/// <summary>
/// 取得一个组件，如果没有就添加这个组件
/// </summary>
/// <typeparam name="T">目标组件</typeparam>
/// <param name="monoBehaviour"></param>
/// <returns>目标组件</returns>
public static T GetComponentIfNullAdd <T>(this Behaviour monoBehaviour)
where T : Component
{
var com = monoBehaviour.GetComponent <T>();
if (com == null)
{
com = monoBehaviour.gameObject.AddComponent <T>();
}
return(com);
}
/// <summary>
/// 取得一个组件，如果没有就添加这个组件
/// </summary>
/// <typeparam name="T">目标组件</typeparam>
/// <param name="monoBehaviour"></param>
/// <param name="isNewAdd">返回是不是新添加的</param>
/// <returns>目标组件</returns>
public static T GetComponentIfNullAdd <T>(this Behaviour monoBehaviour, out bool isNewAdd)
where T : Component
{
isNewAdd = false;
var com = monoBehaviour.GetComponent <T>();
if (com == null)
{
com = monoBehaviour.gameObject.AddComponent <T>();
isNewAdd = true;
}
return(com);
}