Question

当我有多个子对象时，如何从.GetComponentInChildren中选择要从哪个子组件中获取组件？

使用此代码，我只得到第一个孩子的MeshRenderer。

 selectedObj.GetComponentInChildren<MeshRenderer>().material.SetColor("_EmissionColor", Color.red);

Answer 1

GetChild无法做到这一点。您可以在int CHILD_INDEX = 3; selectedObj.transform.GetChild(CHILD_INDEX).GetComponent<MeshRenderer>().material.SetColor("_EmissionColor", Color.red);函数的帮助下使用子GameObject的索引执行此操作。下面的代码将获得索引为3的子GameObject的组件。

GetComponentInChildren

为此创建自定义通用扩展方法，并将index参数添加到public static class ExtensionFunction { public static T GetComponentInChildren<T>(this GameObject gameObject, int index) { return gameObject.transform.GetChild(index).GetComponent<T>(); } }函数：

int CHILD_INDEX = 3;
selectedObj.GetComponentInChildren<MeshRenderer>(CHILD_INDEX).material.SetColor("_EmissionColor", Color.red);

然后你现在可以做：

FindChild

每次只想从儿童GameObject获取组件时使用scheduler caught exception: JIRA::HTTPError /Users/users/.rvm/gems/ruby-2.2.4/gems/jira-ruby-1.1.3/lib/jira/request_client.rb:16:in `request' /Users/users/.rvm/gems/ruby-2.2.4/gems/jira-ruby-1.1.3/lib/jira/client.rb:213:in `request' /Users/users/.rvm/gems/ruby-2.2.4/gems/jira-ruby-1.1.3/lib/jira/client.rb:191:in `get' /Users/users/.rvm/gems/ruby-2.2.4/gems/jira-ruby-1.1.3/lib/jira/resource/issue.rb:64:in `jql' /Users/users/.rvm/gems/ruby-2.2.4/gems/jira-ruby-1.1.3/lib/jira/base_factory.rb:33:in `block (2 levels) in delegate_to_target_class' /Users/users/../../jobs/jira_number_of_issues_in_filter.rb:35:in `block (2 levels) in <top (required)>' /Users/users/.rvm/gems/ruby-2.2.4/gems/rufus-scheduler-2.0.24/lib/rufus/sc/jobs.rb:230:in `call' /Users/users/.rvm/gems/ruby-2.2.4/gems/rufus-scheduler-2.0.24/lib/rufus/sc/jobs.rb:230:in `trigger_block' /Users/users/.rvm/gems/ruby-2.2.4/gems/rufus-scheduler-2.0.24/lib/rufus/sc/jobs.rb:204:in `block in trigger' /Users/users/.rvm/gems/ruby-2.2.4/gems/rufus-scheduler-2.0.24/lib/rufus/sc/scheduler.rb:430:in `call' /Users/users/.rvm/gems/ruby-2.2.4/gems/rufus-scheduler-2.0.24/lib/rufus/sc/scheduler.rb:430:in `block in trigger_job'只会减慢你的游戏速度，特别是如果你做了很多。

Answer 2

如果您知道具有所使用组件的子对象的唯一名称，则可以使用transform.FindChild("nameOfChildObject")查找要查找的特定子对象。所以在你的情况下你可以说：

selectedObject.transform.FindChild("nameOfChildObject").GetComponent<MeshRenderer>().material.SetColor("_EmissionColor", Color.red);

Answer 3

这对我有用：

MeshRenderer[] var = selectedObj.GetComponentsInChildren<MeshRenderer>;
foreach (material m in var)
{
   m.SetColor("_EmissionColor", Color.red);
}

然后我只是循环 var 来修改每个对象。

当有多个子对象时，GetComponentInChildren带有子索引

3 个答案: