Show inventory in hud

src/systems/hud.rs

@@ -3,12 +3,17 @@ use crate::prelude::*;
 #[system]
 #[read_component(Health)]
 #[read_component(Player)]
+#[read_component(Item)]
+#[read_component(Carried)]
+#[read_component(Name)]
 pub fn hud(ecs: &SubWorld) {
     let mut health_query = <&Health>::query().filter(component::<Player>());
     let player_health = health_query.iter(ecs).next().unwrap();
     let mut draw_batch = DrawBatch::new();
+
     draw_batch.target(2);
     draw_batch.print_centered(1, "Explore the Dungeon. Cursor keys or ASWD to move.");
+
     draw_batch.bar_horizontal(
         Point::zero(),
         SCREEN_WIDTH * 2,
@@ -24,5 +29,27 @@ pub fn hud(ecs: &SubWorld) {
         ),
         ColorPair::new(WHITE, RED),
     );
+
+    let player = <(Entity, &Player)>::query()
+        .iter(ecs)
+        .find_map(|(entity, _player)| Some(*entity))
+        .unwrap();
+    let mut item_query = <(&Item, &Name, &Carried)>::query();
+    let mut y = 3;
+    item_query
+        .iter(ecs)
+        .filter(|(_, _, carried)| carried.0 == player)
+        .for_each(|(_, name, _)| {
+            draw_batch.print(Point::new(3, y), format!("{} : {}", y - 2, &name.0));
+            y += 1;
+        });
+    if y > 3 {
+        draw_batch.print_color(
+            Point::new(3, 2),
+            "Items carried",
+            ColorPair::new(YELLOW, BLACK),
+        );
+    }
+
     draw_batch.submit(10000).expect("Batch error");
 }