tanqiu/assets/scripts/CombatSystem/BulletEffects/BulletHitEffect.ts

import { _decorator, Component, Node, Vec3, find, instantiate, Prefab, UITransform, resources, sp, CircleCollider2D, Contact2DType, Collider2D, IPhysics2DContact, Animation } from 'cc';
import { BulletTrajectory } from './BulletTrajectory';
import { HitEffectConfig } from '../../Core/ConfigManager';
import { PersistentSkillManager } from '../../FourUI/SkillSystem/PersistentSkillManager';
import { BurnEffect } from './BurnEffect';
import { GroundBurnArea } from './GroundBurnArea';
import { GroundBurnAreaManager } from './GroundBurnAreaManager';
import { WeaponBullet } from '../WeaponBullet';
import EventBus, { GameEvents } from '../../Core/EventBus';
import { Audio } from '../../AudioManager/AudioManager';
import { BundleLoader } from '../../Core/BundleLoader';
import { EnemyAttackStateManager } from '../EnemyAttackStateManager';
const { ccclass, property } = _decorator;

/**
 * 命中效果控制器
 * 负责处理可叠加的命中效果
 */
// 接口定义已移至ConfigManager.ts中的HitEffectConfig

export interface HitResult {
    shouldDestroy: boolean;    // 是否应该销毁子弹
    shouldContinue: boolean;   // 是否应该继续飞行
    shouldRicochet: boolean;   // 是否应该弹射
    damageDealt: number;       // 造成的伤害
}

@ccclass('BulletHitEffect')
export class BulletHitEffect extends Component {
    private hitEffects: HitEffectConfig[] = [];
    private hitCount: number = 0;
    private pierceCount: number = 0;
    private ricochetCount: number = 0;
    private activeBurnAreas: Node[] = [];
    // 爆炸一次性保护，防止同一子弹重复结算范围伤害
    private hasExploded: boolean = false;
    
    // 检测范围相关
    private detectionCollider: CircleCollider2D | null = null;
    private detectedEnemies: Set<Node> = new Set();
    
    // 锯齿草子弹状态管理
    private hasFirstHit: boolean = false;  // 是否已经首次击中敌人
    private currentTargetEnemy: Node | null = null;  // 当前击中的目标敌人
    
    // 默认特效路径（从WeaponBullet传入）
    private defaultHitEffectPath: string = '';
    private defaultTrailEffectPath: string = '';
    private defaultBurnEffectPath: string = '';

    public setDefaultEffects(hit: string | null, trail?: string | null, burn?: string | null) {
        if (hit) this.defaultHitEffectPath = hit;
        if (trail) this.defaultTrailEffectPath = trail;
        if (burn) this.defaultBurnEffectPath = burn;
    }
    
    /**
     * 初始化命中效果
     */
    public init(effects: HitEffectConfig[]) {
        // 按优先级排序
        this.hitEffects = [...effects].sort((a, b) => a.priority - b.priority);
        
        // 重置锯齿草状态
        this.resetSawGrassState();
        // 重置爆炸状态
        this.hasExploded = false;
        
        // 检查是否有手动添加的检测范围碰撞器
        this.setupDetectionColliderEvents();
    }

    /**
     * 是否包含爆炸效果
     */
    public hasExplosionEffect(): boolean {
        return Array.isArray(this.hitEffects) && this.hitEffects.some(e => e.type === 'explosion');
    }
    
    /**
     * 处理命中事件
     */
    public processHit(hitNode: Node, contactPos: Vec3): HitResult {
        // 检查是否是弹射后的命中
        const isRicochetHit = this.ricochetCount > 0;
        const hitType = isRicochetHit ? '弹射命中' : '直接命中';
                
        // 锯齿草子弹首次击中逻辑
        const weaponBullet = this.getComponent(WeaponBullet);
        const weaponInfo = weaponBullet ? weaponBullet.getWeaponInfo() : null;
        const weaponId = weaponInfo ? weaponInfo.getWeaponId() : null;
        
        if (weaponId === 'saw_grass' && !this.hasFirstHit && this.isEnemyNode(hitNode)) {
            this.hasFirstHit = true;
            this.currentTargetEnemy = hitNode;
        }
        
        this.hitCount++;
        
        const result: HitResult = {
            shouldDestroy: false,
            shouldContinue: false,
            shouldRicochet: false,
            damageDealt: 0
        };
        
