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- /*
- Minetest
- Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #pragma once
- #include "irrlichttypes_extrabloated.h"
- #include <ISceneNode.h>
- #include <array>
- #include "camera.h"
- #include "irr_ptr.h"
- #include "shader.h"
- #include "skyparams.h"
- #define SKY_MATERIAL_COUNT 12
- class ITextureSource;
- // Skybox, rendered with zbuffer turned off, before all other nodes.
- class Sky : public scene::ISceneNode
- {
- public:
- //! constructor
- Sky(s32 id, RenderingEngine *rendering_engine, ITextureSource *tsrc, IShaderSource *ssrc);
- virtual void OnRegisterSceneNode();
- //! renders the node.
- virtual void render();
- virtual const aabb3f &getBoundingBox() const { return m_box; }
- // Used by Irrlicht for optimizing rendering
- virtual video::SMaterial &getMaterial(u32 i) { return m_materials[i]; }
- virtual u32 getMaterialCount() const { return SKY_MATERIAL_COUNT; }
- void update(float m_time_of_day, float time_brightness, float direct_brightness,
- bool sunlight_seen, CameraMode cam_mode, float yaw, float pitch);
- float getBrightness() { return m_brightness; }
- const video::SColor &getBgColor() const
- {
- return m_visible ? m_bgcolor : m_fallback_bg_color;
- }
- const video::SColor &getSkyColor() const
- {
- return m_visible ? m_skycolor : m_fallback_bg_color;
- }
- void setSunVisible(bool sun_visible) { m_sun_params.visible = sun_visible; }
- bool getSunVisible() const { return m_sun_params.visible; }
- void setSunTexture(const std::string &sun_texture,
- const std::string &sun_tonemap, ITextureSource *tsrc);
- void setSunScale(f32 sun_scale) { m_sun_params.scale = sun_scale; }
- void setSunriseVisible(bool glow_visible) { m_sun_params.sunrise_visible = glow_visible; }
- void setSunriseTexture(const std::string &sunglow_texture, ITextureSource* tsrc);
- void setMoonVisible(bool moon_visible) { m_moon_params.visible = moon_visible; }
- bool getMoonVisible() const { return m_moon_params.visible; }
- void setMoonTexture(const std::string &moon_texture,
- const std::string &moon_tonemap, ITextureSource *tsrc);
- void setMoonScale(f32 moon_scale) { m_moon_params.scale = moon_scale; }
- void setStarsVisible(bool stars_visible) { m_star_params.visible = stars_visible; }
- void setStarCount(u16 star_count);
- void setStarColor(video::SColor star_color) { m_star_params.starcolor = star_color; }
- void setStarScale(f32 star_scale) { m_star_params.scale = star_scale; updateStars(); }
- void setStarDayOpacity(f32 day_opacity) { m_star_params.day_opacity = day_opacity; }
- bool getCloudsVisible() const { return m_clouds_visible && m_clouds_enabled; }
- const video::SColorf &getCloudColor() const { return m_cloudcolor_f; }
- void setVisible(bool visible) { m_visible = visible; }
- // Set only from set_sky API
- void setCloudsEnabled(bool clouds_enabled) { m_clouds_enabled = clouds_enabled; }
- void setFallbackBgColor(video::SColor fallback_bg_color)
- {
- m_fallback_bg_color = fallback_bg_color;
- }
- void overrideColors(video::SColor bgcolor, video::SColor skycolor)
- {
- m_bgcolor = bgcolor;
- m_skycolor = skycolor;
- }
- void setSkyColors(const SkyColor &sky_color);
- void setHorizonTint(video::SColor sun_tint, video::SColor moon_tint,
- const std::string &use_sun_tint);
- void setInClouds(bool clouds) { m_in_clouds = clouds; }
- void clearSkyboxTextures() { m_sky_params.textures.clear(); }
- void addTextureToSkybox(const std::string &texture, int material_id,
- ITextureSource *tsrc);
- const video::SColorf &getCurrentStarColor() const { return m_star_color; }
- float getSkyBodyOrbitTilt() const { return m_sky_body_orbit_tilt; }
- private:
- aabb3f m_box;
- video::SMaterial m_materials[SKY_MATERIAL_COUNT];
