ActionSequenceSystem

A Unity3D C# multifunctional chaining timer system
一个U3D C# 多功能链式计时器

支持Unity Package Manager，在manifest.json中添加以下代码
"com.jpp.actionsequence": "https://github.com/karsion/ActionSequenceSystem.git#1.0.3",

简要说明

简单上手：在脚本中使用this作为入口，e.g. this.Delayer(1, DoSomething);
自定义：e.g. this.Sequence().Loop(2).Interval(1).Action(DoSomething1).Interval(0.5f).Action(DoSomething2);
无GC：使用了内存池存放序列和节点，在数组容量足够的情况下，运行时无GC（数组自动扩容会产生GC）
自动回收：使用Component或其子类作为ID受控，一旦ID被销毁，计时器会随之自动回收
精准受控：准确停止指定的计时器（请看使用方法的最后）
支持时间缩放：支持deltaTime和unscaledDeltaTime

设计架构

ActionSequenceSystem 序列系统

使用了内存池
管理ActionSequence

ActionSequence 序列

对Component做了扩展，在脚本中使用this作为入口
对Component实例做了依赖，使其可以随Component实例的销毁自动回收
可自定义，加入不同的ActionNode实现不同的行为链

ActionNode 节点

Action：执行函数
Interval：延迟一段时间
SetActive：激活物体/返激活物体
WaitFor：知道条件判断为true才跳下一个节点

结构图

graph TD
ActionSequenceSystem-->ActionSequence
ActionSequence-->ActionNode
Pooling1-->ActionSequence
Pooling2-->ActionNode

ActionNode-->Action
ActionNode-->Interval
ActionNode-->SetActive
ActionNode-->WaitFor

使用方法

说明：下面使用方法中的this的类型为Component或其子类（其实this is MonoBehaviour）

延迟开关GameObject功能

既然用了Component来做ID，控制gameObject显示隐藏就是举手之劳，何乐而不为

//Start a toggle gameObject active/deactive sequence
tfShowHideExample.Shower(0.5f);
tfShowHideExample.Hider(1.5f);

//Start a infinite loop toggle active gameObject
tfShowHideExample.Sequence().Interval(0.5f).ToggleActive().Loop();

开启单次计时器（延迟）

//Start a once timer
this.Delayer(1, () => Debug.Log(1));
this.Sequence().Interval(1).Action(() => Debug.Log(1));//Same

//Allso use transform as a ID to start a sequence
transform.Delayer(1, () => Debug.Log(1));

开启计次计时器（次数)

//Start a loop timer
this.Looper(0.5f, 3, false, () => Debug.Log(-1));
this.Sequence().Loop(3).Interval(0.5f).Action(() => Debug.Log(-1));//Same

开启无限计时器

相当于计次计时器的缩写，循环次数设置为-1

//Start a infinite loop timer
this.Looper(1, i => Debug.Log("Infiniter" + i));

开启自定义序列

//Start a custom sequence
this.Sequence()
    .Interval(2)
    .Action(() => Debug.Log("Test1"))
    .Interval(3)
    .Action(() => Debug.Log("Test2"))
    .Interval(1)
    .Action(() => Debug.Log("Test3 end"));

//Check Q key per 0.2 seconds
this.Sequence()
    .Loop()
    .Interval(0.2f)
    .WaitFor(() => Input.GetKeyDown(KeyCode.Q))
    .Action(n => Debug.Log("Q键 按下次数" + n));

停止序列

//Stop the sequence with the specified ID
private ActionSequence sequence;
sequence = this.Looper(0.5f, 3, false, () => Debug.Log(-1));
sequence.Stop(this);

//Stop all sequences by this ID
this.StopSequence();

//Allso transform as ID
transform.StopSequence();

可以不用ID直接开序列

//Start a sequence without id.
ActionSequenceSystem.Delayer(5, () => Debug.Log("No id delayer"));
ActionSequenceSystem.Looper(0.2f, 10, false, () => Debug.Log("No id looper"));

//Notes：An instance must be preserved to manually stop an infinite loop sequence.
ActionSequenceHandle infiniteSequenceHandle = new ActionSequenceHandle();
ActionSequenceSystem.Looper(0.2f, -1, false, () => Debug.Log("No id infinite looper")).SetHandle(infiniteSequenceHandle);
infiniteSequenceHandle.StopSequence();

停止序列特殊技巧：ActionSequenceHandle用法

简单来说就是引用一个计时器，让我们可以随时手动停止它
但ActionSequence自身有停止的方法，为什么还要使用ActionSequenceHandle？
ActionSequenceHandle是为了处理“开启全局计时器时不传入ID，又要控制这个计时器”的情况

public class ActionSequenceHandleExample : MonoBehaviour
{
    private readonly ActionSequenceHandle infiniteSequenceHandle = new ActionSequenceHandle();
    private ActionSequence sequence;
    
    private void Start()
    {
        //Notes：An instance must be preserved to manually stop an infinite loop sequence.
        ActionSequenceSystem.Looper(infiniteSequenceHandle, 0.2f, -1, false, () => Debug.Log("No id infinite looper"));
        sequence = this.Looper(0.5f, 3, false, () => Debug.Log("this looper"));
    }

    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.B))
        {
            //使用ActionSequenceHandle停止
            infiniteSequenceHandle.StopSequence();
            //使用ActionSequence停止
            sequence.Stop(this);
            this.StopSequence(sequence);//Same as sequence.Stop(this);
        }

        if (Input.GetKeyDown(KeyCode.X))
        {
            transform.Looper(infiniteSequenceHandle, 1, 5, false, i =>
            {
                if (i == 2)
                {
                    infiniteSequenceHandle.StopSequence();
                }
            });
        }
    }
}

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