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(s32 id, ITextureSource *tsrc);
39 virtual void OnRegisterSceneNode();
42 virtual void render();
44 virtual const aabb3f &getBoundingBox() const { return m_box; }
46 // Used by Irrlicht for optimizing rendering
47 virtual video::SMaterial &getMaterial(u32 i) { return m_materials[i]; }
49 // Used by Irrlicht for optimizing rendering
50 virtual u32 getMaterialCount() const { return SKY_MATERIAL_COUNT; }
52 void update(float m_time_of_day, float time_brightness, float direct_brightness,
53 bool sunlight_seen, CameraMode cam_mode, float yaw, float pitch);
55 float getBrightness() { return m_brightness; }
57 const video::SColor &getBgColor() const
59 return m_visible ? m_bgcolor : m_fallback_bg_color;
62 const video::SColor &getSkyColor() const
64 return m_visible ? m_skycolor : m_fallback_bg_color;
67 bool getCloudsVisible() const { return m_clouds_visible && m_clouds_enabled; }
68 const video::SColorf &getCloudColor() const { return m_cloudcolor_f; }
70 void setVisible(bool visible) { m_visible = visible; }
71 // Set only from set_sky API
72 void setCloudsEnabled(bool clouds_enabled) { m_clouds_enabled = clouds_enabled; }
73 void setFallbackBgColor(const video::SColor &fallback_bg_color)
75 m_fallback_bg_color = fallback_bg_color;
77 void overrideColors(const video::SColor &bgcolor, const video::SColor &skycolor)
80 m_skycolor = skycolor;
82 void setBodiesVisible(bool visible) { m_bodies_visible = visible; }
86 video::SMaterial m_materials[SKY_MATERIAL_COUNT];
88 // How much sun & moon transition should affect horizon color
89 float m_horizon_blend()
93 float x = m_time_of_day >= 0.5 ? (1 - m_time_of_day) * 2
98 if (x <= 0.4) // when the sun and moon are aligned
99 return (x - 0.3) * 10;
101 return (0.5 - x) * 10;
105 // Mix two colors by a given amount
106 video::SColor m_mix_scolor(video::SColor col1, video::SColor col2, f32 factor)
108 video::SColor result = video::SColor(
109 col1.getAlpha() * (1 - factor) + col2.getAlpha() * factor,
110 col1.getRed() * (1 - factor) + col2.getRed() * factor,
111 col1.getGreen() * (1 - factor) + col2.getGreen() * factor,
112 col1.getBlue() * (1 - factor) + col2.getBlue() * factor);
115 video::SColorf m_mix_scolorf(video::SColorf col1, video::SColorf col2, f32 factor)
117 video::SColorf result =
118 video::SColorf(col1.r * (1 - factor) + col2.r * factor,
119 col1.g * (1 - factor) + col2.g * factor,
120 col1.b * (1 - factor) + col2.b * factor,
121 col1.a * (1 - factor) + col2.a * factor);
125 bool m_visible = true;
126 // Used when m_visible=false
127 video::SColor m_fallback_bg_color = video::SColor(255, 255, 255, 255);
128 bool m_first_update = true;
130 float m_time_brightness;
131 bool m_sunlight_seen;
132 float m_brightness = 0.5f;
133 float m_cloud_brightness = 0.5f;
134 bool m_clouds_visible; // Whether clouds are disabled due to player underground
135 bool m_clouds_enabled = true; // Initialised to true, reset only by set_sky API
136 bool m_directional_colored_fog;
137 bool m_bodies_visible = true; // sun, moon, stars
138 video::SColorf m_bgcolor_bright_f = video::SColorf(1.0f, 1.0f, 1.0f, 1.0f);
139 video::SColorf m_skycolor_bright_f = video::SColorf(1.0f, 1.0f, 1.0f, 1.0f);
140 video::SColorf m_cloudcolor_bright_f = video::SColorf(1.0f, 1.0f, 1.0f, 1.0f);
141 video::SColor m_bgcolor;
142 video::SColor m_skycolor;
143 video::SColorf m_cloudcolor_f;
144 v3f m_stars[SKY_STAR_COUNT];
145 video::ITexture *m_sun_texture;
146 video::ITexture *m_moon_texture;
147 video::ITexture *m_sun_tonemap;
148 video::ITexture *m_moon_tonemap;