Fix object placement to use the object's dimensions

Author: BrendanMulcahy

src/Resource/TilemapResource.cpp

@@ -426,6 +426,9 @@ void LoadObjectGroup(tmx::Map& map, tmx::ObjectGroup& layer, MapSegmentDto* mapS
 
         newEntityInstanceDto.properties.emplace("rotation", std::to_string(object.getRotation()));
 
+        auto dimensions = std::to_string(object.getAABB().width) + " " + std::to_string(object.getAABB().height);
+    	newEntityInstanceDto.properties.emplace("dimensions", dimensions);
+    	
         for (const auto& prop : object.getProperties())
         {
             newEntityInstanceDto.properties.emplace(prop.getName(),GetTmxPropertyValue(prop));

src/Scene/Scene.hpp

@@ -292,12 +292,14 @@ TEntity* Scene::CreateEntity(EntitySerializer& serializer, Args&& ... constructo
 
 	Vector2 position;
 	float rotation;
+	Vector2 dimensions;
 
 	serializer
 	    .Add("position", position)
-	    .Add("rotation", rotation);
+	    .Add("rotation", rotation)
+		.Add("dimensions", dimensions);
 
-    entity->_position = position;
+    entity->_position = position + (dimensions / 2);
     entity->_rotation = rotation;
     entity->type = TEntity::Type;
     entity->scene = this;