tanqiu/assets/scripts/CombatSystem/WeaponBullet.ts

import { _decorator, Component, Node, Vec2, Vec3, RigidBody2D, Collider2D, Contact2DType, IPhysics2DContact, find, Prefab, instantiate, UITransform, resources, sp, JsonAsset, Sprite, SpriteFrame, math } from 'cc';
import { JsonConfigLoader } from '../Core/JsonConfigLoader';
import { BundleLoader } from '../Core/BundleLoader';
import { BulletCount, BulletSpawnInfo } from './BulletEffects/BulletCount';
import { BulletTrajectory } from './BulletEffects/BulletTrajectory';
import { BulletHitEffect, HitResult } from './BulletEffects/BulletHitEffect';
import { BulletLifecycle } from './BulletEffects/BulletLifecycle';
import { BulletTrailController } from './BulletTrailController';
import { ConfigManager, WeaponConfig, BulletCountConfig, BulletTrajectoryConfig, HitEffectConfig, BulletLifecycleConfig } from '../Core/ConfigManager';
import  EventBus,{ GameEvents } from '../Core/EventBus';
import { PersistentSkillManager } from '../FourUI/SkillSystem/PersistentSkillManager';
import { SkillManager } from './SkillSelection/SkillManager';
import { SaveDataManager } from '../LevelSystem/SaveDataManager';
import { WeaponInfo } from './BlockSelection/WeaponInfo';
import { BlockInfo } from './BlockSelection/BlockInfo';

const { ccclass, property } = _decorator;

/**
 * WeaponBullet - 重构后的统一子弹控制器
 * 
 * 整合四个子模块：
 * 1. BulletCount - 子弹数量控制
 * 2. BulletTrajectory - 弹道控制
 * 3. BulletHitEffect - 命中效果（可叠加）
 * 4. BulletLifecycle - 生命周期控制
 * 
 * 从weapons.json读取配置并分发给各模块
 */

export interface BulletInitData {
    weaponId: string;           // 武器ID，用于查找配置
    firePosition: Vec3;         // 发射位置
    direction?: Vec3;           // 发射方向（可选）
    autoTarget?: boolean;       // 是否自动瞄准
    weaponConfig?: WeaponConfig; // 直接传入的武器配置（优先级更高）
    weaponInfo?: WeaponInfo;    // WeaponInfo组件实例（用于冷却管理等）
    blockInfo?: BlockInfo;      // BlockInfo组件实例（用于获取稀有度等级）
}

@ccclass('WeaponBullet')
export class WeaponBullet extends Component {
    /* ========= 全局开关：是否允许生成子弹 ========= */
    private static shootingEnabled: boolean = true;
    public static setShootingEnabled(enable: boolean) {
        WeaponBullet.shootingEnabled = enable;
    }

    // 子弹组件
    private bulletTrajectory: BulletTrajectory = null;
    private bulletHitEffect: BulletHitEffect = null;
    private bulletLifecycle: BulletLifecycle = null;
    private bulletTrailController: BulletTrailController = null;
    
    // 武器配置和状态
    private weaponConfig: WeaponConfig = null;
    private weaponId: string = null; // 存储武器ID用于获取升级数据
    private weaponInfo: WeaponInfo = null; // WeaponInfo组件实例
    private blockInfo: BlockInfo = null; // BlockInfo组件实例
    private isInitialized: boolean = false;
    
    // === 静态武器配置缓存 ===
    private static weaponsData: any = null;
    
    // === 自动旋转相关 ===
    private readonly _rotationSpeedDeg: number = 720; // 每秒旋转 720° (度)
    private readonly _rotationSpeedRad: number = 720 * Math.PI / 180; // 转换为弧度，用于物理角速度
    
    /**
     * 加载武器配置数据
     */
    public static async loadWeaponsData(): Promise<void> {
        if (WeaponBullet.weaponsData) {
            return;
        }
        
        try {
            const jsonConfigLoader = JsonConfigLoader.getInstance();
            const weaponData = await jsonConfigLoader.loadConfig('weapons');
            
            if (!weaponData) {
                throw new Error('武器配置文件内容为空');
            }
            
            WeaponBullet.weaponsData = weaponData;
        } catch (error) {
            console.error('[WeaponBullet] 武器配置文件加载失败:', error);
            throw error;
        }
    }
    
