tanqiu/assets/scripts/CombatSystem/BlockManager.ts

import { _decorator, Component, Node, Prefab, instantiate, Vec3, EventTouch, Vec2, UITransform, find, Rect, Label, Color, Size, Sprite, SpriteFrame, resources, Button, Collider2D } from 'cc';
import { ConfigManager, WeaponConfig } from '../Core/ConfigManager';
import { SaveDataManager } from '../LevelSystem/SaveDataManager';
import { LevelSessionManager } from '../Core/LevelSessionManager';
import { LevelConfigManager } from '../LevelSystem/LevelConfigManager';
import { BlockTag } from './BlockSelection/BlockTag';
import { SkillManager } from './SkillSelection/SkillManager';
import EventBus, { GameEvents } from '../Core/EventBus';
import { sp } from 'cc';
const { ccclass, property } = _decorator;

@ccclass('BlockManager')
export class BlockManager extends Component {
    // 预制体数组，存储5个预制体
    @property([Prefab])
    public blockPrefabs: Prefab[] = [];
    
    // 网格容器节点
    @property({
        type: Node,
        tooltip: '拖拽GridContainer节点到这里'
    })
    public gridContainer: Node = null;
    
    // 方块容器节点（kuang）
    @property({
        type: Node,
        tooltip: '拖拽kuang节点到这里'
    })
    public kuangContainer: Node = null;
    
    // 金币标签节点
    @property({
        type: Node,
        tooltip: '拖拽CoinLabel节点到这里'
    })
    public coinLabelNode: Node = null;
    
    // 已放置方块容器节点
    @property({
        type: Node,
        tooltip: '拖拽PlacedBlocks节点到这里（Canvas/GameLevelUI/PlacedBlocks）'
    })
    public placedBlocksContainer: Node = null;
    
    // 游戏是否已开始
    public gameStarted: boolean = false;
    
    // 移除移动冷却：相关属性/逻辑已废弃
    
    // SaveDataManager 单例
    private saveDataManager: SaveDataManager = null; // 仅用于局外数据

    private session: LevelSessionManager = null;
    
    // 方块价格标签映射
    private blockPriceMap: Map<Node, Node> = new Map();
    
    // 已经生成的块
    private blocks: Node[] = [];
    // 当前拖拽的块
    private currentDragBlock: Node | null = null;
    // 拖拽起始位置
    private startPos = new Vec2();
    // 块的起始位置
    private blockStartPos: Vec3 = new Vec3();
    // 网格占用情况，用于控制台输出
    private gridOccupationMap: number[][] = [];
    // 网格行数和列数
    private readonly GRID_ROWS = 6;
    private readonly GRID_COLS = 11;
    // 是否已初始化网格信息
    private gridInitialized = false;
    // 存储网格节点信息
    private gridNodes: Node[][] = [];
    // 网格间距
    private gridSpacing = 54;
    // 不参与占用的节点名称列表
    private readonly NON_BLOCK_NODES: string[] = ['Weapon', 'Price'];
    // 临时保存方块的原始占用格子
    private tempRemovedOccupiedGrids: { block: Node, occupiedGrids: { row: number, col: number }[] }[] = [];
    // 方块原始位置（在kuang中的位置）
    private originalPositions: Map<Node, Vec3> = new Map();
    // 方块当前所在的区域
    private blockLocations: Map<Node, string> = new Map();
    
    // 配置管理器
    private configManager: ConfigManager = null;
    
    // 关卡配置管理器
    private levelConfigManager: LevelConfigManager = null;
    
    // 方块武器配置映射
    private blockWeaponConfigs: Map<Node, WeaponConfig> = new Map();
    
    /** 冷却机制已废弃，方块随时可移动 */
    private canMoveBlock(block: Node): boolean { return true; }


    // 清除所有冷却（游戏重置时调用）
    public clearAllCooldowns() { /* no-op */ }
    
    // 获取当前关卡的武器配置列表
    private async getCurrentLevelWeapons(): Promise<string[]> {
        if (!this.levelConfigManager || !this.saveDataManager) {
            console.warn('关卡配置管理器或存档管理器未初始化，使用默认武器列表');
            return [];
        }
        
        try {
            const currentLevel = this.saveDataManager.getCurrentLevel();
            const levelConfig = await this.levelConfigManager.getLevelConfig(currentLevel);
            
            if (levelConfig && levelConfig.weapons && Array.isArray(levelConfig.weapons)) {
                console.log(`关卡 ${currentLevel} 配置的武器:`, levelConfig.weapons);
                return levelConfig.weapons;
            } else {
                console.warn(`关卡 ${currentLevel} 没有配置武器列表`);
                return [];
            }
        } catch (error) {
            console.error('获取当前关卡武器配置失败:', error);
            return [];
        }
    }
    
    // 根据武器名称获取武器配置
    private getWeaponConfigByName(weaponName: string): WeaponConfig | null {
        if (!this.configManager) return null;
        
        const allWeapons = this.configManager.getAllWeapons();
        return allWeapons.find(weapon => weapon.name === weaponName) || null;
    }

    // 设置事件监听器
    private setupEventListeners() {
        const eventBus = EventBus.getInstance();
        
        // 监听重置方块管理器事件
        eventBus.on(GameEvents.RESET_BLOCK_MANAGER, this.onResetBlockManagerEvent, this);
    }
    
    // 处理重置方块管理器事件
    private onResetBlockManagerEvent() {
        console.log('[BlockManager] 接收到重置方块管理器事件');
        this.onGameReset();
    }
    
    start() {
        // 获取配置管理器
        this.configManager = ConfigManager.getInstance();
        if (!this.configManager) {
            console.error('无法获取ConfigManager实例');
        }
        
        // 获取关卡配置管理器
        this.levelConfigManager = LevelConfigManager.getInstance();
        if (!this.levelConfigManager) {
            console.error('无法获取LevelConfigManager实例');
        }

        // 如果没有指定GridContainer，尝试找到它
        if (!this.gridContainer) {
            this.gridContainer = find('Canvas/GameLevelUI/GameArea/GridContainer');
            if (!this.gridContainer) {
                console.error('找不到GridContainer节点');
                return;
            }
        }
        
        // 如果没有指定kuangContainer，尝试找到它
        if (!this.kuangContainer) {
            this.kuangContainer = find('Canvas/GameLevelUI/BlockSelectionUI/diban/kuang');
            if (!this.kuangContainer) {
                console.error('找不到kuang节点');
                return;
            }
        }
        
        // 如果没有指定coinLabelNode，尝试找到它
        if (!this.coinLabelNode) {
            this.coinLabelNode = find('Canvas/GameLevelUI/CoinNode/CoinLabel');
            if (!this.coinLabelNode) {
                console.error('找不到CoinLabel节点');
                return;
            }
        }
        
        // 如果没有指定placedBlocksContainer，尝试找到它
        if (!this.placedBlocksContainer) {
            this.placedBlocksContainer = find('Canvas/GameLevelUI/PlacedBlocks');   
        }
        
