tanqiu/assets/scripts/CombatSystem/BallController.ts

import { _decorator, Component, Node, Vec2, Vec3, UITransform, Collider2D, Contact2DType, IPhysics2DContact, RigidBody2D, Prefab, instantiate, find, CircleCollider2D } from 'cc';
import { PhysicsManager } from '../Core/PhysicsManager';
import { WeaponBullet, BulletInitData, WeaponConfig } from './WeaponBullet';
import { EnemyController } from './EnemyController';
const { ccclass, property } = _decorator;

@ccclass('BallController')
export class BallController extends Component {
    // 球的预制体
    @property({
        type: Prefab,
        tooltip: '拖拽Ball预制体到这里'
    })
    public ballPrefab: Prefab = 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;

    // 球的移动速度
    @property
    public speed: number = 60;

    // 反弹随机偏移最大角度（弧度）
    @property
    public maxReflectionRandomness: number = 0.2;
    
    // 当前活动的球
    private activeBall: Node = null;

    // 球的方向向量
    private direction: Vec2 = new Vec2();
    
    // GameArea区域边界
    private gameBounds = {
        left: 0,
        right: 0,
        top: 0,
        bottom: 0
    };

    // 球的半径
    private radius: number = 0;

    // 是否已初始化
    private initialized: boolean = false;
    
    // 子弹预制体
    @property({
        type: Prefab,
        tooltip: '拖拽子弹预制体到这里'
    })
    public bulletPrefab: Prefab = null;

    // 小球是否已开始运动
    private ballStarted: boolean = false;

    // 小球暂停时记录的速度
    private pausedVelocity: Vec2 = new Vec2();

    // 标记是否处于暂停状态
    private isPaused: boolean = false;

    // 在类字段区添加
    private blockFireCooldown: Map<string, number> = new Map();
    private FIRE_COOLDOWN = 0.05;

    // 带尾部特效的子弹容器预制体
    @property({
        type: Prefab,
        tooltip: '拖拽带尾部特效的子弹容器预制体到这里（例如 PelletContainer）'
    })
    public bulletContainerPrefab: Prefab = null;

    start() {
        // 如果没有指定placedBlocksContainer，尝试找到它
        if (!this.placedBlocksContainer) {
            this.placedBlocksContainer = find('Canvas/GameLevelUI/PlacedBlocks');
            if (!this.placedBlocksContainer) {
                // 找不到PlacedBlocks节点，某些功能可能无法正常工作
            }
        }
        
        // 只进行初始设置，不创建小球
        this.calculateGameBounds();
        
        // 延迟执行一些检查方法，但不创建小球
        this.scheduleOnce(() => {
            this.logCollisionMatrix();
        }, 1.0);
    }

    // 计算游戏边界（使用GameArea节点）
    calculateGameBounds() {
        // 获取GameArea节点
        const gameArea = find('Canvas/GameLevelUI/GameArea');
        if (!gameArea) {
            return;
        }

        const gameAreaUI = gameArea.getComponent(UITransform);
        if (!gameAreaUI) {
            return;
        }

        // 获取GameArea的尺寸
        const areaWidth = gameAreaUI.width;
        const areaHeight = gameAreaUI.height;
        
        // 获取GameArea的世界坐标位置
        const worldPos = gameArea.worldPosition;

        // 计算GameArea的世界坐标边界
        this.gameBounds.left = worldPos.x - areaWidth / 2;
        this.gameBounds.right = worldPos.x + areaWidth / 2;
        this.gameBounds.bottom = worldPos.y - areaHeight / 2;
        this.gameBounds.top = worldPos.y + areaHeight / 2;
        
    }

    // 创建小球
    createBall() {
        if (!this.ballPrefab) {
            return;
        }

        // 如果已经有活动的球，先销毁它
        if (this.activeBall && this.activeBall.isValid) {
            this.activeBall.destroy();
        }

        // 实例化小球
        this.activeBall = instantiate(this.ballPrefab);
        
        // 将小球添加到GameArea中
        const gameArea = find('Canvas/GameLevelUI/GameArea');
        if (gameArea) {
            gameArea.addChild(this.activeBall);
        } else {
            this.node.addChild(this.activeBall);
        }

        // 随机位置小球
        this.positionBallRandomly();

