Use timer instead of sleeping
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parent
c2cb3b4915
commit
5aa2a67c17
162
src/main.rs
162
src/main.rs
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@ -2,7 +2,7 @@ use cat_box::{draw_text, get_keyboard_state, Game, Sprite, SpriteCollection};
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use rand::thread_rng;
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use rand::Rng;
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use sdl2::keyboard::Scancode;
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use std::time::Duration;
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use std::time::Instant;
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#[derive(Copy, Clone, Debug, Eq, PartialEq)]
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enum Direction {
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@ -41,6 +41,8 @@ fn main() {
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let mut score = 0u64;
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let mut time = Instant::now();
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game.run(|ctx| {
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draw_text(
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ctx,
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@ -72,95 +74,97 @@ fn main() {
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};
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}
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{
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let mut last_part = snake[0].position();
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if time.elapsed().as_millis() >= 125 {
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{
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let mut last_part = snake[0].position();
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for s in snake.iter().skip(1) {
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let (lastx, lasty) = last_part;
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let (x, y) = s.position();
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let (xdiff, ydiff) = (lastx - x, y - lasty);
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last_part = s.position();
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s.translate((xdiff, ydiff));
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for s in snake.iter().skip(1) {
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let (lastx, lasty) = last_part;
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let (x, y) = s.position();
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let (xdiff, ydiff) = (lastx - x, y - lasty);
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last_part = s.position();
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s.translate((xdiff, ydiff));
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}
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}
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}
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// The snake head needs to be moved after the body or else the body will just collapse into the head
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match dir {
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Direction::Up => {
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snake[0].translate((0, 37));
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}
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Direction::Left => {
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snake[0].translate((-37, 0));
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}
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Direction::Down => {
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snake[0].translate((0, -37));
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}
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Direction::Right => {
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snake[0].translate((37, 0));
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}
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};
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{
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let hitted = cat_box::physics::check_for_collision_with_collection(&snake[0], &snake);
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if hitted.len() > 1 {
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println!("Game over!");
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println!("Your score was: {}", score);
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game.terminate();
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}
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}
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if !cat_box::physics::check_for_collision_with_collection(&apple, &snake).is_empty() {
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let x = thread_rng().gen_range(0..=27) * 37;
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let y = thread_rng().gen_range(0..=27) * 37;
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let (currx, curry) = apple.position();
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let (xdiff, ydiff) = (x - currx, curry - y);
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apple.translate((xdiff, ydiff));
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let second_to_last = snake[snake.len() - 2].position();
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let last = snake[snake.len() - 1].position();
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let direc = check_direction(last, second_to_last);
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let (newx, newy) = match direc {
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Direction::Left => (last.0 - 37, last.1),
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Direction::Right => (last.0 + 37, last.1),
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Direction::Up => (last.0, last.1 - 37),
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Direction::Down => (last.0, last.1 + 37),
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// The snake head needs to be moved after the body or else the body will just collapse into the head
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match dir {
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Direction::Up => {
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snake[0].translate((0, 37));
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}
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Direction::Left => {
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snake[0].translate((-37, 0));
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}
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Direction::Down => {
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snake[0].translate((0, -37));
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}
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Direction::Right => {
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snake[0].translate((37, 0));
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}
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};
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let s = Sprite::new("snakecell.png", newx, newy).unwrap();
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snake.push(s);
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score += 1;
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}
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{
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let (mut x, mut y) = snake[0].position();
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x /= 37;
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y /= 37;
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if dir == Direction::Left || dir == Direction::Right {
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if x <= 0 {
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let diff = (27 * 37) - (x * 37);
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snake[0].translate((diff, 0));
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} else if x >= 27 {
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let diff = 0 - (x * 37);
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snake[0].translate((diff, 0));
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{
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let hitted =
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cat_box::physics::check_for_collision_with_collection(&snake[0], &snake);
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if hitted.len() > 1 {
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println!("Game over!");
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println!("Your score was: {}", score);
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game.terminate();
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}
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}
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if dir == Direction::Up || dir == Direction::Down {
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if y <= 0 {
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let diff = (y * 37) - (27 * 37);
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snake[0].translate((0, diff));
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} else if y >= 27 {
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snake[0].translate((0, (y * 37)));
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if !cat_box::physics::check_for_collision_with_collection(&apple, &snake).is_empty() {
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let x = thread_rng().gen_range(0..=27) * 37;
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let y = thread_rng().gen_range(0..=27) * 37;
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let (currx, curry) = apple.position();
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let (xdiff, ydiff) = (x - currx, curry - y);
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apple.translate((xdiff, ydiff));
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let second_to_last = snake[snake.len() - 2].position();
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let last = snake[snake.len() - 1].position();
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let direc = check_direction(last, second_to_last);
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let (newx, newy) = match direc {
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Direction::Left => (last.0 - 37, last.1),
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Direction::Right => (last.0 + 37, last.1),
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Direction::Up => (last.0, last.1 - 37),
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Direction::Down => (last.0, last.1 + 37),
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};
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let s = Sprite::new("snakecell.png", newx, newy).unwrap();
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snake.push(s);
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score += 1;
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}
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{
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let (mut x, mut y) = snake[0].position();
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x /= 37;
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y /= 37;
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if dir == Direction::Left || dir == Direction::Right {
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if x <= 0 {
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let diff = (27 * 37) - (x * 37);
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snake[0].translate((diff, 0));
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} else if x >= 27 {
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let diff = 0 - (x * 37);
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snake[0].translate((diff, 0));
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}
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}
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if dir == Direction::Up || dir == Direction::Down {
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if y <= 0 {
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let diff = (y * 37) - (27 * 37);
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snake[0].translate((0, diff));
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} else if y >= 27 {
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snake[0].translate((0, (y * 37)));
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}
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}
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}
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}
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// So that the snake doesn't move at super speed
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std::thread::sleep(Duration::from_millis(125));
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time = Instant::now();
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}
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apple.draw(ctx).unwrap();
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snake.draw(ctx).unwrap();
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})
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