LTweenerSequence（动画序列）

LTweenerSequence是一种特殊的补间动画类型，它可以控制一组其他补间动画。首先，它是个补间动画，所以它继承了一般补间动画都有的属性和函数。它也有它自己独特的属性和函数。

函数

/**
 * Adds the given tween to the end of the Sequence.
 * Not support Tweener type: Delay/ DelayFrame/ Virtual.
 * Has no effect if the Sequence has already started.
 */
ULTweenerSequence* Append(UObject* WorldContextObject, ULTweener* tweener);
/**
 * Adds the given interval to the end of the Sequence.
 * Has no effect if the Sequence has already started.
 * @param interval The interval duration
 */
ULTweenerSequence* AppendInterval(UObject* WorldContextObject, float interval);
/**
 * Inserts the given tween at the given time position in the Sequence, automatically adding an interval if needed.
 * Not support Tweener type: Delay/ DelayFrame/ Virtual.
 * Has no effect if the Sequence has already started.
 * @param timePosition The time position where the tween will be placed
 */
ULTweenerSequence* Insert(UObject* WorldContextObject, float timePosition, ULTweener* tweener);
/**
 * Adds the given tween to the beginning of the Sequence, pushing forward the other nested content.
 * Not support Tweener type: Delay/ DelayFrame/ Virtual.
 * Has no effect if the Sequence has already started.
 */
ULTweenerSequence* Prepend(UObject* WorldContextObject, ULTweener* tweener);
/**
 * Adds the given interval to the beginning of the Sequence, pushing forward the other nested content.
 * Has no effect if the Sequence has already started.
 * @param interval The interval duration
 */
ULTweenerSequence* PrependInterval(UObject* WorldContextObject, float interval);
/**
 * Inserts the given tween at the same time position of the last tween added to the Sequence.
 * Note that, in case of a Join after an interval, the insertion time will be the time where the interval starts, not where it finishes.
 * Not support Tweener type: Delay/ DelayFrame/ Virtual.
 * Has no effect if the Sequence has already started.
 */
ULTweenerSequence* Join(UObject* WorldContextObject, ULTweener* tweener);

如何使用

创建个LTweenerSequence

C++：

auto Sequence = ULTweenBPLibrary::CreateSequence(this);

蓝图：
在LTween分类里找到Create Sequence节点

添加其他动画

C++：

Sequence->Append(this, ULTweenBPLibrary::LocalPositionXTo(Actor1->GetRootComponent(), 100, 1.0f));
Sequence->Insert(this, 0.5f, ULTweenBPLibrary::LocalPositionYTo(Actor1->GetRootComponent(), 100, 1.0f));
Sequence->Prepend(this, ULTweenBPLibrary::LocalPositionZTo(Actor1->GetRootComponent(), 100, 1.0f));
Sequence->Join(this, ULTweenBPLibrary::LocalPositionXTo(Actor2->GetRootComponent(), 100, 1.0f));

蓝图：

属性，事件，函数

属性：
C++：

Sequence->SetDelay(0.5f);
Sequence->SetEase(LTweenEase::InOutSine);
Sequence->SetLoop(LTweenLoop::Restart, -1);
Sequence->GetLoopCycleCount();

蓝图： 事件：
C++：

Sequence->OnStart([=]{...});
Sequence->OnUpdate([=](float progress){...});
Sequence->OnComplete([=]{...});
Sequence->OnCycleStart([=]{...});
Sequence->OnCycleComplete([=]{...});

蓝图： 函数：
C++：

Sequence->Pause();
Sequence->Resume();
Sequence->Restart();
Sequence->Goto(0.5f);

蓝图：