        // 设置球的半径
        const transform = this.activeBall.getComponent(UITransform);
        if (transform) {
            this.radius = transform.width / 2;
        } else {
            this.radius = 25; // 默认半径
        }

        // 确保有碰撞组件
        this.setupCollider();

        // 注意：不在这里初始化方向，等待 startBall() 调用

        this.initialized = true;
    }


    // 为指定节点随机定位
    private positionBallRandomlyForNode(ballNode: Node) {
        const transform = ballNode.getComponent(UITransform);
        const ballRadius = transform ? transform.width / 2 : 25;
        
        // 计算可生成的范围
        const minX = this.gameBounds.left + ballRadius + 20;
        const maxX = this.gameBounds.right - ballRadius - 20;
        const minY = this.gameBounds.bottom + ballRadius + 20;
        const maxY = this.gameBounds.top - ballRadius - 20;

        // 随机生成位置
        const randomX = Math.random() * (maxX - minX) + minX;
        const randomY = Math.random() * (maxY - minY) + minY;

        // 将世界坐标转换为相对于GameArea的本地坐标
        const gameArea = find('Canvas/GameLevelUI/GameArea');
        if (gameArea) {
            const localPos = gameArea.getComponent(UITransform).convertToNodeSpaceAR(new Vec3(randomX, randomY, 0));
            ballNode.position = localPos;
        }
    }

    // 为指定小球设置碰撞组件
    private setupColliderForBall(ballNode: Node, ballRadius: number) {
        // 确保小球有刚体组件
        let rigidBody = ballNode.getComponent(RigidBody2D);
        if (!rigidBody) {
            rigidBody = ballNode.addComponent(RigidBody2D);
            rigidBody.type = 2; // Dynamic
            rigidBody.gravityScale = 0;
            rigidBody.enabledContactListener = true;
            rigidBody.fixedRotation = true;
            rigidBody.allowSleep = false;
            rigidBody.linearDamping = 0;
            rigidBody.angularDamping = 0;
        }

        // 确保小球有碰撞组件
        let collider = ballNode.getComponent(CircleCollider2D);
        if (!collider) {
            collider = ballNode.addComponent(CircleCollider2D);
            collider.radius = ballRadius;
            collider.tag = 1;
            collider.group = 1;
            collider.sensor = false;
            collider.friction = 0;
            collider.restitution = 1;
        }

        // 设置碰撞监听
        const physics = PhysicsManager.getInstance()?.getSystem();
        if (physics) {
            physics.on(Contact2DType.BEGIN_CONTACT, this.onBeginContact, this);
            physics.on(Contact2DType.END_CONTACT, this.onEndContact, this);
            physics.on(Contact2DType.PRE_SOLVE, this.onPreSolve, this);
            physics.on(Contact2DType.POST_SOLVE, this.onPostSolve, this);
        }
    }

    // 启动指定小球的运动
    private startBallMovement(ballNode: Node) {
        const rigidBody = ballNode.getComponent(RigidBody2D);
        if (rigidBody) {
            // 随机初始方向
            const angle = Math.random() * Math.PI * 2;
            const direction = new Vec2(Math.cos(angle), Math.sin(angle));
            
            rigidBody.linearVelocity = new Vec2(
                direction.x * this.speed,
                direction.y * this.speed
            );
        }
    }

    // 检查所有已放置方块的碰撞体组件
    private checkBlockColliders() {
        
        if (!this.placedBlocksContainer) {
            return;
        }
        
        if (!this.placedBlocksContainer.isValid) {
            return;
        }
        
        const blocks = [];
        for (let i = 0; i < this.placedBlocksContainer.children.length; i++) {
            const block = this.placedBlocksContainer.children[i];
            if (block.name.includes('Block') || block.getChildByName('B1')) {
                blocks.push(block);
            }
        }
        
        let fixedCount = 0;
        
        for (let i = 0; i < blocks.length; i++) {
            const block = blocks[i];
            
            // 检查方块本身的碰撞体
            const blockCollider = block.getComponent(Collider2D);
            if (blockCollider) {
                // 🔧 自动修复碰撞组设置
                if (blockCollider.group !== 2) {
                    blockCollider.group = 2; // 设置为Block组
                    fixedCount++;
                }
                
                // 确保不是传感器
                if (blockCollider.sensor) {
                    blockCollider.sensor = false;
                }
            }
            