        // 确保有PlacedBlocks节点用于存放已放置的方块
        this.ensurePlacedBlocksNode();
        
        // 获取数据管理器
        this.saveDataManager = SaveDataManager.getInstance();
        this.session = LevelSessionManager.inst;
        
        // 初始化玩家金币显示
        this.updateCoinDisplay();
        
        // 初始化网格信息
        this.initGridInfo();
        
        // 初始化网格占用情况
        this.initGridOccupationMap();
        
        // 设置事件监听器
        this.setupEventListeners();
        
        // 等待配置加载完成后生成方块
        this.scheduleOnce(() => {
            this.generateRandomBlocksInKuang();
        }, 0.5);
    }
    
    // 确保有PlacedBlocks节点
    ensurePlacedBlocksNode() {
        // 如果已经通过拖拽设置了节点，直接使用
        if (this.placedBlocksContainer && this.placedBlocksContainer.isValid) {
            return;
        }
        
        // 尝试查找节点
        this.placedBlocksContainer = find('Canvas/GameLevelUI/PlacedBlocks');
        if (this.placedBlocksContainer) {
            return;
        }
        
        // 如果找不到，创建新节点
        const gameLevelUI = find('Canvas/GameLevelUI');
        if (!gameLevelUI) {
            console.error('找不到GameLevelUI节点，无法创建PlacedBlocks');
            return;
        }
        
        this.placedBlocksContainer = new Node('PlacedBlocks');
        gameLevelUI.addChild(this.placedBlocksContainer);
        if (!this.placedBlocksContainer.getComponent(UITransform)) {
            this.placedBlocksContainer.addComponent(UITransform);
        }
        console.log('已在GameLevelUI下创建PlacedBlocks节点');
    }
    
    // 初始化网格信息
    initGridInfo() {
        if (!this.gridContainer || this.gridInitialized) return;
        
        this.gridNodes = [];
        for (let row = 0; row < this.GRID_ROWS; row++) {
            this.gridNodes[row] = [];
        }
        
        for (let i = 0; i < this.gridContainer.children.length; i++) {
            const grid = this.gridContainer.children[i];
            if (grid.name.startsWith('Grid_')) {
                const parts = grid.name.split('_');
                if (parts.length === 3) {
                    const row = parseInt(parts[1]);
                    const col = parseInt(parts[2]);
                    
                    if (row >= 0 && row < this.GRID_ROWS && col >= 0 && col < this.GRID_COLS) {
                        this.gridNodes[row][col] = grid;
                    }
                }
            }
        }
        
        if (this.GRID_ROWS > 1 && this.GRID_COLS > 0) {
            if (this.gridNodes[0][0] && this.gridNodes[1][0]) {
                const pos1 = this.gridNodes[0][0].position;
                const pos2 = this.gridNodes[1][0].position;
                this.gridSpacing = Math.abs(pos2.y - pos1.y);
            }
        }
        
        this.gridInitialized = true;
    }
    
    // 初始化网格占用情况
    initGridOccupationMap() {
        this.gridOccupationMap = [];
        for (let row = 0; row < this.GRID_ROWS; row++) {
            const rowArray: number[] = [];
            for (let col = 0; col < this.GRID_COLS; col++) {
                rowArray.push(0);
            }
            this.gridOccupationMap.push(rowArray);
        }
    }
    
    // 在kuang下生成三个方块（基于关卡配置）
    private async generateRandomBlocksInKuang() {
        // 清除kuang区域中的旧方块，但不清除已放置在网格中的方块的标签
        this.clearBlocks();
        
        // 检查配置管理器是否可用
        if (!this.configManager || !this.configManager.isConfigLoaded()) {
            console.warn('配置管理器未初始化或配置未加载完成，延迟生成方块');
            this.scheduleOnce(() => {
                this.generateRandomBlocksInKuang();
            }, 1.0);
            return;
        }
        
        if (this.blockPrefabs.length === 0) {
            console.error('没有可用的预制体');
            return;
        }
        
        const kuangNode = this.kuangContainer;
        if (!kuangNode) {
            console.error('找不到kuang节点');
            return;
        }
        
        const offsets = [
            new Vec3(-200, 0, 0),
            new Vec3(0, 0, 0),
            new Vec3(200, 0, 0)
        ];
        
        const dbNodes = [
            kuangNode.getChildByName('db01'),
            kuangNode.getChildByName('db02'),
            kuangNode.getChildByName('db03')
        ];
        
        // 获取当前关卡的武器配置列表
        const levelWeapons = await this.getCurrentLevelWeapons();
        
        console.log('开始在kuang容器中生成武器方块，关卡武器配置:', levelWeapons);
        
        for (let i = 0; i < 3; i++) {
            let weaponConfig: WeaponConfig | null = null;
            
            // 如果关卡配置了武器列表，从中随机选择
            if (levelWeapons.length > 0) {
                const randomWeaponName = levelWeapons[Math.floor(Math.random() * levelWeapons.length)];
                weaponConfig = this.getWeaponConfigByName(randomWeaponName);
                
                if (!weaponConfig) {
                    console.warn(`关卡配置的武器 "${randomWeaponName}" 在武器配置文件中未找到，使用随机武器`);
                    weaponConfig = this.configManager.getRandomWeapon();
                }
            } else {
                // 如果关卡没有配置武器列表，使用随机武器
                console.warn('关卡未配置武器列表，使用随机武器');
                weaponConfig = this.configManager.getRandomWeapon();
            }
            
            if (!weaponConfig) {
                console.error(`无法获取第 ${i + 1} 个武器配置`);
                continue;
            }
            
            // 基于武器配置选择合适的预制体
            const prefab = this.selectPrefabForWeapon(weaponConfig);
            if (!prefab) {
                console.error(`无法为武器 ${weaponConfig.name} 选择合适的预制体`);
                continue;
            }
            
            const block = instantiate(prefab);
            kuangNode.addChild(block);
            
            block.position = offsets[i];
            
            // 设置方块名称
            block.name = `WeaponBlock_${weaponConfig.id}`;
            
            // 保存武器配置到方块
            this.blockWeaponConfigs.set(block, weaponConfig);
            block['weaponConfig'] = weaponConfig;
            block['weaponId'] = weaponConfig.id;
            
            this.originalPositions.set(block, offsets[i].clone());
            this.blockLocations.set(block, 'kuang');
            this.blocks.push(block);
            
            if (dbNodes[i]) {
                const priceNode = dbNodes[i].getChildByName('Price');
                if (priceNode) {
                    this.blockPriceMap.set(block, priceNode);
                    priceNode.active = true;
                    
                    // 根据武器稀有度设置价格
                    this.setBlockPriceByRarity(priceNode, weaponConfig.rarity);
                }
                
                this.associateDbNodeWithBlock(block, dbNodes[i]);
            }
            
            // 设置方块的武器外观
            this.setupBlockWeaponVisual(block, weaponConfig);
            
            this.setupDragEvents(block);
            