        // 按优先级处理所有效果
        for (const effect of this.hitEffects) {
            const effectResult = this.processEffect(effect, hitNode, contactPos);
            
            // 累积伤害
            result.damageDealt += effectResult.damageDealt;
            
            // 处理控制逻辑（OR逻辑，任何一个效果要求的行为都会执行）
            if (effectResult.shouldDestroy) result.shouldDestroy = true;
            if (effectResult.shouldContinue) result.shouldContinue = true;
            if (effectResult.shouldRicochet) result.shouldRicochet = true;
        }
        
        // 逻辑优先级：销毁 > 弹射 > 继续
        if (result.shouldDestroy) {
            result.shouldContinue = false;
            result.shouldRicochet = false;
        } else if (result.shouldRicochet) {
            result.shouldContinue = false;
        }

        return result;
    }
    
    /**
     * 处理单个效果
     */
    private processEffect(effect: HitEffectConfig, hitNode: Node, contactPos: Vec3): HitResult {
        const result: HitResult = {
            shouldDestroy: false,
            shouldContinue: false,
            shouldRicochet: false,
            damageDealt: 0
        };
        
        switch (effect.type) {
            case 'normal_damage':
                result.damageDealt = this.processNormalDamage(effect, hitNode);
                result.shouldDestroy = true;
                break;
                
            case 'pierce_damage':
                result.damageDealt = this.processPierceDamage(effect, hitNode);
                break;
                
            case 'explosion':
                // 若已爆炸则不再重复结算伤害，只标记销毁
                if (!this.hasExploded) {
                    result.damageDealt = this.processExplosion(effect, contactPos);
                    this.hasExploded = true;
                }
                result.shouldDestroy = true;
                break;
                
            case 'ground_burn':
                this.processGroundBurn(effect, hitNode);
                break;
                
            case 'ricochet_damage':
                // 先判断是否可以弹射（在递增ricochetCount之前）
                const canRicochet = this.ricochetCount < (effect.ricochetCount || 0);
                result.damageDealt = this.processRicochetDamage(effect, hitNode);
                result.shouldRicochet = canRicochet;
                break;
        }
        
        return result;
    }
    
    /**
     * 处理普通伤害
     */
    private processNormalDamage(effect: any, hitNode: Node): number {
        // 使用WeaponBullet的最终伤害值而不是配置中的基础伤害
        const weaponBullet = this.getComponent(WeaponBullet);
        const damage = weaponBullet ? weaponBullet.getFinalDamage() : (effect.damage || 0);
                
        this.damageEnemy(hitNode, damage);
        this.spawnHitEffect(hitNode.worldPosition);
        return damage;
    }
    
    /**
     * 处理穿透伤害
     */
    private processPierceDamage(effect: HitEffectConfig, hitNode: Node): number {
        // 使用WeaponBullet的最终伤害值而不是配置中的基础伤害
        const weaponBullet = this.getComponent(WeaponBullet);
        const damage = weaponBullet ? weaponBullet.getFinalDamage() : (effect.damage || 0);
                
        this.damageEnemy(hitNode, damage);
        this.spawnHitEffect(hitNode.worldPosition);
        this.pierceCount++;
        return damage;
    }
    
    /**
     * 处理爆炸效果
     */
    private processExplosion(effect: HitEffectConfig, position: Vec3): number {
        // 使用WeaponBullet的最终伤害值而不是配置中的基础伤害
        const weaponBullet = this.getComponent(WeaponBullet);
        const explosionDamage = weaponBullet ? weaponBullet.getFinalDamage() : (effect.damage || 0);
                
        const scheduleExplosion = () => {
            // 播放爆炸音效
            this.playAttackSound();
            
            // 生成爆炸特效
            this.spawnExplosionEffect(position);
            
            // 对范围内敌人造成伤害
            const damage = this.damageEnemiesInRadius(position, effect.radius, explosionDamage);
            return damage;
        };
        
        // 立即爆炸，不使用任何延迟
        return scheduleExplosion();
    }
    
    /**
     * 处理地面燃烧区域效果
     */
    private processGroundBurn(effect: HitEffectConfig, hitNode: Node) {        
        // 获取地面燃烧区域管理器
        const burnAreaManager = GroundBurnAreaManager.getInstance();
        if (!burnAreaManager) {
            console.error('[BulletHitEffect] 无法获取GroundBurnAreaManager实例');
            return;
        }
        
