Scene:Load() doesn't Reload entity's children.

[reepblue]

Notice that components attached to entities with a parent don't save properly. I've ran into an issue where my camera (Which is a child of a pivot) rotation doesn't save automatically. I tried to patch this within the component, but then I noticed that the Load function is skipped when the scene is reloaded. Saving works fine.

This example shows how the component load function is skipped on a scene reload call.

#include "UltraEngine.h"
using namespace UltraEngine;

class TestComponent : public Component
{
public:
    TestComponent()
    {
        name = "TestComponent";
    }

    void Start()
    {
        Print("Start");
    }

    shared_ptr<Component> TestComponent::Copy()
    {
        return std::make_shared<TestComponent>(*this);
    }

    virtual bool Load(table& properties, shared_ptr<Stream> binstream, shared_ptr<Map> scene, const LoadFlags flags)
    {
        Print("Loading TestComponent");
        return true;
    }

    virtual bool Save(table& properties, shared_ptr<Stream> binstream, shared_ptr<Map> scene, const SaveFlags flags)
    {
        Print("Saving TestComponent");
        return true;
    }
};

int main(int argc, const char* argv[])
{
    RegisterComponent<TestComponent>();

    if (AllocConsole())
    {
        freopen("conin$", "r", stdin);
        freopen("conout$", "w", stdout);
        freopen("conout$", "w", stderr);
    }

    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);

    //Create a world
    auto world = CreateWorld();

    //Create a framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Load scene
    auto scene = CreateMap();
    auto camera = CreateCamera(world);

    auto ent1 = CreatePivot(world);
    scene->entities.push_back(ent1);
    auto ent2 = CreatePivot(world);
    ent2->SetParent(ent1);
    ent2->AddComponent<TestComponent>();
    scene->entities.push_back(ent2);

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        if (window->KeyHit(KEY_F5))
        {
            //Save the starting scene to a file
            Print("Saving...");
            scene->Save("game.sav");
        }

        //Reload the starting scene when space key is pressed
        if (window->KeyHit(KEY_F6))
        {
            Print("Loading....");
            scene->Reload("game.sav");
        }

        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

[Josh]

I can confirm the Reload() method is not written in a way that supports this correctly and I need to change it a bit...

[Josh]

Okay, I believe I have this fixed and it will be uploaded in a build tomorrow.

Note that in your example,. the saved state cannot be reloaded unless it was saved during the same session, because your entities are created in code. Entities do not have a unique identifier unless they are either loaded from a map that specifies their UUID, or upon the first call to GetUuid().