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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.
- */
- #include "irrlichttypes_extrabloated.h"
- #include <ISceneNode.h>
- #include "camera.h"
- #ifndef SKY_HEADER
- #define SKY_HEADER
- #define SKY_MATERIAL_COUNT 5
- #define SKY_STAR_COUNT 200
- // Skybox, rendered with zbuffer turned off, before all other nodes.
- class Sky : public scene::ISceneNode
- {
- public:
- //! constructor
- Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id);
- virtual void OnRegisterSceneNode();
- //! renders the node.
- virtual void render();
- virtual const core::aabbox3d<f32>& getBoundingBox() const;
- // Used by Irrlicht for optimizing rendering
- virtual video::SMaterial& getMaterial(u32 i)
- { return m_materials[i]; }
- // Used by Irrlicht for optimizing rendering
- 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; }
- video::SColor getBgColor(){
- return m_visible ? m_bgcolor : m_fallback_bg_color;
- }
- video::SColor getSkyColor(){
- return m_visible ? m_skycolor : m_fallback_bg_color;
- }
-
- bool getCloudsVisible(){ return m_clouds_visible && m_visible; }
- video::SColorf getCloudColor(){ return m_cloudcolor_f; }
- void setVisible(bool visible){ m_visible = visible; }
- void setFallbackBgColor(const video::SColor &fallback_bg_color){
- m_fallback_bg_color = fallback_bg_color;
- }
- private:
- core::aabbox3d<f32> 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 ? x = (1 - m_time_of_day) * 2 : x = 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
- 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;
- }
- 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;
- video::SColor m_fallback_bg_color; // Used when m_visible=false
- bool m_first_update;
- float m_time_of_day;
- float m_time_brightness;
- bool m_sunlight_seen;
- float m_brightness;
- float m_cloud_brightness;
- bool m_clouds_visible;
- bool m_directional_colored_fog;
- video::SColorf m_bgcolor_bright_f;
- video::SColorf m_skycolor_bright_f;
- video::SColorf m_cloudcolor_bright_f;
- video::SColor m_bgcolor;
- video::SColor m_skycolor;
- video::SColorf m_cloudcolor_f;
- v3f m_stars[SKY_STAR_COUNT];
- video::S3DVertex m_star_vertices[SKY_STAR_COUNT*4];
- video::ITexture* m_sun_texture;
- video::ITexture* m_moon_texture;
- video::ITexture* m_sun_tonemap;
- video::ITexture* m_moon_tonemap;
- };
- #endif
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