tanqiu/assets/scripts/CombatSystem/BulletTrailController.ts

import { _decorator, Component, Node, MotionStreak, Color, Texture2D } from 'cc';
const { ccclass, property } = _decorator;

/**
 * 子弹拖尾控制器
 * 负责管理子弹的拖尾效果
 */
@ccclass('BulletTrailController')
export class BulletTrailController extends Component {
    
    @property({
        type: MotionStreak,
        tooltip: '拖尾组件引用'
    })
    public motionStreak: MotionStreak | null = null;
    
    // 拖尾配置
    private trailConfig = {
        fadeTime: 0.5,      // 拖尾消失时间
        minSeg: 1,          // 最小分段
        stroke: 30,         // 拖尾宽度
        fastMode: false     // 快速模式
    };
    
    // 预设颜色
    private trailColors = {
        default: new Color(255, 255, 0, 255),    // 黄色
        white: new Color(255, 255, 255, 255),    // 白色
        fire: new Color(255, 100, 0, 255),       // 橙红色
        ice: new Color(0, 200, 255, 255),        // 冰蓝色
        poison: new Color(100, 255, 0, 255),     // 毒绿色
        electric: new Color(200, 0, 255, 255)    // 紫色
    };
    
    onLoad() {
        this.initializeTrail();
    }
    
    /**
     * 初始化拖尾效果
     */
    private initializeTrail() {
        if (!this.motionStreak) {
            // 尝试从子节点中查找MotionStreak组件
            this.motionStreak = this.getComponentInChildren(MotionStreak);
            
            if (!this.motionStreak) {
                // 尝试从当前节点获取
                this.motionStreak = this.getComponent(MotionStreak);
            }
        }
        
        if (this.motionStreak) {
            this.applyTrailConfig();
        }
    }
    
    /**
     * 应用拖尾配置
     */
    private applyTrailConfig() {
        if (!this.motionStreak) return;
        
        this.motionStreak.fadeTime = this.trailConfig.fadeTime;
        this.motionStreak.minSeg = this.trailConfig.minSeg;
        this.motionStreak.stroke = this.trailConfig.stroke;
        this.motionStreak.fastMode = this.trailConfig.fastMode;
        this.motionStreak.color = this.trailColors.white;
    }
    
    /**
     * 设置拖尾颜色
     * @param colorType 颜色类型
     */
    public setTrailColor(colorType: 'default' | 'white' | 'fire' | 'ice' | 'poison' | 'electric') {
        if (!this.motionStreak) return;
        
        const color = this.trailColors[colorType];
        if (color) {
            this.motionStreak.color = color;
        }
    }
    
    /**
     * 设置自定义拖尾颜色
     * @param color 颜色
     */
    public setCustomTrailColor(color: Color) {
        if (!this.motionStreak) return;
        
        this.motionStreak.color = color;
    }
    
    /**
     * 设置拖尾宽度
     * @param width 宽度
     */
    public setTrailWidth(width: number) {
        if (!this.motionStreak) return;
        
        this.trailConfig.stroke = width;
        this.motionStreak.stroke = width;
    }
    
    /**
     * 设置拖尾消失时间
     * @param fadeTime 消失时间
     */
    public setTrailFadeTime(fadeTime: number) {
        if (!this.motionStreak) return;
        
        this.trailConfig.fadeTime = fadeTime;
        this.motionStreak.fadeTime = fadeTime;
    }
    
    /**
     * 设置拖尾纹理
     * @param texture 纹理
     */
    public setTrailTexture(texture: Texture2D) {
        if (!this.motionStreak) return;
        
        this.motionStreak.texture = texture;
    }
    
    /**
     * 启用拖尾效果
     */
    public enableTrail() {
        if (this.motionStreak) {
            this.motionStreak.enabled = true;
        }
    }
    
    /**
     * 禁用拖尾效果
     */
    public disableTrail() {
        if (this.motionStreak) {
            this.motionStreak.enabled = false;
        }
    }
    
    /**
     * 重置拖尾效果
     */
    public resetTrail() {
        if (this.motionStreak) {
            this.motionStreak.reset();
        }
    }

    onDestroy() {
        // 清理资源
        this.motionStreak = null;
    }
}