import { _decorator, Component, director, Node, sp, Sprite, UITransform, Vec3 } from 'cc';
import { PREVIEW } from 'cc/env';
import { features } from 'process';
const { ccclass, property ,menu} = _decorator;

@ccclass('SiblingIndex')
@menu("根据Y轴调整顺序")
export class SiblingIndex extends Component {

    //_delayDirtyFrame:number=0;
    static _first:boolean = true;
    protected update(dt: number): void {
        //this._delayDirtyFrame++;
        if (!(director.getTotalFrames() % 7)) {
            //this._delayDirtyFrame = 0;
            let children = this.node.children.concat();
            children = children.sort((a, b) => {
                return b.position.y - a.position.y;
            });
            let tempSpine:sp.Skeleton[]=[];
            for (let i = 0; i < children.length; i++) {
                const tNode = children[i];
                let tIndex = tNode.getSiblingIndex()
                let targetIndex = i;
                let list = tNode.getComponentsInChildren(sp.Skeleton);
                if (list && list.length > 0) {
                    /**如果改节点有一个空数据节点 那么不更新数据 */
                    if (!this.CheckAllSkeletonDataNoEmpty(list)) {
                        continue;
                    }
                    if (tIndex != targetIndex || SiblingIndex._first) {
                        for (let j = 0; j < list.length; j++) {
                            const element = list[j];
                            //@ts-ignore
                            element.TempData = element.skeletonData;
                            //element.skeletonData = null;
                        }
                        tNode.setSiblingIndex(targetIndex);
                        tempSpine = tempSpine.concat(list);
                    }
                } else {
                    if (tIndex != targetIndex || SiblingIndex._first) {
                        tNode.setSiblingIndex(targetIndex);
                    }
                }
            }
            for (let i = 0; i < tempSpine.length; i++) {
                const element = tempSpine[i];
                //@ts-ignore
                element.skeletonData =  element.TempData;
            }
            SiblingIndex._first = false;
        }
    }

    /**检查所有Spine数据不为空 */
    CheckAllSkeletonDataNoEmpty(list:sp.Skeleton[]){
        return true;
        // for (let j = 0; j < list.length; j++) {
        //     const element = list[j];
        //     if (!element.skeletonData) {
        //         return false;
        //     }
        // }
        // return true;
    }
}

if(PREVIEW){
    window["SiblingIndex"] = SiblingIndex
}