            // 检查B1子节点的碰撞体
            const b1Node = block.getChildByName('B1');
            if (b1Node) {
                const b1Collider = b1Node.getComponent(Collider2D);
                if (b1Collider) {
                    // 🔧 修复B1子节点的碰撞设置
                    if (b1Collider.group !== 2) {
                        b1Collider.group = 2; // 设置为Block组
                        fixedCount++;
                    }
                    
                    // 确保B1不是传感器（需要实际碰撞）
                    if (b1Collider.sensor) {
                        b1Collider.sensor = false;
                    }
                }
            }
            
            // 检查Weapon子节点
            const weaponNode = this.findWeaponNode(block);
            if (weaponNode) {
                // 武器节点存在
            }
        }
    }

    // 随机位置小球
    positionBallRandomly() {
        if (!this.activeBall) return;

        const transform = this.activeBall.getComponent(UITransform);
        const ballRadius = transform ? transform.width / 2 : 25;
        
        // 计算可生成的范围（考虑小球半径，避免生成在边缘）
        const minX = this.gameBounds.left + ballRadius + 20; // 额外偏移，避免生成在边缘
        const maxX = this.gameBounds.right - ballRadius - 20;
        const minY = this.gameBounds.bottom + ballRadius + 20;
        const maxY = this.gameBounds.top - ballRadius - 20;

        // 获取GameArea节点
        const gameArea = find('Canvas/GameLevelUI/GameArea');
        if (!gameArea) {
            return;
        }
        
        // 查找PlacedBlocks节点，它包含所有放置的方块
        if (!this.placedBlocksContainer) {
            this.setRandomPositionDefault(minX, maxX, minY, maxY);
            return;
        }
        
        if (!this.placedBlocksContainer.isValid) {
            this.setRandomPositionDefault(minX, maxX, minY, maxY);
            return;
        }
        
        // 获取所有已放置的方块
        const placedBlocks = [];
        for (let i = 0; i < this.placedBlocksContainer.children.length; i++) {
            const block = this.placedBlocksContainer.children[i];
            // 检查是否是方块节点（通常以Block命名或有特定标识）
            if (block.name.includes('Block') || block.getChildByName('B1')) {
                placedBlocks.push(block);
            }
        }
        
        // 如果没有方块，使用默认随机位置
        if (placedBlocks.length === 0) {
            this.setRandomPositionDefault(minX, maxX, minY, maxY);
            return;
        }
        
        // 尝试找到一个不与任何方块重叠的位置
        let validPosition = false;
        let attempts = 0;
        const maxAttempts = 50; // 最大尝试次数
        let randomX, randomY;
        
        while (!validPosition && attempts < maxAttempts) {
            // 随机生成位置
            randomX = Math.random() * (maxX - minX) + minX;
            randomY = Math.random() * (maxY - minY) + minY;
            
            // 检查是否与任何方块重叠
            let overlapping = false;
            for (const block of placedBlocks) {
                // 获取方块的世界坐标
                const blockWorldPos = block.worldPosition;
                
                // 计算小球与方块的距离
                const distance = Math.sqrt(
                    Math.pow(randomX - blockWorldPos.x, 2) + 
                    Math.pow(randomY - blockWorldPos.y, 2)
                );
                
                // 获取方块的尺寸
                const blockTransform = block.getComponent(UITransform);
                const blockSize = blockTransform ? 
                    Math.max(blockTransform.width, blockTransform.height) / 2 : 50;
                
                // 如果距离小于小球半径+方块尺寸的一半+安全距离，认为重叠
                const safeDistance = 20; // 额外安全距离
                if (distance < ballRadius + blockSize + safeDistance) {
                    overlapping = true;
                    break;
                }
            }
            
            // 如果没有重叠，找到了有效位置
            if (!overlapping) {
                validPosition = true;
            }
            
            attempts++;
        }
        
        // 如果找不到有效位置，使用默认位置（游戏区域底部中心）
        if (!validPosition) {
            randomX = (this.gameBounds.left + this.gameBounds.right) / 2;
            randomY = this.gameBounds.bottom + ballRadius + 50; // 底部上方50单位
        }
        
        // 将世界坐标转换为相对于GameArea的本地坐标
        const localPos = gameArea.getComponent(UITransform).convertToNodeSpaceAR(new Vec3(randomX, randomY, 0));
        this.activeBall.position = localPos;
    }

