3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #include <ISceneNode.h>
22 #include "irrlichttypes_extrabloated.h"
27 #define SKY_MATERIAL_COUNT 5
28 #define SKY_STAR_COUNT 200
32 // Skybox, rendered with zbuffer turned off, before all other nodes.
33 class Sky : public scene::ISceneNode
37 Sky(scene::ISceneNode *parent, scene::ISceneManager *mgr, s32 id,
38 ITextureSource *tsrc);
40 virtual void OnRegisterSceneNode();
43 virtual void render();
45 virtual const aabb3f &getBoundingBox() const { return m_box; }
47 // Used by Irrlicht for optimizing rendering
48 virtual video::SMaterial &getMaterial(u32 i) { return m_materials[i]; }
50 // Used by Irrlicht for optimizing rendering
51 virtual u32 getMaterialCount() const { return SKY_MATERIAL_COUNT; }
53 void update(float m_time_of_day, float time_brightness, float direct_brightness,
54 bool sunlight_seen, CameraMode cam_mode, float yaw, float pitch);
56 float getBrightness() { return m_brightness; }
58 const video::SColor &getBgColor() const
60 return m_visible ? m_bgcolor : m_fallback_bg_color;
63 const video::SColor &getSkyColor() const
65 return m_visible ? m_skycolor : m_fallback_bg_color;
68 bool getCloudsVisible() { return m_clouds_visible && m_visible; }
69 const video::SColorf &getCloudColor() { return m_cloudcolor_f; }
71 void setVisible(bool visible) { m_visible = visible; }
72 void setFallbackBgColor(const video::SColor &fallback_bg_color)
74 m_fallback_bg_color = fallback_bg_color;
79 video::SMaterial m_materials[SKY_MATERIAL_COUNT];
81 // How much sun & moon transition should affect horizon color
82 float m_horizon_blend()
86 float x = m_time_of_day >= 0.5 ? (1 - m_time_of_day) * 2
91 if (x <= 0.4) // when the sun and moon are aligned
92 return (x - 0.3) * 10;
94 return (0.5 - x) * 10;
98 // Mix two colors by a given amount
99 video::SColor m_mix_scolor(video::SColor col1, video::SColor col2, f32 factor)
101 video::SColor result = video::SColor(
102 col1.getAlpha() * (1 - factor) + col2.getAlpha() * factor,
103 col1.getRed() * (1 - factor) + col2.getRed() * factor,
104 col1.getGreen() * (1 - factor) + col2.getGreen() * factor,
105 col1.getBlue() * (1 - factor) + col2.getBlue() * factor);
108 video::SColorf m_mix_scolorf(video::SColorf col1, video::SColorf col2, f32 factor)
110 video::SColorf result =
111 video::SColorf(col1.r * (1 - factor) + col2.r * factor,
112 col1.g * (1 - factor) + col2.g * factor,
113 col1.b * (1 - factor) + col2.b * factor,
114 col1.a * (1 - factor) + col2.a * factor);
119 video::SColor m_fallback_bg_color; // Used when m_visible=false
122 float m_time_brightness;
123 bool m_sunlight_seen;
125 float m_cloud_brightness;
126 bool m_clouds_visible;
127 bool m_directional_colored_fog;
128 video::SColorf m_bgcolor_bright_f;
129 video::SColorf m_skycolor_bright_f;
130 video::SColorf m_cloudcolor_bright_f;
131 video::SColor m_bgcolor;
132 video::SColor m_skycolor;
133 video::SColorf m_cloudcolor_f;
134 v3f m_stars[SKY_STAR_COUNT];
135 video::S3DVertex m_star_vertices[SKY_STAR_COUNT * 4];
136 video::ITexture *m_sun_texture;
137 video::ITexture *m_moon_texture;
138 video::ITexture *m_sun_tonemap;
139 video::ITexture *m_moon_tonemap;