    /**
     * 根据武器ID获取配置
     */
    public static getWeaponConfig(weaponId: string): WeaponConfig | null {
        if (!WeaponBullet.weaponsData) {
            return null;
        }
        
        const weapons = WeaponBullet.weaponsData.weapons;
        const weapon = weapons.find((w: any) => w.id === weaponId);
        
        if (!weapon) {
            return null;
        }
        
        return weapon as WeaponConfig;
    }
    
    /**
     * 创建多发子弹
     */
    public static createBullets(initData: BulletInitData, bulletPrefab: Node): Node[] {
        // 关卡备战或其他情况下可关闭生成
        if (!WeaponBullet.shootingEnabled) return [];

        // 触发子弹创建请求事件
        const eventBus = EventBus.getInstance();
        eventBus.emit(GameEvents.BULLET_CREATE_REQUEST, { weaponId: initData.weaponId, position: initData.firePosition });

        // 通过事件系统检查是否可以发射子弹
        let canFire = true;
        eventBus.emit(GameEvents.BALL_FIRE_BULLET, { canFire: (result: boolean) => { canFire = result; } });
        
        if (!canFire) {
            return [];
        }

        // 获取武器配置
        const originalConfig = initData.weaponConfig || WeaponBullet.getWeaponConfig(initData.weaponId);
        if (!originalConfig) {
            return [];
        }
        
        // === 应用多重射击技能 ===
        const config = BulletCount.applyMultiShotSkill(originalConfig);
        
        // === 计算基础发射方向 ===
        let direction: Vec3;
        if (initData.direction) {
            direction = initData.direction.clone();
        } else if (initData.autoTarget) {
            // 通过事件系统获取最近敌人
            let nearestEnemy: Node = null;
            eventBus.emit(GameEvents.ENEMY_GET_NEAREST, { 
                position: initData.firePosition,
                callback: (enemy: Node) => { nearestEnemy = enemy; }
            });
            
            if (nearestEnemy) {
                direction = nearestEnemy.worldPosition.clone().subtract(initData.firePosition).normalize();
            }

            // 如果没有敌人或计算失败，则回退为随机方向
            if (!direction) {
                const angleRand = Math.random() * Math.PI * 2;
                direction = new Vec3(Math.cos(angleRand), Math.sin(angleRand), 0);
            }
        } else {
            direction = new Vec3(1, 0, 0);
        }
        
        const spawnInfos = BulletCount.calculateBulletSpawns(
            config.bulletConfig.count,
            initData.firePosition,
            direction
        );
        
        const bullets: Node[] = [];
        
        // 为每个子弹创建实例
        for (const spawnInfo of spawnInfos) {
            const createBullet = () => {
                try {
                    const bullet = instantiate(bulletPrefab);
                    
                    const weaponBullet = bullet.getComponent(WeaponBullet) || bullet.addComponent(WeaponBullet);
                    
                    // 初始化子弹
                    weaponBullet.init({
                        ...initData,
                        firePosition: spawnInfo.position,
                        direction: spawnInfo.direction,
                        weaponConfig: config
                    });
                    
                    return bullet;
                } catch (error) {
                    console.error(`[WeaponBullet] 子弹创建失败:`, error);
                    return null;
                }
            };
            
            // 处理延迟发射 - 对于burst模式，所有子弹都应该被创建并返回
            if (spawnInfo.delay > 0) {
                // 延迟发射：先创建子弹，然后延迟激活
                const bullet = createBullet();
                if (bullet) {
                    // 先禁用子弹，延迟后再激活
                    bullet.active = false;
                    bullets.push(bullet);
                    setTimeout(() => {
                        if (bullet && bullet.isValid) {
                            bullet.active = true;
                            //console.log(`[WeaponBullet] 延迟子弹激活 - 延迟: ${spawnInfo.delay}ms`);
                        }
                    }, spawnInfo.delay);
                }
            } else {
                const bullet = createBullet();
                if (bullet) {
                    bullets.push(bullet);
                }
            }
        }
        
        return bullets;
    }
    
    /**
     * 初始化子弹
     */
    public init(initData: BulletInitData) {        
        // 通过事件系统检查游戏是否暂停，暂停时不初始化子弹
        let bulletFireEnabled = true;
        EventBus.getInstance().emit(GameEvents.BALL_FIRE_BULLET, { canFire: (result: boolean) => { bulletFireEnabled = result; } });
        
        if (!bulletFireEnabled) {
            // 立即销毁自己
            this.node.destroy();
            return;
        }

