import { _decorator, CCFloat, CCInteger, Component, tween, v3} from 'cc';
const { ccclass, property } = _decorator;

@ccclass('ScaleScripts')
export default class ScaleScripts extends Component {

    @property({ type: CCFloat })
    scaleStart: number = 1;

    @property({ type: CCFloat })
    scaleEnd: number = 1;

    @property({ type: CCFloat })
    time: number = 0.2;
    tw = null;
    // LIFE-CYCLE CALLBACKS:
    
    onLoad () {
        this.startTween();
    }

    public startTween () {
        if (null == this.tw){
            this.tw = tween(this.node)
            .repeatForever(
                tween()
                .to(this.time, { scale: v3(this.scaleEnd, this.scaleEnd, this.scaleEnd)})
                .to(this.time*1.5, { scale: v3(this.scaleStart, this.scaleStart, this.scaleStart) })
            )
            .start()
        }
    }

    stopAnim(){
        if (this.tw !=null){
            this.tw.stop();
            this.node.scale = v3(this.scaleStart, this.scaleStart, this.scaleStart);
            this.tw = null;
        }
    }
    // update (dt) {}
}