Move Client struct to azalea crate (#297)

* move the Client struct out of azalea-client into azalea

* actually add client impls in azalea

1 files changed, 45 insertions, 0 deletions

diff --git a/azalea/src/client_impl/inventory.rs b/azalea/src/client_impl/inventory.rs
new file mode 100644
index 00000000..0ea11477
--- /dev/null
+++ b/azalea/src/client_impl/inventory.rs
@@ -0,0 +1,45 @@
+use azalea_client::inventory::SetSelectedHotbarSlotEvent;
+use azalea_entity::inventory::Inventory;
+use azalea_inventory::Menu;
+
+use crate::Client;
+
+impl Client {
+    /// Return the menu that is currently open, or the player's inventory if no
+    /// menu is open.
+    pub fn menu(&self) -> Menu {
+        self.query_self::<&Inventory, _>(|inv| inv.menu().clone())
+    }
+
+    /// Returns the index of the hotbar slot that's currently selected.
+    ///
+    /// If you want to access the actual held item, you can get the current menu
+    /// with [`Client::menu`] and then get the slot index by offsetting from
+    /// the start of [`azalea_inventory::Menu::hotbar_slots_range`].
+    ///
+    /// You can use [`Self::set_selected_hotbar_slot`] to change it.
+    pub fn selected_hotbar_slot(&self) -> u8 {
+        self.query_self::<&Inventory, _>(|inv| inv.selected_hotbar_slot)
+    }
+
+    /// Update the selected hotbar slot index.
+    ///
+    /// This will run next `Update`, so you might want to call
+    /// `bot.wait_updates(1)` after calling this if you're using `azalea`.
+    ///
+    /// # Panics
+    ///
+    /// This will panic if `new_hotbar_slot_index` is not in the range 0..=8.
+    pub fn set_selected_hotbar_slot(&self, new_hotbar_slot_index: u8) {
+        assert!(
+            new_hotbar_slot_index < 9,
+            "Hotbar slot index must be in the range 0..=8"
+        );
+
+        let mut ecs = self.ecs.lock();
+        ecs.trigger(SetSelectedHotbarSlotEvent {
+            entity: self.entity,
+            slot: new_hotbar_slot_index,
+        });
+    }
+}