    // 设置默认随机位置
    setRandomPositionDefault(minX, maxX, minY, maxY) {
        // 随机生成位置
        const randomX = Math.random() * (maxX - minX) + minX;
        const randomY = Math.random() * (maxY - minY) + minY;

        // 将世界坐标转换为相对于GameArea的本地坐标
        const gameArea = find('Canvas/GameLevelUI/GameArea');
        if (gameArea) {
            const localPos = gameArea.getComponent(UITransform).convertToNodeSpaceAR(new Vec3(randomX, randomY, 0));
            this.activeBall.position = localPos;
        } else {
            // 直接设置位置（不太准确，但作为后备）
            this.activeBall.position = new Vec3(randomX - this.gameBounds.left, randomY - this.gameBounds.bottom, 0);
        }
    }

    // 设置碰撞组件
    setupCollider() {
        if (!this.activeBall) return;

        // 确保小球有刚体组件
        let rigidBody = this.activeBall.getComponent(RigidBody2D);
        if (!rigidBody) {
            rigidBody = this.activeBall.addComponent(RigidBody2D);
            rigidBody.type = 2; // Dynamic
            rigidBody.gravityScale = 0; // 不受重力影响
            rigidBody.enabledContactListener = true; // 启用碰撞监听
            rigidBody.fixedRotation = true; // 固定旋转
            rigidBody.allowSleep = false; // 不允许休眠
            rigidBody.linearDamping = 0; // 无线性阻尼，保持速度不衰减
            rigidBody.angularDamping = 0; // 无角阻尼
        } else {
            // 确保已有的刚体组件设置正确
            rigidBody.enabledContactListener = true;
            rigidBody.gravityScale = 0;
            rigidBody.linearDamping = 0; // 确保无线性阻尼，保持速度不衰减
            rigidBody.angularDamping = 0; // 确保无角阻尼
            rigidBody.allowSleep = false; // 不允许休眠
        }

        // 确保小球有碰撞组件
        let collider = this.activeBall.getComponent(CircleCollider2D);
        if (!collider) {
            collider = this.activeBall.addComponent(CircleCollider2D);
            collider.radius = this.radius || 25; // 使用已计算的半径或默认值
            collider.tag = 1; // 小球标签
            collider.group = 1; // 碰撞组1 - Ball组
            collider.sensor = false; // 非传感器（实际碰撞）
            collider.friction = 0; // 无摩擦
            collider.restitution = 1; // 完全弹性碰撞
        } else {
            // 确保已有的碰撞组件设置正确
            collider.sensor = false;
            collider.restitution = 1;
            collider.group = 1; // 确保是Ball组
            collider.tag = 1; // 确保标签正确
        }

        // === 使用全局回调监听器 ===
        const physics = PhysicsManager.getInstance()?.getSystem();
        if (physics) {
            // 先移除旧监听，避免重复注册
            physics.off(Contact2DType.BEGIN_CONTACT, this.onBeginContact, this);
            physics.off(Contact2DType.END_CONTACT, this.onEndContact, this);
            physics.off(Contact2DType.PRE_SOLVE, this.onPreSolve, this);
            physics.off(Contact2DType.POST_SOLVE, this.onPostSolve, this);

            physics.on(Contact2DType.BEGIN_CONTACT, this.onBeginContact, this);
            physics.on(Contact2DType.END_CONTACT, this.onEndContact, this);
            physics.on(Contact2DType.PRE_SOLVE, this.onPreSolve, this);
            physics.on(Contact2DType.POST_SOLVE, this.onPostSolve, this);
        }
    }

    // 碰撞回调 - 简化版本用于测试
    onBeginContact(selfCollider: Collider2D, otherCollider: Collider2D, contact: IPhysics2DContact | null) {
        // Debug logs removed
        
        // 判断是否有敌人，若无则不产生子弹
        const enemyController = EnemyController.getInstance();
        if (!enemyController || !enemyController.hasActiveEnemies()) {
            return;
        }
        
        // 判断哪个是小球，哪个是方块
        let ballNode: Node = null;
        let blockNode: Node = null;
        
