From 3e18fb061538265610041d45c45642ee2686efd9 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Tue, 20 Feb 2024 21:55:33 +0100
Subject: feat(ecs): rename WorldExtra to ComponentStorage & make public

---
 ecs/src/lib.rs | 39 +++++++++++++++++++++------------------
 1 file changed, 21 insertions(+), 18 deletions(-)

(limited to 'ecs/src')

diff --git a/ecs/src/lib.rs b/ecs/src/lib.rs
index 5b8942b..f824ebc 100644
--- a/ecs/src/lib.rs
+++ b/ecs/src/lib.rs
@@ -22,13 +22,7 @@ pub struct World<Event>
 {
     systems: Vec<Box<dyn AnySystem>>,
     events: HashMap<Event, Vec<usize>>,
-    extra: WorldExtra,
-}
-
-#[derive(Debug)]
-struct WorldExtra
-{
-    entities: Vec<Entity>,
+    component_storage: ComponentStorage,
 }
 
 impl<Event> World<Event>
@@ -38,7 +32,7 @@ impl<Event> World<Event>
     {
         Self {
             systems: Vec::new(),
-            extra: WorldExtra { entities: Vec::new() },
+            component_storage: ComponentStorage { entities: Vec::new() },
             events: HashMap::new(),
         }
     }
@@ -47,7 +41,7 @@ impl<Event> World<Event>
     where
         Comps: ComponentSequence,
     {
-        self.extra
+        self.component_storage
             .entities
             .push(Entity { components: components.into_vec() });
     }
@@ -81,7 +75,7 @@ impl<Event> World<Event>
         for system_index in system_indices {
             let system = self.systems.get_mut(system_index).unwrap();
 
-            system.call(&mut self.extra);
+            system.call(&mut self.component_storage);
         }
     }
 
@@ -89,7 +83,7 @@ impl<Event> World<Event>
     where
         Comps: ComponentSequence,
     {
-        Query::new(&mut self.extra)
+        Query::new(&mut self.component_storage)
     }
 }
 
@@ -105,16 +99,16 @@ pub type System<Comps> = fn(Query<Comps>);
 
 trait AnySystem
 {
-    fn call(&self, world: &mut WorldExtra);
+    fn call(&self, component_storage: &mut ComponentStorage);
 }
 
 impl<Comps> AnySystem for System<Comps>
 where
     Comps: ComponentSequence,
 {
-    fn call(&self, world: &mut WorldExtra)
+    fn call(&self, component_storage: &mut ComponentStorage)
     {
-        self(Query::new(world));
+        self(Query::new(component_storage));
     }
 }
 
@@ -129,15 +123,18 @@ impl Debug for dyn AnySystem
 #[derive(Debug)]
 pub struct Query<'world, Comps>
 {
-    world: &'world mut WorldExtra,
+    component_storage: &'world mut ComponentStorage,
     comps_pd: PhantomData<Comps>,
 }
 
 impl<'world, Comps> Query<'world, Comps>
 {
-    fn new(world: &'world mut WorldExtra) -> Self
+    fn new(component_storage: &'world mut ComponentStorage) -> Self
     {
-        Self { world, comps_pd: PhantomData }
+        Self {
+            component_storage,
+            comps_pd: PhantomData,
+        }
     }
 }
 
@@ -148,7 +145,7 @@ where
     pub fn iter_mut(&mut self) -> QueryComponentIter<Comps>
     {
         QueryComponentIter {
-            entity_iter: self.world.entities.iter_mut(),
+            entity_iter: self.component_storage.entities.iter_mut(),
             component_type_ids: Comps::type_ids(),
             comps_pd: PhantomData,
         }
@@ -192,3 +189,9 @@ where
         Some(Comps::from_components(&mut entity.components))
     }
 }
+
+#[derive(Debug)]
+pub struct ComponentStorage
+{
+    entities: Vec<Entity>,
+}
-- 
cgit v1.2.3-18-g5258