feat(ecs): add action to add component(s) to entity

1 files changed, 11 insertions, 0 deletions

diff --git a/ecs/src/actions.rs b/ecs/src/actions.rs
index 2ee5518..038f617 100644
--- a/ecs/src/actions.rs
+++ b/ecs/src/actions.rs
@@ -3,6 +3,7 @@ use std::marker::PhantomData;
 use std::sync::{Arc, Weak};
 
 use crate::component::{Component, Sequence as ComponentSequence};
+use crate::entity::Uid as EntityUid;
 use crate::lock::{Lock, WriteGuard};
 use crate::system::{NoInitParamFlag, Param as SystemParam, System};
 use crate::{ActionQueue, World};
@@ -23,6 +24,15 @@ impl<'world> Actions<'world>
         self.action_queue.push(Action::Spawn(components.into_vec()));
     }
 
+    /// Adds component(s) to a entity.
+    pub fn add_components<Comps>(&mut self, entity_uid: EntityUid, components: Comps)
+    where
+        Comps: ComponentSequence,
+    {
+        self.action_queue
+            .push(Action::AddComponents(entity_uid, components.into_vec()));
+    }
+
     /// Adds stopping the loop in [`Engine::event_loop`] at the next opportune time to the
     /// action queue.
     pub fn stop(&mut self)
@@ -129,6 +139,7 @@ impl<'weak_ref> Ref<'weak_ref>
 pub(crate) enum Action
 {
     Spawn(Vec<Box<dyn Component>>),
+    AddComponents(EntityUid, Vec<Box<dyn Component>>),
     Stop,
 }