        // 检查self是否为小球（组1）
        if (selfCollider.group === 1) {
            ballNode = selfCollider.node;
            blockNode = otherCollider.node;
        } 
        // 检查other是否为小球（组1）
        else if (otherCollider.group === 1) {
            ballNode = otherCollider.node;
            blockNode = selfCollider.node;
        }
        
        // 如果没有找到小球，跳过处理
        if (!ballNode || !blockNode) {
            // Debug log removed
            return;
        }
        
        // 检查碰撞对象是否为方块
        const nodeName = blockNode.name;
        const nodePath = this.getNodePath(blockNode);
        
        // 检查是否有Weapon子节点（判断是否为方块）
        const hasWeaponChild = blockNode.getChildByName('Weapon') !== null;
        const isBlock = 
            nodeName.includes('Block') || 
            nodePath.includes('Block') ||
            hasWeaponChild;
            
        if (isBlock) {
            // trigger bullet without verbose logging
            // 计算碰撞世界坐标，默认用接触点
            let contactPos: Vec3 = null;
            if (contact && (contact as any).getWorldManifold) {
                const wm = (contact as any).getWorldManifold();
                if (wm && wm.points && wm.points.length > 0) {
                    contactPos = new Vec3(wm.points[0].x, wm.points[0].y, 0);
                }
            }
            if (!contactPos) {
                contactPos = blockNode.worldPosition.clone();
            }

            const now = performance.now();
            const lastTime = this.blockFireCooldown.get(blockNode.uuid) || 0;
            if (now - lastTime > this.FIRE_COOLDOWN * 1000) {
                this.blockFireCooldown.set(blockNode.uuid, now);
                this.fireBulletAt(blockNode, contactPos);
            }
        }
    }

    // 碰撞结束事件 - 简化版本
    onEndContact(selfCollider: Collider2D, otherCollider: Collider2D, contact: IPhysics2DContact | null) {
        // Debug log removed
    }
    
    // 碰撞预处理事件 - 简化版本
    onPreSolve(selfCollider: Collider2D, otherCollider: Collider2D, contact: IPhysics2DContact | null) {
        // console.log('⚙️ 碰撞预处理:', otherCollider.node.name);
    }
    
    // 碰撞后处理事件 - 简化版本
    onPostSolve(selfCollider: Collider2D, otherCollider: Collider2D, contact: IPhysics2DContact | null) {
        // console.log('✅ 碰撞后处理:', otherCollider.node.name);
    }

    // 计算反射向量
    calculateReflection(direction: Vec2, normal: Vec2): Vec2 {
        // 使用反射公式: R = V - 2(V·N)N
        const dot = direction.x * normal.x + direction.y * normal.y;
        const reflection = new Vec2(
            direction.x - 2 * dot * normal.x,
            direction.y - 2 * dot * normal.y
        );
        reflection.normalize();
        
        // 添加一些随机性，避免重复的反弹路径
        const randomAngle = (Math.random() - 0.5) * this.maxReflectionRandomness; // 随机角度
        const cos = Math.cos(randomAngle);
        const sin = Math.sin(randomAngle);
        
        // 应用随机旋转
        const randomizedReflection = new Vec2(
            reflection.x * cos - reflection.y * sin,
            reflection.x * sin + reflection.y * cos
        );
        
        // 确保反射方向不会太接近水平或垂直方向
        // 这有助于避免球在水平或垂直方向上来回反弹
        const minAngleFromAxis = 0.1; // 约5.7度
        
        // 检查是否接近水平方向
        if (Math.abs(randomizedReflection.y) < minAngleFromAxis) {
            // 调整y分量，使其远离水平方向
            const sign = randomizedReflection.y >= 0 ? 1 : -1;
            randomizedReflection.y = sign * (minAngleFromAxis + Math.random() * 0.1);
            // 重新归一化
            randomizedReflection.normalize();
        }
        
        // 检查是否接近垂直方向
        if (Math.abs(randomizedReflection.x) < minAngleFromAxis) {
            // 调整x分量，使其远离垂直方向
            const sign = randomizedReflection.x >= 0 ? 1 : -1;
            randomizedReflection.x = sign * (minAngleFromAxis + Math.random() * 0.1);
            // 重新归一化
            randomizedReflection.normalize();
        }
        
        randomizedReflection.normalize();
        // Debug log removed
        
        return randomizedReflection;
    }

    /**
     * 从方块武器发射子弹攻击敌人 - 重构版本
     * 现在直接创建子弹实例并使用BulletController的实例方法
     * @param blockNode 激活的方块节点
     */
    fireBullet(blockNode: Node) {
        // Debug logs removed
        