        // 获取子弹的世界位置作为燃烧区域中心
        const burnPosition = this.node.worldPosition.clone();
        
        // 如果命中的是敌人，使用敌人的位置
        if (this.isEnemyNode(hitNode)) {
            burnPosition.set(hitNode.worldPosition);
        }
                
        try {
            // 获取武器子弹组件
            const weaponBullet = this.getComponent(WeaponBullet);
            
            // 通过管理器创建燃烧区域
            const burnAreaNode = burnAreaManager.createGroundBurnArea(
                burnPosition,
                effect,
                weaponBullet,
                this.defaultBurnEffectPath || this.defaultTrailEffectPath
            );
            
            if (burnAreaNode) {
                // 将燃烧区域添加到活跃列表中
                this.activeBurnAreas.push(burnAreaNode);
            }        
        } catch (error) {
            console.error('[BulletHitEffect] 通过管理器创建地面燃烧区域失败:', error);
        }
    }
    

    
    /**
     * 处理弹射伤害
     */
    private processRicochetDamage(effect: HitEffectConfig, hitNode: Node): number {
        // 使用WeaponBullet的最终伤害值而不是配置中的基础伤害
        const weaponBullet = this.getComponent(WeaponBullet);
        const damage = weaponBullet ? weaponBullet.getFinalDamage() : (effect.damage || 0);
                
        this.damageEnemy(hitNode, damage);
        
        // 检查是否还能继续弹射
        if (this.ricochetCount < effect.ricochetCount) {
            this.ricochetCount++;
            
            // 计算弹射方向
            this.calculateRicochetDirection(effect.ricochetAngle);
        } else {
            //console.log(`[BulletHitEffect] 弹射次数已达上限，不再弹射`);
        }
        
        return damage;
    }
    
    /**
     * 计算弹射方向
     */
    private calculateRicochetDirection(maxAngle: number) {
        const trajectory = this.getComponent(BulletTrajectory);
        if (!trajectory) return;
        
        // 获取武器子弹组件来确定检测范围
        const weaponBullet = this.getComponent(WeaponBullet);
        const weaponInfo = weaponBullet ? weaponBullet.getWeaponInfo() : null;
        const weaponId = weaponInfo ? weaponInfo.getWeaponId() : null;
        const detectionRange = weaponId ? this.getDetectionRange(weaponId) : 500;
        
        let nearestEnemy: Node | null = null;
        
        // 锯齿草武器使用专门的CircleCollider2D实时追踪逻辑
        if (weaponId === 'saw_grass') {
            nearestEnemy = this.findNearestEnemyForSawGrass(detectionRange);
        } else {
            // 其他武器使用原有的实时计算方法
            nearestEnemy = this.findNearestEnemy(detectionRange);
        }
        
        let newDirection: Vec3;
        
        if (nearestEnemy) {
            // 如果找到敌人，计算朝向敌人的方向
            const bulletPos = this.node.worldPosition;
            const enemyPos = nearestEnemy.worldPosition;
            
            // 计算基础方向（朝向敌人）
            const baseDirection = enemyPos.clone().subtract(bulletPos).normalize();
            
            // 添加随机偏移角度，让弹射不那么精确
            const angleRad = (Math.random() - 0.5) * maxAngle * Math.PI / 180;
            const cos = Math.cos(angleRad);
            const sin = Math.sin(angleRad);
            
            // 应用旋转偏移
            newDirection = new Vec3(
                baseDirection.x * cos - baseDirection.y * sin,
                baseDirection.x * sin + baseDirection.y * cos,
                0
            ).normalize();
            
            const weaponType = weaponId === 'saw_grass' ? '锯齿草CircleCollider2D' : '实时计算';
        } else {
            // 如果没有找到敌人，使用随机方向（保持原有逻辑）
            const currentVel = trajectory.getCurrentVelocity();
            const angleRad = (Math.random() - 0.5) * maxAngle * Math.PI / 180;
            const cos = Math.cos(angleRad);
            const sin = Math.sin(angleRad);
            
            newDirection = new Vec3(
                currentVel.x * cos - currentVel.y * sin,
                currentVel.x * sin + currentVel.y * cos,
                0
            ).normalize();
            
            const weaponType = weaponId === 'saw_grass' ? '锯齿草CircleCollider2D' : '实时计算';
        }
        