        // 验证初始化数据
        if (!WeaponBullet.validateInitData(initData)) {
            console.error('WeaponBullet.init: 初始化数据无效');
            this.node.destroy();
            return;
        }
        
        // 存储武器ID、WeaponInfo和BlockInfo
        this.weaponId = initData.weaponId;
        this.weaponInfo = initData.weaponInfo || null;
        this.blockInfo = initData.blockInfo || null;
        
        // 获取武器配置
        this.weaponConfig = initData.weaponConfig || WeaponBullet.getWeaponConfig(initData.weaponId);
        if (!this.weaponConfig) {
            console.error(`WeaponBullet.init: 无法找到武器配置 ${initData.weaponId}`);
            this.node.destroy();
            return;
        }
        
        // 应用技能加成计算运行时数值
        this.calculateRuntimeStats();
        
        // 使用世界坐标设置位置
        this.setPositionInGameArea(initData.firePosition);
        
        // 初始化各个组件
        this.initializeComponents(initData);
        
        // 设置子弹外观
        this.setupBulletSprite();        
        // 设置子弹效果节点激活状态
        this.setupBulletEffectNodes();
        
        // 设置碰撞监听
        this.setupCollisionListener();
        
        this.isInitialized = true;
    }
    
    /**
     * 在GameArea中设置位置
     */
    private setPositionInGameArea(worldPos: Vec3) {
        const gameArea = find('Canvas/GameLevelUI/GameArea');
        if (gameArea) {
            const gameAreaTransform = gameArea.getComponent(UITransform);
            if (gameAreaTransform) {
                const localPos = gameAreaTransform.convertToNodeSpaceAR(worldPos);
                this.node.position = localPos;
            }
        }
    }
    
    /**
     * 初始化各个组件
     */
    private initializeComponents(initData: BulletInitData) {
        const config = this.weaponConfig.bulletConfig;
        
        // 确保物理组件存在
        this.setupPhysics();
        
        // 初始化弹道组件
        this.bulletTrajectory = this.getComponent(BulletTrajectory) || this.addComponent(BulletTrajectory);
        const trajCfg: BulletTrajectoryConfig = { ...config.trajectory, speed: this.weaponConfig.stats.bulletSpeed };
        
        // 计算方向
        const direction = initData.direction || this.calculateDirection(initData.autoTarget);
        
        // === 根据发射方向调整容器朝向（仅首次，后续不再旋转） ===
        if (direction) {
            // 角度 = atan2(y,x)，转成度数
            const deg = math.toDegree(Math.atan2(direction.y, direction.x));
            this.node.angle = deg;
        }
        
        // 根据配置决定旋转行为
        if (config.shouldRotate !== false) { 
            // 默认为true，启用持续自旋转
            this.applyAutoRotation();
        } else {
            // shouldRotate为false时，让Pellet子节点根据发射方向旋转
            const pelletNode = this.node.getChildByName('Pellet');
            if (pelletNode && direction) {
                const deg = math.toDegree(Math.atan2(direction.y, direction.x));
                pelletNode.angle = deg;
            }
        }
        
        this.bulletTrajectory.init(
            trajCfg,
            direction,
            initData.firePosition
        );
        
        // --- 额外偏移 ---
        // 若子弹在生成时与发射方块碰撞(位置重叠), 会立刻触发碰撞事件导致被销毁。
        // 因此在初始化完弹道后, 将子弹沿发射方向平移一小段距离(默认 30 像素左右)。
        const dir = direction.clone().normalize();
        const spawnOffset = 30; // 可根据子弹半径或方块大小调整
        if (!Number.isNaN(dir.x) && !Number.isNaN(dir.y)) {
            const newLocalPos = this.node.position.clone().add(new Vec3(dir.x * spawnOffset, dir.y * spawnOffset, 0));
            this.node.setPosition(newLocalPos);
        }
        
