GameObject.BroadcastMessage

설명

Calls the method named methodName on every MonoBehaviour in this game object or any of its children.

The receiving method can choose to ignore parameter by having zero parameters. If options is set to SendMessageOptions.RequireReceiver an error is printed when the message is not picked up by any component.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void ApplyDamage(float damage) {
        print(damage);
    }
    void Example() {
        gameObject.BroadcastMessage("ApplyDamage", 5.0F);
    }
}