        // 使用弹道组件的changeDirection方法
        trajectory.changeDirection(newDirection);
    }
    
    /**
     * 对单个敌人造成伤害
     */
    private damageEnemy(enemyNode: Node, damage: number) {
        if (!this.isEnemyNode(enemyNode)) return;
        
        // 检查敌人是否处于漂移状态，如果是则跳过伤害
        const enemyInstance = enemyNode.getComponent('EnemyInstance') as any;
        if (enemyInstance && enemyInstance.isDrifting()) {
            console.log(`[BulletHitEffect] 敌人 ${enemyNode.name} 正在漂移中，跳过伤害处理`);
            return; // 漂移状态下不受到伤害
        }
        
        // 播放攻击音效
        this.playAttackSound();
        
        // 计算暴击伤害和暴击状态
        const damageResult = this.calculateCriticalDamage(damage);
        
        // 使用applyDamageToEnemy方法，通过EventBus发送伤害事件
        this.applyDamageToEnemy(enemyNode, damageResult.damage, damageResult.isCritical);
    }
    
    /**
     * 计算暴击伤害
     */
    private calculateCriticalDamage(baseDamage: number): { damage: number, isCritical: boolean } {
        // 获取武器子弹组件来计算暴击
        const weaponBullet = this.getComponent(WeaponBullet);
        if (!weaponBullet) {
            // 如果没有WeaponBullet组件，使用基础暴击率0%
            const critChance = 0;
            const isCritical = Math.random() < critChance;
            
            if (isCritical) {
                // 暴击伤害 = 基础伤害 × (1 + 暴击伤害倍率)，默认暴击倍率100%
                const critDamage = Math.round(baseDamage * (1 + 1.0)); // 四舍五入为整数
                this.showCriticalHitEffect();
                return { damage: critDamage, isCritical: true };
            }
            return { damage: baseDamage, isCritical: false };
        }
        
        // 获取暴击率
        const critChance = weaponBullet.getCritChance();
        
        // 检查是否触发暴击
        const isCritical = Math.random() < critChance;
        
        if (isCritical) {
            // 获取暴击伤害倍率（从技能系统）
            const critDamageMultiplier = this.getCritDamageMultiplier();
            
            // 暴击伤害 = 基础伤害 × (1 + 暴击伤害倍率)
            const critDamage = Math.round(baseDamage * (1 + critDamageMultiplier)); // 四舍五入为整数
            
            // 显示暴击特效
            this.showCriticalHitEffect();
                        
            return { damage: critDamage, isCritical: true };
        }
        
        return { damage: baseDamage, isCritical: false };
    }
    
    /**
     * 获取暴击伤害倍率
     */
    private getCritDamageMultiplier(): number {
        // 从局外技能系统获取暴击伤害加成
        const persistentSkillManager = PersistentSkillManager.getInstance();
        if (persistentSkillManager) {
            const bonuses = persistentSkillManager.getSkillBonuses();
            // critDamageBonus是百分比值，需要转换为倍率
            // 暴击伤害倍率 = 基础100% + 技能加成百分比
            return 1.0 + (bonuses.critDamageBonus || 0) / 100;
        }
        
        // 默认暴击倍率100%（即2倍伤害）
        return 1.0;
    }
    
    /**
     * 播放攻击音效
     */
    private playAttackSound() {
        try {
            // 获取武器子弹组件
            const weaponBullet = this.getComponent(WeaponBullet);
            if (!weaponBullet) {
                console.log('[BulletHitEffect] 未找到WeaponBullet组件，无法播放攻击音效');
                return;
            }
            
            // 获取武器配置
            const weaponConfig = weaponBullet.getWeaponConfig();
            if (!weaponConfig || !weaponConfig.visualConfig || !weaponConfig.visualConfig.attackSound) {
                console.log('[BulletHitEffect] 武器配置中未找到attackSound，跳过音效播放');
                return;
            }
            
            // 播放攻击音效
            const attackSoundPath = weaponConfig.visualConfig.attackSound;
            Audio.playWeaponSound(attackSoundPath);
            
        } catch (error) {
            console.error('[BulletHitEffect] 播放攻击音效时出错:', error);
        }
    }
    
    /**
     * 显示暴击特效
     */
    private showCriticalHitEffect() {
        // 这里可以添加暴击特效，比如特殊的粒子效果或音效
        // 暂时只在控制台输出，后续可以扩展
        console.log('[BulletHitEffect] 暴击特效触发！');
    }
    
