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Added hueristic to speed up the pathfinding

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Dreaded_X 2022-12-25 00:09:40 +01:00
parent 03226f98e1
commit 092aba848a
1 changed files with 10 additions and 0 deletions
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10
2022/src/bin/day24.rs
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@ -101,6 +101,16 @@ impl Map {
]; ];
while queue.len() > 0 { while queue.len() > 0 {
// Pretty sure this is basically A*?
// Not 100% sure if it actually works correctly, but it works correctly for my input ¯\_(ツ)_/¯
queue.make_contiguous().sort_by(|a, b| {
let distance_a = (a.position.x - end.x).abs() + (a.position.y - end.y).abs() + a.time_passed as isize;
let distance_b = (b.position.x - end.x).abs() + (b.position.y - end.y).abs() + b.time_passed as isize;
distance_a.cmp(&distance_b)
});
// Instead we should pick the entry that is the closest to our target first
let current = queue.pop_front().unwrap(); let current = queue.pop_front().unwrap();
// Check every neighbour // Check every neighbour