initial ECS based on EnTT

src/binding/src/script_scene.cpp

@@ -1,6 +1,9 @@
 //#include "script_scene.hpp"
 
 #include "pw/scene/node.hpp"
+#include "pw/scene/entity.hpp"
+#include "pw/scene/scene.hpp"
+
 #include "runtime_lua.hpp"
 
 namespace pw {
@@ -8,6 +11,14 @@ namespace pw {
 void register_scene_function(sol::state&,sol::table &ns)
 {
 
+    ns.new_usertype<scene>("scene",
+                           sol::constructors<scene()>());
+
+
+    ns.new_usertype<entity>("entity",
+                            sol::constructors<entity>());
+
+
 	ns.new_usertype<node>("node",
 						  sol::constructors<node()>(),
 						  "add_child",&node::add_child,

src/runtime/CMakeLists.txt

@@ -1,6 +1,7 @@
 
 set(scripts_demo
 	${CMAKE_SOURCE_DIR}/src/scripts/demos/simple_000.lua
+	${CMAKE_SOURCE_DIR}/src/scripts/demos/simple_001.lua
 	)
 
 set(scripts_test

src/scene/include/pw/scene/component.hpp

@@ -38,6 +38,7 @@ class node;
 /**
  * @brief components represent attributes of the scene nodes
  */
+
 class component {
 public:
 

src/scene/include/pw/scene/entity.hpp

@@ -38,24 +38,42 @@ namespace pw {
 
 class entity {
 public:
-    entity() = delete;
+    entity() = default;
+    entity(const entity&) = default;
     entity(scene& s);
     ~entity();
 
     template <typename T,typename... Args>
-    auto add_component(Args&&... args) {
+    T& add_component(Args&&... args) {
-        return _scene._registry.emplace<T>(_entity,std::forward<Args>(args)...);
+        return _registry->emplace<T>(this->_entity,std::forward<Args>(args)...);
+    }
+
+    template <typename T>
+    void remove_component(entity) {
+        _registry->remove<T>(_entity);
     }
 
     template<typename T>
-    bool has_component(){ return _scene._registry.valid(_entity);}
+    T& get_component() {
+        return _registry->get<T>(_entity);
+    }
+
+    template<typename T>
+    bool has_component(){ return _registry->valid(_entity);}
 
     void destroy();
 
+    operator bool() const { return _registry && _entity != entt::null; }
+
+    operator std::uint32_t() const { return static_cast<std::uint32_t>(_entity); }
+
+    bool valid() const { return _registry->valid(_entity); }
 
 private:
-    scene& _scene;
+
+    std::shared_ptr<entt::registry> _registry;
     entt::entity _entity { entt::null };
+
 };
 
 }

src/scene/include/pw/scene/scene.hpp

@@ -32,13 +32,14 @@ namespace pw {
 
 class entity;
 
-class scene : public std::enable_shared_from_this<scene> {
+class scene {
 public:
-    scene() = default;
+
+    scene();
+    ~scene() = default;
 
 protected:
-
+    std::shared_ptr<entt::registry> _registry;
-    entt::registry _registry;
     friend class entity;
 };
 

src/scene/src/entity.cpp

@@ -3,19 +3,48 @@
 
 namespace pw {
 
-entity::entity(scene& s)
+namespace test {
-    : _scene(s)
+
-    , _entity(s._registry.create())
+struct relationship {
+    std::vector<entt::entity> children;
+    entt::entity parent { entt::null };
+
+    static void add_child(entt::registry& r,entt::entity p,entt::entity c)
+    {
+//        auto child_rels = r.view<relationship>(c);
+        // remove potential parents
+
+
+
+    }
+};
+
+
+void testbed()
+{
+    using namespace entt;
+
+    registry r;
+
+    auto e = r.create();
+}
+
+}
+
+entity::entity(scene &s)
+    : _registry(s._registry)
+    , _entity(s._registry->create())
 {
 }
 
 entity::~entity()
 {
+    this->destroy();
 }
 
 void entity::destroy()
 {
-    _scene._registry.destroy(_entity);
+    _registry->destroy(_entity);
 }
 
 }

src/scene/src/scene.cpp

@@ -3,5 +3,10 @@
 
 namespace pw {
 
+scene::scene()
+    : _registry{ std::make_shared<entt::registry>()}
+{
+}
+
 
 }

src/scripts/demos/simple_001.lua

@@ -0,0 +1,12 @@
+--
+-- small demonstrator for Lua binding on pixwerx
+--
+
+-- loading our libraries
+pw.script:load_all()
+
+print("hello pixwerx!")
+
+local s = pw.scene.new()
+
+

src/visual/src/texture.cpp

@@ -66,7 +66,7 @@ struct texture::impl {
 
 
 //
-//
+// Wrapper
 //
 
 texture::texture()