Entity render structure

examples/cube.rs

@@ -1,19 +1,11 @@
 use osmium::entity::Component;
 
-pub struct Velocity(pub i32);
-
-impl Component for Velocity {
-    fn tick(&mut self) {}
-}
-
 fn main() {
     let mut engine = osmium::init();
 
     engine.thread("Main.tick", || {});
 
-    let mut my_rect = engine.draw(|r| {
+    let mut my_rect = engine.entity(|r| {
         // r.draw_rect(0, 0, 10, 10);
     });
-
-    my_rect.component(Velocity(10));
 }

src/entity.rs

@@ -1,13 +1,32 @@
+use crate::Renderer;
+
 pub trait Component {
-    fn init_add(&mut self) {}
-    fn init(&mut self) {}
-    fn tick(&mut self) {}
+    #[allow(unused_variables)]
+    fn init_add(&mut self, entity: &mut Entity) {}
+    #[allow(unused_variables)]
+    fn init(&mut self, entity: &mut Entity) {}
+    #[allow(unused_variables)]
+    fn tick(&mut self, entity: &mut Entity) {}
 }
 
-pub struct Entity(pub Vec<Box<dyn Component>>);
+pub struct Entity {
+    components: Vec<Box<dyn Component>>,
+    render: Box<dyn FnMut(&mut Renderer)>,
+}
 
 impl Entity {
+    pub fn new<F: FnMut(&mut Renderer) + 'static>(render: F) -> Self {
+        Self {
+            components: Vec::new(),
+            render: Box::new(render),
+        }
+    }
+
     pub fn component<C: Component + 'static>(&mut self, c: C) {
-        self.0.push(Box::new(c));
+        self.components.push(Box::new(c));
+    }
+
+    pub fn render(&mut self, renderer: &mut Renderer) {
+        (self.render)(renderer)
     }
 }

src/lib.rs

@@ -21,9 +21,11 @@ impl Engine {
         self.threads.insert(label.to_string(), Box::new(f));
     }
 
-    pub fn draw<F: FnMut(&mut Renderer) + 'static>(&self, mut f: F) -> entity::Entity {
-        let mut renderer = Renderer {};
-        (f)(&mut renderer);
-        entity::Entity(Vec::new())
+    pub fn entity<F: FnMut(&mut Renderer) + 'static>(&mut self, f: F) -> &mut entity::Entity {
+        let e = entity::Entity::new(f);
+        self.entities.push(e);
+        self.entities
+            .last_mut()
+            .expect("Unable to obtain entity (unspawned)")
     }
 }