using UnityEngine;

namespace ECM2.Examples.Glide
{
	public class GlideAbility : MonoBehaviour
	{
		public bool canEverGlide = true;

		public float maxFallSpeedGliding = 1f;

		private Character _character;

		protected bool _glideInputPressed;

		protected bool _isGliding;

		public bool glideInputPressed => _glideInputPressed;

		public virtual bool IsGliding()
		{
			return _isGliding;
		}

		public virtual void Glide()
		{
			_glideInputPressed = true;
		}

		public virtual void StopGliding()
		{
			_glideInputPressed = false;
		}

		protected virtual bool IsGlideAllowed()
		{
			if (canEverGlide)
			{
				return _character.IsFalling();
			}
			return false;
		}

		protected virtual bool CanGlide()
		{
			bool flag = IsGlideAllowed();
			if (flag)
			{
				Vector3 rhs = -_character.GetGravityDirection();
				flag = Vector3.Dot(_character.GetVelocity(), rhs) < 0f;
			}
			return flag;
		}

		protected virtual void CheckGlideInput()
		{
			if (!_isGliding && _glideInputPressed && CanGlide())
			{
				_isGliding = true;
				_character.maxFallSpeed = maxFallSpeedGliding;
			}
			else if (_isGliding && (!_glideInputPressed || !CanGlide()))
			{
				_isGliding = false;
				_character.maxFallSpeed = 40f;
			}
		}

		private void OnBeforeCharacterSimulationUpdated(float deltaTime)
		{
			CheckGlideInput();
		}

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

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

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