我们经常要在Unity中以各种方式搜索对象。比如按名字搜索、按tag、layer或者是查找名字为xxx开头的对象。

本文是介绍以一种统一的接口来搜索对象。

1、定义统一的搜索接口

    /// 
/// 游戏对象搜索接口/// 
public interface IGameObjectFinder{/// 
/// 搜索/// 
/// 搜索的开始位置/根节点/// 搜索存放的结果void Find(Transform root, List findResult);}

2、定义一个使用上面搜索接口的方法

public class Finder{/// 
/// 查找指定根节点下符合指定的查找器的Transform并保持到findResult中/// 
/// /// /// public static void Find(Transform root, List findResult, IGameObjectFinder finder){if (root == null){throw new Exception("root can not be null, it defines the starting point of the find path");}if (findResult == null){throw new Exception("findResult can not be null, it used to collect the find result");}if (finder == null){throw new Exception("finder can not be null, it defines how to find transform");}finder.Find(root, findResult);}
}

3、实现一个查找某个组件的接口

    /// 
/// 根据组件搜索/// 
/// public class GameObjectFinderByComponent : IGameObjectFinder where T : Component{public void Find(Transform root, List findResult){foreach (var componentsInChild in root.GetComponentsInChildren()){findResult.Add(componentsInChild.transform);}}}

    /// 
/// 迭代遍历搜索/// 
public class GameObjectFinderByIteration : IGameObjectFinder{private IGameObjectFinderForIteration finderForIteration;public GameObjectFinderByIteration(IGameObjectFinderForIteration finderForIteration){this.finderForIteration = finderForIteration;}public void Find(Transform root, List findResult){for (int i = 0, childCount = root.childCount; i < childCount; i++){Transform t = root.GetChild(i);if (finderForIteration.isVaild(t)){findResult.Add(t);}Find(t, findResult);}}}

    /// 
/// 迭代搜索判断/// 
public interface IGameObjectFinderForIteration{/// 
/// 指定节点是否合法/// 
/// /// bool isVaild(Transform node);}

    /// 
/// 迭代遍历按名字搜索/// 
public class FinderForIterationByName : IGameObjectFinderForIteration{protected readonly string NAME;public FinderForIterationByName(string name){NAME = name;}public bool isVaild(Transform getChild){return getChild.gameObject.name.Equals(NAME);}}

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