steel_worldgen/structure/
utils.rs

1use glam::IVec3;
2use steel_utils::random::Random;
3use steel_utils::random::legacy_random::LegacyRandom;
4use steel_utils::{BoundingBox, Direction};
5
6const VANILLA_HORIZONTAL_DIRECTIONS: [Direction; 4] = [
7    Direction::North,
8    Direction::East,
9    Direction::South,
10    Direction::West,
11];
12
13pub(crate) fn random_horizontal_direction(rng: &mut LegacyRandom) -> Direction {
14    VANILLA_HORIZONTAL_DIRECTIONS[rng.next_i32_bounded(4) as usize]
15}
16
17/// Vanilla's `StructurePiece.makeBoundingBox`: north/south keep width/depth,
18/// east/west swap them.
19pub(crate) const fn make_oriented_piece_bounding_box(
20    chunk_min_x: i32,
21    y: i32,
22    chunk_min_z: i32,
23    orientation: Direction,
24    width: i32,
25    height: i32,
26    depth: i32,
27) -> BoundingBox {
28    let z_axis = matches!(orientation, Direction::North | Direction::South);
29    let (box_width, box_depth) = if z_axis {
30        (width, depth)
31    } else {
32        (depth, width)
33    };
34    BoundingBox::new(
35        IVec3::new(chunk_min_x, y, chunk_min_z),
36        IVec3::new(
37            chunk_min_x + box_width - 1,
38            y + height - 1,
39            chunk_min_z + box_depth - 1,
40        ),
41    )
42}
steel_worldgen/structure/utils.rs

steel_worldgen/structure/
utils.rs
