refactored controller module to allow expansion

src/lib/controller/player.rs

@@ -0,0 +1,32 @@
+use std::io::{stdin, stdout};
+use termion::{event::Key, input::TermRead, raw::IntoRawMode};
+
+use super::{Controller, ControllerError, Move};
+use crate::lib::grid::Grid;
+
+pub struct PlayerController;
+
+impl PlayerController {
+	pub fn new() -> Self {
+		Self
+	}
+}
+
+impl Controller for PlayerController {
+	fn next_move(&mut self, _grid: &Grid) -> Result<Move, ControllerError> {
+		let stdin = stdin();
+		let mut _stdout = stdout().into_raw_mode().unwrap();
+		for c in stdin.keys() {
+			let movement = match c.unwrap() {
+				Key::Char('q') => return Err(ControllerError::ExitSignal),
+				Key::Left => Move::LEFT,
+				Key::Right => Move::RIGHT,
+				Key::Up => Move::UP,
+				Key::Down => Move::DOWN,
+				_ => continue,
+			};
+			return Ok(movement);
+		}
+		unreachable!()
+	}
+}