import gameUI from "../game/UIFace/gameUI";
const {ccclass, property} = cc._decorator;

@ccclass
export default class path3 extends cc.Component {

    private anim: cc.Animation = null;
    private path3data: cc.Vec3[] = [];
    public static instance: path3 = null;
    onLoad() {
        path3.instance = this;
        //获取当前节点上的动画组件
        this.anim = this.node.getComponent(cc.Animation);
        // this.anim.play("path3_1");
    }

    /**编辑路径 */
    public changeLevelData(): void {
        this.path3data = [];
        if (this.anim == null) {
            return;
        }
        //获取动画片段
        let clips = this.anim.getClips();
        //获取当前片段
        let clip = clips[gameUI.instance.myDataObj.LevelData.scene_path - 1];
        if (clip) {
            //获取贝塞尔曲线路径
            let frames = clip.curveData.props.position;
            this.genpath3Data(frames);
        }

    }


    private genpath3Data(frames): void {
        let bezier = [];
        //贝塞尔曲线定义四个点：起点、终点、两个相互分离中间控制点点 [begin, ctrl1, ctrl2, end]
        let begin = null, ctrl1 = null, ctrl2 = null, end = null;
        //遍历关键帧获取贝塞尔曲线
        for (let i = 0; i < frames.length; i++) {
            const frame = frames[i];
            //获取控制起点
            if (ctrl1 !== null) {
                bezier.push([begin, ctrl1, ctrl1, cc.v3(frame.value[0], frame.value[1])]);
            }
            //获取起点坐标
            begin = cc.v3(frame.value[0], frame.value[1]);
            //获取关键帧的运动路径
            const motionPath = frame.motionPath;
            //遍历关键帧运动路径获取贝塞尔曲线的四个点
            for (let j = 0; j < motionPath.length; j++) {
                const item = motionPath[j];
                //获取终点
                end = cc.v3(item[0], item[1]);
                //获取控制终点
                ctrl2 = cc.v3(item[2], item[3]);
                //判断控制起点是否为空
                if (ctrl1 === null) {
                    ctrl1 = ctrl2;
                }
                //添加贝塞尔曲线中各点坐标
                bezier.push([begin, ctrl1, ctrl2, end]);
                //获取控制起点
                ctrl1 = cc.v3(item[4], item[5]);
                //设置下一个节点的起点为上一个节点的终点
                begin = end;
            }
        }
        // //将贝塞尔曲线转换为坐标点
        // const first:cc.Vec3 = bezier[0][0];//获取起始点坐标
        // let data = [first];
        let data = [];
        for (let k = 0; k < bezier.length; k++) {
            const item = bezier[k];
            data.push(item[0]);
            if (k == bezier.length - 1) {
                data.push(item[3]);
            }
        }
        this.path3data = data;
    }

    /**获取路径 */
    public getpathData() {
        return this.path3data;
    }
}