using UnityEngine;

namespace ECM2.Walkthrough.Ex42
{
	public class SprintAbility : MonoBehaviour
	{
		[Space(15f)]
		public float maxSprintSpeed = 10f;

		private Character _character;

		private bool _isSprinting;

		private bool _sprintInputPressed;

		private float _cachedMaxWalkSpeed;

		public void Sprint()
		{
			_sprintInputPressed = true;
		}

		public void StopSprinting()
		{
			_sprintInputPressed = false;
		}

		public bool IsSprinting()
		{
			return _isSprinting;
		}

		private bool CanSprint()
		{
			if (_character.IsWalking())
			{
				return !_character.IsCrouched();
			}
			return false;
		}

		private void CheckSprintInput()
		{
			if (!_isSprinting && _sprintInputPressed && CanSprint())
			{
				_isSprinting = true;
				_cachedMaxWalkSpeed = _character.maxWalkSpeed;
				_character.maxWalkSpeed = maxSprintSpeed;
			}
			else if (_isSprinting && (!_sprintInputPressed || !CanSprint()))
			{
				_isSprinting = false;
				_character.maxWalkSpeed = _cachedMaxWalkSpeed;
			}
		}

		private void OnBeforeSimulationUpdated(float deltaTime)
		{
			CheckSprintInput();
		}

		private void Awake()
		{
			_character = GetComponent<Character>();
		}

		private void OnEnable()
		{
			_character.BeforeSimulationUpdated += OnBeforeSimulationUpdated;
		}

		private void OnDisable()
		{
			_character.BeforeSimulationUpdated -= OnBeforeSimulationUpdated;
		}
	}
}