Weird issue with InputSystem and script

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I am trying to learn Unity’s Input-System. I am working on a character controller which can switch from first to third person using Cinemachine. I created a PlayerControls.inputactions asset which generated a PlayerControls.cs file. I have a InputManager script with a public PlayerControls variable. There are no shown errors, but when I attach it to a game object in the scene, the InputManager script is blank on the Inspector.

Can someone help me figure this out?

I have tried reinstalling unity, the input system package, etc.

InputManager.cs

using UnityEngine;
using UnityEngine.InputSystem;

public class InputManager : MonoBehaviour
{
    public PlayerControls controls; // Directly reference the PlayerControls asset

    void OnEnable()
    {
        // Use the controls directly without loading
        controls.Gameplay.Enable();
    }

    void OnDisable()
    {
        controls.Gameplay.Disable();
    }

    // Implement callback methods for your actions here
}

PlayerControls.cs

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was auto-generated by com.unity.inputsystem:InputActionCodeGenerator
//     version 1.7.0
//     from Assets/Scripts/PlayerControls.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 @PlayerControls: IInputActionCollection2, IDisposable
{
    public InputActionAsset asset { get; }
    public @PlayerControls()
    {
        asset = InputActionAsset.FromJson(@"{
    ""name"": ""PlayerControls"",
    ""maps"": [
        {
            ""name"": ""Gameplay"",
            ""id"": ""3dc1c7e0-a6c6-473b-8d8b-1aa58ef67006"",
            ""actions"": [
                {
                    ""name"": ""Move"",
                    ""type"": ""Value"",
                    ""id"": ""d13880ed-0142-468b-867f-a2a1fc8cfb6f"",
                    ""expectedControlType"": ""Vector2"",
                    ""processors"": """",
                    ""interactions"": """",
                    ""initialStateCheck"": true
                },
                {
                    ""name"": ""TogglePerspective"",
                    ""type"": ""Button"",
                    ""id"": ""67d8fe40-cbab-42c7-a78a-c46ddf064962"",
                    ""expectedControlType"": ""Button"",
                    ""processors"": """",
                    ""interactions"": """",
                    ""initialStateCheck"": false
                }
            ],
            ""bindings"": [
                {
                    ""name"": ""2D Vector"",
                    ""id"": ""cab8e8fd-f350-4800-9e0e-b4b8766d31c2"",
                    ""path"": ""2DVector"",
                    ""interactions"": """",
                    ""processors"": """",
                    ""groups"": """",
                    ""action"": ""Move"",
                    ""isComposite"": true,
                    ""isPartOfComposite"": false
                },
                {
                    ""name"": ""up"",
                    ""id"": ""95ce44c4-fa27-4e53-8e86-9782ca298d64"",
                    ""path"": ""<Keyboard>/w"",
                    ""interactions"": """",
                    ""processors"": """",
                    ""groups"": """",
                    ""action"": ""Move"",
                    ""isComposite"": false,
                    ""isPartOfComposite"": true
                },
                {
                    ""name"": ""down"",
                    ""id"": ""b3b3368a-aaa3-48fd-9eeb-c24fa3411cf6"",
                    ""path"": ""<Keyboard>/s"",
                    ""interactions"": """",
                    ""processors"": """",
                    ""groups"": """",
                    ""action"": ""Move"",
                    ""isComposite"": false,
                    ""isPartOfComposite"": true
                },
                {
                    ""name"": ""left"",
                    ""id"": ""480db361-b069-4bcc-9c72-9eb37472e302"",
                    ""path"": ""<Keyboard>/a"",
                    ""interactions"": """",
                    ""processors"": """",
                    ""groups"": """",
                    ""action"": ""Move"",
                    ""isComposite"": false,
                    ""isPartOfComposite"": true
                },
                {
                    ""name"": ""right"",
                    ""id"": ""09e1bace-a124-44c5-bba4-82881c2f4f47"",
                    ""path"": ""<Keyboard>/d"",
                    ""interactions"": """",
                    ""processors"": """",
                    ""groups"": """",
                    ""action"": ""Move"",
                    ""isComposite"": false,
                    ""isPartOfComposite"": true
                },
                {
                    ""name"": """",
                    ""id"": ""825fb12f-f44f-4a6b-aed8-e3238b06c787"",
                    ""path"": ""<Keyboard>/t"",
                    ""interactions"": """",
                    ""processors"": """",
                    ""groups"": """",
                    ""action"": ""TogglePerspective"",
                    ""isComposite"": false,
                    ""isPartOfComposite"": false
                }
            ]
        }
    ],
    ""controlSchemes"": []
}");
        // Gameplay
        m_Gameplay = asset.FindActionMap("Gameplay", throwIfNotFound: true);
        m_Gameplay_Move = m_Gameplay.FindAction("Move", throwIfNotFound: true);
        m_Gameplay_TogglePerspective = m_Gameplay.FindAction("TogglePerspective", 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);
    }

