进度计时器Cocos JS V3



我是Cocos-js中的新手。

我想在Cocos JS中制作一个健康栏,然后尝试此代码。我选择使用进度计时器。但是,当我使用此代码时,它只是显示栏,没有运行动作。怎么了?

var healthBar = cc.ProgressTimer.create(cc.Sprite.create("health_bar1.png"));
            healthBar.setType(cc.PROGRESS_TIMER_TYPE_BAR);
            healthBar.setBarChangeRate(cc.p(1,0));
            healthBar.setMidpoint(cc.p(0,0));
            this.addChild(healthBar, 1);
            healthBar.setPosition(cc.winSize.width/2, cc.winSize.height/2);
            var to1 = cc.progressTo(5, 100);
            healthBar.runAction(to1);

此代码对我很好:

var healthBar = cc.ProgressTimer.create(cc.Sprite.create("health_bar1.png"));
        healthBar.setType(cc.ProgressTimer.TYPE_BAR);
        healthBar.setBarChangeRate(cc.p(1,0));
        healthBar.setMidpoint(cc.p(0,0));
        healthBar.setPosition(cc.winSize.width/2, cc.winSize.height/2);
        this.getParent().addChild(healthBar, 1);
        var to1 = cc.progressTo(5, 100);
        healthBar.runAction(to1);

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