            // 为新生成的方块添加标签
            BlockTag.addTag(block);
        }
        
        this.updateCoinDisplay();
    }
    
    // 将db节点与方块关联
    associateDbNodeWithBlock(block: Node, dbNode: Node) {
        block['dbNode'] = dbNode;
        
        block.on(Node.EventType.TRANSFORM_CHANGED, () => {
            if (dbNode && block.parent) {
                const location = this.blockLocations.get(block);
                
                if (location === 'grid') {
                    dbNode.active = false;
                    return;
                }
                
                dbNode.active = true;
                
                const worldPos = block.parent.getComponent(UITransform).convertToWorldSpaceAR(block.position);
                const localPos = dbNode.parent.getComponent(UITransform).convertToNodeSpaceAR(worldPos);
                
                dbNode.position = new Vec3(localPos.x, localPos.y - 80, localPos.z);
            }
        });
    }
    
    // 更新金币显示
    updateCoinDisplay() {
        if (this.coinLabelNode) {
            const label = this.coinLabelNode.getComponent(Label);
            if (label) {
                const coins = this.session.getCoins();
                label.string = coins.toString();
            }
        }
    }
    
    // 获取方块价格
    getBlockPrice(block: Node): number {
        const priceNode = this.blockPriceMap.get(block);
        if (priceNode) {
            const label = priceNode.getComponent(Label);
            if (label) {
                const price = parseInt(label.string);
                if (!isNaN(price)) {
                    return price;
                }
            }
        }
        return 50;
    }
    
    // 隐藏价格标签
    hidePriceLabel(block: Node) {
        const priceNode = this.blockPriceMap.get(block);
        if (priceNode) {
            priceNode.active = false;
        }
    }
    
    // 显示价格标签
    showPriceLabel(block: Node) {
        const priceNode = this.blockPriceMap.get(block);
        if (priceNode) {
            priceNode.active = true;
        }
    }
    
    // 扣除玩家金币
    deductPlayerCoins(amount: number): boolean {
        const success = this.session.spendCoins(amount);
        if (success) {
            this.updateCoinDisplay();
        }
        return success;
    }
    
    // 归还玩家金币
    refundPlayerCoins(amount: number) {
        this.session.addCoins(amount);
        this.updateCoinDisplay();
    }
    
    // 设置拖拽事件
    setupDragEvents(block: Node) {
        block.on(Node.EventType.TOUCH_START, (event: EventTouch) => {
            if (this.gameStarted && this.blockLocations.get(block) === 'grid') {
                if (!this.canMoveBlock(block)) {
                    return;
                }
            }
            
            this.currentDragBlock = block;
            this.startPos = event.getUILocation();
            this.blockStartPos.set(block.position);
            this.currentDragBlock['startLocation'] = this.blockLocations.get(block);
            
            block.setSiblingIndex(block.parent.children.length - 1);
            this.tempStoreBlockOccupiedGrids(block);
            // 拖拽开始时禁用碰撞体
            const collider = block.getComponent(Collider2D);
            if (collider) collider.enabled = false;
        }, this);
        
        block.on(Node.EventType.TOUCH_MOVE, (event: EventTouch) => {
            if (this.gameStarted && this.blockLocations.get(block) === 'grid') {
                if (!this.canMoveBlock(block)) {
                    return;
                }
            }
            
            if (!this.currentDragBlock) return;
            
            const location = event.getUILocation();
            const deltaX = location.x - this.startPos.x;
            const deltaY = location.y - this.startPos.y;
            
            this.currentDragBlock.position = new Vec3(
                this.blockStartPos.x + deltaX,
                this.blockStartPos.y + deltaY,
                this.blockStartPos.z
            );
        }, this);
        
        block.on(Node.EventType.TOUCH_END, (event: EventTouch) => {
            if (this.gameStarted && this.blockLocations.get(block) === 'grid') {
                if (!this.canMoveBlock(block)) {
                    return;
                }
            }
            
            if (this.currentDragBlock) {
                this.handleBlockDrop(event);
                
          
                this.currentDragBlock = null;
                // 拖拽结束时恢复碰撞体
                const collider = block.getComponent(Collider2D);
                if (collider) collider.enabled = true;
            }
        }, this);
        
        block.on(Node.EventType.TOUCH_CANCEL, () => {
            if (this.currentDragBlock) {
                this.returnBlockToOriginalPosition();
                this.currentDragBlock = null;
                // 拖拽取消时恢复碰撞体
                const collider = block.getComponent(Collider2D);
                if (collider) collider.enabled = true;
            }
        }, this);
    }
    
    // 处理方块放下
    handleBlockDrop(event: EventTouch) {
        const touchPos = event.getLocation();
        const startLocation = this.currentDragBlock['startLocation'];
        
        if (this.isInKuangArea(touchPos)) {
            // 检查是否有标签，只有有标签的方块才能放回kuang
            if (BlockTag.hasTag(this.currentDragBlock)) {
                this.returnBlockToKuang(startLocation);
            } else {
                // 没有标签的方块不能放回kuang，返回原位置
                console.log(`[BlockManager] 方块 ${this.currentDragBlock.name} 没有标签，不能放回kuang区域`);
                this.returnBlockToOriginalPosition();
            }
        } else if (this.tryPlaceBlockToGrid(this.currentDragBlock)) {
            this.handleSuccessfulPlacement(startLocation);
        } else {
            // 放置失败，尝试直接与重叠方块合成
            if (this.tryMergeOnOverlap(this.currentDragBlock)) {
                // 合成成功时，若来自 kuang 则扣费
                if (startLocation !== 'grid') {
                    const price = this.getBlockPrice(this.currentDragBlock);
                    this.deductPlayerCoins(price);
                }
                // 当前拖拽块已被销毁（合并时），无需复位
            } else {
                this.returnBlockToOriginalPosition();
            }
        }
    }
    
    // 返回方块到kuang区域
    returnBlockToKuang(startLocation: string) {
        const originalPos = this.originalPositions.get(this.currentDragBlock);
        if (originalPos) {
            const kuangNode = this.kuangContainer;
            if (kuangNode && this.currentDragBlock.parent !== kuangNode) {
                this.currentDragBlock.removeFromParent();
                kuangNode.addChild(this.currentDragBlock);
            }
            
            this.currentDragBlock.position = originalPos.clone();
        }
        
        this.restoreBlockOccupiedGrids(this.currentDragBlock);
        this.blockLocations.set(this.currentDragBlock, 'kuang');
        this.showPriceLabel(this.currentDragBlock);
        
        if (startLocation === 'grid') {
            const price = this.getBlockPrice(this.currentDragBlock);
            this.refundPlayerCoins(price);
            this.currentDragBlock['placedBefore'] = false;
        }
        
        const dbNode = this.currentDragBlock['dbNode'];
        if (dbNode) {
            dbNode.active = true;
            this.currentDragBlock.emit(Node.EventType.TRANSFORM_CHANGED);
        }
    }
    
