Systems.h

/*
 * Copyright 2021 Adobe. All rights reserved.
 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
#pragma once
 
#include <lagrange/ui/Entity.h>
#include <lagrange/ui/api.h>
 
#include <vector>
 
namespace lagrange {
namespace ui {

class LA_UI_API Systems
{
public:
    enum class Stage : int { Init = 0, Interface, Simulation, Render, Post, _SIZE };

    void run(Stage stage, Registry& registry);

    StringID add(Stage stage, const System& system, StringID id = 0);

    bool enable(StringID id, bool value);

    bool succeeds(StringID system_id, StringID after_id);

    bool remove(StringID id);
 
private:
    struct SystemItem
    {
        System system;
        Stage stage;
        StringID id;
        bool enabled = true;
    };
 
    StringID new_id();
    StringID m_id_counter = 1;
 
    std::vector<SystemItem> m_items;
};
 
 
} // namespace ui
} // namespace lagrange