servius/snake-rs
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Added way to print the snake with ascii extended

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But ncurses doesn't seem to support ascii extended
so it looks bizzare
This commit is contained in:
Uttarayan Mondal
2021-01-20 20:52:17 +05:30
parent 295fba633e
commit c2eff08c9f
8 changed files with 109 additions and 20 deletions
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src/game/backend.rs
+18
View File
@@ -2,6 +2,7 @@ extern crate rand;
use core::iter::Iterator;
use rand::Rng;
use std::collections::LinkedList;
use std::ops::Sub;
use std::thread::sleep;
use std::time::Duration;
pub enum Direction {
@@ -58,6 +59,12 @@ impl PartialEq for Cell {
}
}
}
impl Sub for Cell {
type Output = (i32, i32);
fn sub(self, rhs: Cell) -> (i32, i32) {
return (self.line - rhs.line, self.col - rhs.col);
}
}
impl Cell {
pub fn new(l: i32, c: i32, t: CellType) -> Cell {
Cell {
@@ -80,6 +87,15 @@ impl Cell {
pub fn chtype(&mut self, ctype: CellType) {
self.ctype = ctype;
}
pub fn is_adjacent(&self, other: &Cell) -> Option<Direction> {
match *self - *other {
(0, 1) => Some(Direction::Left),
(1, 0) => Some(Direction::Down),
(-1, 0) => Some(Direction::Right),
(0, -1) => Some(Direction::Up),
_ => None,
}
}
}
impl Copy for CellType {}
@@ -136,6 +152,7 @@ impl Board {
let mut snake_iter = snake.iter();
snake_iter.next();
for snake_cell in snake_iter {
// O(n) ; don't know how to reduce this complexity
if snake.posyx() == snake_cell.posyx() {
self.gamestate = GameState::Failed(FailState::Snake);
return true;
@@ -167,6 +184,7 @@ impl Board {
let mut snake_iter = snake.iter();
for snake_cell in snake_iter.next() {
if *snake_cell == food {
// O(n) ; I think this is nessacary/ I don't know how to reduce the order
// if food collides with the snake body then set food to a new random position and set spawned food to false
// so that the snake_iter is started again from the front of the snake
food = Cell::random(self.maxlines, self.maxcols);
src/game/frontend.rs
+62 -15
View File
@@ -1,7 +1,8 @@
// use ncurses::*;
use crate::game::backend::{Board, Snake};
use crate::game::backend::{Board, Cell, Direction, Snake};
use ncurses::{
box_, delwin, keypad, mvwaddstr, newwin, stdscr, wborder, wclrtobot, wmove, wrefresh, WINDOW,
box_, delwin, keypad, mvwaddstr, newwin, stdscr, waddstr, wborder, wclrtobot, wmove, wrefresh,
WINDOW,
};
pub fn game_window(mlines: i32, mcols: i32, vmargin: i32, hmargin: i32) -> WINDOW {
let game_win: WINDOW;
@@ -30,13 +31,58 @@ pub fn destroy_window(win: WINDOW) {
pub fn draw_snake(snake: &Snake, game_win: WINDOW) {
// let mut snake_iter = snake.iter();
let (mut prev, mut current, _next): (&Cell, &Cell, &Cell);
let mut snake_iter = snake.iter();
wmove(game_win, 0, 0);
wclrtobot(game_win);
box_(game_win, 0, 0);
for snake_cell in snake.iter() {
let (snake_l, snake_c): (i32, i32) = snake_cell.posyx();
mvwaddstr(game_win, snake_l, snake_c, "o");
// I want to draw the snake as ascii box charachters
// So I'll need to know the last and next cell of the snake to draw the current snake_cell
// For some reason the snake goes invisible after the first food
prev = snake_iter.next().unwrap(); // currently this should be head. On initial run this should be the only snake_cell
mvwaddstr(game_win, prev.posyx().0, prev.posyx().1, &format!("H"));
let _current = snake_iter.next();
// current = match _current {
// Some(cell) => cell,
// None => return,
// };
if _current.is_some() {
current = _current.unwrap();
} else {
return;
} // the match is equivalent to this block of code
// this should be none in the initial run
// as of now this will panic as soon as the game starts
// I need to match this with Some(Cell) and None and if
// none then just straight exit from the function
// The head is never in current so the head is not being printed as of now
for next in snake_iter {
// O(n) the whole snake is redrawn every single tick
let (snake_l, snake_c): (i32, i32) = current.posyx();
// mvwaddstr(game_win, snake_l, snake_c, "o");
let snake_char = match (
prev.is_adjacent(current).unwrap(),
next.is_adjacent(current).unwrap(),
) {
(Direction::Up, Direction::Down) | (Direction::Down, Direction::Up) => "║", //186, //boxdraw double vertical line ║ code 186
(Direction::Up, Direction::Left) | (Direction::Left, Direction::Left) => "╝", //188, // ╝
(Direction::Up, Direction::Right) | (Direction::Right, Direction::Up) => "╚", //200, // ╚
(Direction::Down, Direction::Left) | (Direction::Left, Direction::Down) => "╗", //187, // ╗
(Direction::Down, Direction::Right) | (Direction::Right, Direction::Down) => "╔", //,201, // ╔
(Direction::Left, Direction::Right) | (Direction::Right, Direction::Left) => "═", //205 ═
_ => " ",
};
mvwaddstr(
game_win, snake_l, snake_c, // &format!("{}", snake_char as char),
// &format!("{}", snake_char),
"o",
);
prev = current;
current = next;
}
mvwaddstr(game_win, current.posyx().0, current.posyx().1, "t");
wrefresh(game_win);
}
@@ -60,15 +106,16 @@ pub fn _log(snake: &Snake, board: &Board) {
// ),
// );
// for snake_cell in snake.iter() {
// let (scl, scc): (i32, i32) = snake_cell.posyx();
// waddstr(stdscr(), &format!("cell: {} {} ", scl, scc));
// }
// mvwaddstr(
// stdscr(),
// 2,
// 0,
// &format!("snake_size {}", snake.iter().size_hint().0),
// );
wmove(stdscr(), 2, 0);
for snake_cell in snake.iter() {
let (scl, scc): (i32, i32) = snake_cell.posyx();
waddstr(stdscr(), &format!("cell: {} {} ", scl, scc));
}
mvwaddstr(
stdscr(),
3,
0,
&format!("snake_size {}", snake.iter().size_hint().0),
);
wrefresh(stdscr());
}
src/game/mod.rs
+2 -2
View File
@@ -22,9 +22,9 @@ pub fn start() {
let mut board = Board::new(mlines - vmargin * 2, mcols - hmargin * 2);
nodelay(game_win, true);
loop {
frontend::draw_snake(&snake, game_win);
frontend::draw_snake(&snake, game_win); // always draw snake before board because the snake will clear the game win
frontend::draw_board(&board, game_win);
// frontend::_log(&snake, &board);
frontend::_log(&snake, &board);
if board.check_collision(&snake) {
// Add stuff here to show the score and
// how You lose screen