    // 处理成功放置
    handleSuccessfulPlacement(startLocation: string) {
        const price = this.getBlockPrice(this.currentDragBlock);
        
        if (startLocation === 'grid') {
            this.clearTempStoredOccupiedGrids(this.currentDragBlock);
            this.blockLocations.set(this.currentDragBlock, 'grid');
            this.hidePriceLabel(this.currentDragBlock);
            
            const dbNode = this.currentDragBlock['dbNode'];
            if (dbNode) {
                dbNode.active = false;
            }
            
            // 立即将方块移动到PlacedBlocks节点下，不等游戏开始
            this.moveBlockToPlacedBlocks(this.currentDragBlock);
            
            // 如果游戏已开始，添加锁定视觉提示
            if (this.gameStarted) {
                this.addLockedVisualHint(this.currentDragBlock);
                
                // 游戏开始后放置的方块移除标签，不能再放回kuang
                BlockTag.removeTag(this.currentDragBlock);
            }

            // 检查并执行合成
            this.tryMergeBlock(this.currentDragBlock);
        } else {
            if (this.deductPlayerCoins(price)) {
                this.clearTempStoredOccupiedGrids(this.currentDragBlock);
                this.blockLocations.set(this.currentDragBlock, 'grid');
                this.hidePriceLabel(this.currentDragBlock);
                
                const dbNode = this.currentDragBlock['dbNode'];
                if (dbNode) {
                    dbNode.active = false;
                }
                
                this.currentDragBlock['placedBefore'] = true;
                
                // 立即将方块移动到PlacedBlocks节点下，不等游戏开始
                this.moveBlockToPlacedBlocks(this.currentDragBlock);
                
                // 如果游戏已开始，添加锁定视觉提示
                if (this.gameStarted) {
                    this.addLockedVisualHint(this.currentDragBlock);
                    
                    // 游戏开始后放置的方块移除标签，不能再放回kuang
                    BlockTag.removeTag(this.currentDragBlock);
                }

                // 检查并执行合成
                this.tryMergeBlock(this.currentDragBlock);
            } else {
                this.returnBlockToOriginalPosition();
            }
        }
    }
    
    // 返回方块到原位置
    returnBlockToOriginalPosition() {
        const currentLocation = this.blockLocations.get(this.currentDragBlock);
        if (currentLocation === 'kuang') {
            const originalPos = this.originalPositions.get(this.currentDragBlock);
            if (originalPos) {
                this.currentDragBlock.position = originalPos.clone();
            }
        } else {
            this.currentDragBlock.position = this.blockStartPos.clone();
        }
        
        this.restoreBlockOccupiedGrids(this.currentDragBlock);
        this.showPriceLabel(this.currentDragBlock);
        
        const dbNode = this.currentDragBlock['dbNode'];
        if (dbNode) {
            dbNode.active = true;
            this.currentDragBlock.emit(Node.EventType.TRANSFORM_CHANGED);
        }
    }
    
    // 检查是否在kuang区域内
    isInKuangArea(touchPos: Vec2): boolean {
        if (!this.kuangContainer) return false;
        
        const kuangTransform = this.kuangContainer.getComponent(UITransform);
        if (!kuangTransform) return false;
        
        const kuangBoundingBox = new Rect(
            this.kuangContainer.worldPosition.x - kuangTransform.width * kuangTransform.anchorX,
            this.kuangContainer.worldPosition.y - kuangTransform.height * kuangTransform.anchorY,
            kuangTransform.width,
            kuangTransform.height
        );
        
        return kuangBoundingBox.contains(new Vec2(touchPos.x, touchPos.y));
    }
    
    // 临时保存方块占用的网格
    tempStoreBlockOccupiedGrids(block: Node) {
        const occupiedGrids = block['occupiedGrids'];
        if (!occupiedGrids || occupiedGrids.length === 0) return;
        
        this.tempRemovedOccupiedGrids.push({
            block: block,
            occupiedGrids: [...occupiedGrids]
        });
        
        for (const grid of occupiedGrids) {
            if (grid.row >= 0 && grid.row < this.GRID_ROWS && 
                grid.col >= 0 && grid.col < this.GRID_COLS) {
                this.gridOccupationMap[grid.row][grid.col] = 0;
            }
        }
        
        block['occupiedGrids'] = [];
    }
    
    // 恢复方块原来的占用状态
    restoreBlockOccupiedGrids(block: Node) {
        const index = this.tempRemovedOccupiedGrids.findIndex(item => item.block === block);
        if (index === -1) return;
        
        const savedItem = this.tempRemovedOccupiedGrids[index];
        
        for (const grid of savedItem.occupiedGrids) {
            if (grid.row >= 0 && grid.row < this.GRID_ROWS && 
                grid.col >= 0 && grid.col < this.GRID_COLS) {
                this.gridOccupationMap[grid.row][grid.col] = 1;
            }
        }
        
        block['occupiedGrids'] = [...savedItem.occupiedGrids];
        this.tempRemovedOccupiedGrids.splice(index, 1);
    }
    
    // 清除临时保存的占用状态
    clearTempStoredOccupiedGrids(block: Node) {
        const index = this.tempRemovedOccupiedGrids.findIndex(item => item.block === block);
        if (index === -1) return;
        
        this.tempRemovedOccupiedGrids.splice(index, 1);
    }
    
    // 尝试将方块放置到网格中
    tryPlaceBlockToGrid(block: Node): boolean {
        if (!this.gridContainer || !this.gridInitialized) return false;
        
        let b1Node = block;
        if (block.name !== 'B1') {
            b1Node = block.getChildByName('B1');
            if (!b1Node) {
                return false;
            }
        }
        
        const b1WorldPos = b1Node.parent.getComponent(UITransform).convertToWorldSpaceAR(b1Node.position);
        const gridPos = this.gridContainer.getComponent(UITransform).convertToNodeSpaceAR(b1WorldPos);
        
        const gridSize = this.gridContainer.getComponent(UITransform).contentSize;
        const halfWidth = gridSize.width / 2;
        const halfHeight = gridSize.height / 2;
        
        const tolerance = this.gridSpacing * 0.5;
        if (gridPos.x < -halfWidth - tolerance || gridPos.x > halfWidth + tolerance || 
            gridPos.y < -halfHeight - tolerance || gridPos.y > halfHeight + tolerance) {
            return false;
        }
        
        const nearestGrid = this.findNearestGridNode(gridPos);
        if (!nearestGrid) {
            return false;
        }
        
        return this.tryPlaceBlockToSpecificGrid(block, nearestGrid);
    }
    
    // 找到最近的网格节点
    findNearestGridNode(position: Vec3): Node {
        if (!this.gridContainer || !this.gridInitialized) return null;
        
        let nearestNode: Node = null;
        let minDistance = Number.MAX_VALUE;
        
