设计模式模板

1.工厂模式

1.1new同类型东西比较多的时候用到

1.2几点功能
1.2.1加载资源
1.2.2初始化
1.2.3放到合适的位置

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
/// <summary>
/// 工厂
/// </summary>
public class Factory {

Sprite[] allSprit;

Transform parent;

public Factory()
{
    Initial();
}

public void Initial()
{
    allSprit = Resources.LoadAll<Sprite>("1534238263(1)");
    parent = GameObject.FindWithTag("MainCanvas").transform;
}

public GameObject CreatrImage(int index,Vector3 pos)
{
    GameObject tmpObj = new GameObject();

    //判断是否超过数组长度
    index = index % allSprit.Length;

    tmpObj.AddComponent<Image>().sprite=allSprit[index];

    tmpObj.transform.SetParent(parent,false);

    tmpObj.transform.localPosition = pos;
    return tmpObj;

}

}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
/// <summary>
/// 使用工厂
/// </summary>
public class UseFactory : MonoBehaviour {

Factory useFactory;

void Start () {
    useFactory = new Factory();
}

int index = 0;
void Update () {

    if (Input.GetKeyDown(KeyCode.A))
    {
        index++;
        Vector3 v = Vector3.one * index*100;
        useFactory.CreatrImage(index, v);
    }
}

}

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2.观察者模式

模拟播放动画
2.1当动画播放完毕时，播放一个粒子特效。由于我们不知道什么时候播放完成，所以需要一直询问（下图示例）。

image.png

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3.代理模式

image.png

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;

public class AnimalPlayer:MonoBehaviour
{

UnityAction AnimalDelegate;

//public delegate void AnimalDelegate();

public Animation animal;

public AnimalPlayer(Animation ani,UnityAction action)
{
    animal = ani;
    AnimalDelegate = action;
}

public void Play(string name)
{
    animal.Play(name);
}

  public bool isTrigger=false;
private void Update()
{
    //如果动画播放完毕，调用callback
    if (!animal.IsPlaying("")&&isTrigger)
    {
        AnimalDelegate();
        isTrigger = true;
    }
}

}

public class DelegateModle : MonoBehaviour {

public AnimalPlayer animalPlayer;

public Animation ani;

public void CallBack()
{
    Debug.Log("进入回调");
}

void Start () {
    animalPlayer = new AnimalPlayer(ani, CallBack);
}

}

单例模式：
整个软件生命周期有且只有一个
拖拽到物体身上相当于new的操作，拖拽两次就是new两次
只能挂载到一个物体身上

非继承Mono的单例

image.png

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策略模式

image.png

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
/// <summary>
/// 策略模式
/// 通过多态实现，父类的指针指向子类的方法
/// </summary>
public class StrategyBase : MonoBehaviour {

public float playerTax;

public virtual void CaculaeTax()
{

}

}

public class PersonStrage : StrategyBase
{
public override void CaculaeTax()
{
//base.CaculaeTax();
playerTax *= 0.08f;
}

}

public class CompaneyStrage : StrategyBase
{

public override void CaculaeTax()
{
    playerTax *= 0.12f;
    
    //base.CaculaeTax();
}

}

public class Strage : MonoBehaviour
{
public void CaculaeTax(StrategyBase tmpBase)
{
tmpBase.CaculaeTax();
}

private void Start()
{
    PersonStrage personStrage = new PersonStrage();
    CaculaeTax(personStrage);

    CompaneyStrage companeyStrage = new CompaneyStrage();
    CaculaeTax(companeyStrage);
}

}

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