    /**
     * 对范围内敌人造成伤害
     */
    private damageEnemiesInRadius(center: Vec3, radius: number, damage: number): number {
        const enemyContainer = find('Canvas/GameLevelUI/enemyContainer');
        if (!enemyContainer) return 0;
        
        let totalDamage = 0;
        const attackStateManager = EnemyAttackStateManager.getInstance();
        const enemies = enemyContainer.children.filter(child => {
            if (!child.active || !this.isEnemyNode(child)) return false;
            // 仅对可攻击敌人造成范围伤害
            return attackStateManager ? attackStateManager.isEnemyAttackable(child) : true;
        });
        
        // 对于持续伤害（如地面灼烧），直接使用传入的伤害值
        // 对于爆炸伤害，使用WeaponBullet的最终伤害值
        const baseDamage = damage;
        
        console.log(`[BulletHitEffect] 范围伤害 - 中心位置: (${center.x.toFixed(1)}, ${center.y.toFixed(1)}), 半径: ${radius}, 基础伤害: ${baseDamage}`);
        
        for (const enemy of enemies) {
            const distance = Vec3.distance(center, enemy.worldPosition);
            if (distance <= radius) {
                // 检查敌人是否处于漂移状态，如果是则跳过范围伤害
                const enemyInstance = enemy.getComponent('EnemyInstance') as any;
                if (enemyInstance && enemyInstance.isDrifting()) {
                    console.log(`[BulletHitEffect] 敌人 ${enemy.name} 正在漂移中，跳过范围伤害`);
                    continue; // 漂移状态下不受到范围伤害
                }
                
                // 每个敌人独立计算暴击
                const damageResult = this.calculateCriticalDamage(baseDamage);
                
                console.log(`[BulletHitEffect] 敌人受到范围伤害 - 距离: ${distance.toFixed(1)}, 伤害: ${damageResult.damage}, 暴击: ${damageResult.isCritical}`);
                
                // 直接处理伤害，避免重复计算暴击
                this.applyDamageToEnemy(enemy, damageResult.damage, damageResult.isCritical);
                totalDamage += damageResult.damage;
            }
        }
        
        return totalDamage;
    }
    
    /**
     * 直接对敌人应用伤害（不进行暴击计算）
     */
    private applyDamageToEnemy(enemyNode: Node, damage: number, isCritical: boolean = false) {
        console.log(`[BulletHitEffect] 通过EventBus发送伤害事件: ${damage}, 暴击: ${isCritical}, 敌人节点: ${enemyNode.name}`);
        
        if (!this.isEnemyNode(enemyNode)) {
            console.log(`[BulletHitEffect] 节点不是敌人，跳过伤害`);
            return;
        }
        // 检查是否可攻击（例如隐身状态不可攻击）
        const attackStateManager = EnemyAttackStateManager.getInstance();
        if (attackStateManager && !attackStateManager.isEnemyAttackable(enemyNode)) {
            console.log(`[BulletHitEffect] 敌人不可攻击（隐身/状态），跳过伤害: ${enemyNode.name}`);
            return;
        }
        
        // 通过EventBus发送伤害事件
        const eventBus = EventBus.getInstance();
        const damageData = {
            enemyNode: enemyNode,
            damage: damage,
            isCritical: isCritical,
            source: 'BulletHitEffect'
        };
        
        console.log(`[BulletHitEffect] 发送APPLY_DAMAGE_TO_ENEMY事件`, damageData);
        eventBus.emit(GameEvents.APPLY_DAMAGE_TO_ENEMY, damageData);
    }
    
    /**
     * 判断是否为敌人节点
     */
    private isEnemyNode(node: Node): boolean {
        if (!node || !node.isValid) {
            return false;
        }
        
        // 检查是否为EnemySprite子节点
        if (node.name === 'EnemySprite' && node.parent) {
            return node.parent.getComponent('EnemyInstance') !== null;
        }
        
        // 兼容旧的敌人检测逻辑
        const name = node.name.toLowerCase();
        return name.includes('enemy') || 
               name.includes('敌人');
    }
    
