InputSystemRebindActionUI/InputManager.cs at main · Silpux/InputSystemRebindActionUI · GitHub

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using UnityEngine;
using UnityEngine.InputSystem;
using System;
using TMPro;

public static class InputManager{

    private static PlayerInputActions inputActions;
    public static PlayerInputActions InputActions => inputActions ??= new();

    private static InputActionRebindingExtensions.RebindingOperation operation;

    public static event Action<InputAction, int> onRebindStarted;
    public static event Action onRebindCompleted;
    public static event Action onRebindCanceled;

    static InputManager(){
        LoadBindingsOverrides();
    }

    public static void StartInteractiveRebind(string actionName, int bindingIndex, TMP_Text statusText, TMP_Text bindingText, GameObject rebindOverlay){

        InputAction action = inputActions.asset.FindAction(actionName);

        if(action is null){
            Debug.LogWarning("Input action is null");
            return;
        }

        if(action.bindings.Count <= bindingIndex){
            Debug.LogWarning($"Invalid binding index for {action.name}");
            return;
        }

        if(action.bindings[bindingIndex].isComposite){

            int firstIndex = bindingIndex + 1;

            if(firstIndex < action.bindings.Count && action.bindings[firstIndex].isPartOfComposite){
                PerformInteractiveRebind(action, firstIndex, statusText, bindingText, rebindOverlay, true);
            }

        }
        else{
            PerformInteractiveRebind(action, bindingIndex, statusText, bindingText, rebindOverlay, false);
        }
    }

    private static void PerformInteractiveRebind(InputAction action, int bindingIndex, TMP_Text statusText, TMP_Text bindingText, GameObject rebindOverlay, bool compositeBinding){

        void CleanUp(){
            operation?.Dispose();
            operation = null;
            action.Enable();
        }

        if(action is null){
            Debug.LogWarning("Input action is null");
            return;
        }

        if(bindingIndex < 0){
            Debug.LogWarning($"Invalid binding index for {action.name}");
            return;
        }

        operation?.Cancel();

        action.Disable();

        operation = action.PerformInteractiveRebinding(bindingIndex)
            .OnComplete(operation =>{

                CleanUp();

                if(rebindOverlay != null){
                    rebindOverlay.SetActive(false);
                }

                if(compositeBinding){
                    int nextBindingIndex = bindingIndex + 1;
                    if(nextBindingIndex < action.bindings.Count && action.bindings[nextBindingIndex].isPartOfComposite){
                        PerformInteractiveRebind(action, nextBindingIndex, statusText, bindingText, rebindOverlay, compositeBinding);
                    }
                }

                SaveBindingsOverrides();
                onRebindCompleted?.Invoke();

            })
            .OnCancel(operation =>{

                CleanUp();
                if(rebindOverlay != null){
                    rebindOverlay.SetActive(false);
                }

                onRebindCanceled?.Invoke();

            })
            .WithCancelingThrough("<Keyboard>/escape");

        string partName = default;

        if(action.bindings[bindingIndex].isPartOfComposite){
            partName = $"Binding '{action.bindings[bindingIndex].name}'. ";
        }

        if(rebindOverlay != null){
            rebindOverlay.SetActive(true);
        }

        if(statusText != null){
            string text = !string.IsNullOrEmpty(operation.expectedControlType)
                ? $"{partName}Waiting for {operation.expectedControlType} input..."
                : $"{partName}Waiting for input...";
            statusText.text = text;
        }

        if((rebindOverlay == null || statusText == null) && bindingText != null){
            bindingText.text = "Waiting...";
        }

        onRebindStarted?.Invoke(action, bindingIndex);
        operation.Start();

    }

    public static string GetBindingName(string actionName, int bindingIndex, InputBinding.DisplayStringOptions displayStringOptions = default){

        InputAction action = InputActions.asset.FindAction(actionName);
        return action.GetBindingDisplayString(bindingIndex, displayStringOptions);

    }

    private static void SaveBindingsOverrides(){
        PlayerPrefs.SetString("rebinds", InputActions.SaveBindingOverridesAsJson());
    }

    private static void LoadBindingsOverrides(){

        string rebinds = PlayerPrefs.GetString("rebinds");

        if(!string.IsNullOrEmpty(rebinds)){
            InputActions.LoadBindingOverridesFromJson(rebinds);
        }

    }

    public static void ResetToDefault(string actionName, int bindingIndex){

        InputAction action = InputActions.asset.FindAction(actionName);

        if(action is null || action.bindings.Count <= bindingIndex){
            Debug.Log("Could not find action or binding");
            return;
        }

        if(action.bindings[bindingIndex].isComposite){
            for(int i = bindingIndex; i < action.bindings.Count && action.bindings[i].isComposite; i++){
                action.RemoveBindingOverride(i);
            }
        }
        else{
            action.RemoveBindingOverride(bindingIndex);
        }

        SaveBindingsOverrides();

    }

}