    // Gameplay
    private readonly InputActionMap m_Gameplay;
    private List<IGameplayActions> m_GameplayActionsCallbackInterfaces = new List<IGameplayActions>();
    private readonly InputAction m_Gameplay_Move;
    private readonly InputAction m_Gameplay_TogglePerspective;
    public struct GameplayActions
    {
        private @PlayerControls m_Wrapper;
        public GameplayActions(@PlayerControls wrapper) { m_Wrapper = wrapper; }
        public InputAction @Move => m_Wrapper.m_Gameplay_Move;
        public InputAction @TogglePerspective => m_Wrapper.m_Gameplay_TogglePerspective;
        public InputActionMap Get() { return m_Wrapper.m_Gameplay; }
        public void Enable() { Get().Enable(); }
        public void Disable() { Get().Disable(); }
        public bool enabled => Get().enabled;
        public static implicit operator InputActionMap(GameplayActions set) { return set.Get(); }
        public void AddCallbacks(IGameplayActions instance)
        {
            if (instance == null || m_Wrapper.m_GameplayActionsCallbackInterfaces.Contains(instance)) return;
            m_Wrapper.m_GameplayActionsCallbackInterfaces.Add(instance);
            @Move.started += instance.OnMove;
            @Move.performed += instance.OnMove;
            @Move.canceled += instance.OnMove;
            @TogglePerspective.started += instance.OnTogglePerspective;
            @TogglePerspective.performed += instance.OnTogglePerspective;
            @TogglePerspective.canceled += instance.OnTogglePerspective;
        }

        private void UnregisterCallbacks(IGameplayActions instance)
        {
            @Move.started -= instance.OnMove;
            @Move.performed -= instance.OnMove;
            @Move.canceled -= instance.OnMove;
            @TogglePerspective.started -= instance.OnTogglePerspective;
            @TogglePerspective.performed -= instance.OnTogglePerspective;
            @TogglePerspective.canceled -= instance.OnTogglePerspective;
        }

        public void RemoveCallbacks(IGameplayActions instance)
        {
            if (m_Wrapper.m_GameplayActionsCallbackInterfaces.Remove(instance))
                UnregisterCallbacks(instance);
        }

        public void SetCallbacks(IGameplayActions instance)
        {
            foreach (var item in m_Wrapper.m_GameplayActionsCallbackInterfaces)
                UnregisterCallbacks(item);
            m_Wrapper.m_GameplayActionsCallbackInterfaces.Clear();
            AddCallbacks(instance);
        }
    }
    public GameplayActions @Gameplay => new GameplayActions(this);
    public interface IGameplayActions
    {
        void OnMove(InputAction.CallbackContext context);
        void OnTogglePerspective(InputAction.CallbackContext context);
    }
}

I am using #Unity-2022-3-LTS.20f1 and Input-System 1.7.0

NfNCabGHcZom
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2 Answers

2
2

Are you trying to access the InputActions asset directly as described here?

https://docs.unity3d.com/Packages/com.unity.inputsystem@1.7/manual/Workflow-ActionsAsset.html

It looks like you need to specify InputActionAsset, not PlayerControls.

3

I am using Phind AI to walk me through and teach me. That is what I assumed as well, but this is the response I get to that same question.

An InputActionAsset in Unity is a container for input actions, bindings, and control schemes. It’s a centralized place to manage all your input configurations. You can create an InputActionAsset by right-clicking in the Project window or going to Assets > Create > Input Actions from Unity’s main menu. This asset is stored in your project folder and can be edited directly in the Unity Editor or through code

https://christopherhilton88.medium.com/what-is-an-input-action-asset-in-unitys-new-input-system-b836e0016ab

Using PlayerControls with InputActionAsset

When you enable the “Generate C# Class” option in the .inputactions asset’s importer properties, Unity automatically generates a C# class (e.g., PlayerControls) that encapsulates the data from your .inputactions asset. This class is designed to work seamlessly with the input system, providing a convenient way to access and manipulate input actions within your scripts

Correct Approach

If you’re trying to use the PlayerControls class in your InputManager script and the “Controls” field is not showing up, it’s likely because the field is expecting an InputActionAsset type instead of a specific generated class like PlayerControls. This is a common confusion, but the generated class (PlayerControls) is a representation of your input actions and is designed to be used directly in your scripts for handling input.

EDIT: I figured it out, thanks to your comment and reference to the docs. I was attempting to use the C# wrapper method which doesn’t require making a public variable in the inspector at all. The docs provided an excellent example which solved my issue. Thank you.

Glad to help. The official documentation is always a good place to start.

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