Add an example project for the InputSystemActuator. (#4976)

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ML-Agents-Input-Example/Assets/ML-Agents/Examples/PushBlock/Scripts/GoalDetect.cs

+//Detect when the orange block has touched the goal.
+//Detect when the orange block has touched an obstacle.
+//Put this script onto the orange block. There's nothing you need to set in the editor.
+//Make sure the goal is tagged with "goal" in the editor.
+
+using UnityEngine;
+
+public class GoalDetect : MonoBehaviour
+{
+    /// <summary>
+    /// The associated agent.
+    /// This will be set by the agent script on Initialization.
+    /// Don't need to manually set.
+    /// </summary>
+    [HideInInspector]
+    public PushAgentBasic agent;  //
+
+    void OnCollisionEnter(Collision col)
+    {
+        // Touched goal.
+        if (col.gameObject.CompareTag("goal"))
+        {
+            agent.ScoredAGoal();
+        }
+    }
+}

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ML-Agents-Input-Example/Assets/ML-Agents/Examples/PushBlock/Scripts/PushAgentBasic.cs

+//Put this script on your blue cube.
+
+using System;
+using System.Collections;
+using UnityEngine;
+using Unity.MLAgents;
+using Unity.MLAgents.Actuators;
+using Random = UnityEngine.Random;
+
+public class PushAgentBasic : Agent
+{
+    /// <summary>
+    /// The ground. The bounds are used to spawn the elements.
+    /// </summary>
+    public GameObject ground;
+
+    public GameObject area;
+
+    /// <summary>
+    /// The area bounds.
+    /// </summary>
+    [HideInInspector]
+    public Bounds areaBounds;
+
+    PushBlockSettings m_PushBlockSettings;
+
+    /// <summary>
+    /// The block to be pushed to the goal.
+    /// </summary>
+    public GameObject block;
+
+    /// <summary>
+    /// Detects when the block touches the goal.
+    /// </summary>
+    [HideInInspector]
+    public GoalDetect goalDetect;
+
+    Rigidbody m_BlockRb;  //cached on initialization
+    Rigidbody m_AgentRb;  //cached on initialization
+    Material m_GroundMaterial; //cached on Awake()
+
+    /// <summary>
+    /// We will be changing the ground material based on success/failue
+    /// </summary>
+    Renderer m_GroundRenderer;
+
+    EnvironmentParameters m_ResetParams;
+
+    void Awake()
+    {
+        m_PushBlockSettings = FindObjectOfType<PushBlockSettings>();
+
+        goalDetect = block.GetComponent<GoalDetect>();
+        goalDetect.agent = this;
+
+        // Cache the agent rigidbody
+        m_AgentRb = GetComponent<Rigidbody>();
+        // Cache the block rigidbody
+        m_BlockRb = block.GetComponent<Rigidbody>();
+        // Get the ground's bounds
+        areaBounds = ground.GetComponent<Collider>().bounds;
+        // Get the ground renderer so we can change the material when a goal is scored
+        m_GroundRenderer = ground.GetComponent<Renderer>();
+        // Starting material
+        m_GroundMaterial = m_GroundRenderer.material;
+    }
+
+    public override void Initialize()
+    {
+        m_ResetParams = Academy.Instance.EnvironmentParameters;
+
+        SetResetParameters();
+    }
+
+    /// <summary>
+    /// Use the ground's bounds to pick a random spawn position.
+    /// </summary>
+    public Vector3 GetRandomSpawnPos()
+    {
+        var foundNewSpawnLocation = false;
+        var randomSpawnPos = Vector3.zero;
+        var tries = 0;
+        while (foundNewSpawnLocation == false && tries < 50)
+        {
+            var randomPosX = Random.Range(-areaBounds.extents.x * m_PushBlockSettings.spawnAreaMarginMultiplier,
+                areaBounds.extents.x * m_PushBlockSettings.spawnAreaMarginMultiplier);
+
+            var randomPosZ = Random.Range(-areaBounds.extents.z * m_PushBlockSettings.spawnAreaMarginMultiplier,
