java - Universal Tween Engine 中的时间控制

Question

Timeline.createSequence()
.push(Tween.set(cuptop1, SpriteAccessor.ALPHA).target(0).start(tweenManager))
.push(Tween.set(cuptop2, SpriteAccessor.ALPHA).target(0).start(tweenManager))

.push(Timeline.createParallel()
    .push(Tween.to(cuptop1, SpriteAccessor.ALPHA,0.5f).delay(0.5f).target(1).start(tweenManager))
    .push(Tween.to(cuptop2, SpriteAccessor.ALPHA,0.5f).delay(0.3f).target(1).start(tweenManager))   
    .start(tweenManager)
    )

.pushPause(1)

.push(Timeline.createParallel()
    .push(Tween.to(cuptop1, SpriteAccessor.POS_XY, 1.0f).target(10,10).ease(TweenEquations.easeNone).start(tweenManager))
    .push(Tween.to(cuptop2, SpriteAccessor.POS_XY, 1.0f).target(20,20).ease(TweenEquations.easeNone).start(tweenManager))
    .start(tweenManager)
    )

.pushPause(1)

.push(Timeline.createParallel()
    .push(Tween.to(cuptop1, SpriteAccessor.POS_XY, 1.0f).target(100,100).ease(TweenEquations.easeNone).start(tweenManager))
    .push(Tween.to(cuptop2, SpriteAccessor.POS_XY, 1.0f).target(200,200).ease(TweenEquations.easeNone).start(tweenManager))
    .start(tweenManager)
    )
.start(tweenManager);

嗨，我是编程新手。我正在使用补间引擎制作动画。

应该是这样的:

首先，2个杯子分别同时出现在(100, 100)和(200, 200)处。
一秒后，2个杯子同时分别移动到(10, 10)和(20, 20)。
最后，它们同时回到原来的位置。returns

然而，这 3 个步骤同时发生并忽略了 pushPause。我该如何纠正它？谢谢!

Answer 1

问题是您将 .start(tweenManager) 调用到触发 3 个连续动画中的每一个立即运行的内部声明中。

你的代码应该是这样的:

Timeline.createSequence()
.push(Tween.set(cuptop1, SpriteAccessor.ALPHA).target(0).start(tweenManager))
.push(Tween.set(cuptop2, SpriteAccessor.ALPHA).target(0).start(tweenManager))

.push(Timeline.createParallel()
    .push(Tween.to(cuptop1, SpriteAccessor.ALPHA,0.5f).delay(0.5f).target(1).start(tweenManager))
    .push(Tween.to(cuptop2, SpriteAccessor.ALPHA,0.5f).delay(0.3f).target(1).start(tweenManager))   
    )

.pushPause(1)

.push(Timeline.createParallel()
    .push(Tween.to(cuptop1, SpriteAccessor.POS_XY, 1.0f).target(10,10).ease(TweenEquations.easeNone).start(tweenManager))
    .push(Tween.to(cuptop2, SpriteAccessor.POS_XY, 1.0f).target(20,20).ease(TweenEquations.easeNone).start(tweenManager))
    )

.pushPause(1)

.push(Timeline.createParallel()
    .push(Tween.to(cuptop1, SpriteAccessor.POS_XY, 1.0f).target(100,100).ease(TweenEquations.easeNone).start(tweenManager))
    .push(Tween.to(cuptop2, SpriteAccessor.POS_XY, 1.0f).target(200,200).ease(TweenEquations.easeNone).start(tweenManager))
    )

.start(tweenManager);