pub mod ferris;

use crate::prelude::*;
use crate::std_bis::*;

use parity_scale_codec::{Decode, Encode};

pub mod traits {
	use super::*;

	pub trait Entity {}

	pub trait Walker {
		fn walk(
			&mut self,
			board: &Board,
			direction: Direction,
		) -> Result<Position, (Position, WalkError)>;
	}
}

#[derive(Debug)]
pub enum Entity {
	Ferris(Box<ferris::Ferris>),
}

#[derive(Clone, Debug, Decode, Encode, Eq, PartialEq)]
pub enum WalkError {
	OutOfBoard,
}

impl sp_runtime_interface::pass_by::PassBy for WalkError {
	type PassBy = sp_runtime_interface::pass_by::Codec<Self>;
}