRay(screenPos);
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if (Physics.Raycast(ray, out RaycastHit hit, 500f))
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{
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Transform building = FindBuildingInParents(hit.collider.transform);
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if (building == null) return;
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int localTeam = GameManager.Instance != null ? GameManager.Instance.LocalPlayerTeamId : 0;
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// 点自己方主城堡无效
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if (building.name == GetTeamCastleName(localTeam)) return;
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if (localTeam == 0)
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{
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blueTarget = building.gameObject;
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}
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else
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{
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redTarget = building.gameObject;
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}
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Debug.Log($"{(localTeam == 0 ? "蓝方" : "红方")}攻击标志 → {building.name}");
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}
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}
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/// <summary>获取阵营当前的攻击目标（无效时兜底敌方主城堡）。单位出生时调用一次做使命快照。</summary>
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public GameObject GetTeamTarget(int teamId)
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{
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GameObject t = teamId == 0 ? blueTarget : redTarget;
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if (t != null && t.activeInHierarchy) return t;
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return GetEnemyCastleOfTeam(teamId);
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}
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/// <summary>获取阵营的敌方主城堡（teamId 0→红色城堡，1→蓝色城堡），带缓存。</summary>
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public GameObject GetEnemyCastleOfTeam(int teamId)
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{
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if (teamId == 0)
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{
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if (cachedBlueEnemyCastle == null || !cachedBlueEnemyCastle.activeInHierarchy)
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{
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cachedBlueEnemyCastle = FindBuilding("红色城堡");
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}
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return cachedBlueEnemyCastle;
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}
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if (cachedRedEnemyCastle == null || !cachedRedEnemyCastle.activeInHierarchy)
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{
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cachedRedEnemyCastle = FindBuilding("蓝色城堡");
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}
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return cachedRedEnemyCastle;
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}
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private static GameObject FindBuilding(string name)
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{
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var found = GameObject.Find(name);
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return found != null && found.CompareTag("Building") ? found : null;
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}
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private static string GetTeamCastleName(int teamId)
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{
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return teamId == 0 ? "蓝色城堡" : "红色城堡";
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}
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private static Transform FindBuildingInParents(Transform t)
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{
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while (t != null)
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{
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if (t.CompareTag("Building")) return t;
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t = t.parent;
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}
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return null;
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}
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// 双标志：位置/朝向/颜色（指向同一建筑时并排）
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private void LateUpdate()
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{
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if (mainCamera == null) mainCamera = Camera.main;
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bool sameBuilding = blueTarget != null && blueTarget == redTarget;
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float blueSide = sameBuilding ? markerSideOffset : 0f;
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float redSide = sameBuilding ? -markerSideOffset : 0f;
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UpdateMarker(blueMarker, blueMarkerRenderers, blueTarget, BlueColor, blueSide);
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UpdateMarker(redMarker, redMarkerRenderers, redTarget, RedColor, redSide);
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}
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private void UpdateMarker(Transform marker, Renderer[] renderers, GameObject target, Color color, float sideOffset)
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{
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if (marker == null) return;
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if (target == null)
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{
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marker.gameObject.SetActive(false);
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return;
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}
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marker.gameObject.SetActive(true);
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// 位置：锚点优先（可选），否则建筑包围盒顶部 + 高度偏移
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Vector3 pos;
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Transform anchor = target.transform.Find(anchorName);
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if (anchor != null)
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{
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pos = anchor.position;
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}
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else
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{
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Bounds bounds = CalculateTargetBounds(target);
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pos = new Vector3(target.transform.position.x, bounds.max.y + markerHeightOffset, target.transform.position.z);
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}
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// 指向同一建筑时沿相机右方向并排错开
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if (sideOffset != 0f && mainCamera != null)
