added save/load structure to entityx

diff --git a/lib/entityx/entityx/Entity.h b/lib/entityx/entityx/Entity.h
index dfa40624b68a018d069b0e6bf449eaaee2b6483c..11bacfa62f43a4765e5ba3ca11aaa60ac42bf3fc 100644 (file)
--- a/lib/entityx/entityx/Entity.h
+++ b/lib/entityx/entityx/Entity.h
@@ -34,6 +34,8 @@
 #include "entityx/Event.h"
 #include "entityx/help/NonCopyable.h"
 
+class Archive;
+
 namespace entityx {
 
 typedef std::uint32_t uint32_t;
@@ -242,6 +244,8 @@ struct BaseComponent {
   void operator delete([[maybe_unused]] void *p) { fail(); }
   void operator delete[]([[maybe_unused]] void *p) { fail(); }
 
+  virtual void save([[maybe_unused]] Archive& ar) {}
+  virtual void load([[maybe_unused]] Archive& ar) {}
 
  protected:
   static void fail() {
@@ -341,6 +345,7 @@ public:
   virtual ~BaseComponentHelper() {}
   virtual void remove_component(Entity e) = 0;
   virtual void copy_component_to(Entity source, Entity target) = 0;
+  virtual BaseComponent *get_component(Entity e) = 0;
 };
 
 template <typename C>
@@ -352,6 +357,9 @@ public:
   void copy_component_to(Entity source, Entity target) override {
     target.assign_from_copy<C>(*(source.component<C>().get()));
   }
+  BaseComponent *get_component(Entity e) override {
+    return e.component<C>().get();
+  }
 };
 
 /**
@@ -741,6 +749,20 @@ class EntityManager : entityx::help::NonCopyable {
     return std::make_tuple(component<const Components>(id)...);
   }
 
+  /**
+   * EDIT by tcsullivan
+   * Iterates through all components of a given Entity.
+   */
+  void entity_each_component(Entity entity, std::function<void(BaseComponent*)> f)
+  {
+    auto mask = entity.component_mask();
+    for (size_t i = 0; i < component_helpers_.size(); i++) {
+      BaseComponentHelper *helper = component_helpers_[i];
+      if (helper && mask.test(i))
+        f(helper->get_component(entity));
+    }
+  }
+
   /**
    * Find Entities that have all of the specified Components.
    *