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day 10 part 2

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Daniel Bulant 2023-12-10 13:01:46 +01:00
parent 4e870999fb
commit 13429a150d
1 changed files with 24 additions and 21 deletions
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45
2023/10/src/main.rs
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@ -320,7 +320,7 @@ impl Map {
}
fn parse_map() -> Map {
let file = BufReader::new(File::open("./input1b").unwrap());
let file = BufReader::new(File::open("./input2").unwrap());
let mut map = Map { map: vec![], pos: Pos::new(0, 0), dist_map: vec![], main_loop: vec![] };
for (y, line) in file.lines().enumerate() {
@ -381,29 +381,32 @@ fn main() {
let mut is_enabled = false;
let mut in_dir = None;
for (x, col) in row.iter().enumerate() {
if *col == MainLoop::Loop && x != 0 && in_dir.is_some() {
if map.main_loop[y][x-1] == MainLoop::Loop {
if map.map[y][x] == Pipes::Horizontal {
continue;
}
let out_dir = map.map[y][x].get_directions().get(0).cloned();
if out_dir.unwrap() != in_dir.unwrap() {
if *col == MainLoop::Loop {
let pipe = map.get(Pos::new(x, y));
match pipe {
Pipes::Horizontal => {},
Pipes::Vertical => {
is_enabled = !is_enabled;
}
in_dir = None;
},
Pipes::NE => {
in_dir = Some(Directions::North);
},
Pipes::NW => {
if in_dir != Some(Directions::North) {
is_enabled = !is_enabled;
}
},
Pipes::SE => {
in_dir = Some(Directions::South);
},
Pipes::SW => {
if in_dir != Some(Directions::South) {
is_enabled = !is_enabled;
}
},
_ => {}
}
}
if is_enabled && *col == MainLoop::Loop {
is_enabled = false;
continue;
}
if !is_enabled && *col == MainLoop::Loop {
if map.map[y][x] != Pipes::Vertical {
in_dir = map.map[y][x].get_directions().get(0).cloned();
}
is_enabled = true;
continue;
}
if is_enabled && *col == MainLoop::None {
marked_positions.push(Pos::new(x, y));
}