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ゲームオブジェクトを非アクティブにする

You can mark a GameObject as inactive to temporarily remove it from the Scene. To do this, navigate to the Inspector and uncheck the checkbox next to the GameObject’s name (see image below), or use the activeSelf property in script.

A GameObjects activation checkbox next to the name, both highlighted in the red box
A GameObject’s activation checkbox next to the name, both highlighted in the red box

Deactivating a parent GameObject

When you deactivate a parent GameObject, You also deactivate all of its child GameObjects.

The deactivation overrides the activeSelf setting on all child GameObjects, so Unity makes the whole hierarchy inactive from the parent down. This does not change the value of the activeSelf property on the child GameObjects, so they return to their original state when you re-activate the parent. This means that you can’t determine whether or not a child GameObject is currently active in the Scene by reading its activeSelf property. Instead, you should use the activeInHierarchy property, which takes the overriding effect of the parent into account.

If you want to change the activeSelf settings of a GameObject’s child Gameobjects, but not the parent, you can use code like the following:

void DeactivateChildren(GameObject g, bool a) 
{
    g.activeSelf = a;
    
    foreach (Transform child in g.transform) 
    {
        DeactivateChildren(child.gameObject, a);
    }
}
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