+                areaBounds.extents.z * m_PushBlockSettings.spawnAreaMarginMultiplier);
+            randomSpawnPos = ground.transform.position + new Vector3(randomPosX, 1f, randomPosZ);
+            if (Physics.CheckBox(randomSpawnPos, new Vector3(2.5f, 0.01f, 2.5f)) == false)
+            {
+                foundNewSpawnLocation = true;
+            }
+            tries++;
+        }
+        return randomSpawnPos;
+    }
+
+
+    /// <summary>
+    /// Called when the agent moves the block into the goal.
+    /// </summary>
+    public void ScoredAGoal()
+    {
+        // We use a reward of 5.
+        AddReward(5f);
+
+        // By marking an agent as done AgentReset() will be called automatically.
+        EndEpisode();
+
+        // Swap ground material for a bit to indicate we scored.
+        StartCoroutine(GoalScoredSwapGroundMaterial(m_PushBlockSettings.goalScoredMaterial, 0.5f));
+    }
+
+    /// <summary>
+    /// Swap ground material, wait time seconds, then swap back to the regular material.
+    /// </summary>
+    IEnumerator GoalScoredSwapGroundMaterial(Material mat, float time)
+    {
+        m_GroundRenderer.material = mat;
+        yield return new WaitForSeconds(time); // Wait for 2 sec
+        m_GroundRenderer.material = m_GroundMaterial;
+    }
+
+    /// <summary>
+    /// Called every step of the engine. Here the agent takes an action.
+    /// </summary>
+    public override void OnActionReceived(ActionBuffers actionBuffers)
+    {
+        // Penalty given each step to encourage agent to finish task quickly.
+        AddReward(-1f / MaxStep);
+    }
+
+    /// <summary>
+    /// Resets the block position and velocities.
+    /// </summary>
+    void ResetBlock()
+    {
+        // Get a random position for the block.
+        block.transform.position = GetRandomSpawnPos();
+
+        // Reset block velocity back to zero.
+        m_BlockRb.velocity = Vector3.zero;
+
+        // Reset block angularVelocity back to zero.
+        m_BlockRb.angularVelocity = Vector3.zero;
+    }
+
+    /// <summary>
+    /// In the editor, if "Reset On Done" is checked then AgentReset() will be
+    /// called automatically anytime we mark done = true in an agent script.
+    /// </summary>
+    public override void OnEpisodeBegin()
+    {
+        var rotation = Random.Range(0, 4);
+        var rotationAngle = rotation * 90f;
+        area.transform.Rotate(new Vector3(0f, rotationAngle, 0f));
+
+        ResetBlock();
+        transform.position = GetRandomSpawnPos();
+        m_AgentRb.velocity = Vector3.zero;
+        m_AgentRb.angularVelocity = Vector3.zero;
+
+        SetResetParameters();
+    }
+
+    public void SetGroundMaterialFriction()
+    {
+        var groundCollider = ground.GetComponent<Collider>();
+
+        groundCollider.material.dynamicFriction = m_ResetParams.GetWithDefault("dynamic_friction", 0);
+        groundCollider.material.staticFriction = m_ResetParams.GetWithDefault("static_friction", 0);
+    }
+
+    public void SetBlockProperties()
+    {
+        var scale = m_ResetParams.GetWithDefault("block_scale", 2);
+        //Set the scale of the block
+        m_BlockRb.transform.localScale = new Vector3(scale, 0.75f, scale);
+
+        // Set the drag of the block
+        m_BlockRb.drag = m_ResetParams.GetWithDefault("block_drag", 0.5f);
+    }
+
+    void SetResetParameters()
+    {
+        SetGroundMaterialFriction();
+        SetBlockProperties();
+    }
+
+}

ML-Agents-Input-Example/Assets/ML-Agents/Examples/PushBlock/Scripts/PushAgentBasic.cs.meta

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ML-Agents-Input-Example/Assets/ML-Agents/Examples/PushBlock/Scripts/PushBlockActions.cs

