GameObject.BroadcastMessage

Description

调用此游戏对象或其任何子项中的每个 MonoBehaviour 上名为 methodName 的方法。

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;

public class Example : MonoBehaviour
{
    void Start()
    {
        /// Calls the function ApplyDamage with a value of 5
        /// // Every script attached to the game object and all its children
        // that has a ApplyDamage function will be called.
        gameObject.BroadcastMessage("ApplyDamage", 5.0);
    }
}


public class Example2 : MonoBehaviour
{
    public void ApplyDamage(float damage)
    {
        print(damage);
    }
}