Entities respect their parent's transforms again

src/run_modes/editor/component_guis.cpp

@@ -15,6 +15,10 @@
 
 namespace lunarium { namespace editor
 {
+    // TODO: Add an X button on the right of the title line to remove components
+    //          Will need to have the functions return a bool indicating when this
+    //          button is pressed
+
     /////////////////////////////////////////////////////////////////////
     //				COMMON SECTIONS
     /////////////////////////////////////////////////////////////////////

src/run_modes/editor/panels/properties_view.cpp

@@ -151,7 +151,8 @@ namespace lunarium { namespace editor
     
     void PropertiesView::ShowEntity()
     {
-        ImGui::Text("UUID: %ull", (u64)mpSelectedEntity->GetUUID());
+        LUUID id = mpSelectedEntity->GetUUID();
+        ImGui::Text("UUID: %llu", (u64)id);
         char buffer[256] = { 0 };
         strcpy(buffer, mpSelectedEntity->GetName().c_str());
         ImGui::Text("Name:");

src/world/entity.cpp

@@ -16,15 +16,14 @@ namespace lunarium
     Entity::Entity(World& w)
         : mHandle(entt::null), mWorld(w), mParent(0), mParentSet(false)
     {
-        mUUID = UUID::GetNewID();
         Init();
     }
 
-    Entity::Entity(World& w, LUUID uuid, entt::entity handle)
-        : mHandle(handle), mWorld(w), mUUID(uuid)
-    {
-        Init();
-    }
+    // Entity::Entity(World& w, entt::entity handle)
+    //     : mHandle(handle), mWorld(w)
+    // {
+    //     Init();
+    // }
 
     void Entity::Init()
     {
@@ -35,11 +34,14 @@ namespace lunarium
         {
             Logger::Warn(LogCategory::GAME_SYSTEM, "Requested entity handle was not used");
         }
+
+        AddComponent<UUIDComponent>(UUID::GetNewID());
     }
 
-    LUUID Entity::GetUUID() const
+    LUUID Entity::GetUUID()
     {
-        return mUUID;
+        return GetComponent<UUIDComponent>().UUID;
+        //   return mUUID;
     }
     
     entt::entity Entity::GetEnttHandle() const
@@ -68,7 +70,7 @@ namespace lunarium
     void Entity::AddChild(LUUID child)
     {
         Entity* e = mWorld.GetEntity(child);
-        e->AddComponent<ParentEntityComponent>(mUUID);
+        e->AddComponent<ParentEntityComponent>(GetUUID());
 
         if (!HasComponent<ChildrenComponent>())
         {
@@ -151,7 +153,7 @@ namespace lunarium
     {
         #if !BUILD_NO_EDITOR // Only does this when this is an editor build
 
-        node["UUID"] = mUUID;
+       // node["UUID"] = mUUID;
         node["name"] = mName;
 
         auto& components = node["components"];
@@ -299,7 +301,7 @@ namespace lunarium
     {
         #if !BUILD_NO_EDITOR // Only does this when this is an editor build
 
-        mUUID = node["UUID"].get<u64>();
+        //mUUID = node["UUID"].get<u64>();
         mName = node["name"].get<std::string>();
 
         // TODO: Load components
@@ -313,7 +315,11 @@ namespace lunarium
             if ("UUIDComponent" == comp_type_name)
             {
                 LUUID uuid = comp["UUID"].get<u64>();
-                AddComponent<UUIDComponent>(uuid);
+                //AddComponent<UUIDComponent>(uuid);
+                if (HasComponent<UUIDComponent>())
+                {
+                    GetComponent<UUIDComponent>().UUID = uuid;
+                }
             }
 
             if ("TagComponent" == comp_type_name)
@@ -433,8 +439,8 @@ namespace lunarium
     
     bool Entity::IsValidNode(nlohmann::ordered_json& node)
     {
-        if (node["UUID"].is_null()) { return false; }
-        if (!node["UUID"].is_number()) { return false; }
+        // if (node["UUID"].is_null()) { return false; }
+        // if (!node["UUID"].is_number()) { return false; }
 
         return true;
     }

src/world/entity.h

@@ -22,7 +22,7 @@ namespace lunarium // TODO: : public JSONSerializable
     {
     public:
         Entity(World& w);
-        Entity(World& w, LUUID uuid, entt::entity handle = entt::null);
+        //Entity(World& w, entt::entity handle = entt::null);
 
         // These component methods are based on methods from the Hazel engine, written by Cherno
         // https://github.com/TheCherno/Hazel/blob/dev/Hazel/src/Hazel/Scene/Entity.h
@@ -64,7 +64,7 @@ namespace lunarium // TODO: : public JSONSerializable
 			mWorld.GetEntityRegistry()->remove<T>(mHandle);
 		}
 
-        LUUID GetUUID() const;
+        LUUID GetUUID();
         entt::entity GetEnttHandle() const;
         std::string GetName() const;
         void SetName(std::string name);
@@ -86,7 +86,7 @@ namespace lunarium // TODO: : public JSONSerializable
         [[nodiscard]] virtual nlohmann::ordered_json AsJSON();
 
     private:
-        LUUID mUUID;
+        //LUUID mUUID;
         LUUID mParent;
         bool mParentSet;
         std::string mName;

src/world/world.cpp

@@ -111,9 +111,16 @@ namespace lunarium
             Rectangle rect(transform.Position.x, transform.Position.y, blockout.Size.x, blockout.Size.y);
             Color color(blockout.Color.x, blockout.Color.y, blockout.Color.z, blockout.Color.w);
 
-            // TODO: Get and apply parent transforms
+            // Get and apply parent transforms
+            LUUID uuid = mECSRegistry.get<UUIDComponent>(entity).UUID;
+            Entity* pEnt = GetEntity(uuid);
+            glm::mat4 parent_transform = glm::mat4(1.0f);
+            if (pEnt->HasComponent<ParentEntityComponent>())
+            {
+                parent_transform = GetParentTransform(uuid);
+            }
 
-            pGraphics->DrawQuad(rect, color, nullptr, -transform.Rotation.z, Rectangle(-1, -1, -1, -1), glm::mat4(1.0f));
+            pGraphics->DrawQuad(rect, color, nullptr, -transform.Rotation.z, Rectangle(-1, -1, -1, -1), parent_transform);
         }
     }