        // 初始化命中效果组件
        this.bulletHitEffect = this.getComponent(BulletHitEffect) || this.addComponent(BulletHitEffect);
        this.bulletHitEffect.init(config.hitEffects);
        
        // 传递默认特效路径
        if (this.bulletHitEffect && config.visual) {
            (this.bulletHitEffect as any).setDefaultEffects?.(config.visual.hitEffect, config.visual.trailEffect, (config.visual as any).burnEffect);
        }
        
        // 初始化生命周期组件
        this.bulletLifecycle = this.getComponent(BulletLifecycle) || this.addComponent(BulletLifecycle);
        
        // 为回旋镖类型的武器设置maxRange，如果配置中没有设置的话
        const lifecycleConfig = { ...config.lifecycle };
        if (lifecycleConfig.type === 'return_trip' && !lifecycleConfig.maxRange && this.weaponConfig.stats.range) {
            lifecycleConfig.maxRange = this.weaponConfig.stats.range;
        }
        
        this.bulletLifecycle.init(lifecycleConfig, initData.firePosition);
        
        // 设置碰撞监听
        this.setupCollisionListener();
        
        this.isInitialized = true;
    }
    
    /**
     * 设置物理组件
     */
    private setupPhysics() {
        const rigidBody = this.getComponent(RigidBody2D);
        if (rigidBody) {
            rigidBody.enabledContactListener = true;
            rigidBody.gravityScale = 0; // 由弹道组件控制重力
            rigidBody.linearDamping = 0;
            rigidBody.angularDamping = 0;
            rigidBody.allowSleep = false;
            
            // 如果节点包含子节点 'Pellet'，表示这是带容器的子弹；锁定容器旋转
            if (this.node.getChildByName('Pellet')) {
                rigidBody.fixedRotation = true;
            }
        }
        
        const collider = this.getComponent(Collider2D);
        if (collider) {
            collider.sensor = false;
            collider.on(Contact2DType.BEGIN_CONTACT, this.onHit, this);
        }
    }
    
    /**
     * 计算子弹方向
     */
    private calculateDirection(autoTarget: boolean = false): Vec3 {
        if (!autoTarget) {
            // 随机方向
            const angle = Math.random() * Math.PI * 2;
            return new Vec3(Math.cos(angle), Math.sin(angle), 0);
        }
        
        // 寻找最近敌人（使用静态工具函数）
        const nearestEnemy = WeaponBullet.findNearestEnemyGlobal(this.node.worldPosition);
        if (nearestEnemy) {
            const direction = nearestEnemy.worldPosition.clone()
                .subtract(this.node.worldPosition)
                .normalize();
            return direction;
        }
        
        // 若没有敌人则随机方向发射
        const angle = Math.random() * Math.PI * 2;
        return new Vec3(Math.cos(angle), Math.sin(angle), 0);
    }
    
    /**
     * 设置碰撞监听
     */
    private setupCollisionListener() {
        // 碰撞监听已在setupPhysics中设置
    }
    
    /**
     * 碰撞处理
     */
    private onHit(selfCollider: Collider2D, otherCollider: Collider2D, contact: IPhysics2DContact | null) {
        if (!this.isInitialized) return;
        
        const otherNode = otherCollider.node;
        // Ignore collisions with other bullets (prevent friendly-fire between shotgun pellets)
        if (otherNode.getComponent(WeaponBullet)) {
            return; // Skip further processing if the collider is another bullet
        }
        
        // 检查是否命中敌人并触发事件
        let enemyRootNode: Node = null;
        
        // 检查是否碰撞到EnemySprite子节点
        if (otherNode.name === 'EnemySprite' && otherNode.parent) {
            // 如果碰撞到EnemySprite，获取其父节点（敌人根节点）
            const parentNode = otherNode.parent;
            if (parentNode.getComponent('EnemyInstance')) {
                enemyRootNode = parentNode;
            }
        }
        // 兼容旧的敌人检测逻辑（直接碰撞到敌人根节点）
        else if (otherNode.name.toLowerCase().includes('enemy') || 
                 otherNode.name.toLowerCase().includes('敌人') || 
                 otherNode.getComponent('EnemyInstance')) {
            enemyRootNode = otherNode;
        }
        
        if (enemyRootNode) {
            // 检查敌人是否处于漂移状态，如果是则不触发攻击
            const enemyInstance = enemyRootNode.getComponent('EnemyInstance') as any;
            if (enemyInstance && enemyInstance.isDrifting()) {
                console.log(`[WeaponBullet] 敌人 ${enemyRootNode.name} 正在漂移中，跳过子弹攻击`);
                return; // 漂移状态下不受到子弹攻击
            }
            
