import { _decorator, CCFloat, Color, Component, Material, Node, sp, Sprite } from 'cc';
const { ccclass, property ,menu} = _decorator;

@ccclass('ShimmerWhite')
@menu("树木特效/闪白")
export class ShimmerWhite extends Component {
    @property(CCFloat)
    duration:number = 0.25;
    median:number;
    time:number;
    private _material:Material;
    private Color:Color = new Color(255,255,255);//Color.WHITE.clone();
    get material():Material{
        return;
        // if(!this._material){
        //     if (this.node.getComponent(Sprite)) {
        //         this._material = this.node.getComponent(Sprite).getMaterialInstance(0);
        //     } else {
        //         this.spAnim = this.node.getComponent(sp.Skeleton);
        //         this._material = this.spAnim.getMaterialInstance(0);
        //     }
        // }
        // return this._material;
    };

    spAnim:sp.Skeleton;
    onLoad() {
        this.time = 0;
        this.median = this.duration / 2;
        //this.material.setProperty("u_rate", 1);
    };
    onEnable() {
        this.time = 0;
        // this.material.setProperty("u_rate", 1);
        this.Color.a = 255;
        this.node.getComponent(Sprite).color = this.Color;
    };
    // onDisable() {
    //     this.time = 0;
    //     // this.material.setProperty("u_rate", 1);
    //     this.Color.a = 255;
    //     this.node.getComponent(Sprite).color = this.Color;
    // };
    show(time?:number) {
        if (!time) {
            time = this.duration;
        }
        this.duration = time;
        this.time = this.duration;
        this.Color.a = 0;
        this.node.getComponent(Sprite).color = this.Color;
        //this.material.setProperty("u_rate", 1);
    };
    update(dt:number) {
        if (this.time > 0) {
            this.time -= dt;
            if (this.time < 0) {
                this.time = 0;
            }
            var e = 1 - this.time / this.duration;
            this.Color.a = e*255;
            this.node.getComponent(Sprite).color = this.Color;
            //this.material.setProperty("u_rate", );
            // if (this.spAnim) {
            //     this.spAnim._updateMaterial();
            // }
        }
    };
}