mirror of https://github.com/minetest/minetest.git
507 lines
17 KiB
C++
507 lines
17 KiB
C++
#include "sky.h"
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#include "IVideoDriver.h"
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#include "ISceneManager.h"
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#include "ICameraSceneNode.h"
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#include "S3DVertex.h"
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#include "tile.h" // getTexturePath
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#include "noise.h" // easeCurve
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#include "main.h" // g_profiler
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#include "profiler.h"
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#include "util/numeric.h" // MYMIN
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//! constructor
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Sky::Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id):
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scene::ISceneNode(parent, mgr, id),
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m_first_update(true),
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m_brightness(0.5),
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m_cloud_brightness(0.5),
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m_bgcolor_bright_f(1,1,1,1),
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m_skycolor_bright_f(1,1,1,1),
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m_cloudcolor_bright_f(1,1,1,1)
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{
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setAutomaticCulling(scene::EAC_OFF);
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Box.MaxEdge.set(0,0,0);
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Box.MinEdge.set(0,0,0);
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// create material
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video::SMaterial mat;
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mat.Lighting = false;
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mat.ZBuffer = video::ECFN_NEVER;
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mat.ZWriteEnable = false;
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mat.AntiAliasing=0;
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mat.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
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mat.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
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mat.BackfaceCulling = false;
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m_materials[0] = mat;
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m_materials[1] = mat;
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//m_materials[1].MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
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m_materials[1].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
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m_materials[2] = mat;
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m_materials[2].setTexture(0, mgr->getVideoDriver()->getTexture(
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getTexturePath("sunrisebg.png").c_str()));
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m_materials[2].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
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//m_materials[2].MaterialType = video::EMT_TRANSPARENT_ADD_COLOR;
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for(u32 i=0; i<SKY_STAR_COUNT; i++){
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m_stars[i] = v3f(
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myrand_range(-10000,10000),
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myrand_range(-10000,10000),
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myrand_range(-10000,10000)
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);
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m_stars[i].normalize();
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}
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}
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void Sky::OnRegisterSceneNode()
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{
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if (IsVisible)
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SceneManager->registerNodeForRendering(this, scene::ESNRP_SKY_BOX);
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scene::ISceneNode::OnRegisterSceneNode();
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}
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const core::aabbox3d<f32>& Sky::getBoundingBox() const
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{
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return Box;
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}
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//! renders the node.
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void Sky::render()
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{
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video::IVideoDriver* driver = SceneManager->getVideoDriver();
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scene::ICameraSceneNode* camera = SceneManager->getActiveCamera();
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if (!camera || !driver)
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return;
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ScopeProfiler sp(g_profiler, "Sky::render()", SPT_AVG);
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// draw perspective skybox
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core::matrix4 translate(AbsoluteTransformation);
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translate.setTranslation(camera->getAbsolutePosition());
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// Draw the sky box between the near and far clip plane
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const f32 viewDistance = (camera->getNearValue() + camera->getFarValue()) * 0.5f;
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core::matrix4 scale;
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scale.setScale(core::vector3df(viewDistance, viewDistance, viewDistance));
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driver->setTransform(video::ETS_WORLD, translate * scale);
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if(m_sunlight_seen)
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{
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float sunsize = 0.07;
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video::SColorf suncolor_f(1, 1, 0, 1);
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suncolor_f.r = 1;
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suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.7+m_time_brightness*(0.5)));
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suncolor_f.b = MYMAX(0.0, m_brightness*0.95);
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video::SColorf suncolor2_f(1, 1, 1, 1);
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suncolor_f.r = 1;
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suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.85+m_time_brightness*(0.5)));
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suncolor_f.b = MYMAX(0.0, m_brightness);
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float moonsize = 0.04;
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video::SColorf mooncolor_f(0.50, 0.57, 0.65, 1);
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video::SColorf mooncolor2_f(0.85, 0.875, 0.9, 1);
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float nightlength = 0.415;
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float wn = nightlength / 2;
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float wicked_time_of_day = 0;
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if(m_time_of_day > wn && m_time_of_day < 1.0 - wn)
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wicked_time_of_day = (m_time_of_day - wn)/(1.0-wn*2)*0.5 + 0.25;
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else if(m_time_of_day < 0.5)
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wicked_time_of_day = m_time_of_day / wn * 0.25;
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else
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wicked_time_of_day = 1.0 - ((1.0-m_time_of_day) / wn * 0.25);
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/*std::cerr<<"time_of_day="<<m_time_of_day<<" -> "
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<<"wicked_time_of_day="<<wicked_time_of_day<<std::endl;*/
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video::SColor suncolor = suncolor_f.toSColor();
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video::SColor suncolor2 = suncolor2_f.toSColor();
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video::SColor mooncolor = mooncolor_f.toSColor();
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video::SColor mooncolor2 = mooncolor2_f.toSColor();
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const f32 t = 1.0f;
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const f32 o = 0.0f;
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static const u16 indices[4] = {0,1,2,3};