            // 计算是否暴击
            const isCritical = Math.random() < this.getCritChance();
            const finalDamage = isCritical ? this.getFinalCritDamage() : this.getFinalDamage();
            
            // 触发子弹命中敌人事件
            EventBus.getInstance().emit(GameEvents.BULLET_HIT_ENEMY, {
                enemyNode: enemyRootNode,
                damage: finalDamage,
                isCritical: isCritical,
                source: `WeaponBullet-${this.weaponConfig?.id || 'unknown'}`
            });
        }
        
        // 获取碰撞世界坐标
        let contactWorldPos: Vec3 = null;
        if (contact && (contact as any).getWorldManifold) {
            const wm = (contact as any).getWorldManifold();
            if (wm && wm.points && wm.points.length > 0) {
                contactWorldPos = new Vec3(wm.points[0].x, wm.points[0].y, 0);
            }
        }
        if (!contactWorldPos) {
            contactWorldPos = otherNode.worldPosition.clone();
        }
        
        // 处理命中效果
        const hitResult: HitResult = this.bulletHitEffect.processHit(otherNode, contactWorldPos);
        
        // 通知生命周期组件发生命中（可能影响内部计数或阶段）
        if (this.bulletLifecycle) {
            this.bulletLifecycle.onHit(otherNode);
        }
        // 不直接销毁，交由 BulletLifecycle 自行处理
        // 生命周期和命中效果自行决定是否销毁；此处不再直接销毁，由 BulletLifecycle.update() 完成
        if (hitResult.shouldRicochet) {
            // 执行弹射逻辑：BulletHitEffect已经在processHit中处理了弹射方向改变
            // 这里不需要额外操作，弹射方向已经通过calculateRicochetDirection更新
        } else if (hitResult.shouldContinue) {
            // 这里需要实现子弹继续飞行的逻辑
        }
    }
    
    /**
     * 为子弹设置持续旋转（通过刚体角速度，避免被物理系统覆盖）
     */
    private applyAutoRotation() {
        // 若存在子节点 Pellet，则只旋转 Pellet，容器保持角度不变
        const pelletNode = this.node.getChildByName('Pellet');
        if (pelletNode) {
            this.schedule((dt: number) => {
                pelletNode.angle += this._rotationSpeedDeg * dt;
            }, 0);
            return;
        }

        const rigidBody = this.getComponent(RigidBody2D);
        if (rigidBody) {
            rigidBody.angularVelocity = this._rotationSpeedRad; // 弧度/秒
            rigidBody.angularDamping = 0; // 无角阻尼，保持恒定旋转
        } else {
            // 如果没有刚体，退化为在 update 中手动旋转
            this.schedule((dt: number) => {
                this.node.angle += this._rotationSpeedDeg * dt;
            }, 0);
        }
    }
    
    /**
     * 获取武器配置
     */
    public getWeaponConfig(): WeaponConfig {
        return this.weaponConfig;
    }
    
    /**
     * 获取WeaponInfo组件实例
     */
    public getWeaponInfo(): WeaponInfo | null {
        return this.weaponInfo;
    }
    
    /**
     * 获取子弹状态信息
     */
    public getBulletStatus() {
        return {
            isInitialized: this.isInitialized,
            weaponName: this.weaponConfig?.name,
            trajectoryState: this.bulletTrajectory?.getState(),
            lifecycleState: this.bulletLifecycle?.getState(),
            hitStats: this.bulletHitEffect?.getHitStats()
        };
    }
    
    /**
     * 强制销毁子弹
     */
    public forceDestroy() {
        if (this.bulletLifecycle) {
            this.bulletLifecycle.forceDestroy();
        }
    }
    
