Unity - Scripting API: GameObject.SendMessage

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Declaration

public void SendMessage(string methodName, object value = null, SendMessageOptions options = SendMessageOptions.RequireReceiver);

Parameters

Parameter	Description
methodName	The name of the MonoBehaviour method to call.
value	An optional parameter value to pass to the called method.
options	Whether an error should be raised if the method doesn't exist on the target object.

Description

Calls the specified method on every MonoBehaviour attached to the GameObject.

using UnityEngine;public class Example : MonoBehaviour
{
    void Start()
    {
        // Calls the function ApplyDamage with a value of 5
        // Every script attached to the GameObject
        // that has an ApplyDamage function will be called.
        gameObject.SendMessage("ApplyDamage", 5.0);
    }
}
public class Example2 : MonoBehaviour
{
    public void ApplyDamage(float damage)
    {
        print(damage);
    }
}