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nora 2024-01-09 22:09:53 +01:00
parent 17fb3a7a69
commit fd2ea0612b
1 changed files with 14 additions and 8 deletions
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22
2023/day24/src/lib.rs
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@ -29,6 +29,7 @@ impl Day for Day24 {
struct Vector { struct Vector {
x: i64, x: i64,
y: i64, y: i64,
#[allow(dead_code)]
z: i64, z: i64,
} }
@ -77,12 +78,10 @@ fn part1(input: &str) -> u64 {
let (pos, vel) = parse(line); let (pos, vel) = parse(line);
let x1 = pos.x; let x1 = pos.x;
let x2 = pos.x + vel.x;
let y1 = pos.y; let y1 = pos.y;
let y2 = pos.y + vel.y;
let delta_x = (x2 - x1).abs() as f64; let delta_x = vel.x as f64;
let delta_y = (y2 - y1).abs() as f64; let delta_y = vel.y as f64;
// f(x) = ax + b // f(x) = ax + b
@ -98,13 +97,20 @@ fn part1(input: &str) -> u64 {
let mut total = 0; let mut total = 0;
let range = if paths.len() > 100 {
200000000000000.0..400000000000000.0
} else {
7.0..27.0
};
// TODO: i dont think floats are gonna work.... // TODO: i dont think floats are gonna work....
for (i, stone) in paths.iter().enumerate() { for (i, stone) in paths.iter().enumerate() {
let candidates = &paths[i..]; let candidates = &paths[(i + 1)..];
for candidate in candidates { for (j, candidate) in candidates.iter().enumerate() {
if let Some((x, y)) = dbg!(intersect(stone.0, stone.1, candidate.0, candidate.1)) { if let Some((x, y)) = intersect(stone.0, stone.1, candidate.0, candidate.1) {
let range = 200000000000000.0..400000000000000.0; // TODO: check for past, only the future matters
if range.contains(&x) && range.contains(&y) { if range.contains(&x) && range.contains(&y) {
dbg!((i, j, x, y));
total += 1; total += 1;
} }
} }