Scampz/Assets/Scripts/Input/CharacterInputController.cs

using Scampz.GameJam.Assets.Scripts.Player;
using UnityEngine;
using UnityEngine.InputSystem;

namespace Scampz.GameJam.Assets.Scripts
{
  public class CharacterInputController : MonoBehaviour
  {
    private CharacterController _controller;
    public float Speed = 10f;
    public float RotateSpeed = 720.0f;
    private float _ySpeed = 0f;
    private PlayerState _playerState;
    public PlayerControls playerControls;
    private InputAction move;
    private InputAction sprint;

    public void EnableActions()
    {
      move.Enable();
    }

    public void DisableActions()
    {
      move.Disable();
    }

    private void Awake()
    {
      playerControls = new PlayerControls();
    }

    private void OnEnable()
    {
      move = playerControls.Player.Move;
      sprint = playerControls.Player.Sprint;
      move.Enable();
      sprint.Enable();
    }

    private void OnDisable()
    {
      move.Disable();
      sprint.Disable();
    }

    private void Start()
    {
      _controller = GetComponent<CharacterController>();
      _playerState = GetComponent<PlayerState>();
    }

    void Update()
    {
      Move();
    }

    void Move()
    {
      var movementSpeed = Speed;
      if (sprint.IsPressed())
        movementSpeed *= 2;
      var movement = move.ReadValue<Vector2>();
      var movementDirection = new Vector3(-movement.x, 0, -movement.y);
      var magnitude = Mathf.Clamp01(movementDirection.magnitude) * movementSpeed;
      movementDirection.Normalize();
      _ySpeed += Physics.gravity.y * Time.deltaTime;

      if (_controller.isGrounded)
        _ySpeed -= 0.5f;

      var velocity = movementDirection * magnitude;
      velocity = AdjustVelocityToSlope(velocity);
      velocity.y += _ySpeed;

      if (_playerState.CanMove)
        _controller.Move(velocity * Time.deltaTime);

      if (movementDirection != Vector3.zero)
      {
        var ray = new Ray(transform.position, Vector3.down);
        Physics.Raycast(ray, out var hitInfo, 5f);
        var toRotation = Quaternion.LookRotation(movementDirection, Vector3.up);
        toRotation.x = Quaternion.LookRotation(Vector3.Cross(transform.right, hitInfo.normal)).x;
        transform.rotation = Quaternion.RotateTowards(transform.rotation, toRotation, RotateSpeed * Time.deltaTime);
      }
    }

    private Vector3 AdjustVelocityToSlope(Vector3 velocity)
    {
      var ray = new Ray(transform.position, Vector3.down);

      if (Physics.Raycast(ray, out var hitInfo, 5f))
      {
        var slopeRotation = Quaternion.FromToRotation(Vector3.up, hitInfo.normal);
        var adjustedVelocity = slopeRotation * velocity;
        if (adjustedVelocity.y < 0)
          return adjustedVelocity;
      }

      return velocity;
    }
  }
}