+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was auto-generated by com.unity.inputsystem:InputActionCodeGenerator
+//     version 1.1.0
+//     from Assets/ML-Agents/Examples/PushBlock/PushBlockActions.inputactions
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine.InputSystem;
+using UnityEngine.InputSystem.Utilities;
+
+public partial class @PushBlockActions : IInputActionCollection2, IDisposable
+{
+    public InputActionAsset asset { get; }
+    public @PushBlockActions()
+    {
+        asset = InputActionAsset.FromJson(@"{
+    ""name"": ""PushBlockActions"",
+    ""maps"": [
+        {
+            ""name"": ""Movement"",
+            ""id"": ""03a2e5d4-ae81-47f1-a575-0779fb7da538"",
+            ""actions"": [
+                {
+                    ""name"": ""movement"",
+                    ""type"": ""Value"",
+                    ""id"": ""5f47cbc6-de46-4d33-93e2-2b1af4f5996d"",
+                    ""expectedControlType"": ""Vector2"",
+                    ""processors"": """",
+                    ""interactions"": """"
+                },
+                {
+                    ""name"": ""jump"",
+                    ""type"": ""Button"",
+                    ""id"": ""ca5eb833-5dfb-4b7c-880d-6118bd5d1378"",
+                    ""expectedControlType"": ""Button"",
+                    ""processors"": """",
+                    ""interactions"": """"
+                }
+            ],
+            ""bindings"": [
+                {
+                    ""name"": ""gamepad_move"",
+                    ""id"": ""477500ef-6d32-4b84-b9f8-158f18bcb906"",
+                    ""path"": ""2DVector"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": """",
+                    ""action"": ""movement"",
+                    ""isComposite"": true,
+                    ""isPartOfComposite"": false
+                },
+                {
+                    ""name"": ""up"",
+                    ""id"": ""6d2537b8-2266-4a50-8575-fb0fe310daa5"",
+                    ""path"": ""<Gamepad>/dpad/up"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""movement"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": true
+                },
+                {
+                    ""name"": ""down"",
+                    ""id"": ""50584c83-beb6-4e90-a453-a635c03a761e"",
+                    ""path"": ""<Gamepad>/dpad/down"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""movement"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": true
+                },
+                {
+                    ""name"": ""left"",
+                    ""id"": ""44408b8f-27e7-4c6d-b078-7536ba020d1a"",
+                    ""path"": ""<Gamepad>/dpad/left"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""movement"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": true
+                },
+                {
+                    ""name"": ""right"",
+                    ""id"": ""f5681423-d3e3-41a5-b85e-0a7642c774aa"",
+                    ""path"": ""<Gamepad>/dpad/right"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""movement"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": true
+                },
+                {
+                    ""name"": ""keyboard_move"",
+                    ""id"": ""6bcba4bf-5ce0-4005-9e6a-0de2487211b0"",
+                    ""path"": ""2DVector"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": """",
+                    ""action"": ""movement"",
+                    ""isComposite"": true,
+                    ""isPartOfComposite"": false
+                },
+                {
+                    ""name"": ""up"",
+                    ""id"": ""63da699e-b354-4e63-b0f8-26fb92abea41"",
+                    ""path"": ""<Keyboard>/w"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""movement"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": true
+                },
+                {
+                    ""name"": ""down"",
+                    ""id"": ""39409748-9002-4aff-9a09-cdc05b9708ad"",
+                    ""path"": ""<Keyboard>/s"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""movement"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": true
+                },
+                {
+                    ""name"": ""left"",
+                    ""id"": ""0afe45fc-dc45-4310-9c73-7dc3c503addf"",
+                    ""path"": ""<Keyboard>/a"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""movement"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": true
+                },
+                {
+                    ""name"": ""right"",
+                    ""id"": ""69fe0335-9e0c-495d-a90d-4b0fcbfd2b34"",
+                    ""path"": ""<Keyboard>/d"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""movement"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": true
+                },
+                {
+                    ""name"": """",
+                    ""id"": ""ab696218-63cd-4eb8-9fe1-48a68e32e92f"",
+                    ""path"": ""<Keyboard>/space"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""jump"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": false
+                },
+                {