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video::S3DVertex vertices[4];
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driver->setMaterial(m_materials[1]);
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//video::SColor cloudyfogcolor(255,255,255,255);
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video::SColor cloudyfogcolor = m_bgcolor;
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//video::SColor cloudyfogcolor = m_bgcolor.getInterpolated(m_skycolor, 0.5);
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// Draw far cloudy fog thing
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for(u32 j=0; j<4; j++)
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{
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video::SColor c = cloudyfogcolor.getInterpolated(m_skycolor, 0.45);
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vertices[0] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, t);
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vertices[1] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, t);
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vertices[2] = video::S3DVertex( 1, 0.12,-1, 0,0,1, c, o, o);
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vertices[3] = video::S3DVertex(-1, 0.12,-1, 0,0,1, c, t, o);
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for(u32 i=0; i<4; i++){
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if(j==0)
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// Don't switch
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{}
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else if(j==1)
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// Switch from -Z (south) to +X (east)
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vertices[i].Pos.rotateXZBy(90);
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else if(j==2)
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// Switch from -Z (south) to -X (west)
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vertices[i].Pos.rotateXZBy(-90);
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else
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// Switch from -Z (south) to -Z (north)
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vertices[i].Pos.rotateXZBy(-180);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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}
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for(u32 j=0; j<4; j++)
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{
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video::SColor c = cloudyfogcolor;
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vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
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vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
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vertices[2] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, o);
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vertices[3] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, o);
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for(u32 i=0; i<4; i++){
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if(j==0)
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// Don't switch
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{}
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else if(j==1)
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// Switch from -Z (south) to +X (east)
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vertices[i].Pos.rotateXZBy(90);
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else if(j==2)
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// Switch from -Z (south) to -X (west)
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vertices[i].Pos.rotateXZBy(-90);
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else
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// Switch from -Z (south) to -Z (north)
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vertices[i].Pos.rotateXZBy(-180);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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}
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driver->setMaterial(m_materials[2]);
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{
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float mid1 = 0.25;
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float mid = (wicked_time_of_day < 0.5 ? mid1 : (1.0 - mid1));
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float a_ = 1.0 - fabs(wicked_time_of_day - mid) * 35.0;
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float a = easeCurve(MYMAX(0, MYMIN(1, a_)));
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//std::cerr<<"a_="<<a_<<" a="<<a<<std::endl;
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video::SColor c(255,255,255,255);
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float y = -(1.0 - a) * 0.2;
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vertices[0] = video::S3DVertex(-1,-0.05+y,-1, 0,0,1, c, t, t);
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vertices[1] = video::S3DVertex( 1,-0.05+y,-1, 0,0,1, c, o, t);
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vertices[2] = video::S3DVertex( 1, 0.2+y,-1, 0,0,1, c, o, o);
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vertices[3] = video::S3DVertex(-1, 0.2+y,-1, 0,0,1, c, t, o);
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for(u32 i=0; i<4; i++){
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if(wicked_time_of_day < 0.5)
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// Switch from -Z (south) to +X (east)
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vertices[i].Pos.rotateXZBy(90);
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else
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// Switch from -Z (south) to -X (west)
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vertices[i].Pos.rotateXZBy(-90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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}
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driver->setMaterial(m_materials[1]);
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// Draw sun
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if(wicked_time_of_day > 0.15 && wicked_time_of_day < 0.85)
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{
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float d = sunsize * 1.7;
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video::SColor c = suncolor;
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c.setAlpha(0.05*255);
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vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
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vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
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vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
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vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
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for(u32 i=0; i<4; i++){
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// Switch from -Z (south) to +X (east)
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vertices[i].Pos.rotateXZBy(90);
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vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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d = sunsize * 1.2;
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c = suncolor;
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c.setAlpha(0.15*255);
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vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
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vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
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vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
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vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
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for(u32 i=0; i<4; i++){
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// Switch from -Z (south) to +X (east)
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vertices[i].Pos.rotateXZBy(90);
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vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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d = sunsize;
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vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor, t, t);
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vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor, o, t);
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vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor, o, o);
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vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor, t, o);
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for(u32 i=0; i<4; i++){
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// Switch from -Z (south) to +X (east)
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vertices[i].Pos.rotateXZBy(90);
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vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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d = sunsize * 0.7;
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vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor2, t, t);
