NPCs and Interactions - Mastering Unity 2D Game Development - page 190

using System;
using UnityEngine;
public class Delegates
{
//Define delegate method signature
delegate void RobotAction();
//private property for delegate use
RobotAction myRobotAction;
void Start ()
{
//Set the default method for the delegate
myRobotAction = RobotWalk;
}
void Update()
{
//Run the selected delegate method on update
myRobotAction();
}
//public method to tell the robot to walk
public void DoRobotWalk()
{
//set the delegate method to the walk function
myRobotAction = RobotWalk;
}
void RobotWalk()
{
Debug.Log("Robot walking");
}
//public method to tell the robot to run
public void DoRobotRun()
{
//set the delegate method to the run function
myRobotAction = RobotRun;
}