fix `BlockCollisions` bounding box (#68)

* fix `BlockCollisions` bounding box

* add test

---------

Co-authored-by: Ubuntu <github@matdoes.dev>

1 files changed, 6 insertions, 6 deletions

diff --git a/azalea-physics/src/collision/world_collisions.rs b/azalea-physics/src/collision/world_collisions.rs
index 631bc116..9ffc62a5 100644
--- a/azalea-physics/src/collision/world_collisions.rs
+++ b/azalea-physics/src/collision/world_collisions.rs
@@ -20,13 +20,13 @@ pub struct BlockCollisions<'a> {
 
 impl<'a> BlockCollisions<'a> {
     pub fn new(world: &'a World, aabb: AABB) -> Self {
-        let origin_x = (aabb.min_x - EPSILON) as i32 - 1;
-        let origin_y = (aabb.min_y - EPSILON) as i32 - 1;
-        let origin_z = (aabb.min_z - EPSILON) as i32 - 1;
+        let origin_x = (aabb.min_x - EPSILON).floor() as i32 - 1;
+        let origin_y = (aabb.min_y - EPSILON).floor() as i32 - 1;
+        let origin_z = (aabb.min_z - EPSILON).floor() as i32 - 1;
 
-        let end_x = (aabb.max_x + EPSILON) as i32 + 1;
-        let end_y = (aabb.max_y + EPSILON) as i32 + 1;
-        let end_z = (aabb.max_z + EPSILON) as i32 + 1;
+        let end_x = (aabb.max_x + EPSILON).floor() as i32 + 1;
+        let end_y = (aabb.max_y + EPSILON).floor() as i32 + 1;
+        let end_z = (aabb.max_z + EPSILON).floor() as i32 + 1;
 
         let cursor = Cursor3d::new(origin_x, origin_y, origin_z, end_x, end_y, end_z);