feat!: Item processing

- Added try_insert_item system
- Added rotated field on Item
- Implemented UI item drawing with scale and rotation

BREAKING CHANGE: Item.swap_size renamed to Item.rotate
    Item.clone_swapped renamed to Item.clone_rotated

src/player.rs

@@ -1,7 +1,7 @@
 use bevy::prelude::*;
 use leafwing_input_manager::prelude::*;
 
-use crate::{GameState, InputAction as Action, inventory::{ActiveInventory, Inventory}};
+use crate::{GameState, InputAction as Action, inventory::{ActiveInventory, Inventory, item::Item}};
 
 #[derive(Component)]
 pub struct Player {
@@ -18,7 +18,7 @@ fn player_bundle(asset_server: &Res<AssetServer>) -> impl Bundle {
         Sprite::from_image(image),
         Transform::from_xyz(0f32, 0f32, 1f32),
         Action::default_input_map(),
-        Inventory::new(UVec2::new(12, 8)),
+        Inventory::new(UVec2::new(4, 4)),
         ActiveInventory,
     )
 }
@@ -27,7 +27,37 @@ pub fn setup_player(mut commands: Commands, asset_server: Res<AssetServer>) {
     commands.spawn(player_bundle(&asset_server));
 }
 
+pub fn try_insert_item(
+    mut commands: Commands,
+    item_query: Query<&Item>,
+    inventory_query: Query<(Entity, &Inventory, Option<&Children>)>,
+) {
+    let mut item = Item::new(UVec2::new(1, 1));
+    for (entity, inventory, children) in inventory_query {
+        let children = match children {
+            Some(children) => &children[..],
+            None => &[],
+        };
+        match inventory.find_free_space(item_query, children, item.size) {
+            Some((position, should_rotate)) => {
+                if should_rotate {
+                    item.rotate();
+                }
+                item.position = Some(position);
+                info!("Spawning item {item:?}");
+                commands.entity(entity).with_child(item);
+            },
+            None => {
+                warn!("Inventory does not have space for {}", item.size);
+            },
+        }
+        // only first inventory
+        break;
+    }
+}
+
 pub fn handle_input(
+    mut commands: Commands,
     time: Res<Time>,
     state: Res<State<GameState>>,
     mut next_state: ResMut<NextState<GameState>>,
@@ -49,6 +79,10 @@ pub fn handle_input(
             if direction != 0f32 {
                 sprite.flip_x = direction < 0f32;
             }
+
+            if action_state.just_pressed(&Action::Interact) {
+                commands.run_system_cached(try_insert_item);
+            }
         },
         GameState::Inventory => {
             let (_, mut action_state, _, _) = player;