feat(ecs): replace Relationship component with pair UID support

1 files changed, 10 insertions, 6 deletions

diff --git a/ecs/examples/relationship.rs b/ecs/examples/relationship.rs
index 240884a..b607398 100644
--- a/ecs/examples/relationship.rs
+++ b/ecs/examples/relationship.rs
@@ -1,5 +1,6 @@
+use ecs::pair::Pair;
 use ecs::phase::START as START_PHASE;
-use ecs::relationship::Relationship;
+use ecs::uid::Wildcard;
 use ecs::{Component, Query, World};
 
 #[derive(Component)]
@@ -17,16 +18,19 @@ struct Health
     health: u32,
 }
 
+#[derive(Component)]
 struct Holding;
 
-fn print_player_stats(
-    player_query: Query<(&Player, &Health, &Relationship<Holding, Sword>)>,
-)
+fn print_player_stats(player_query: Query<(&Player, &Health, Pair<Holding, Wildcard>)>)
 {
     for (_, health, sword_relationship) in &player_query {
         println!("Player health: {}", health.health);
 
-        if let Some(sword) = sword_relationship.get(0) {
+        if let Some(sword_ent) = sword_relationship.get_target_entity() {
+            let sword = sword_ent
+                .get::<Sword>()
+                .expect("Sword entity is missing sword component");
+
             println!("Player sword attack strength: {}", sword.attack_strength);
         }
     }
@@ -43,7 +47,7 @@ fn main()
     world.create_entity((
         Player,
         Health { health: 180 },
-        Relationship::<Holding, Sword>::new(sword_uid),
+        Pair::new::<Holding>(sword_uid),
     ));
 
     world.step();