using UnityEngine;

namespace ECM2.Examples.ToggleGravityDirection
{
	public class ToggleCharacterGravityDirection : MonoBehaviour
	{
		private Character _character;

		private void RotateCharacterToGravity(float deltaTime)
		{
			Vector3 toDirection = -1f * _character.GetGravityDirection();
			Vector3 upVector = _character.GetUpVector();
			Quaternion rotation = _character.GetRotation();
			Quaternion to = Quaternion.FromToRotation(upVector, toDirection) * rotation;
			rotation = Quaternion.RotateTowards(rotation, to, _character.rotationRate * deltaTime);
			_character.SetRotation(rotation);
		}

		private void OnAfterSimulationUpdated(float deltaTime)
		{
			RotateCharacterToGravity(deltaTime);
		}

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

		private void OnEnable()
		{
			_character.AfterSimulationUpdated += OnAfterSimulationUpdated;
		}

		private void OnDisable()
		{
			_character.AfterSimulationUpdated -= OnAfterSimulationUpdated;
		}

		private void Update()
		{
			if (_character.IsFalling() && Input.GetKeyDown(KeyCode.E))
			{
				_character.gravityScale *= -1f;
			}
		}
	}
}