GameObject.FindGameObjectsWithTag

パラメーター

説明

/tag/でタグ付けされたアクティブなゲームオブジェクトのリストを返します。もし見つからない場合は空配列を返します

この関数を使用する前にタグマネージャーでタグの設定を行う必要があります。タグが存在しない、または空文字や null を渡した場合は UnityException の例外が発生します。

// Instantiates respawnPrefab at the location 
// of all game objects tagged "Respawn".

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public GameObject respawnPrefab;
    public GameObject[] respawns;
    void Start() {
        if (respawns == null)
            respawns = GameObject.FindGameObjectsWithTag("Respawn");
        
        foreach (GameObject respawn in respawns) {
            Instantiate(respawnPrefab, respawn.transform.position, respawn.transform.rotation);
        }
    }
}

他の例:

    // Find the name of the closest enemy
    
    GameObject FindClosestEnemy() {
        GameObject[] gos;
        gos = GameObject.FindGameObjectsWithTag("Enemy");
        GameObject closest = null;
        float distance = Mathf.Infinity;
        Vector3 position = transform.position;
        foreach (GameObject go in gos) {
            Vector3 diff = go.transform.position - position;
            float curDistance = diff.sqrMagnitude;
            if (curDistance < distance) {
                closest = go;
                distance = curDistance;
            }
        }
        return closest;
    }
}

他の例: 空配列のテスト

// Search for game objects with a tag that is not used

function Start () {
    var gos : GameObject[];
    gos = GameObject.FindGameObjectsWithTag("fred"); 

    if (gos.length == 0) {
        Debug.Log("No game objects are tagged with fred");
    }
}