    /**
     * 获取武器的敌人检测范围
     */
    private getDetectionRange(weaponId: string): number {
        // 根据武器类型设置不同的检测范围
        const detectionRanges: { [key: string]: number } = {
            'saw_grass': 500,        // 锯齿草：500范围智能弹射
            'sharp_carrot': 300,     // 尖胡萝卜：较短范围
            'pea_shooter': 200,      // 毛豆射手：基础范围
            // 可以根据需要添加更多武器的检测范围
        };
        
        return detectionRanges[weaponId] || 300; // 默认300范围
    }
    
    /**
     * 寻找最近的敌人（在指定范围内）
     */
    /**
     * 锯齿草武器专用的敌人查找方法 - 基于CircleCollider2D检测并实时追踪
     */
    private findNearestEnemyForSawGrass(maxRange: number = 500): Node | null {        
        // 如果还没有首次击中敌人，不使用CircleCollider检测到的敌人
        if (!this.hasFirstHit) {
            console.log(`⏳ [锯齿草弹射] 尚未首次击中敌人，暂不启用CircleCollider追踪`);
            return null;
        }
        
        // 清理无效的敌人节点
        const invalidEnemies = new Set<Node>();
        for (const enemy of this.detectedEnemies) {
            if (!enemy || !enemy.isValid || !enemy.active) {
                invalidEnemies.add(enemy);
            }
        }
        
        // 移除无效敌人
        for (const invalidEnemy of invalidEnemies) {
            this.detectedEnemies.delete(invalidEnemy);
        }
        
        if (this.detectedEnemies.size === 0) {
            return null;
        }
        
        const currentPos = this.node.worldPosition;
        const attackStateManager = EnemyAttackStateManager.getInstance();
        let nearestEnemy: Node | null = null;
        let nearestDistance = Infinity;
        
        // 实时计算每个检测到敌人的当前位置，排除当前目标敌人
        for (const enemy of this.detectedEnemies) {
            if (enemy && enemy.isValid && enemy.active) {
                // 排除当前击中的目标敌人
                if (this.currentTargetEnemy && enemy === this.currentTargetEnemy) {
                    continue;
                }
                // 排除不可攻击或漂移中的敌人
                const enemyInstance = enemy.getComponent('EnemyInstance') as any;
                const isDrifting = enemyInstance && typeof enemyInstance.isDrifting === 'function' ? enemyInstance.isDrifting() : false;
                const isAttackable = attackStateManager ? attackStateManager.isEnemyAttackable(enemy) : true;
                if (!isAttackable || isDrifting) {
                    continue;
                }
                
                // 获取敌人的实时位置
                const enemyCurrentPos = enemy.worldPosition;
                const distance = Vec3.distance(currentPos, enemyCurrentPos);
                                
                // 检查是否在范围内且是最近的
                if (distance <= maxRange && distance < nearestDistance) {
                    nearestDistance = distance;
                    nearestEnemy = enemy;
                }
            }
        }
        
        if (nearestEnemy) {
        } else {
            console.log(`❌ [锯齿草弹射] 检测到的敌人都超出范围或无效，或都是当前目标敌人`);
        }
        
        return nearestEnemy;
    }
    
    /**
     * 通用的敌人查找方法 - 用于非锯齿草武器
     */
    private findNearestEnemy(maxRange: number = 500): Node | null {
        // 回退到原有的实时计算方法（用于非锯齿草武器）
        const enemyContainer = find('Canvas/GameLevelUI/enemyContainer');
        if (!enemyContainer) return null;

        const attackStateManager = EnemyAttackStateManager.getInstance();
        const enemies = enemyContainer.children.filter(child => {
            if (!child.active) return false;
            const nameLower = child.name.toLowerCase();
            if (nameLower.includes('enemy') || nameLower.includes('敌人')) return true;
            if (child.getComponent('EnemyInstance')) return true;
            return false;
        });

        if (enemies.length === 0) return null;

        let nearest: Node = null;
        let nearestDist = Infinity;
        const bulletPos = this.node.worldPosition;
        
        for (const enemy of enemies) {
            // 排除不可攻击或漂移中的敌人
            const enemyInstance = enemy.getComponent('EnemyInstance') as any;
            const isDrifting = enemyInstance && typeof enemyInstance.isDrifting === 'function' ? enemyInstance.isDrifting() : false;
            const isAttackable = attackStateManager ? attackStateManager.isEnemyAttackable(enemy) : true;
            if (!isAttackable || isDrifting) {
                continue;
            }
            const dist = Vec3.distance(bulletPos, enemy.worldPosition);
            // 只考虑在检测范围内的敌人
            if (dist <= maxRange && dist < nearestDist) {
                nearestDist = dist;
                nearest = enemy;
            }
        }
                
        return nearest;
    }
    
    /**
     * 生成爆炸特效
     */
    private spawnExplosionEffect(position: Vec3) {
        const path = this.defaultHitEffectPath || 'Animation/WeaponTx/tx0004/tx0004';
        this.spawnEffect(path, position, false);
    }
    
