ui: Unfinished item rotating

src/inventory/ui.rs

@@ -2,7 +2,7 @@ use std::f32::consts::FRAC_PI_2;
 
 use bevy::prelude::*;
 
-use crate::{inventory::{ActiveInventory, Inventory, item::Item}, ui::{UiRoot, WindowSize}};
+use crate::{inventory::{ActiveInventory, Inventory, item::Item}, ui::{UiRoot, UiRotateEvent, WindowSize}};
 
 const UI_SLOT_ASSET_PATH: &'static str = "sprites/ui/inventory_slot.png";
 const TEMP_ITEM_PATH: &'static str = "sprites/items/choco_bar.png";
@@ -19,6 +19,9 @@ pub struct UiInventorySlot(UVec2);
 #[require(Node, ImageNode)]
 pub struct UiItem(Entity);
 
+#[derive(Component)]
+pub struct HoveredItem(Entity);
+
 fn on_slot_over(e: On<Pointer<Over>>, mut query: Query<&mut ImageNode, With<UiInventorySlot>>) {
     if let Ok(mut image) = query.get_mut(e.event_target()) {
         image.color = Color::WHITE.darker(0.3);
@@ -31,6 +34,18 @@ fn on_slot_out(e: On<Pointer<Out>>, mut query: Query<&mut ImageNode, With<UiInve
     }
 }
 
+fn on_item_over(e: On<Pointer<Over>>, mut commands: Commands, query: Query<Entity, With<UiItem>>) {
+    if let Ok(_) = query.get(e.event_target()) {
+        commands.entity(e.event_target()).insert(HoveredItem(e.event_target()));
+    }
+}
+
+fn on_item_out(e: On<Pointer<Out>>, mut commands: Commands, query: Query<Entity, With<UiItem>>) {
+    if let Ok(_) = query.get(e.event_target()) {
+        commands.entity(e.event_target()).remove::<HoveredItem>();
+    }
+}
+
 fn on_item_drag(e: On<Pointer<Drag>>, mut query: Query<&mut UiTransform, With<UiItem>>) {
     if let Ok(mut transform) = query.get_mut(e.event_target()) {
         transform.translation = Val2::px(e.distance.x, e.distance.y);
@@ -80,6 +95,30 @@ fn on_item_drag_drop(
     }
 }
 
+fn on_ui_rotate(
+    event: On<UiRotateEvent>,
+    item_query: Query<&Item>,
+    mut mut_item_query: Query<(&ChildOf, &mut Item)>,
+    inventory_query: Query<(&Inventory, Option<&Children>)>,
+    ui_item_query: Query<(&mut UiItem, &mut Node), With<HoveredItem>>,
+) {
+    for (mut ui_item, mut node) in ui_item_query {
+        let Ok((item_parent, mut mut_item)) = mut_item_query.get_mut(ui_item.0) else {
+            continue;
+        };
+        let Ok((inventory, children)) = inventory_query.get(item_parent.0) else {
+            continue;
+        };
+
+        let children = match children {
+            Some(children) => &children[..],
+            None => &[],
+        };
+
+        // TODO
+    }
+}
+
 fn ui_inventory_bundle(
     inventory: &Inventory,
     inventory_entity: Entity,
@@ -223,6 +262,8 @@ pub fn setup_ui_inventory(
                         .find(|(i, _)| i.position.unwrap_or_default() == UVec2::new(x, y)) {
                         slot_commands.with_children(|commands| {
                             commands.spawn(ui_item_bundle(item, *entity, temp_item_image.clone()))
+                                .observe(on_item_over)
+                                .observe(on_item_out)
                                 .observe(on_item_drag)
                                 .observe(on_item_drag_end);
                         });

src/lib.rs

@@ -20,6 +20,11 @@ pub enum InputAction {
     Interact,
 }
 
+#[derive(Actionlike, PartialEq, Eq, Hash, Debug, Clone, Reflect, Serialize, Deserialize)]
+pub enum UiAction {
+    Rotate,
+}
+
 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, Default, States)]
 pub enum GameState {
     #[default]
@@ -29,14 +34,21 @@ pub enum GameState {
 
 impl InputAction {
     pub fn default_input_map() -> InputMap<Self> {
-        let input_map = InputMap::default()
+        InputMap::default()
             .with_axis(Self::Move, VirtualAxis::ad())
             .with_axis(Self::Move, GamepadAxis::LeftStickX)
             .with(Self::ToggleInventory, KeyCode::KeyI)
             .with(Self::ToggleInventory, GamepadButton::Select)
             .with(Self::Interact, KeyCode::KeyE)
-            .with(Self::Interact, GamepadButton::East);
-        input_map
+            .with(Self::Interact, GamepadButton::East)
+    }
+}
+
+impl UiAction {
+    pub fn default_input_map() -> InputMap<Self> {
+        InputMap::default()
+            .with(Self::Rotate, KeyCode::KeyR)
+            .with(Self::Rotate, GamepadButton::West)
     }
 }
 

src/ui.rs

@@ -1,4 +1,7 @@
 use bevy::{prelude::*, window::WindowResized};
+use leafwing_input_manager::prelude::*;
+
+use crate::UiAction;
 
 #[derive(Component, Reflect)]
 #[require(Node)]
@@ -25,6 +28,7 @@ impl UiRoot {
                 ..default()
             },
             Pickable::IGNORE,
+            UiAction::default_input_map(),
             Name::new("UiRoot"),
         )
     }
@@ -39,3 +43,19 @@ pub fn update_window_size(
         window_size.y = event.height;
     }
 }
+
+#[derive(Event)]
+pub struct UiRotateEvent;
+
+pub fn handle_input(
+    mut commands: Commands,
+    input: Query<&ActionState<UiAction>, With<UiRoot>>,
+) {
+    let Ok(action_state) = input.single() else {
+        error!("More than one UiRoot node");
+        return;
+    };
+    if action_state.just_released(&UiAction::Rotate) {
+        commands.trigger(UiRotateEvent);
+    }
+}