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/*
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* Copyright (C) 2023 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_NUPTIAL_FLIGHT_STATE_HPP
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#define ANTKEEPER_NUPTIAL_FLIGHT_STATE_HPP
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#include "game/states/game-state.hpp"
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#include <engine/entity/id.hpp>
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#include <engine/math/vector.hpp>
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#include <engine/event/subscription.hpp>
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#include <engine/scene/text.hpp>
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#include <engine/utility/text-file.hpp>
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#include <memory>
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class nuptial_flight_state: public game_state
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{
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public:
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explicit nuptial_flight_state(::game& ctx);
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virtual ~nuptial_flight_state();
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private:
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void create_camera_rig();
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void destroy_camera_rig();
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void set_camera_rig_zoom(float zoom);
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void satisfy_camera_rig_constraints();
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void setup_controls();
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void enable_controls();
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void disable_controls();
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void select_entity(entity::id entity_id);
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void select_nearest_entity(const math::fvec3& direction);
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// Camera
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entity::id camera_rig_focus_eid;
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entity::id camera_rig_focus_ease_to_eid;
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entity::id camera_rig_eid;
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entity::id camera_rig_spring_translation_eid;
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entity::id camera_rig_spring_rotation_eid;
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entity::id camera_rig_copy_translation_eid;
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entity::id camera_rig_pivot_eid;
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float camera_rig_near_distance;
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float camera_rig_far_distance;
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float camera_rig_near_fov;
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float camera_rig_far_fov;
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float camera_rig_zoom_speed;
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float camera_rig_zoom;
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entity::id camera_rig_fov_spring_eid;
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float camera_rig_translation_spring_angular_frequency;
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float camera_rig_rotation_spring_angular_frequency;
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float camera_rig_fov_spring_angular_frequency;
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float camera_rig_focus_ease_to_duration;
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// Ants
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entity::id swarm_eid;
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// Name generation
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std::shared_ptr<text_file> name_pool;
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// Picking
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std::uint32_t selected_picking_flag;
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entity::id selected_eid;
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// UI
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scene::text selection_text;
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// Controls
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bool mouse_look{false};
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std::vector<std::shared_ptr<::event::subscription>> action_subscriptions;
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std::shared_ptr<::event::subscription> mouse_motion_subscription;
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};
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#endif // ANTKEEPER_NUPTIAL_FLIGHT_STATE_HPP
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