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{
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pos += mainCamera.transform.right * sideOffset;
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}
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marker.position = pos;
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// billboard：箭头尖朝下指着建筑
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if (mainCamera != null)
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{
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Vector3 toCamera = mainCamera.transform.position - marker.position;
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marker.rotation = Quaternion.LookRotation(toCamera) * Quaternion.Euler(90f, 0f, 0f);
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}
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// 颜色按标志所属阵营
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if (renderers == null) return;
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propertyBlock ??= new MaterialPropertyBlock();
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foreach (Renderer rend in renderers)
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{
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if (rend == null) continue;
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rend.GetPropertyBlock(propertyBlock);
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propertyBlock.SetColor(TintColorId, color);
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propertyBlock.SetColor(ColorId, color);
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rend.SetPropertyBlock(propertyBlock);
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}
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}
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private static Bounds CalculateTargetBounds(GameObject target)
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{
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var renderers = target.GetComponentsInChildren<Renderer>();
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if (renderers.Length == 0) return new Bounds(target.transform.position, Vector3.one);
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Bounds b = renderers[0].bounds;
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for (int i = 1; i < renderers.Length; i++) b.Encapsulate(renderers[i].bounds);
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return b;
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}
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private void CreateMarkers()
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{
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if (blueMarker != null && redMarker != null) return;
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blueMarker = CreateMarker("蓝方攻击标志", BlueColor);
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blueMarkerRenderers = blueMarker.GetComponentsInChildren<Renderer>();
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redMarker = CreateMarker("红方攻击标志", RedColor);
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redMarkerRenderers = redMarker.GetComponentsInChildren<Renderer>();
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}
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private Transform CreateMarker(string name, Color color)
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{
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GameObject markerGo;
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// 优先用可替换的标志 Prefab（可在 Inspector 拖入自定义图标）
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if (markerPrefab != null)
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{
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markerGo = Instantiate(markerPrefab, transform);
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markerGo.name = name;
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}
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else
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{
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// 兜底：代码生成默认倒锥箭头（尖朝下指着建筑）
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markerGo = new GameObject(name, typeof(MeshFilter), typeof(MeshRenderer));
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markerGo.transform.SetParent(transform, false);
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markerGo.GetComponent<MeshFilter>().sharedMesh = CreateArrowMesh();
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var mat = new Material(Shader.Find("Legacy Shaders/Particles/Additive"));
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mat.SetColor(TintColorId, color);
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markerGo.GetComponent<Renderer>().sharedMaterial = mat;
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}
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return markerGo.transform;
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}
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// 4面锥体：尖朝下，高2，底半径0.7
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private static Mesh CreateArrowMesh()
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{
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var mesh = new Mesh();
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mesh.name = "AttackMarkerArrow";
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Vector3 tip = new Vector3(0f, -1.2f, 0f);
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Vector3[] baseQuad = {
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new Vector3(-0.7f, 0.8f, -0.7f), new Vector3(0.7f, 0.8f, -0.7f),
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new Vector3(0.7f, 0.8f, 0.7f), new Vector3(-0.7f, 0.8f, 0.7f)
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};
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var vertices = new System.Collections.Generic.List<Vector3>();
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var normals = new System.Collections.Generic.List<Vector3>();
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void AddFace(Vector3 a, Vector3 b, Vector3 c, Vector3 n)
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{
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vertices.AddRange(new[] { a, b, c });
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normals.AddRange(new[] { n, n, n });
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}
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AddFace(baseQuad[0], baseQuad[1], tip, new Vector3(0f, 0f, -1f)); // 后
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AddFace(baseQuad[1], baseQuad[2], tip, new Vector3(1f, 0f, 0f)); // 右
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AddFace(baseQuad[2], baseQuad[3], tip, new Vector3(0f, 0f, 1f)); // 前
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AddFace(baseQuad[3], baseQuad[0], tip, new Vector3(-1f, 0f, 0f)); // 左
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mesh.SetVertices(vertices);
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mesh.SetNormals(normals);
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mesh.triangles = new int[] { 0,1,2, 3,4,5, 6,7,8, 9,10,11 };
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mesh.RecalculateBounds();
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return mesh;
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}
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}
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