        for (let row = 0; row < this.GRID_ROWS; row++) {
            for (let col = 0; col < this.GRID_COLS; col++) {
                const grid = this.gridNodes[row][col];
                if (grid) {
                    const distance = Vec3.distance(position, grid.position);
                    if (distance < minDistance) {
                        minDistance = distance;
                        nearestNode = grid;
                    }
                }
            }
        }
        
        if (minDistance > this.gridSpacing * 2) {
            return null;
        }
        
        return nearestNode;
    }
    
    // 尝试将方块放置到指定的网格节点
    tryPlaceBlockToSpecificGrid(block: Node, targetGrid: Node): boolean {
        let b1Node = block;
        if (block.name !== 'B1') {
            b1Node = block.getChildByName('B1');
            if (!b1Node) {
                return false;
            }
        }
        
        if (!this.canPlaceBlockAt(block, targetGrid)) {
            return false;
        }
        
        const gridCenterWorldPos = this.gridContainer.getComponent(UITransform).convertToWorldSpaceAR(targetGrid.position);
        const targetWorldPos = gridCenterWorldPos.clone();
        
        const b1LocalPos = b1Node.position.clone();
        
        let rootTargetWorldPos;
        if (b1Node === block) {
            rootTargetWorldPos = targetWorldPos.clone();
        } else {
            rootTargetWorldPos = new Vec3(
                targetWorldPos.x - b1LocalPos.x,
                targetWorldPos.y - b1LocalPos.y,
                targetWorldPos.z
            );
        }
        
        const rootTargetLocalPos = block.parent.getComponent(UITransform).convertToNodeSpaceAR(rootTargetWorldPos);
        
        block.position = rootTargetLocalPos;
        this.markOccupiedPositions(block, targetGrid);
        
        return true;
    }
    
    // 检查方块是否可以放置在指定位置
    canPlaceBlockAt(block: Node, targetGrid: Node): boolean {
        if (!this.gridInitialized) return false;
        
        const targetRowCol = this.getGridRowCol(targetGrid);
        if (!targetRowCol) return false;
        
        const parts = this.getBlockParts(block);
        
        for (const part of parts) {
            const row = targetRowCol.row - part.y;
            const col = targetRowCol.col + part.x;
            
            if (row < 0 || row >= this.GRID_ROWS || col < 0 || col >= this.GRID_COLS) {
                return false;
            }
            
            if (this.gridOccupationMap[row][col] === 1) {
                return false;
            }
        }
        
        return true;
    }
    
    // 获取网格行列索引
    getGridRowCol(gridNode: Node): { row: number, col: number } | null {
        if (!gridNode || !gridNode.name.startsWith('Grid_')) return null;
        
        const parts = gridNode.name.split('_');
        if (parts.length === 3) {
            const row = parseInt(parts[1]);
            const col = parseInt(parts[2]);
            
            if (row >= 0 && row < this.GRID_ROWS && col >= 0 && col < this.GRID_COLS) {
                return { row, col };
            }
        }
        
        return null;
    }
    
    // 获取方块的所有部分节点及其相对坐标
    getBlockParts(block: Node): { node: Node, x: number, y: number }[] {
        const parts: { node: Node, x: number, y: number }[] = [];
        
        // 检查根节点是否有B1子节点，如果有，则B1是实际的形状根节点
        const b1Node = block.getChildByName('B1');
        if (b1Node) {
            // B1节点作为(0,0)位置
            parts.push({ node: b1Node, x: 0, y: 0 });
            this.findBlockParts(b1Node, parts, 0, 0);
        } else {
            // 没有B1节点，使用根节点
            parts.push({ node: block, x: 0, y: 0 });
            this.findBlockParts(block, parts, 0, 0);
        }
        
        return parts;
    }
    
    // 递归查找方块的所有部分
    findBlockParts(node: Node, result: { node: Node, x: number, y: number }[], parentX: number, parentY: number) {
        for (let i = 0; i < node.children.length; i++) {
            const child = node.children[i];
            
            if (this.NON_BLOCK_NODES.indexOf(child.name) !== -1) {
                continue;
            }
            
            let x = parentX;
            let y = parentY;
            
            const match = child.name.match(/^\((-?\d+),(-?\d+)\)$/);
            if (match) {
                x = parseInt(match[1]);
                y = parseInt(match[2]);
                result.push({ node: child, x, y });
            } else if (child.name.startsWith('B')) {
                const relativeX = Math.round(child.position.x / this.gridSpacing);
                const relativeY = -Math.round(child.position.y / this.gridSpacing);
                
                x = parentX + relativeX;
                y = parentY + relativeY;
                
                result.push({ node: child, x, y });
            }
            
            this.findBlockParts(child, result, x, y);
        }
    }
    
    // 标记方块占用的格子
    markOccupiedPositions(block: Node, targetGrid: Node) {
        if (!this.gridInitialized) return;
        
        const targetRowCol = this.getGridRowCol(targetGrid);
        if (!targetRowCol) return;
        
        const parts = this.getBlockParts(block);
        
        block['occupiedGrids'] = [];
        
        for (const part of parts) {
            const row = targetRowCol.row - part.y;
            const col = targetRowCol.col + part.x;
            
            if (row >= 0 && row < this.GRID_ROWS && col >= 0 && col < this.GRID_COLS) {
                this.gridOccupationMap[row][col] = 1;
                
                block['occupiedGrids'] = block['occupiedGrids'] || [];
                block['occupiedGrids'].push({ row, col });
            }
        }
    }
    
    // 清除方块
    clearBlocks() {
        const blocksToRemove = [];
        
        for (const block of this.blocks) {
            if (block.isValid) {
                const location = this.blockLocations.get(block);
                if (location === 'kuang') {
                    blocksToRemove.push(block);
                }
            }
        }
        
        for (const block of blocksToRemove) {
            const dbNode = block['dbNode'];
            if (dbNode && dbNode.isValid) {
                block.off(Node.EventType.TRANSFORM_CHANGED);
                
                const kuangNode = this.kuangContainer;
                if (kuangNode) {
                    const dbName = dbNode.name;
                    if (!kuangNode.getChildByName(dbName)) {
                        dbNode.parent = kuangNode;
                    }
                }
            }
            
            const index = this.blocks.indexOf(block);
            if (index !== -1) {
                this.blocks.splice(index, 1);
            }
            
            this.originalPositions.delete(block);
            this.blockLocations.delete(block);
            this.blockPriceMap.delete(block);
            // 清理武器配置映射
            this.blockWeaponConfigs.delete(block);
            
            block.destroy();
        }
    }
    
    // 游戏开始时调用
    onGameStart() {
        this.gameStarted = true;
        
        for (const block of this.blocks) {
            if (block.isValid) {
                const location = this.blockLocations.get(block);
                
                if (location === 'grid') {
                    this.hidePriceLabel(block);
                    
                    const dbNode = block['dbNode'];
                    if (dbNode) {
                        dbNode.active = false;
                    }
                    
                    this.moveBlockToPlacedBlocks(block);
                    this.addLockedVisualHint(block);
                    
