Merge pull request #35 from x-w/master

Add "Entity::component() const" which returns a handle of const component

1 files changed, 10 insertions, 1 deletions

diff --git a/entityx/Entity.h b/entityx/Entity.h
index 3504f6f..51ecb03 100644
--- a/entityx/Entity.h
+++ b/entityx/Entity.h
@@ -130,7 +130,10 @@ public:
 
   template <typename C>
   ComponentHandle<C> component();
-
+  
+  template <typename C>
+  const ComponentHandle<const C> component() const;
+    
   template <typename C>
   bool has_component() const;
 
@@ -784,6 +787,12 @@ ComponentHandle<C> Entity::component() {
 }
 
 template <typename C>
+const ComponentHandle<const C> Entity::component() const {
+  assert(valid());
+  return manager_->component<const C>(id_);
+}
+
+template <typename C>
 bool Entity::has_component() const {
   assert(valid());
   return manager_->has_component<C>(id_);