    /**
     * 清理所有活跃的子弹 - 游戏重置时使用
     */
    public static clearAllBullets() {
        console.log('[WeaponBullet] 开始清理所有活跃子弹');
        
        // 查找GameArea节点，子弹都添加在这里
        const gameArea = find('Canvas/GameLevelUI/GameArea');
        if (!gameArea) {
            console.log('[WeaponBullet] 未找到GameArea节点');
            return;
        }
        
        let bulletCount = 0;
        const bulletsToDestroy: Node[] = [];
        
        // 遍历GameArea的所有子节点，查找WeaponBullet组件
        for (const child of gameArea.children) {
            if (child && child.isValid) {
                const weaponBullet = child.getComponent(WeaponBullet);
                if (weaponBullet) {
                    bulletsToDestroy.push(child);
                    bulletCount++;
                }
            }
        }
        
        // 销毁所有找到的子弹
        for (const bullet of bulletsToDestroy) {
            if (bullet && bullet.isValid) {
                bullet.destroy();
            }
        }
        
        console.log(`[WeaponBullet] 清理完成，共销毁 ${bulletCount} 个子弹`);
    }
    
    /**
     * 验证初始化数据
     */
    public static validateInitData(initData: BulletInitData): boolean {
        if (!initData) return false;
        if (!initData.weaponId && !initData.weaponConfig) return false;
        if (!initData.firePosition) return false;
        
        return true;
    }
    
    onDestroy() {
        // 清理事件监听
        const collider = this.getComponent(Collider2D);
        if (collider) {
            collider.off(Contact2DType.BEGIN_CONTACT, this.onHit, this);
        }
        
        // 清理拖尾控制器
        if (this.bulletTrailController) {
            this.bulletTrailController.resetTrail();
            this.bulletTrailController = null;
        }
    }
    
    /**
     * 设置子弹的SpriteFrame，使其与方块武器 (WeaponBlock/B1/Weapon) 节点上的SpriteFrame 一致
     */
    private setupBulletSprite() {
        // 先尝试获取当前节点上的 Sprite 组件，若不存在则在子节点中查找
        const sprite: Sprite | null = this.getComponent(Sprite) || this.node.getComponentInChildren(Sprite);
        if (!sprite) {
            console.log("未找到Sprite组件");
            // 子弹预制体可能没有Sprite组件，直接返回
            return;
        }

        // 使用武器配置中的bulletConfig.visual.bulletImages字段获取子弹图像路径
        const bulletImagePath = this.weaponConfig?.bulletConfig?.visual?.bulletImages;
        if (!bulletImagePath) {
            console.log("未找到子弹图像配置 (bulletConfig.visual.bulletImages)");
            return;
        }

        // 转换路径格式，去除"images/"前缀
        const bundlePath = bulletImagePath.replace(/^images\//, '');
        const framePath = `${bundlePath}/spriteFrame`;
        
        // 使用BundleLoader从images Bundle加载SpriteFrame
        const bundleLoader = BundleLoader.getInstance();
        bundleLoader.loadSpriteFrame(framePath).then((spriteFrame) => {
            console.log("设置子弹外观");
            // Add comprehensive null safety checks before setting spriteFrame
            if (sprite && sprite.isValid && 
                this.node && this.node.isValid && 
                spriteFrame && spriteFrame.isValid) {
                sprite.spriteFrame = spriteFrame;
                console.log("设置子弹SpriteFrame成功");
                // === 子弹大小控制：保持prefab预设的大小 ===
                sprite.node.setScale(sprite.node.scale.x * 0.45, sprite.node.scale.y * 0.45, sprite.node.scale.z);
            }
        }).catch((err) => {
            console.error(`加载子弹SpriteFrame失败: ${err}`);
        });
    }
    
    /**
     * 设置子弹效果节点激活状态
     */
    private setupBulletEffectNodes() {
        // 尖胡萝卜特殊处理：使用Spine动画而不是拖尾效果
        const isSharpCarrot = this.weaponId === 'sharp_carrot';
        
        // 查找Spine节点
        const spineNode = this.node.getChildByName('Spine');
        if (spineNode) {
            spineNode.active = isSharpCarrot;
        }
        