        // 检查子弹预制体是否存在
        if (!this.bulletPrefab) {
            return;
        }        
        
        // 查找方块中的Weapon节点
        const weaponNode = this.findWeaponNode(blockNode);
        if (!weaponNode) {
            const blockWorldPos = blockNode.worldPosition;
            const weaponConfig2: WeaponConfig | null = (blockNode as any)['weaponConfig'] || null;
            this.createAndFireBullet(blockWorldPos, weaponConfig2);
            return;
        }
        
        // 获取武器的世界坐标作为发射位置
        let firePosition: Vec3;
        try {
            firePosition = weaponNode.worldPosition;
        } catch (error) {
            // 备用方案：使用方块坐标
            firePosition = blockNode.worldPosition;
        }
        
        // 创建并发射子弹
        const weaponConfig: WeaponConfig | null = (blockNode as any)['weaponConfig'] || null;
        this.createAndFireBullet(firePosition, weaponConfig);
    }
    
    /**
     * 创建并发射子弹 - 使用新的WeaponBullet系统
     * @param firePosition 发射位置（世界坐标）
     * @param weaponConfig 武器配置
     */
    private createAndFireBullet(firePosition: Vec3, weaponConfig: WeaponConfig | null) {
        
        // 确保武器配置加载
        WeaponBullet.loadWeaponsData().then(() => {
            // 默认使用毛豆射手配置，后续可以根据方块类型动态选择
            const defaultWeaponId = 'pea_shooter';
            const finalConfig = weaponConfig || WeaponBullet.getWeaponConfig(defaultWeaponId);
            
            if (!finalConfig) {
                return;
            }
            
            // 创建子弹初始化数据
            const initData: BulletInitData = {
                weaponId: finalConfig.id,
                firePosition: firePosition,
                autoTarget: true,
                weaponConfig: finalConfig
            };
            
            // 验证初始化数据
            if (!WeaponBullet.validateInitData(initData)) {
                return;
            }
            
            // 判断是否为多发子弹（散射/连发等）
            const countCfg = finalConfig.bulletConfig.count;
            const isMultiShot = countCfg && countCfg.type !== 'single' && countCfg.amount > 1;

            // 查找GameArea（子弹统一添加到此节点）
            const gameArea = find('Canvas/GameLevelUI/GameArea');
            if (!gameArea) {
                return;
            }

            // === 根据武器配置选择合适的预制体 ===
            const needsTrail = !!(finalConfig.bulletConfig?.visual?.trailEffect);
            const prefabToUse: Prefab = (needsTrail && this.bulletContainerPrefab) ? this.bulletContainerPrefab : this.bulletPrefab;
            if (!prefabToUse) {
                return; // 如果没有可用的预制体则直接退出
            }

            if (isMultiShot) {
                // 使用批量创建逻辑
                const bullets = WeaponBullet.createBullets(initData, prefabToUse as any);
                bullets.forEach(b => {
                    gameArea.addChild(b);
                });
            } else {
                // 单发逻辑（沿用原流程）
                const bullet = instantiate(prefabToUse);
                if (!bullet) {
                    return;
                }

                gameArea.addChild(bullet);

                let weaponBullet = bullet.getComponent(WeaponBullet);
                if (!weaponBullet) {
                    weaponBullet = bullet.addComponent(WeaponBullet);
                }

                weaponBullet.init(initData);
            }
            
        }).catch(error => {
            // 武器配置加载失败
        });
    }
    
    // 递归查找Weapon节点
    private findWeaponNode(node: Node): Node | null {
        // logs removed
        
        // 先检查当前节点是否有Weapon子节点
        const weaponNode = node.getChildByName('Weapon');
        if (weaponNode) {
            return weaponNode;
        }
        
        // 如果没有，递归检查所有子节点
        for (let i = 0; i < node.children.length; i++) {
            const child = node.children[i];
            const foundWeapon = this.findWeaponNode(child);
            if (foundWeapon) {
                return foundWeapon;
            }
        }
        
