feat!: "Syntax sugar" for pixels per meter measure

- Added meters function for better readability
- Adjusted tilemap_bundle transform
- Added 2nd floor in setup_world system

BREAKING CHANGE: Removed HALVED_PIXELS_PER_METER const

src/layout/container.rs

@@ -2,7 +2,9 @@ use bevy::prelude::*;
 use bevy_rapier2d::prelude::*;
 
 use crate::{
-    GameState, HALVED_PIXELS_PER_METER, PIXELS_PER_METER, inventory::{
+    GameState,
+    meters,
+    inventory::{
         ActiveInventory,
         Inventory,
         item::Item,
@@ -45,16 +47,16 @@ pub fn container_bundle(
     let image = asset_server.load(CRATE_CLOSED_ASSET);
     (
         Container,
-        Transform::from_xyz(position.x, position.y - HALVED_PIXELS_PER_METER, 0.),
+        Transform::from_xyz(position.x, position.y - meters(0.5), 0.),
         Sprite::from_image(image),
         Inventory::new(inventory_size),
         Observer::new(on_container_interact),
         Children::spawn((
             SpawnIter(items.into_iter()),
             Spawn((
-                Collider::cuboid(PIXELS_PER_METER, PIXELS_PER_METER),
+                Collider::cuboid(meters(1.), meters(1.)),
                 Sensor,
-                Transform::from_xyz(0., HALVED_PIXELS_PER_METER, 0.),
+                Transform::from_xyz(0., meters(0.5), 0.),
             )),
         )),
     )

src/layout/door.rs

@@ -1,7 +1,7 @@
 use bevy::prelude::*;
 use bevy_rapier2d::prelude::*;
 
-use crate::{PIXELS_PER_METER, HALVED_PIXELS_PER_METER};
+use crate::meters;
 
 use super::*;
 
@@ -43,7 +43,7 @@ fn on_door_interact(
     for child in children {
         if let Ok((mut sprite, mut transform)) = sprite_query.get_mut(*child) {
             let (image, translation) = if was_opened { (DOOR_CLOSED_ASSET, 0.) }
-                else { (DOOR_OPENED_ASSET, door.0 as f32 * HALVED_PIXELS_PER_METER) };
+                else { (DOOR_OPENED_ASSET, door.0 as f32 * meters(0.5)) };
             sprite.image = asset_server.load(image);
             transform.translation.x = translation;
             break;
@@ -58,7 +58,7 @@ fn on_door_interact(
 }
 
 fn door_collider() -> Collider {
-    Collider::cuboid(PIXELS_PER_METER * 0.06125, PIXELS_PER_METER)
+    Collider::cuboid(meters(0.06125), meters(1.))
 }
 
 pub fn door_bundle(asset_server: &Res<AssetServer>, position: Vec2, facing_left: bool) -> impl Bundle {
@@ -72,7 +72,7 @@ pub fn door_bundle(asset_server: &Res<AssetServer>, position: Vec2, facing_left:
         Observer::new(on_door_interact),
         children![
             (
-                Collider::cuboid(HALVED_PIXELS_PER_METER, PIXELS_PER_METER),
+                Collider::cuboid(meters(0.5), meters(1.)),
                 Sensor,
                 Transform::from_xyz(0., 0., 0.),
             ),

src/layout/systems.rs

@@ -5,7 +5,9 @@ use bevy::{
 use bevy_rapier2d::prelude::*;
 
 use crate::{
-    HALVED_PIXELS_PER_METER, PIXELS_PER_METER, inventory::item::Item, player::Player
+    meters,
+    inventory::item::Item,
+    player::Player,
 };
 
 use super::*;
@@ -73,20 +75,27 @@ pub fn setup_world(
         Item::new_positioned(uvec2(4, 4), uvec2(0, 4)),
     ];
 
-    // floor
+    // floor 1F
     let mut tiles = (0..16).map(|x| {
         (0, uvec2(x, 1))
     }).collect::<Vec<(u16, UVec2)>>();
 
-    // ceiling
+    // floor/ceil 1-2F
     tiles.extend((0..16).map(|x| {
         (0, uvec2(x, 5))
     }));
 
+    // ceil 2F
+    tiles.extend((0..16).map(|x| {
+        (0, uvec2(x, 9))
+    }));
+    
     // walls
     tiles.extend([
         (0, 4), (0, 3), (0, 2),
+        (0, 8), (0, 7), (0, 6),
         (15, 4), (15, 3), (15, 2),
+        (15, 8), (15, 7), (15, 6),
     ].iter().map(|(x, y)| {
         (1, uvec2(*x, *y))
     }));
@@ -99,15 +108,21 @@ pub fn setup_world(
     }));
 
     let colliders: Vec<(Collider, Vec2)> = vec![
-        (Collider::cuboid(HALVED_PIXELS_PER_METER, PIXELS_PER_METER * 1.5),
-        vec2(HALVED_PIXELS_PER_METER, HALVED_PIXELS_PER_METER)),
-        (Collider::cuboid(HALVED_PIXELS_PER_METER, PIXELS_PER_METER * 1.5),
-        vec2(PIXELS_PER_METER * 15.5, HALVED_PIXELS_PER_METER)),
+        // 1F
+        (Collider::cuboid(meters(0.5), meters(1.5)),
+        vec2(meters(0.5), meters(-4.5))),
+        (Collider::cuboid(meters(0.5), meters(1.5)),
+        vec2(meters(15.5), meters(-4.5))),
+        // 2F
+        (Collider::cuboid(meters(0.5), meters(1.5)),
+        vec2(meters(0.5), meters(0.5))),
+        (Collider::cuboid(meters(0.5), meters(1.5)),
+        vec2(meters(15.5), meters(-0.5))),
     ];
     
