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- // SuperTux
- // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
- // Copyright (C) 2024 bruhmoent
- //
- // This program is free software: you can redistribute it and/or modify
- // it under the terms of the GNU General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // This program is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public License
- // along with this program. If not, see <http://www.gnu.org/licenses/>.
- #ifndef HEADER_SUPERTUX_OBJECT_SNOW_PARTICLE_SYSTEM_HPP
- #define HEADER_SUPERTUX_OBJECT_SNOW_PARTICLE_SYSTEM_HPP
- #include "object/particlesystem.hpp"
- #include "supertux/timer.hpp"
- class ReaderMapping;
- class SnowParticleSystem final : public ParticleSystem
- {
- public:
- SnowParticleSystem();
- SnowParticleSystem(const ReaderMapping& reader);
- ~SnowParticleSystem() override;
- virtual void update(float dt_sec) override;
- static std::string class_name() { return "particles-snow"; }
- virtual std::string get_class_name() const override { return class_name(); }
- static std::string display_name() { return _("Snow Particles"); }
- virtual std::string get_display_name() const override { return display_name(); }
- virtual ObjectSettings get_settings() override;
- virtual const std::string get_icon_path() const override
- {
- return "images/engine/editor/snow.png";
- }
- private:
- void init();
- class SnowParticle : public Particle
- {
- public:
- float speed;
- float wobble;
- float anchorx;
- float drift_speed;
- // Turning speed.
- float spin_speed;
- // For inertia.
- unsigned int flake_size;
- SnowParticle() :
- speed(),
- wobble(),
- anchorx(),
- drift_speed(),
- spin_speed(),
- flake_size()
- {}
- };
- // Wind is simulated in discrete "gusts",
- // gust states:
- enum State {
- ATTACKING,
- DECAYING,
- SUSTAINING,
- RELEASING,
- RESTING,
- MAX_STATE
- };
- private:
- State m_state;
- // Gust state delay timer.
- Timer m_timer;
- // Peak magnitude of gust is gust_onset * randf(5).
- float m_gust_onset;
- // Current blowing velocity of gust.
- float m_gust_current_velocity;
- float m_wind_speed;
- float m_epsilon; // Velocity changes by up to this much each tick.
- float m_spin_speed;
- float m_state_length; // Interval for how long to affect the particles with wind.
- SurfacePtr m_snowimages[3];
-
- private:
- SnowParticleSystem(const SnowParticleSystem&) = delete;
- SnowParticleSystem& operator=(const SnowParticleSystem&) = delete;
- };
- #endif
- /* EOF */
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