Unity 机器学习代理工具包 (ML-Agents) 是一个开源项目,它使游戏和模拟能够作为训练智能代理的环境。
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2.9 KiB

using System.IO.Abstractions;
using System.Text.RegularExpressions;
using UnityEngine;
using System.Collections.Generic;
using MLAgents.Sensor;
namespace MLAgents
{
/// <summary>
/// Demonstration Recorder Component.
/// </summary>
[RequireComponent(typeof(Agent))]
[AddComponentMenu("ML Agents/Demonstration Recorder", (int)MenuGroup.Default)]
public class DemonstrationRecorder : MonoBehaviour
{
public bool record;
public string demonstrationName;
Agent m_RecordingAgent;
string m_FilePath;
DemonstrationStore m_DemoStore;
public const int MaxNameLength = 16;
void Start()
{
if (Application.isEditor && record)
{
InitializeDemoStore();
}
}
void Update()
{
if (Application.isEditor && record && m_DemoStore == null)
{
InitializeDemoStore();
}
}
/// <summary>
/// Creates demonstration store for use in recording.
/// </summary>
public void InitializeDemoStore(IFileSystem fileSystem = null)
{
m_RecordingAgent = GetComponent<Agent>();
m_DemoStore = new DemonstrationStore(fileSystem);
var behaviorParams = GetComponent<BehaviorParameters>();
demonstrationName = SanitizeName(demonstrationName, MaxNameLength);
m_DemoStore.Initialize(
demonstrationName,
behaviorParams.brainParameters,
behaviorParams.fullyQualifiedBehaviorName);
Monitor.Log("Recording Demonstration of Agent: ", m_RecordingAgent.name);
}
/// <summary>
/// Removes all characters except alphanumerics from demonstration name.
/// Shorten name if it is longer than the maxNameLength.
/// </summary>
public static string SanitizeName(string demoName, int maxNameLength)
{
var rgx = new Regex("[^a-zA-Z0-9 -]");
demoName = rgx.Replace(demoName, "");
// If the string is too long, it will overflow the metadata.
if (demoName.Length > maxNameLength)
{
demoName = demoName.Substring(0, maxNameLength);
}
return demoName;
}
/// <summary>
/// Forwards AgentInfo to Demonstration Store.
/// </summary>
public void WriteExperience(AgentInfo info, List<ISensor> sensors)
{
m_DemoStore.Record(info, sensors);
}
public void Close()
{
if (m_DemoStore != null)
{
m_DemoStore.Close();
m_DemoStore = null;
}
}
/// <summary>
/// Closes Demonstration store.
/// </summary>
void OnApplicationQuit()
{
if (Application.isEditor && record)
{
Close();
}
}
}
}