                    // 游戏开始后放置的方块移除标签，不能再放回kuang
                    BlockTag.removeTag(block);
                }
            }
        }
    }
    
    // 游戏重置时调用
    onGameReset() {
        console.log('[BlockManager] 游戏重置，清理所有状态');
        
        this.gameStarted = false;
        this.clearAllCooldowns();
        
        // 清理已放置的方块
        this.clearPlacedBlocks();
        
        // 重置网格占用状态
        this.resetGridOccupation();
        
        // 清理kuang区域的方块
        this.clearBlocks();
        
        // 清理所有方块标签
        BlockTag.clearAllTags();
        
        // 重新生成方块
        this.generateRandomBlocksInKuang();
        
        console.log('[BlockManager] 游戏重置完成');
    }
    
    // 清理已放置的方块
    private clearPlacedBlocks() {
        if (!this.placedBlocksContainer || !this.placedBlocksContainer.isValid) {
            return;
        }
        
        console.log(`[BlockManager] 清理已放置方块，当前数量: ${this.placedBlocksContainer.children.length}`);
        
        // 清理PlacedBlocks容器中的所有方块
        const placedBlocks = [...this.placedBlocksContainer.children];
        for (const block of placedBlocks) {
            if (block && block.isValid) {
                // 从blocks数组中移除
                const index = this.blocks.indexOf(block);
                if (index !== -1) {
                    this.blocks.splice(index, 1);
                }
                
                // 清理相关映射
                this.originalPositions.delete(block);
                this.blockLocations.delete(block);
                this.blockPriceMap.delete(block);
                this.blockWeaponConfigs.delete(block);
                
                // 销毁方块
                block.destroy();
            }
        }
    }
    
    // 重置网格占用状态
    private resetGridOccupation() {
        console.log('[BlockManager] 重置网格占用状态');
        
        // 重新初始化网格占用地图
        this.gridOccupationMap = [];
        for (let row = 0; row < this.GRID_ROWS; row++) {
            this.gridOccupationMap[row] = [];
            for (let col = 0; col < this.GRID_COLS; col++) {
                this.gridOccupationMap[row][col] = 0;
            }
        }
        
        // 清理临时存储的占用状态
        this.tempRemovedOccupiedGrids = [];
    }
    
    // 添加视觉提示，表明方块已锁定
    addLockedVisualHint(block: Node) {
        const children = block.children;
        for (let i = 0; i < children.length; i++) {
            const child = children[i];
            if (this.NON_BLOCK_NODES.indexOf(child.name) !== -1) {
                continue;
            }
            
            child.setScale(new Vec3(0.95, 0.95, 1));
        }
        
    }
    
    // 将方块移动到PlacedBlocks节点下
    moveBlockToPlacedBlocks(block: Node) {
        if (!this.placedBlocksContainer) {
            console.error('PlacedBlocks容器未设置');
            return;
        }
        
        if (!this.placedBlocksContainer.isValid) {
            console.error('PlacedBlocks容器已失效');
            return;
        }
        
        const worldPosition = new Vec3();
        block.getWorldPosition(worldPosition);
        
        // 移除旧的触摸事件监听器
        block.off(Node.EventType.TOUCH_START);
        block.off(Node.EventType.TOUCH_MOVE);
        block.off(Node.EventType.TOUCH_END);
        block.off(Node.EventType.TOUCH_CANCEL);
        
        block.removeFromParent();
        this.placedBlocksContainer.addChild(block);
        block.setWorldPosition(worldPosition);
        
        // 重新设置触摸事件监听器
        this.setupDragEvents(block);
    }
    
    // 根据武器配置选择合适的预制体
    private selectPrefabForWeapon(weaponConfig: WeaponConfig): Prefab | null {
        if (this.blockPrefabs.length === 0) {
            return null;
        }
        
        // 获取所有可用的方块形状配置
        const blockShapes = this.configManager.getBlockShapes();
        if (!blockShapes || blockShapes.length === 0) {
            console.warn('没有可用的方块形状配置，使用随机预制体');
            const randomIndex = Math.floor(Math.random() * this.blockPrefabs.length);
            return this.blockPrefabs[randomIndex];
        }
        
        // 随机选择一个方块形状
        const randomShapeIndex = Math.floor(Math.random() * blockShapes.length);
        const targetShape = blockShapes[randomShapeIndex];
        
        // 寻找与目标形状匹配的预制体
        const matchingPrefab = this.findMatchingPrefab(targetShape);
        if (matchingPrefab) {
            console.log(`为武器 ${weaponConfig.name} 选择了匹配的预制体，形状: ${targetShape.name}`);
            return matchingPrefab;
        }
        
        // 如果没有找到匹配的预制体，使用随机预制体
        console.warn(`没有找到匹配形状 ${targetShape.name} 的预制体，使用随机预制体`);
        const randomIndex = Math.floor(Math.random() * this.blockPrefabs.length);
        return this.blockPrefabs[randomIndex];
    }
    
    // 根据稀有度设置方块价格
    private setBlockPriceByRarity(priceNode: Node, rarity: string) {
        const label = priceNode.getComponent(Label);
        if (!label) {
            return;
        }
        
        let basePrice: number;
        switch (rarity) {
            case 'common':
                basePrice = 10;
                break;
            case 'uncommon':
                basePrice = 20;
                break;
            case 'rare':
                basePrice = 50;
                break;
            case 'epic':
                basePrice = 100;
                break;
            case 'legendary':
                basePrice = 150;
                break;
            default:
                basePrice = 200;
        }
        
        // 应用便宜技能效果
        const skillManager = SkillManager.getInstance();
        let finalPrice = basePrice;
        if (skillManager) {
            const cheaperSkillLevel = skillManager.getSkillLevel('cheaper_units');
            finalPrice = Math.ceil(SkillManager.calculateCheaperUnitsPrice(basePrice, cheaperSkillLevel));
        }
        
        label.string = finalPrice.toString();
    }
    
    // 设置方块的武器外观
    private setupBlockWeaponVisual(block: Node, weaponConfig: WeaponConfig) {
        // 设置方块的稀有度颜色
        this.setBlockRarityColor(block, weaponConfig.rarity);
        
        // 加载武器图标
        this.loadWeaponIcon(block, weaponConfig);
    }
    
    // 设置方块稀有度颜色
    private setBlockRarityColor(block: Node, rarity: string) {
        // Add null safety check for block
        if (!block || !block.isValid) {
            return;
        }
        
        const sprite = block.getComponent(Sprite);
        if (!sprite || !sprite.isValid) {
            return;
        }
        