+                    ""name"": """",
+                    ""id"": ""7adcb138-5175-4cc4-addc-d2b02cb5f0de"",
+                    ""path"": ""<Gamepad>/buttonSouth"",
+                    ""interactions"": """",
+                    ""processors"": """",
+                    ""groups"": ""Keyboard"",
+                    ""action"": ""jump"",
+                    ""isComposite"": false,
+                    ""isPartOfComposite"": false
+                }
+            ]
+        }
+    ],
+    ""controlSchemes"": [
+        {
+            ""name"": ""Keyboard"",
+            ""bindingGroup"": ""Keyboard"",
+            ""devices"": [
+                {
+                    ""devicePath"": ""<Keyboard>"",
+                    ""isOptional"": true,
+                    ""isOR"": false
+                },
+                {
+                    ""devicePath"": ""<Gamepad>"",
+                    ""isOptional"": true,
+                    ""isOR"": false
+                }
+            ]
+        }
+    ]
+}");
+        // Movement
+        m_Movement = asset.FindActionMap("Movement", throwIfNotFound: true);
+        m_Movement_movement = m_Movement.FindAction("movement", throwIfNotFound: true);
+        m_Movement_jump = m_Movement.FindAction("jump", throwIfNotFound: true);
+    }
+
+    public void Dispose()
+    {
+        UnityEngine.Object.Destroy(asset);
+    }
+
+    public InputBinding? bindingMask
+    {
+        get => asset.bindingMask;
+        set => asset.bindingMask = value;
+    }
+
+    public ReadOnlyArray<InputDevice>? devices
+    {
+        get => asset.devices;
+        set => asset.devices = value;
+    }
+
+    public ReadOnlyArray<InputControlScheme> controlSchemes => asset.controlSchemes;
+
+    public bool Contains(InputAction action)
+    {
+        return asset.Contains(action);
+    }
+
+    public IEnumerator<InputAction> GetEnumerator()
+    {
+        return asset.GetEnumerator();
+    }
+
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        return GetEnumerator();
+    }
+
+    public void Enable()
+    {
+        asset.Enable();
+    }
+
+    public void Disable()
+    {
+        asset.Disable();
+    }
+    public IEnumerable<InputBinding> bindings => asset.bindings;
+
+    public InputAction FindAction(string actionNameOrId, bool throwIfNotFound = false)
+    {
+        return asset.FindAction(actionNameOrId, throwIfNotFound);
+    }
+    public int FindBinding(InputBinding bindingMask, out InputAction action)
+    {
+        return asset.FindBinding(bindingMask, out action);
+    }
+
+    // Movement
+    private readonly InputActionMap m_Movement;
+    private IMovementActions m_MovementActionsCallbackInterface;
+    private readonly InputAction m_Movement_movement;
+    private readonly InputAction m_Movement_jump;
+    public struct MovementActions
+    {
+        private @PushBlockActions m_Wrapper;
+        public MovementActions(@PushBlockActions wrapper) { m_Wrapper = wrapper; }
+        public InputAction @movement => m_Wrapper.m_Movement_movement;
+        public InputAction @jump => m_Wrapper.m_Movement_jump;
+        public InputActionMap Get() { return m_Wrapper.m_Movement; }
+        public void Enable() { Get().Enable(); }
+        public void Disable() { Get().Disable(); }
+        public bool enabled => Get().enabled;
+        public static implicit operator InputActionMap(MovementActions set) { return set.Get(); }
+        public void SetCallbacks(IMovementActions instance)
+        {
+            if (m_Wrapper.m_MovementActionsCallbackInterface != null)
+            {
+                @movement.started -= m_Wrapper.m_MovementActionsCallbackInterface.OnMovement;
+                @movement.performed -= m_Wrapper.m_MovementActionsCallbackInterface.OnMovement;
+                @movement.canceled -= m_Wrapper.m_MovementActionsCallbackInterface.OnMovement;
+                @jump.started -= m_Wrapper.m_MovementActionsCallbackInterface.OnJump;
+                @jump.performed -= m_Wrapper.m_MovementActionsCallbackInterface.OnJump;
+                @jump.canceled -= m_Wrapper.m_MovementActionsCallbackInterface.OnJump;
+            }
+            m_Wrapper.m_MovementActionsCallbackInterface = instance;
+            if (instance != null)
+            {
+                @movement.started += instance.OnMovement;
+                @movement.performed += instance.OnMovement;
+                @movement.canceled += instance.OnMovement;
+                @jump.started += instance.OnJump;
+                @jump.performed += instance.OnJump;
+                @jump.canceled += instance.OnJump;
+            }
+        }
+    }
+    public MovementActions @Movement => new MovementActions(this);
+    private int m_KeyboardSchemeIndex = -1;
+    public InputControlScheme KeyboardScheme
+    {
+        get
+        {
+            if (m_KeyboardSchemeIndex == -1) m_KeyboardSchemeIndex = asset.FindControlSchemeIndex("Keyboard");
+            return asset.controlSchemes[m_KeyboardSchemeIndex];
+        }
+    }
+    public interface IMovementActions
+    {
+        void OnMovement(InputAction.CallbackContext context);
+        void OnJump(InputAction.CallbackContext context);
+    }
+}