        // 如果都没找到，返回null
        return null;
    }

    // 辅助方法：打印节点结构
    private logNodeStructure(node: Node, depth: number) {
        const indent = '  '.repeat(depth);
        for (let i = 0; i < node.children.length; i++) {
            this.logNodeStructure(node.children[i], depth + 1);
        }
    }

    // 获取节点的完整路径
    private getNodePath(node: Node): string {
        let path = node.name;
        let current = node;
        
        while (current.parent) {
            current = current.parent;
            path = current.name + '/' + path;
        }
        
        return path;
    }

    update(dt: number) {
        // 只有当小球已启动时才执行运动逻辑
        if (!this.ballStarted || !this.initialized || !this.activeBall || !this.activeBall.isValid) {
            return;
        }
        
        // 使用刚体组件控制小球移动，而不是直接设置位置
        const rigidBody = this.activeBall.getComponent(RigidBody2D);
        if (rigidBody) {
            // 获取当前速度并确保方向向量与实际速度方向一致
            const currentVelocity = rigidBody.linearVelocity;
            const speed = Math.sqrt(currentVelocity.x * currentVelocity.x + currentVelocity.y * currentVelocity.y);
            
            // 确保方向向量与实际速度方向一致
            if (speed > 1.0) {
                this.direction.x = currentVelocity.x / speed;
                this.direction.y = currentVelocity.y / speed;
            }
            
            // 如果速度过低，重新设置速度以维持恒定运动
            if (speed < this.speed * 0.9) {
                rigidBody.linearVelocity = new Vec2(
                    this.direction.x * this.speed,
                    this.direction.y * this.speed
                );
            }
            
            // 定期检查小球是否接近方块但没有触发碰撞（调试用）
            this.debugCheckNearBlocks();
        }
    }
    
    // 调试方法：检查小球是否接近方块但没有触发物理碰撞
    private debugCheckCounter = 0;
    private debugCheckNearBlocks() {
        this.debugCheckCounter++;
        // 每60帧（约1秒）检查一次
        if (this.debugCheckCounter % 60 !== 0) return;
        
        const ballPos = this.activeBall.worldPosition;
        if (!this.placedBlocksContainer || !this.placedBlocksContainer.isValid) return;
        
        let nearestDistance = Infinity;
        let nearestBlock = null;
        
        for (let i = 0; i < this.placedBlocksContainer.children.length; i++) {
            const block = this.placedBlocksContainer.children[i];
            if (block.name.includes('Block') || block.getChildByName('B1')) {
                const blockPos = block.worldPosition;
                const distance = Math.sqrt(
                    Math.pow(ballPos.x - blockPos.x, 2) + 
                    Math.pow(ballPos.y - blockPos.y, 2)
                );
                
                if (distance < nearestDistance) {
                    nearestDistance = distance;
                    nearestBlock = block;
                }
            }
        }
        
        if (nearestBlock && nearestDistance < 100) {
            // 检查小球的碰撞体状态
            const ballCollider = this.activeBall.getComponent(Collider2D);
            if (ballCollider) {
                if (ballCollider instanceof CircleCollider2D) {
                    // 小球碰撞半径检查
                }
            }
            
            // 检查小球的刚体状态
            const ballRigidBody = this.activeBall.getComponent(RigidBody2D);
            if (ballRigidBody) {
                // 刚体状态检查
            }
            
            // 检查最近的方块碰撞体
            const blockCollider = nearestBlock.getComponent(Collider2D);
            if (blockCollider) {
                // 方块碰撞体检查
            }
        }
    }
    
    // 检查碰撞矩阵
    private checkCollisionMatrix(group1: number, group2: number): boolean {
        // 根据项目配置检查碰撞矩阵
        // "collisionMatrix": { "0": 3, "1": 39, "2": 6, "3": 16, "4": 40, "5": 18 }
        const collisionMatrix: { [key: string]: number } = {
            "0": 3,
            "1": 39,
            "2": 6,
            "3": 16,
            "4": 40,
            "5": 18
        };
        
        const mask1 = collisionMatrix[group1.toString()];
        const mask2 = collisionMatrix[group2.toString()];
        