        // 根据稀有度设置颜色
        let color: Color;
        switch (rarity) {
            case 'common':
                color = new Color(255, 255, 255); // 白色
                break;
            case 'uncommon':
                color = new Color(0, 255, 0); // 绿色
                break;
            case 'rare':
                color = new Color(0, 100, 255); // 蓝色
                break;
            case 'epic':
                color = new Color(160, 32, 240); // 紫色
                break;
            case 'legendary':
                color = new Color(255, 165, 0); // 橙色
                break;
            default:
                color = new Color(255, 255, 255); // 默认白色
        }
        
        sprite.color = color;
    }
    
    // 加载武器图标
    private loadWeaponIcon(block: Node, weaponConfig: WeaponConfig) {
        // 根据预制体结构：WeaponBlock -> B1 -> Weapon
        const b1Node = block.getChildByName('B1');
        if (!b1Node) {
            console.warn('找不到B1节点');
            return;
        }
        
        const weaponNode = b1Node.getChildByName('Weapon');
        if (!weaponNode) {
            console.warn('找不到Weapon节点');
            return;
        }
        
        const weaponSprite = weaponNode.getComponent(Sprite);
        if (!weaponSprite) {
            console.warn('Weapon节点上没有Sprite组件');
            return;
        }
        
        // 获取武器配置中的图片路径
        const spriteConfig = weaponConfig.visualConfig?.weaponSprites;
        if (!spriteConfig) {
            console.warn(`武器 ${weaponConfig.name} 没有配置图片信息`);
            return;
        }
        
        // 选择合适的图片路径（这里默认使用1x1）
        const spritePath = spriteConfig['1x1'] || spriteConfig['1x2'] || spriteConfig['2x1'] || spriteConfig['2x2'];
        if (!spritePath) {
            console.warn(`武器 ${weaponConfig.name} 没有可用的图片路径`);
            return;
        }
        
        // 正确的SpriteFrame子资源路径
        const spriteFramePath = `${spritePath}/spriteFrame`;
        
        // 加载SpriteFrame子资源
        resources.load(spriteFramePath, SpriteFrame, (err, spriteFrame) => {
            if (err) {
                console.warn(`加载武器图片失败: ${spriteFramePath}`, err);
                return;
            }
            
            // Add comprehensive null safety checks before setting spriteFrame
            if (weaponSprite && weaponSprite.isValid && 
                weaponNode && weaponNode.isValid && 
                block && block.isValid && 
                spriteFrame && spriteFrame.isValid) {
                weaponSprite.spriteFrame = spriteFrame;
            }
        });
    }
    
    // 根据方块获取武器配置
    public getBlockWeaponConfig(block: Node): WeaponConfig | null {
        return this.blockWeaponConfigs.get(block) || block['weaponConfig'] || null;
    }
    
    // 获取方块的武器ID
    public getBlockWeaponId(block: Node): string | null {
        const weaponConfig = this.getBlockWeaponConfig(block);
        return weaponConfig ? weaponConfig.id : null;
    }

    // 获取方块的形状
    public getBlockShape(block: Node): string | null {
        const weaponConfig = this.getBlockWeaponConfig(block);
        if (!weaponConfig) return null;
        
        // 从方块结构推断形状
        return this.inferBlockShapeFromStructure(block);
    }
    
    // 获取方块的详细形状信息（包括形状ID和名称）
    public getBlockShapeInfo(block: Node): { id: string, name: string, shape: number[][] } | null {
        const actualShape = this.extractShapeFromBlock(block);
        const blockShapes = this.configManager.getBlockShapes();
        
        if (!blockShapes) return null;
        
        // 寻找匹配的形状配置
        for (const shapeConfig of blockShapes) {
            if (this.compareShapeMatrices(actualShape, shapeConfig.shape)) {
                return {
                    id: shapeConfig.id,
                    name: shapeConfig.name,
                    shape: shapeConfig.shape
                };
            }
        }
        
        return null;
    }

    // 从方块结构推断形状
    private inferBlockShapeFromStructure(block: Node): string {
        const parts = this.getBlockParts(block);
        if (parts.length === 0) return '1x1';
        
        // 计算方块的边界
        let minX = 0, maxX = 0, minY = 0, maxY = 0;
        for (const part of parts) {
            minX = Math.min(minX, part.x);
            maxX = Math.max(maxX, part.x);
            minY = Math.min(minY, part.y);
            maxY = Math.max(maxY, part.y);
        }
        
        const width = maxX - minX + 1;
        const height = maxY - minY + 1;
        
        return `${width}x${height}`;
    }
    
    // 寻找与目标形状匹配的预制体
    private findMatchingPrefab(targetShape: any): Prefab | null {
        for (const prefab of this.blockPrefabs) {
            if (this.doesPrefabMatchShape(prefab, targetShape)) {
                return prefab;
            }
        }
        return null;
    }
    
    // 检查预制体是否匹配指定形状
    private doesPrefabMatchShape(prefab: Prefab, targetShape: any): boolean {
        // 创建临时实例来检查形状
        const tempBlock = instantiate(prefab);
        const parts = this.getBlockParts(tempBlock);
        console.log(`${prefab.name} 的部件坐标:`, parts.map(p => `(${p.x},${p.y})`));
        const actualShape = this.extractShapeFromBlock(tempBlock);
        tempBlock.destroy();
        
        // 添加调试日志
        console.log(`检查预制体 ${prefab.name} 是否匹配形状 ${targetShape.name}`);
        console.log('预制体实际形状:', actualShape);
        console.log('目标形状:', targetShape.shape);
        
        // 比较形状矩阵
        const matches = this.compareShapeMatrices(actualShape, targetShape.shape);
        console.log('匹配结果:', matches);
        return matches;
    }
    
    // 从方块实例中提取形状矩阵
    private extractShapeFromBlock(block: Node): number[][] {
        const parts = this.getBlockParts(block);
        
        // 创建4x4矩阵
        const matrix: number[][] = [];
        for (let i = 0; i < 4; i++) {
            matrix[i] = [0, 0, 0, 0];
        }
        
        // 找到最小坐标作为偏移基准
        let minX = 0, minY = 0;
        for (const part of parts) {
            minX = Math.min(minX, part.x);
            minY = Math.min(minY, part.y);
        }
        
        // 填充矩阵，将坐标标准化到从(0,0)开始
        for (const part of parts) {
            const matrixX = part.x - minX;
            const matrixY = (part.y - minY); // 不需要Y轴翻转，直接使用相对坐标
            
            if (matrixX >= 0 && matrixX < 4 && matrixY >= 0 && matrixY < 4) {
                matrix[matrixY][matrixX] = 1;
            }
        }
        
        // 对矩阵进行上下翻转（交换第0行和第1行）
        const temp = matrix[0];
        matrix[0] = matrix[1];
        matrix[1] = temp;
        
        return matrix;
    }
    
    // 比较两个形状矩阵是否相同
    private compareShapeMatrices(matrix1: number[][], matrix2: number[][]): boolean {
        if (matrix1.length !== matrix2.length) return false;
        
        for (let i = 0; i < matrix1.length; i++) {
            if (matrix1[i].length !== matrix2[i].length) return false;
            for (let j = 0; j < matrix1[i].length; j++) {
                if (matrix1[i][j] !== matrix2[i][j]) return false;
            }
        }
        
        return true;
    }

    // 检查两个方块是否可以合成（相同形状相同种类）
    private canMergeBlocks(block1: Node, block2: Node): boolean {
        // 检查稀有度
        const rarity1 = this.getBlockRarity(block1);
        const rarity2 = this.getBlockRarity(block2);
        if (rarity1 !== rarity2) {
            console.log(`[BlockManager] 稀有度不匹配: ${rarity1} vs ${rarity2}`);
            return false;
        }
        