        // 查找TrailEffect节点
        const trailEffectNode = this.node.getChildByName('TrailEffect');
        if (trailEffectNode) {
            trailEffectNode.active = !isSharpCarrot;
            
            // 为拖尾效果设置白色颜色
            if (!isSharpCarrot) {
                const trailController = trailEffectNode.getComponent(BulletTrailController);
                if (trailController) {
                    trailController.setTrailColor('white');
                }
            }
        }
    }
    
    /**
     * 静态：根据给定世界坐标，寻找最近的敌人节点
     */
    private static findNearestEnemyGlobal(worldPos: Vec3): Node | null {
        const enemyContainer = find('Canvas/GameLevelUI/enemyContainer');
        if (!enemyContainer) return null;

        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;
        for (const enemy of enemies) {
            const dist = Vec3.distance(worldPos, enemy.worldPosition);
            if (dist < nearestDist) {
                nearestDist = dist;
                nearest = enemy;
            }
        }
        return nearest;
    }
    
    /**
     * 计算运行时数值（应用武器升级和技能加成）
     */
    private calculateRuntimeStats() {
        // 获取基础伤害
        let baseDamage = this.weaponConfig.stats.damage;
        
        // 应用武器升级加成 - 使用UpgradeController的伤害计算逻辑
        const saveDataManager = SaveDataManager.getInstance();
        if (saveDataManager && this.weaponId) {
            const weaponData = saveDataManager.getWeapon(this.weaponId);
            if (weaponData && weaponData.level > 0) {
                // 优先从武器配置的upgradeConfig中获取伤害值
                if (this.weaponConfig.upgradeConfig && this.weaponConfig.upgradeConfig.levels) {
                    const levelConfig = this.weaponConfig.upgradeConfig.levels[weaponData.level.toString()];
                    if (levelConfig && typeof levelConfig.damage === 'number') {
                        baseDamage = levelConfig.damage;
                        console.log(`[WeaponBullet] 从upgradeConfig获取伤害 - 武器ID: ${this.weaponId}, 等级: ${weaponData.level}, 伤害: ${baseDamage}`);
                    } else {
                        // 如果upgradeConfig中没有伤害值，使用基础伤害 + 等级加成作为后备
                        baseDamage = this.weaponConfig.stats.damage + (weaponData.level - 1);
                        console.log(`[WeaponBullet] 使用基础伤害计算 - 武器ID: ${this.weaponId}, 等级: ${weaponData.level}, 基础伤害: ${this.weaponConfig.stats.damage}, 升级后伤害: ${baseDamage}`);
                    }
                } else {
                    // 如果没有upgradeConfig，使用默认公式
                    baseDamage = this.weaponConfig.stats.damage + (weaponData.level - 1);
                    console.log(`[WeaponBullet] 无upgradeConfig，使用默认公式 - 武器ID: ${this.weaponId}, 等级: ${weaponData.level}, 升级后伤害: ${baseDamage}`);
                }
            }
        }
        // 应用稀有度伤害倍数（合成升级效果）
        // 优先从BlockInfo中获取稀有度等级，如果不存在则从武器配置中获取
        let rarityLevel = 0; // 默认为common(0)
        let rarityName = 'common';
        
        if (this.blockInfo) {
            rarityLevel = this.blockInfo.rarity;
            rarityName = this.blockInfo.getRarityName();
        } else if (this.weaponConfig && this.weaponConfig.rarity) {
            // 兼容旧的JSON配置方式
            rarityName = this.weaponConfig.rarity;
        }
        
        const rarityMultiplier = this.getRarityDamageMultiplierByLevel(rarityLevel);
        if (rarityMultiplier > 1) {
            baseDamage = baseDamage * rarityMultiplier;
            console.log(`[WeaponBullet] 稀有度伤害倍数应用 - 稀有度等级: ${rarityLevel}(${rarityName}), 倍数: ${rarityMultiplier}, 最终基础伤害: ${baseDamage}`);
        }
        
        const skillManager = PersistentSkillManager.getInstance();
        if (!skillManager) {
            // 如果没有技能管理器，使用升级后的基础数值
            this.weaponConfig.runtimeStats = {
                finalDamage: baseDamage,
                finalCritDamage: baseDamage,
                critChance: 0 // 基础暴击率0%
            };
            console.log(`[WeaponBullet] 无技能管理器 - 最终伤害: ${baseDamage}`);
            return;
        }
        