        // 检查group1是否能与group2碰撞
        const canCollide1to2 = mask1 && (mask1 & (1 << group2)) !== 0;
        // 检查group2是否能与group1碰撞
        const canCollide2to1 = mask2 && (mask2 & (1 << group1)) !== 0;
        
        return canCollide1to2 && canCollide2to1;
    }

    // 初始化方向
    initializeDirection() {
        // 随机初始方向
        const angle = Math.random() * Math.PI * 2; // 0-2π之间的随机角度
        this.direction.x = Math.cos(angle);
        this.direction.y = Math.sin(angle);
        this.direction.normalize();
        
        // 设置初始速度
        if (this.activeBall) {
            const rigidBody = this.activeBall.getComponent(RigidBody2D);
            if (rigidBody) {
                rigidBody.linearVelocity = new Vec2(
                    this.direction.x * this.speed,
                    this.direction.y * this.speed
                );
            }
        }
    }

    // 初始化球的参数 - 公开方法，供GameManager调用
    public initialize() {
        this.calculateGameBounds();
        this.createBall();
        
        // 检查方块碰撞体（延迟执行，确保方块已放置）
        this.scheduleOnce(() => {
            this.checkBlockColliders();
        }, 0.5);
    }
    
    // 启动小球 - 公开方法，在确定按钮点击后调用
    public startBall() {
        
        // 如果还没有初始化，先初始化
        if (!this.initialized) {
            this.initialize();
        }
        
        // 确保小球存在且有效
        if (!this.activeBall || !this.activeBall.isValid) {
            this.createBall();
        }
        
        // 重新定位小球，避免与方块重叠
        this.positionBallRandomly();
        
        // 确保物理组件设置正确
        this.setupCollider();
        
        // 初始化运动方向并开始运动
        this.initializeDirection();
        
        // 设置运动状态
        this.ballStarted = true;
    }

    /**
     * 暂停小球运动：记录当前速度并停止刚体
     */
    public pauseBall() {
        if (this.isPaused) return;
        this.isPaused = true;
        this.ballStarted = false;

        if (this.activeBall && this.activeBall.isValid) {
            const rb = this.activeBall.getComponent(RigidBody2D);
            if (rb) {
                this.pausedVelocity = rb.linearVelocity.clone();
                rb.linearVelocity = new Vec2(0, 0);
                rb.sleep();
            }
        }
    }

    /**
     * 恢复小球运动：恢复暂停前的速度
     */
    public resumeBall() {
        if (!this.isPaused) return;
        this.isPaused = false;
        this.ballStarted = true;
        console.log('恢复小球运动');
        if (this.activeBall && this.activeBall.isValid) {
            const rb = this.activeBall.getComponent(RigidBody2D);
            if (rb) {
                rb.wakeUp();
                const hasPrevVelocity = this.pausedVelocity && (this.pausedVelocity.x !== 0 || this.pausedVelocity.y !== 0);
                if (hasPrevVelocity) {
                    rb.linearVelocity = this.pausedVelocity.clone();
                } else {
                    // 若没有记录速度，则重新初始化方向
                    this.initializeDirection();
                }
            }
        }
    }

    // 输出碰撞矩阵调试信息
    private logCollisionMatrix() {
        // 根据项目配置检查碰撞矩阵
        // "collisionMatrix": { "0": 3, "1": 39, "2": 6, "3": 16, "4": 40, "5": 18 }
        const collisionMatrix: { [key: string]: number } = {
            "0": 3,
            "1": 39,
            "2": 6,
            "3": 16,
            "4": 40,
            "5": 18
        };
        
        // 测试Ball组(1)和Block组(2)是否能碰撞
        const ballMask = collisionMatrix["1"]; // 39
        const blockMask = collisionMatrix["2"]; // 6
        
        const ballCanCollideWithBlock = (ballMask & (1 << 2)) !== 0; // 检查Ball能否与组2碰撞
        const blockCanCollideWithBall = (blockMask & (1 << 1)) !== 0; // 检查Block能否与组1碰撞
    }

    /**
     * 从给定世界坐标发射子弹
     */
    private fireBulletAt(blockNode: Node, fireWorldPos: Vec3) {
        
        // 检查子弹预制体是否存在
        if (!this.bulletPrefab) {
            return;
        }        
        
        // 直接使用碰撞世界坐标作为发射点
        const weaponConfig: WeaponConfig | null = (blockNode as any)['weaponConfig'] || null;
        this.createAndFireBullet(fireWorldPos, weaponConfig);
    }
}