ML-Agents-Input-Example/Assets/ML-Agents/Examples/PushBlock/Scripts/PushBlockActions.cs.meta

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ML-Agents-Input-Example/Assets/ML-Agents/Examples/PushBlock/Scripts/PushBlockPlayerController.cs

+using Unity.MLAgents.Extensions.Input;
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+/// <summary>
+/// This class handles the input for the PushBlock Cube character in the PushBlock scene.
+/// Note that the only ML-Agents code here is the implementation of the <see cref="IInputActionAssetProvider"/>.
+/// The <see cref="InputActuatorComponent"/> looks for a component that implements that interface in order to
+/// rebind actions to virtual controllers when training agents or running inference.  This means that you can
+/// keep your input handling code separate from ML-Agents, and have your agent's action space defined by the
+/// actions defined in your project's <see cref="GetInputActionAsset"/>.
+///
+/// If you don't implement <see cref="IInputActionAssetProvider"/> the <see cref="InputActuatorComponent"/> will
+/// look for a <see cref="PlayerInput"/> component on the GameObject it live on.  It will rebind the actions of that
+/// instance of the asset.
+///
+/// It is important to note that if you have multiple components on the same GameObject handling input, you will
+/// need to share the instance of the generated C# <see cref="IInputActionCollection2"/> (named <see cref="m_PushBlockActions"/>
+/// here) in order to ensure that all of your actions are bound correctly for ml-agents training and inference.
+/// </summary>
+public class PushBlockPlayerController : MonoBehaviour, IInputActionAssetProvider
+{
+
+    PushBlockSettings m_PushBlockSettings;
+    public float JumpTime = 0.5f;
+    float m_JumpTimeRemaining;
+    Rigidbody m_PlayerRb;  //cached on initialization
+    PushBlockActions m_PushBlockActions;
+    float m_JumpCoolDownStart;
+
+    void Awake()
+    {
+        m_PushBlockSettings = FindObjectOfType<PushBlockSettings>();
+        LazyInitializeActions();
+
+        // Cache the agent rigidbody
+        m_PlayerRb = GetComponent<Rigidbody>();
+    }
+
+    void LazyInitializeActions()
+    {
+        if (m_PushBlockActions != null)
+        {
+            return;
+        }
+        m_PushBlockActions = new PushBlockActions();
+        m_PushBlockActions.Enable();
+
+        // You can listen to C# events.
+        m_PushBlockActions.Movement.jump.performed += JumpOnperformed;
+    }
+
+    void JumpOnperformed(InputAction.CallbackContext callbackContext)
+    {
+        InnerJump(gameObject.transform);
+    }
+
+    void FixedUpdate()
+    {
+        // Or you can poll the action itself like we do here.
+        InnerMove(gameObject.transform, m_PushBlockActions.Movement.movement.ReadValue<Vector2>());
+        if (m_JumpTimeRemaining < 0)
+        {
+            m_PlayerRb.AddForce(-transform.up * (m_PushBlockSettings.agentJumpForce * 3), ForceMode.Acceleration);
+        }
+        m_JumpTimeRemaining -= Time.fixedDeltaTime;
+    }
+
+    void InnerJump(Transform t)