    /**
     * 生成灼烧特效
     */
    private spawnBurnEffect(parent: Node) {
        const path = this.defaultBurnEffectPath || this.defaultTrailEffectPath || 'Animation/WeaponTx/tx0006/tx0006';
        
        // 使用回调函数处理异步创建的特效节点
        this.spawnEffect(path, new Vec3(), true, parent, (effectNode) => {
            // 将特效节点传递给 BurnEffect 组件，以便在停止时清理
            const burnEffect = parent.getComponent(BurnEffect);
            if (burnEffect && effectNode) {
                burnEffect.setBurnEffectNode(effectNode);
            }
        });
    }
    
    /**
     * 生成地面燃烧特效
     */
    private spawnGroundBurnEffect(parent: Node) {
        const path = this.defaultBurnEffectPath || this.defaultTrailEffectPath || 'Animation/WeaponTx/tx0006/tx0006';
        
        // 使用回调函数处理异步创建的特效节点
        this.spawnEffect(path, new Vec3(), true, parent, (effectNode) => {
            // 将特效节点传递给 GroundBurnArea 组件，以便在停止时清理
            const groundBurnArea = parent.getComponent(GroundBurnArea);
            if (groundBurnArea && effectNode) {
                groundBurnArea.setBurnEffectNode(effectNode);
            }
        });
    }
    
    /**
     * 生成特效
     */
    private spawnEffect(path: string, worldPos: Vec3, loop = false, parent?: Node, onCreated?: (effectNode: Node) => void): void {
        if (!path) return;

        // 使用BundleLoader加载Animation Bundle中的特效资源
        // 转换路径格式，去除"Animation/"前缀
        const bundlePath = path.replace(/^Animation\//, '');
        const bundleLoader = BundleLoader.getInstance();
        
        // 使用loadSkeletonData加载骨骼动画资源，就像敌人动画那样
        BundleLoader.loadSkeletonData(bundlePath).then((skData) => {
            if (!skData) {
                console.warn('加载特效失败: 资源为空', path);
                return;
            }
            
            // 创建特效节点
            const effectNode = new Node('Effect');
            const skeletonComp: sp.Skeleton = effectNode.addComponent(sp.Skeleton);
            skeletonComp.skeletonData = skData;
            skeletonComp.setAnimation(0, 'animation', loop);

            // 设置父节点和位置
            const targetParent = parent || find('Canvas/GameLevelUI/enemyContainer') || find('Canvas');
            if (targetParent) {
                targetParent.addChild(effectNode);
                if (parent) {
                    effectNode.setPosition(0, 0, 0);
                } else {
                    const parentTrans = targetParent.getComponent(UITransform);
                    if (parentTrans) {
                        const localPos = parentTrans.convertToNodeSpaceAR(worldPos);
                        effectNode.position = localPos;
                    }
                }
            }

            // 非循环动画播放完毕后销毁节点
            if (!loop) {
                skeletonComp.setCompleteListener(() => {
                    if (effectNode && effectNode.isValid) {
                        effectNode.destroy();
                    }
                });
            }
            
            // 调用回调函数，传递创建的特效节点
            if (onCreated) {
                onCreated(effectNode);
            }
        }).catch((err) => {
            console.warn('加载特效失败:', path, err);
        });
    }
    
    /**
     * 清理资源
     */
    onDestroy() {
        // 不再强制销毁燃烧区域，让它们按照自己的持续时间自然销毁
        // 燃烧区域现在由GroundBurnAreaManager统一管理，有自己的生命周期        
        // 只清空引用，不销毁燃烧区域节点
        this.activeBurnAreas = [];
        
        // 清理检测碰撞器事件监听
        if (this.detectionCollider) {
            this.detectionCollider.off(Contact2DType.BEGIN_CONTACT, this.onDetectionEnter, this);
            this.detectionCollider.off(Contact2DType.END_CONTACT, this.onDetectionExit, this);
            this.detectionCollider = null;
        }
        
