feat: Barely working tilemap system

- Added tilemap bundle
- Added HALVED_METERS_PER_PIXEL constant

src/layout/container.rs

@@ -2,13 +2,11 @@ use bevy::prelude::*;
 use bevy_rapier2d::prelude::*;
 
 use crate::{
-    GameState,
-    PIXELS_PER_METER,
-    inventory::{
+    GameState, HALVED_PIXELS_PER_METER, PIXELS_PER_METER, inventory::{
         ActiveInventory,
         Inventory,
         item::Item,
-    },
+    }
 };
 
 use super::*;
@@ -47,7 +45,7 @@ pub fn container_bundle(
     let image = asset_server.load(CRATE_CLOSED_ASSET);
     (
         Container,
-        Transform::from_xyz(position.x, position.y - PIXELS_PER_METER * 0.5, 0.),
+        Transform::from_xyz(position.x, position.y - HALVED_PIXELS_PER_METER, 0.),
         Sprite::from_image(image),
         Inventory::new(inventory_size),
         Observer::new(on_container_interact),
@@ -56,7 +54,7 @@ pub fn container_bundle(
             Spawn((
                 Collider::cuboid(PIXELS_PER_METER, PIXELS_PER_METER),
                 Sensor,
-                Transform::from_xyz(0., PIXELS_PER_METER * 0.5, 0.),
+                Transform::from_xyz(0., HALVED_PIXELS_PER_METER, 0.),
             )),
         )),
     )

src/layout/door.rs

@@ -1,7 +1,7 @@
 use bevy::prelude::*;
 use bevy_rapier2d::prelude::*;
 
-use crate::PIXELS_PER_METER;
+use crate::{PIXELS_PER_METER, HALVED_PIXELS_PER_METER};
 
 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 * PIXELS_PER_METER * 0.5) };
+                else { (DOOR_OPENED_ASSET, door.0 as f32 * HALVED_PIXELS_PER_METER) };
             sprite.image = asset_server.load(image);
             transform.translation.x = translation;
             break;
@@ -72,7 +72,7 @@ pub fn door_bundle(asset_server: &Res<AssetServer>, position: Vec2, facing_left:
         Observer::new(on_door_interact),
         children![
             (
-                Collider::cuboid(PIXELS_PER_METER * 0.5, PIXELS_PER_METER),
+                Collider::cuboid(HALVED_PIXELS_PER_METER, PIXELS_PER_METER),
                 Sensor,
                 Transform::from_xyz(0., 0., 0.),
             ),

src/layout/mod.rs

@@ -3,6 +3,7 @@ use bevy::prelude::*;
 pub mod container;
 pub mod door;
 pub mod systems;
+pub mod tilemap;
 
 #[derive(Component, Debug, PartialEq, Eq, Default, Clone, Copy, Reflect)]
 #[reflect(Component, Debug, PartialEq, Default, Clone)]

src/layout/systems.rs

@@ -5,8 +5,7 @@ use bevy::{
 use bevy_rapier2d::prelude::*;
 
 use crate::{
-    inventory::item::Item,
-    player::Player,
+    HALVED_PIXELS_PER_METER, PIXELS_PER_METER, inventory::item::Item, player::Player
 };
 
 use super::*;
@@ -73,8 +72,42 @@ pub fn setup_world(
         Item::new_positioned(uvec2(2, 3), uvec2(6, 2)),
         Item::new_positioned(uvec2(4, 4), uvec2(0, 4)),
     ];
-    commands.spawn(door::door_bundle(&asset_server, vec2(16., 0.), true));
-    commands.spawn(door::door_bundle(&asset_server, vec2(48., 0.), false));
-    commands.spawn(door::door_bundle(&asset_server, vec2(80., 0.), false)).insert(Locked);
+
+    // floor
+    let mut tiles = (0..16).map(|x| {
+        (0, uvec2(x, 1))
+    }).collect::<Vec<(u16, UVec2)>>();
+
+    // ceiling
+    tiles.extend((0..16).map(|x| {
+        (0, uvec2(x, 5))
+    }));
+    
+    // walls
+    tiles.extend([
+        (0, 4), (0, 3), (0, 2),
+        (15, 4), (15, 3), (15, 2),
+    ].iter().map(|(x, y)| {
+        (1, uvec2(*x, *y))
+    }));
+    
+    // wall connectors
+    tiles.extend([
+        (13, 4), (11, 4), (9, 4),
+    ].iter().map(|(x, y)| {
+        (2, uvec2(*x, *y))
+    }));
+
+    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)),
+    ];
+    
+    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));
 }

src/layout/tilemap.rs

@@ -0,0 +1,60 @@
+use bevy::{
+    image::{
+        ImageArrayLayout,
+        ImageLoaderSettings,
+    },
+    prelude::*,
+    sprite_render::{
+        TileData,
+        TilemapChunk,
+        TilemapChunkTileData,
+    },
+};
+use bevy_rapier2d::prelude::*;
+
+use crate::{HALVED_PIXELS_PER_METER, PIXELS_PER_METER};
+
+const TILEMAP_PATH: &'static str = "sprites/level/tilemap.png";
+const TILE_DISPLAY_SIZE: UVec2 = UVec2::splat(PIXELS_PER_METER as u32);
+
+#[derive(Component, Debug, PartialEq, Eq, Default, Clone, Copy, Reflect)]
+#[reflect(Component, Debug, PartialEq, Default, Clone)]
+pub struct Tilemap;
+
+pub fn tilemap_bundle(
+    asset_server: &Res<AssetServer>,
+    size: UVec2,
+    tiles: Vec<(u16, UVec2)>,
+    colliders: Vec<(Collider, Vec2)>,
+) -> impl Bundle {
+    let tile_data: Vec<Option<TileData>> = (0..size.element_product()).map(|xy| {
+        if let Some((id, _)) = tiles.iter().find(|(_, pos)| pos.x == xy % size.x && pos.y == xy / size.x) {
+            Some(TileData::from_tileset_index(*id))
+        } else { None }
+    }).collect();
+    (
+        Tilemap,
+        TilemapChunk {
+            chunk_size: size,
+            tile_display_size: TILE_DISPLAY_SIZE,
+            tileset: asset_server.load_with_settings(
+                TILEMAP_PATH,
+                |settings: &mut ImageLoaderSettings| {
+                    settings.array_layout = Some(ImageArrayLayout::RowCount { rows: 3 })
+                },
+            ),
+            ..default()
+        },
+        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.y,
+                    0.
+                ),
+            )})
+        )),
+    )
+}

src/lib.rs

@@ -16,6 +16,7 @@ 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;
 

src/player/mod.rs

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