视频教程: 如何使用节点触发器来检测节点状态的变化

using System.Collections;
using System.Collections.Generic;
using Unigine;

[Component(PropertyGuid = "AUTOGENERATED_GUID")] // <-- this line is generated automatically for a new component
public class Trigger : Component
{
	public AssetLink explosion;

	void position_event_handler(NodeTrigger trigger)
	{
		Log.Message("Object position has been changed. New position is: {0}\n\n", trigger.WorldPosition.ToString());
	}


	void enabled_event_handler(NodeTrigger trigger)
	{
		SoundSource soundSource = new SoundSource(explosion.Path);
		soundSource.WorldPosition = trigger.WorldPosition;
		soundSource.MaxDistance = 100.0f;
		soundSource.Play();
	}

	NodeTrigger nodeTrigger;
	void Init()
	{
		// Cast Node to NodeTrigger
		nodeTrigger = node as NodeTrigger;

		if(nodeTrigger){
			// Subscribe for Enabled and Position events to perform actions 
			// when a node is enabled/disabled or changes its position
			nodeTrigger.EventEnabled.Connect(enabled_event_handler);
			nodeTrigger.EventPosition.Connect(position_event_handler);
		}
	}
	
	void Update()
	{
		// Disable the parent object when it is below the plane z = 2.0f
		if(node.Parent.WorldPosition.z < 2.0f)
			node.Parent.Enabled = false;
		
	}
}