- // How much sun & moon transition should affect horizon color
- float m_horizon_blend()
- {
- if (!m_sunlight_seen)
- return 0;
- float x = m_time_of_day >= 0.5 ? (1 - m_time_of_day) * 2
- : m_time_of_day * 2;
- if (x <= 0.3)
- return 0;
- if (x <= 0.4) // when the sun and moon are aligned
- return (x - 0.3) * 10;
- if (x <= 0.5)
- return (0.5 - x) * 10;
- return 0;
- }
- // Mix two colors by a given amount
- static video::SColor m_mix_scolor(video::SColor col1, video::SColor col2, f32 factor)
- {
- video::SColor result = video::SColor(
- col1.getAlpha() * (1 - factor) + col2.getAlpha() * factor,
- col1.getRed() * (1 - factor) + col2.getRed() * factor,
- col1.getGreen() * (1 - factor) + col2.getGreen() * factor,
- col1.getBlue() * (1 - factor) + col2.getBlue() * factor);
- return result;
- }
- static video::SColorf m_mix_scolorf(video::SColorf col1, video::SColorf col2, f32 factor)
- {
- video::SColorf result =
- video::SColorf(col1.r * (1 - factor) + col2.r * factor,
- col1.g * (1 - factor) + col2.g * factor,
- col1.b * (1 - factor) + col2.b * factor,
- col1.a * (1 - factor) + col2.a * factor);
- return result;
- }
- bool m_visible = true;
- // Used when m_visible=false
- video::SColor m_fallback_bg_color = video::SColor(255, 255, 255, 255);
- bool m_first_update = true; // Set before the sky is updated for the first time
- float m_time_of_day;
- float m_time_brightness;
- bool m_sunlight_seen;
- float m_brightness = 0.5f;
- float m_cloud_brightness = 0.5f;
- bool m_clouds_visible; // Whether clouds are disabled due to player underground
- bool m_clouds_enabled = true; // Initialised to true, reset only by set_sky API
- bool m_directional_colored_fog;
- bool m_in_clouds = true; // Prevent duplicating bools to remember old values
- bool m_enable_shaders = false;
- float m_sky_body_orbit_tilt = 0.0f;
- video::SColorf m_bgcolor_bright_f = video::SColorf(1.0f, 1.0f, 1.0f, 1.0f);
- video::SColorf m_skycolor_bright_f = video::SColorf(1.0f, 1.0f, 1.0f, 1.0f);
- video::SColorf m_cloudcolor_bright_f = video::SColorf(1.0f, 1.0f, 1.0f, 1.0f);
- video::SColor m_bgcolor;
- video::SColor m_skycolor;
- video::SColorf m_cloudcolor_f;
- // pure white: becomes "diffuse light component" for clouds
- video::SColorf m_cloudcolor_day_f = video::SColorf(1, 1, 1, 1);
- // dawn-factoring version of pure white (note: R is above 1.0)
- video::SColorf m_cloudcolor_dawn_f = video::SColorf(
- 255.0f/240.0f,
- 223.0f/240.0f,
- 191.0f/255.0f
- );
- SkyboxParams m_sky_params;
- SunParams m_sun_params;
- MoonParams m_moon_params;
- StarParams m_star_params;
- bool m_default_tint = true;
- u64 m_seed = 0;
- irr_ptr<scene::SMeshBuffer> m_stars;
- video::SColorf m_star_color;
- video::ITexture *m_sun_texture;
- video::ITexture *m_moon_texture;
- video::ITexture *m_sun_tonemap;
- video::ITexture *m_moon_tonemap;
- void updateStars();
- void draw_sun(video::IVideoDriver *driver, float sunsize, const video::SColor &suncolor,
- const video::SColor &suncolor2, float wicked_time_of_day);
- void draw_moon(video::IVideoDriver *driver, float moonsize, const video::SColor &mooncolor,
- const video::SColor &mooncolor2, float wicked_time_of_day);
- void draw_sky_body(std::array<video::S3DVertex, 4> &vertices,
- float pos_1, float pos_2, const video::SColor &c);
- void draw_stars(video::IVideoDriver *driver, float wicked_time_of_day);
- void place_sky_body(std::array<video::S3DVertex, 4> &vertices,
- float horizon_position, float day_position);
- };
- // calculates value for sky body positions for the given observed time of day
- // this is used to draw both Sun/Moon and shadows
- float getWickedTimeOfDay(float time_of_day);
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