Noratrieb/game-wip-dontplay
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Eliminate negative coordinates

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They were making coordinate calculations more difficult,
and probably slower due to having to special case negative coordinates
This commit is contained in:
crumblingstatue 2023-04-03 10:32:20 +02:00
parent 67b2098ffb
commit 2a2c8f721c
3 changed files with 9 additions and 53 deletions
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11
src/math.rs
View file

@ -1,6 +1,6 @@
use crate::world::{TilePos, TilePosScalar};
pub type WorldPosScalar = i32;
pub type WorldPosScalar = u32;
#[derive(Clone, Copy)]
pub struct WorldPos {
@ -20,11 +20,7 @@ impl WorldPos {
}
pub fn wp_to_tp(wp: WorldPosScalar) -> TilePosScalar {
if wp.is_negative() {
(wp + 1) / TILE_SIZE as TilePosScalar - 1
} else {
wp / TILE_SIZE as TilePosScalar
}
wp / TILE_SIZE as TilePosScalar
}
#[test]
@ -32,7 +28,4 @@ fn test_wp_to_tp() {
assert_eq!(wp_to_tp(0), 0);
assert_eq!(wp_to_tp(1), 0);
assert_eq!(wp_to_tp(33), 1);
assert_eq!(wp_to_tp(-1), -1);
assert_eq!(wp_to_tp(-32), -1);
assert_eq!(wp_to_tp(-33), -2);
}