        // 应用技能伤害加成（基于升级后的伤害）
        const finalDamage = skillManager.applyDamageBonus(baseDamage);
        
        // 暴击伤害应该基于最终伤害计算，而不是基础伤害
        // 首先计算暴击倍数（默认2倍），然后应用技能暴击伤害加成
        const baseCritDamage = finalDamage * 2; // 基础暴击倍数2倍
        const finalCritDamage = skillManager.applyCritDamageBonus(baseCritDamage);
        
        // 应用局内技能暴击率加成
        const baseCritChance = 0; // 基础暴击率0%
        let critChance = baseCritChance;
        
        // 应用局内技能加成（SkillManager）
        const inGameSkillManager = SkillManager.getInstance();
        if (inGameSkillManager) {
            const critSkillLevel = inGameSkillManager.getSkillLevel('crit_chance');
            if (critSkillLevel > 0) {
                critChance = SkillManager.calculateCritChance(critChance, critSkillLevel);
            }
        }
        
        this.weaponConfig.runtimeStats = {
            finalDamage,
            finalCritDamage,
            critChance
        };
        
        // 输出详细的暴击率计算信息
        const inGameCritLevel = inGameSkillManager ? inGameSkillManager.getSkillLevel('crit_chance') : 0;
        const inGameCritBonus = inGameSkillManager && inGameCritLevel > 0 ? 
            ((SkillManager.calculateCritChance(baseCritChance, inGameCritLevel) - baseCritChance) * 100).toFixed(1) : '0.0';
        
        console.log(`[WeaponBullet] 完整伤害计算完成 - 武器ID: ${this.weaponId}, 原始伤害: ${this.weaponConfig.stats.damage}, 稀有度: ${rarityName}, 计算后基础伤害: ${baseDamage}, 最终伤害: ${finalDamage}, 暴击伤害: ${finalCritDamage}`);
        console.log(`[WeaponBullet] 暴击率详情 - 基础: ${(baseCritChance * 100).toFixed(1)}%, 局内技能等级: ${inGameCritLevel}, 局内技能加成: +${inGameCritBonus}%, 最终暴击率: ${(critChance * 100).toFixed(1)}%`);
    }
    
    /**
     * 获取最终伤害值（应用技能加成后）
     */
    public getFinalDamage(): number {
        return this.weaponConfig?.runtimeStats?.finalDamage || this.weaponConfig?.stats?.damage || 0;
    }
    
    /**
     * 获取最终暴击伤害值（应用技能加成后）
     */
    public getFinalCritDamage(): number {
        return this.weaponConfig?.runtimeStats?.finalCritDamage || this.weaponConfig?.stats?.damage || 0;
    }
    
    /**
     * 获取暴击率
     */
    public getCritChance(): number {
        return this.weaponConfig?.runtimeStats?.critChance || 0;
    }
    


    /**
     * 根据稀有度等级获取伤害倍数
     * @param rarityLevel 稀有度等级 (0: common, 1: uncommon, 2: rare, 3: epic)
     * @returns 伤害倍数
     */
    private getRarityDamageMultiplierByLevel(rarityLevel: number): number {
        // 优先使用当前武器的稀有度伤害倍率配置
        if (this.weaponConfig && this.weaponConfig.rarityDamageMultipliers && Array.isArray(this.weaponConfig.rarityDamageMultipliers)) {
            const multipliers = this.weaponConfig.rarityDamageMultipliers;
            if (rarityLevel >= 0 && rarityLevel < multipliers.length) {
                return multipliers[rarityLevel];
            }
        }
        
        // 如果当前武器配置不存在，使用默认值
        switch (rarityLevel) {
            case 0: // common
                return 1; // 1级，无倍数
            case 1: // uncommon
                return 1.5; // 2级，1.5倍伤害
            case 2: // rare
                return 2.25; // 3级，2.25倍伤害
            case 3: // epic
                return 8; // 4级，8倍伤害

            default:
                return 1;
        }
    }
}