Add some serialization methods

main.cpp

@@ -20,14 +20,6 @@ extern Coordinator coordinator;
 
 int main(int argc, char *argv[])
 {
-    pugi::xml_document doc;
-    auto declarationNode = doc.append_child(pugi::node_declaration);
-
-    auto root = doc.append_child("root");
-    auto nodeChild = root.append_child("child1");
-    nodeChild.append_child(pugi::node_pcdata).set_value(to_string(15.374).c_str());
-    doc.save_file("test2.xml", PUGIXML_TEXT("  "));
-
     coordinator.RegisterComponent<Texture>();
     coordinator.RegisterComponent<Quad>();
 
@@ -50,13 +42,22 @@ int main(int argc, char *argv[])
         coordinator.SetSystemSignature<MovingSystem>(signature); 
     }
 
+    Entity testEntity;
     for (int i = 0; i < 10; i++)
     {
         Entity entity = coordinator.CreateEntity();
+        testEntity = entity;
         coordinator.AddComponent<Quad>(entity, Quad {50.0f * i, 50.0f * i, 0, 50, 50, 255, 255, 255, 0});
         coordinator.AddComponent<Texture>(entity, Texture{"", 0});
     }
 
+    Quad& quad = coordinator.GetComponent<Quad>(testEntity);
+    pugi::xml_document doc;
+    auto declarationNode = doc.append_child(pugi::node_declaration);
+
+    auto root = doc.append_child("root");
+    quad.archive(root);
+    doc.save_file("test.xml", PUGIXML_TEXT("  "));
     while(true)
     {
         movingSystem->Update();

src/components/Quad.hpp

@@ -1,6 +1,10 @@
 
 #pragma once
 
+#include <external/pugixml/pugixml.hpp>
+
+#include <src/utils/macros.hpp>
+
 struct Quad
 {
     float posX;
@@ -12,4 +16,27 @@ struct Quad
     float g;
     float b;
     float rot;
+
+    void archive(pugi::xml_node& root)
+    {
+        pugi::xml_node quad = root.append_child(VAR_STR(posX));
+
+        archiveVar<float>(quad, posX);
+        archiveVar<float>(quad, posY);
+        archiveVar<float>(quad, posZ);
+        archiveVar<float>(quad, sizeX);
+        archiveVar<float>(quad, sizeY);
+        archiveVar<float>(quad, r);
+        archiveVar<float>(quad, g);
+        archiveVar<float>(quad, b);
+        archiveVar<float>(quad, rot);
+    }
+
+    // Convert to macro to preserve variable name
+    template <class T>
+    void archiveVar(pugi::xml_node& root, T t)
+    {
+        pugi::xml_node nodeChild = root.append_child(VAR_STR(t));
+        nodeChild.append_child(pugi::node_pcdata).set_value(to_string(t).c_str());
+    }
 };

src/utils/macros.hpp

@@ -0,0 +1,4 @@
+
+#pragma once
+
+#define VAR_STR(Variable) (void(Variable),#Variable)