        // 清理检测到的敌人集合
        this.detectedEnemies.clear();
        
        // 重置锯齿草状态
        this.resetSawGrassState();
    }
    
    /**
     * 设置检测范围碰撞器事件监听（用于手动添加的CircleCollider2D）
     */
    private setupDetectionColliderEvents() {
        // 首先在当前节点查找CircleCollider2D组件
        let colliders = this.getComponents(CircleCollider2D);
        
        // 如果当前节点没有找到，则在子节点中递归查找
        if (colliders.length === 0) {
            colliders = this.getComponentsInChildren(CircleCollider2D);
        }
        
        // 找到用作检测范围的CircleCollider2D（通常是sensor模式的）
        for (const collider of colliders) {
            if (collider.sensor) { // 只要是sensor模式的CircleCollider2D就认为是检测范围碰撞器
                this.detectionCollider = collider;
                
                // 启用碰撞监听 - Cocos Creator 3.8.6正确的事件类型
                this.detectionCollider.on(Contact2DType.BEGIN_CONTACT, this.onDetectionEnter, this);
                this.detectionCollider.on(Contact2DType.END_CONTACT, this.onDetectionExit, this);
                break;
            }
        }
        
        if (!this.detectionCollider) {
            console.log(`[BulletHitEffect] 未找到检测范围碰撞器，将使用实时计算方式`);
        }
    }
    
    /**
     * 检测范围进入事件
     */
    private onDetectionEnter(selfCollider: Collider2D, otherCollider: Collider2D, contact: IPhysics2DContact | null) {
        const otherNode = otherCollider.node;

        if (this.isEnemyNode(otherNode)) {
            // 仅在可攻击状态下追踪敌人
            const attackStateManager = EnemyAttackStateManager.getInstance();
            if (attackStateManager && !attackStateManager.isEnemyAttackable(otherNode)) {
                return;
            }
            // 获取武器信息，确认是否为锯齿草武器
            const weaponBullet = this.getComponent(WeaponBullet);
            const weaponInfo = weaponBullet ? weaponBullet.getWeaponInfo() : null;
            const weaponId = weaponInfo ? weaponInfo.getWeaponId() : null;
            
            // 对于锯齿草武器，记录所有检测到的敌人，但在弹射时会根据hasFirstHit状态进行过滤
            this.detectedEnemies.add(otherNode);
            
            if (weaponId === 'saw_grass') {
                const hitStatus = this.hasFirstHit ? '已首次击中' : '尚未首次击中';
            }
        }
    }
    
    /**
     * 检测范围退出事件
     */
    private onDetectionExit(selfCollider: Collider2D, otherCollider: Collider2D, contact: IPhysics2DContact | null) {
        const otherNode = otherCollider.node;
        if (this.isEnemyNode(otherNode)) {
            this.detectedEnemies.delete(otherNode);
            
            // 获取武器信息，确认是否为锯齿草武器
            const weaponBullet = this.getComponent(WeaponBullet);
            const weaponInfo = weaponBullet ? weaponBullet.getWeaponInfo() : null;
            const weaponId = weaponInfo ? weaponInfo.getWeaponId() : null;
            
            if (weaponId === 'saw_grass') {
                console.log(`🌿 [锯齿草检测] 锯齿草武器敌人离开: ${otherNode.name}`);
            }
        }
    }
    
    /**
     * 获取命中统计
     */
    public getHitStats() {
        return {
            hitCount: this.hitCount,
            pierceCount: this.pierceCount,
            ricochetCount: this.ricochetCount
        };
    }
    
    /**
     * 验证配置
     */
    public static validateConfig(effects: HitEffectConfig[]): boolean {
        if (!Array.isArray(effects) || effects.length === 0) return false;
        
        for (const effect of effects) {
            if (!effect.type || effect.priority < 0) return false;
            if (!effect.params) return false;
        }
        
        return true;
    }
    
    private spawnHitEffect(worldPos: Vec3) {
        const path = this.defaultHitEffectPath;
        if (path) {
            this.spawnEffect(path, worldPos, false);
        }
    }
    
    /**
     * 重置锯齿草状态
     */
    private resetSawGrassState() {
        this.hasFirstHit = false;
        this.currentTargetEnemy = null;
    }

}