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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using UnityEngine;
using Unity.MLAgents;
namespace Unity.MLAgentsExamples
{
/// <summary>
/// A helper class for the ML-Agents example scenes to override various
/// global settings, and restore them afterwards.
/// This can modify some Physics and time-stepping properties, so you
/// shouldn't copy it into your project unless you know what you're doing.
/// </summary>
public class ProjectSettingsOverrides : MonoBehaviour
{
// Original values
Vector3 m_OriginalGravity;
float m_OriginalFixedDeltaTime;
float m_OriginalMaximumDeltaTime;
int m_OriginalSolverIterations;
int m_OriginalSolverVelocityIterations;
bool m_OriginalReuseCollisionCallbacks;
[Tooltip("Increase or decrease the scene gravity. Use ~3x to make things less floaty")]
public float gravityMultiplier = 1.0f;
[Header("Advanced physics settings")]
[Tooltip("The interval in seconds at which physics and other fixed frame rate updates (like MonoBehaviour's FixedUpdate) are performed.")]
public float fixedDeltaTime = .02f;
[Tooltip("The maximum time a frame can take. Physics and other fixed frame rate updates (like MonoBehaviour's FixedUpdate) will be performed only for this duration of time per frame.")]
public float maximumDeltaTime = 1.0f / 3.0f;
[Tooltip("Determines how accurately Rigidbody joints and collision contacts are resolved. (default 6). Must be positive.")]
public int solverIterations = 6;
[Tooltip("Affects how accurately the Rigidbody joints and collision contacts are resolved. (default 1). Must be positive.")]
public int solverVelocityIterations = 1;
[Tooltip("Determines whether the garbage collector should reuse only a single instance of a Collision type for all collision callbacks. Reduces Garbage.")]
public bool reuseCollisionCallbacks = true;
public void Awake()
{
// Save the original values
m_OriginalGravity = Physics.gravity;
m_OriginalFixedDeltaTime = Time.fixedDeltaTime;
m_OriginalMaximumDeltaTime = Time.maximumDeltaTime;
m_OriginalSolverIterations = Physics.defaultSolverIterations;
m_OriginalSolverVelocityIterations = Physics.defaultSolverVelocityIterations;
m_OriginalReuseCollisionCallbacks = Physics.reuseCollisionCallbacks ;
// Override
Physics.gravity *= gravityMultiplier;
Time.fixedDeltaTime = fixedDeltaTime;
Time.maximumDeltaTime = maximumDeltaTime;
Physics.defaultSolverIterations = solverIterations;
Physics.defaultSolverVelocityIterations = solverVelocityIterations;
Physics.reuseCollisionCallbacks = reuseCollisionCallbacks;
// Make sure the Academy singleton is initialized first, since it will create the SideChannels.
Academy.Instance.EnvironmentParameters.RegisterCallback("gravity", f => { Physics.gravity = new Vector3(0, -f, 0); });
}
public void OnDestroy()
{
Physics.gravity = m_OriginalGravity;
Time.fixedDeltaTime = m_OriginalFixedDeltaTime;
Time.maximumDeltaTime = m_OriginalMaximumDeltaTime;
Physics.defaultSolverIterations = m_OriginalSolverIterations;
Physics.defaultSolverVelocityIterations = m_OriginalSolverVelocityIterations;
Physics.reuseCollisionCallbacks = m_OriginalReuseCollisionCallbacks;
}
}
}