-    commands.spawn(door::door_bundle(&asset_server, vec2(PIXELS_PER_METER * 1.5, 0.), true));
-    commands.spawn(door::door_bundle(&asset_server, vec2(PIXELS_PER_METER * 3.5, 0.), false));
-    commands.spawn(door::door_bundle(&asset_server, vec2(PIXELS_PER_METER * 5.5, 0.), false)).insert(Locked);
-    commands.spawn(container::container_bundle(&asset_server, vec2(-32., 0.), uvec2(8, 8), items));
-    commands.spawn(tilemap::tilemap_bundle(&asset_server, uvec2(16, 6), tiles, colliders));
+    commands.spawn(door::door_bundle(&asset_server, vec2(meters(1.5), 0.), true));
+    commands.spawn(door::door_bundle(&asset_server, vec2(meters(3.5), 0.), false));
+    commands.spawn(door::door_bundle(&asset_server, vec2(meters(5.5), 0.), false)).insert(Locked);
+    commands.spawn(container::container_bundle(&asset_server, vec2(meters(-2.), 0.), uvec2(8, 8), items));
+    commands.spawn(tilemap::tilemap_bundle(&asset_server, uvec2(16, 16), tiles, colliders));
 }

src/layout/tilemap.rs

@@ -12,10 +12,10 @@ use bevy::{
 };
 use bevy_rapier2d::prelude::*;
 
-use crate::{HALVED_PIXELS_PER_METER, PIXELS_PER_METER};
+use crate::meters;
 
 const TILEMAP_PATH: &'static str = "sprites/level/tilemap.png";
-const TILE_DISPLAY_SIZE: UVec2 = UVec2::splat(PIXELS_PER_METER as u32);
+const TILE_DISPLAY_SIZE: UVec2 = UVec2::splat(meters(1.) as u32);
 
 #[derive(Component, Debug, PartialEq, Eq, Default, Clone, Copy, Reflect)]
 #[reflect(Component, Debug, PartialEq, Default, Clone)]
@@ -45,12 +45,13 @@ pub fn tilemap_bundle(
             ),
             ..default()
         },
+        Transform::from_xyz(0., meters(0.5) * size.y as f32 - meters(3.), 0.),
         TilemapChunkTileData(tile_data),
         Children::spawn(SpawnIter(colliders.into_iter()
             .map(move |(collider, pos)| {(
                 collider.clone(),
                 Transform::from_xyz(
-                    pos.x - HALVED_PIXELS_PER_METER * size.x as f32,
+                    pos.x - meters(0.5) * size.x as f32,
                     pos.y,
                     0.
                 ),

src/lib.rs

@@ -16,7 +16,6 @@ mod tests;
 pub mod ui;
 
 pub const PIXELS_PER_METER: f32 = 16.0;
-pub const HALVED_PIXELS_PER_METER: f32 = PIXELS_PER_METER * 0.5;
 
 pub struct ExpeditionPlugin;
 
@@ -52,6 +51,11 @@ fn insert_entity_name(names: Query<(Entity, &mut Name), Added<Name>>) {
     }
 }
 
+#[inline(always)]
+pub const fn meters(value: f32) -> f32 {
+    PIXELS_PER_METER * value
+}
+
 fn setup_global(mut commands: Commands) {
     commands.spawn(camera_bundle());
     commands.spawn(ui::UiRoot::new());

src/player/mod.rs

@@ -2,7 +2,9 @@ use bevy::prelude::*;
 use bevy_rapier2d::prelude::*;
 
 use crate::{
-    HALVED_PIXELS_PER_METER, PIXELS_PER_METER, input::InputAction as Action, inventory::Inventory
+    meters,
+    input::InputAction as Action,
+    inventory::Inventory,
 };
 
 pub mod systems;
@@ -16,7 +18,7 @@ pub struct Player {
 
 impl Default for Player {
     fn default() -> Self {
-        Self { speed: PIXELS_PER_METER * 0.8 }
+        Self { speed: meters(0.8) }
     }
 }
 
@@ -31,7 +33,7 @@ pub fn player_bundle(asset_server: &Res<AssetServer>) -> impl Bundle {
         RigidBody::KinematicPositionBased,
         KinematicCharacterController::default(),
         ActiveCollisionTypes::default() | ActiveCollisionTypes::KINEMATIC_STATIC,
-        Collider::cuboid(HALVED_PIXELS_PER_METER, PIXELS_PER_METER),
+        Collider::cuboid(meters(0.5), meters(1.)),
         ActiveEvents::COLLISION_EVENTS,
         Sleeping::disabled(),
         children![