screeps_pathfinding/utils/
pathing.rs

1use screeps::{Direction, Position};
2
3/// Utility function for converting a position and a path
4/// into a direction for the next movement on the path.
5///
6/// If the position is not on the path, it will return
7/// a direction that moves the creep towards the first
8/// position of the path.
9///
10/// Returns None if the current position is the final
11/// position in the path, or if the path is empty.
12pub fn get_next_step_direction_in_vec_pos(
13    current_pos: &Position,
14    path: &[Position],
15) -> Option<Direction> {
16    if path.is_empty() {
17        return None;
18    }
19
20    for i in 0..path.len() {
21        let path_pos = path[i];
22        if path_pos == *current_pos {
23            // Check if the current position is the last entry in the path
24            if i == (path.len() - 1) {
25                // info!(target: "next_step", "Current position is last entry in path");
26                return None; // No next step if we're at the last entry
27            } else {
28                let next_pos = path[i + 1];
29                let direction = current_pos.get_direction_to(next_pos);
30                // info!(target: "next_step", "Direction: {:?}", direction);
31                return direction;
32            }
33        }
34    }
35
36    // No next step if we're not on the path at all, move towards the path start
37    // info!(target: "next_step", "Current position is not in path");
38    if let Some(path_pos) = path.first() {
39        current_pos.get_direction_to(*path_pos)
40    } else {
41        // Final fallback, should be captured by the initial length check, but
42        // the compiler isn't smart enough to know that.
43        None
44    }
45}
46
47// #[derive(Debug)]
48// pub struct PathMovementCache {
49//     current_position: Position,
50//     path_index: usize,
51//     path: &[Position],
52// }
53
54// impl PathMovementCache {
55//     pub fn new(current_position: Position, path_index: usize, path: &[Position]) -> Self {
56//         Self {
57//             current_position,
58//             path_index,
59//             path,
60//         }
61//     }
62
63//     pub fn did_creep_move(&self) -> bool {
64
65//     }
66
67// }
screeps_pathfinding/utils/pathing.rs

screeps_pathfinding/utils/
pathing.rs
