GameObject.tag

説明

ゲームオブジェクトのタグ

タグはゲームオブジェクトを見分けるために使用することができます。 タグを使用する前に Tags and Layers マネージャー でタグ名を宣言する必要があります。

Note: You should not set a tag from the Awake() or OnValidate() method. This is because the order in which components become awake is not deterministic, and therefore can result in unexpected behaviour such as the tag being overwritten when it is awoken. If you try this, Unity will generate a warning reading "SendMessage cannot be called during Awake, CheckConsistency, or OnValidate".

using UnityEngine;

public class CollisionGameObjectExample : MonoBehaviour
{
    //Detect collisions between the GameObjects with Colliders attached
    void OnCollisionEnter(Collision collision)
    {
        //Check for a match with the specified name on any GameObject that collides with your GameObject
        if (collision.gameObject.name == "MyGameObjectName")
        {
            //If the GameObject's name matches the one you suggest, output this message in the console
            Debug.Log("Do something here");
        }

        //Check for a match with the specific tag on any GameObject that collides with your GameObject
        if (collision.gameObject.tag == "MyGameObjectTag")
        {
            //If the GameObject has the same tag as specified, output this message in the console
            Debug.Log("Do something else here");
        }
    }
}