+    {
+        if (Time.realtimeSinceStartup - m_JumpCoolDownStart > m_PushBlockSettings.agentJumpCoolDown)
+        {
+            m_JumpTimeRemaining = JumpTime;
+            m_PlayerRb.AddForce(t.up * m_PushBlockSettings.agentJumpForce, ForceMode.VelocityChange);
+            m_JumpCoolDownStart = Time.realtimeSinceStartup;
+        }
+    }
+
+    void InnerMove(Transform t, Vector2 v)
+    {
+        var forward = CreateForwardVector(v);
+        var up = CreateUpVector(v);
+        var dirToGo = t.forward * forward;
+        var rotateDir = t.up * up;
+        t.Rotate(rotateDir, Time.deltaTime * 200f);
+        m_PlayerRb.AddForce(dirToGo * m_PushBlockSettings.agentRunSpeed,
+            ForceMode.VelocityChange);
+    }
+
+    static float CreateUpVector(Vector2 move)
+    {
+        return Mathf.Abs(move.x) > Mathf.Abs(move.y) ? move.x : 0f;
+    }
+
+    static float CreateForwardVector(Vector2 move)
+    {
+        return Mathf.Abs(move.y) > Mathf.Abs(move.x) ? move.y : 0f;
+    }
+
+    /// <summary>
+    /// This is the implementation of the <see cref="IInputActionAssetProvider"/> for this class.  We need
+    /// both the <see cref="GetInputActionAsset"/> and the <see cref="IInputActionCollection2"/> if you are
+    /// listening to C# events, Unity Events, or receiving Messages from the Input System Package as those callbacks
+    /// are set up through the generated <see cref="IInputActionCollection2"/>.
+    /// </summary>
+    /// <returns></returns>
+    public (InputActionAsset, IInputActionCollection2) GetInputActionAsset()
+    {
+        LazyInitializeActions();
+        return (m_PushBlockActions.asset, m_PushBlockActions);
+    }
+}

ML-Agents-Input-Example/Assets/ML-Agents/Examples/PushBlock/Scripts/PushBlockPlayerController.cs.meta

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ML-Agents-Input-Example/Assets/ML-Agents/Examples/PushBlock/Scripts/PushBlockSettings.cs

+using UnityEngine;
+
+public class PushBlockSettings : MonoBehaviour
+{
+    /// <summary>
+    /// The "walking speed" of the agents in the scene.
+    /// </summary>
+    public float agentRunSpeed;
+
+    /// <summary>
+    /// The agent rotation speed.
+    /// Every agent will use this setting.
+    /// </summary>
+    public float agentRotationSpeed;
+
+    public float agentJumpForce;
+
+    public float agentJumpCoolDown;
+
+    /// <summary>
+    /// The spawn area margin multiplier.
+    /// ex: .9 means 90% of spawn area will be used.
+    /// .1 margin will be left (so players don't spawn off of the edge).
+    /// The higher this value, the longer training time required.
+    /// </summary>
+    public float spawnAreaMarginMultiplier;
+
+    /// <summary>
+    /// When a goal is scored the ground will switch to this
+    /// material for a few seconds.
+    /// </summary>
+    public Material goalScoredMaterial;
+
+    /// <summary>
+    /// When an agent fails, the ground will turn this material for a few seconds.
+    /// </summary>
+    public Material failMaterial;
+
+}

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