        // 检查武器ID（种类）
        const weaponId1 = this.getBlockWeaponId(block1);
        const weaponId2 = this.getBlockWeaponId(block2);
        if (weaponId1 !== weaponId2) {
            console.log(`[BlockManager] 武器种类不匹配: ${weaponId1} vs ${weaponId2}`);
            return false;
        }
        
        // 使用精确的形状矩阵比较
        const shape1 = this.extractShapeFromBlock(block1);
        const shape2 = this.extractShapeFromBlock(block2);
        if (!this.compareShapeMatrices(shape1, shape2)) {
            console.log(`[BlockManager] 形状矩阵不匹配`);
            return false;
        }
        
        console.log(`[BlockManager] 方块可以合成: 稀有度=${rarity1}, 种类=${weaponId1}`);
        return true;
    }
    
    // 刷新方块 - 重新生成三个新的武器方块
    public refreshBlocks() {
        // 移除PlacedBlocks容器中所有方块的标签
        if (this.placedBlocksContainer && this.placedBlocksContainer.isValid) {
            BlockTag.removeTagsInContainer(this.placedBlocksContainer);
        }
        
        // 生成新的方块
        this.generateRandomBlocksInKuang();
    }

    // 检查是否有已放置的方块
    public hasPlacedBlocks(): boolean {
        if (!this.placedBlocksContainer || !this.placedBlocksContainer.isValid) {
            console.log('[BlockManager] PlacedBlocks容器无效');
            return false;
        }
        
        const blockCount = this.placedBlocksContainer.children.length;
        console.log(`[BlockManager] 已放置方块数量: ${blockCount}`);
        
        // 检查容器中是否有子节点（方块）
        return blockCount > 0;
    }

    /* =================== 合成逻辑 =================== */

    private readonly rarityOrder: string[] = ['common','uncommon','rare','epic','legendary'];

    /** 检查当前放置的方块能否与相同稀有度的方块合成 */
    private tryMergeBlock(block: Node) {
        const rarity = this.getBlockRarity(block);
        if (!rarity) return;

        // 在 placedBlocksContainer 中寻找与之重叠且可以合成的其他方块
        if (!this.placedBlocksContainer) return;

        const blockBB = this.getWorldAABB(block);
        for (const other of this.placedBlocksContainer.children) {
            if (other === block) continue;
            
            // 使用新的合成检查方法
            if (!this.canMergeBlocks(block, other)) continue;

            const otherBB = this.getWorldAABB(other);
            if (this.rectIntersects(blockBB, otherBB)) {
                // 找到合成目标
                this.performMerge(block, other, rarity);
                break;
            }
        }
    }

    private performMerge(target: Node, source: Node, rarity: string) {
        console.log(`[BlockManager] 开始合成方块: 目标=${target.name}, 源=${source.name}, 稀有度=${rarity}`);
        
        // 隐藏价格标签并处理 db 关联
        this.hidePriceLabel(source);
        const srcDb = source['dbNode'];
        if (srcDb) srcDb.active = false;

        // 销毁被合并方块
        source.destroy();

        // 升级稀有度
        const nextRarity = this.getNextRarity(rarity);
        if (nextRarity) {
            console.log(`[BlockManager] 合成成功，稀有度升级: ${rarity} -> ${nextRarity}`);
            this.setBlockRarityColor(target, nextRarity);
            // 如果有武器配置，也升级
            const cfg = this.blockWeaponConfigs.get(target);
            if (cfg) {
                cfg.rarity = nextRarity;
                this.blockWeaponConfigs.set(target, cfg);
            }
        }

        // 播放烟雾动画
        const worldPos = new Vec3();
        target.getWorldPosition(worldPos);
        this.spawnMergeSmoke(worldPos);

        // 递归检查是否还能继续合成
        if (nextRarity) {
            this.tryMergeBlock(target);
        }
    }

    private getBlockRarity(block: Node): string | null {
        const cfg = this.blockWeaponConfigs.get(block);
        if (cfg) return cfg.rarity;
        // fallback based on sprite color maybe
        return null;
    }

    private getNextRarity(rarity: string): string | null {
        const idx = this.rarityOrder.indexOf(rarity);
        if (idx === -1 || idx >= this.rarityOrder.length - 1) return null;
        return this.rarityOrder[idx + 1];
    }

    private getWorldAABB(node: Node): Rect {
        const ui = node.getComponent(UITransform);
        if (!ui) return new Rect();
        const pos = node.worldPosition;
        const width = ui.width;
        const height = ui.height;
        return new Rect(pos.x - width/2, pos.y - height/2, width, height);
    }

    private rectIntersects(a: Rect, b: Rect): boolean {
        return a.x < b.x + b.width &&
               a.x + a.width > b.x &&
               a.y < b.y + b.height &&
               a.y + a.height > b.y;
    }

    /** 生成烟雾特效 */
    private spawnMergeSmoke(worldPos: Vec3) {
        const path = 'Animation/WeaponTx/tx0003/tx0003';
        resources.load(path, sp.SkeletonData, (err, sData: sp.SkeletonData) => {
            if (err || !sData) {
                console.warn('加载合成烟雾动画失败', err);
                return;
            }
            const node = new Node('MergeSmoke');
            const skeleton = node.addComponent(sp.Skeleton);
            skeleton.skeletonData = sData;
            skeleton.premultipliedAlpha = false;
            skeleton.setAnimation(0, 'animation', false);
            skeleton.setCompleteListener(() => node.destroy());

            const canvas = find('Canvas');
            if (canvas) canvas.addChild(node);
            node.setWorldPosition(worldPos);
        });
    }

    /** 在放置失败时尝试与现有方块进行合成 */
    private tryMergeOnOverlap(draggedBlock: Node): boolean {
        if (!this.placedBlocksContainer) return false;
        const rarity = this.getBlockRarity(draggedBlock);
        if (!rarity) return false;

        const dragBB = this.getWorldAABB(draggedBlock);
        for (const target of this.placedBlocksContainer.children) {
            if (target === draggedBlock) continue;
            
            // 使用新的合成检查方法
            if (!this.canMergeBlocks(draggedBlock, target)) continue;

            const targetBB = this.getWorldAABB(target);
            if (this.rectIntersects(dragBB, targetBB)) {
                // 执行合并：目标保留，拖拽方块销毁
                this.performMerge(target, draggedBlock, rarity);
                return true;
            }
        }
        return false;
    }
    
    onDestroy() {
        // 清理事件监听
        const eventBus = EventBus.getInstance();
        eventBus.off(GameEvents.RESET_BLOCK_MANAGER, this.onResetBlockManagerEvent, this);
    }
}