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vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor2, o, t);
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vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor2, o, o);
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vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor2, t, o);
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for(u32 i=0; i<4; i++){
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// Switch from -Z (south) to +X (east)
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vertices[i].Pos.rotateXZBy(90);
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vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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}
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// Draw moon
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if(wicked_time_of_day < 0.3 || wicked_time_of_day > 0.7)
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{
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float d = moonsize * 1.9;
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video::SColor c = mooncolor;
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c.setAlpha(0.05*255);
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vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
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vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
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vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
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vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
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for(u32 i=0; i<4; i++){
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// Switch from -Z (south) to -X (west)
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vertices[i].Pos.rotateXZBy(-90);
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vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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d = moonsize * 1.3;
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c = mooncolor;
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c.setAlpha(0.15*255);
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vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
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vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
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vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
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vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
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for(u32 i=0; i<4; i++){
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// Switch from -Z (south) to -X (west)
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vertices[i].Pos.rotateXZBy(-90);
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vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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d = moonsize;
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vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor, t, t);
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vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, mooncolor, o, t);
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vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, mooncolor, o, o);
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vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, mooncolor, t, o);
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for(u32 i=0; i<4; i++){
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// Switch from -Z (south) to -X (west)
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vertices[i].Pos.rotateXZBy(-90);
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vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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float d2 = moonsize * 0.6;
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vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor2, t, t);
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vertices[1] = video::S3DVertex( d2,-d,-1, 0,0,1, mooncolor2, o, t);
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vertices[2] = video::S3DVertex( d2, d2,-1, 0,0,1, mooncolor2, o, o);
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vertices[3] = video::S3DVertex(-d, d2,-1, 0,0,1, mooncolor2, t, o);
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for(u32 i=0; i<4; i++){
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// Switch from -Z (south) to -X (west)
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vertices[i].Pos.rotateXZBy(-90);
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vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
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}
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driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
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}
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// Stars
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do{
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float starbrightness = MYMAX(0, MYMIN(1,
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(0.285 - fabs(wicked_time_of_day < 0.5 ?
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wicked_time_of_day : (1.0 - wicked_time_of_day))) * 10));
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float f = starbrightness;
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float d = 0.007;
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video::SColor starcolor(255, f*90,f*90,f*90);
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if(starcolor.getBlue() < m_skycolor.getBlue())
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break;
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u16 indices[SKY_STAR_COUNT*4];
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video::S3DVertex vertices[SKY_STAR_COUNT*4];
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for(u32 i=0; i<SKY_STAR_COUNT; i++){
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indices[i*4+0] = i*4+0;
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indices[i*4+1] = i*4+1;
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indices[i*4+2] = i*4+2;
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indices[i*4+3] = i*4+3;
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v3f p = m_stars[i];
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core::CMatrix4<f32> a;
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a.buildRotateFromTo(v3f(0,1,0), v3f(d,1+d/2,0));
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v3f p1 = p;
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a.rotateVect(p1);
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a.buildRotateFromTo(v3f(0,1,0), v3f(d,1,d));
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v3f p2 = p;
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a.rotateVect(p2);
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a.buildRotateFromTo(v3f(0,1,0), v3f(0,1-d/2,d));
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v3f p3 = p;
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a.rotateVect(p3);
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p.rotateXYBy(wicked_time_of_day * 360 - 90);
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p1.rotateXYBy(wicked_time_of_day * 360 - 90);
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p2.rotateXYBy(wicked_time_of_day * 360 - 90);
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p3.rotateXYBy(wicked_time_of_day * 360 - 90);
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vertices[i*4+0].Pos = p;
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vertices[i*4+0].Color = starcolor;
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vertices[i*4+1].Pos = p1;
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vertices[i*4+1].Color = starcolor;
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vertices[i*4+2].Pos = p2;
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vertices[i*4+2].Color = starcolor;
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vertices[i*4+3].Pos = p3;
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vertices[i*4+3].Color = starcolor;
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}
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driver->drawVertexPrimitiveList(vertices, SKY_STAR_COUNT*4,
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indices, SKY_STAR_COUNT, video::EVT_STANDARD,
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scene::EPT_QUADS, video::EIT_16BIT);
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}while(0);
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for(u32 j=0; j<2; j++)
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{
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//video::SColor c = m_skycolor;
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video::SColor c = cloudyfogcolor;
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vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
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vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
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|
vertices[2] = video::S3DVertex( 1,-0.02,-1, 0,0,1, c, o, o);
|
|
vertices[3] = video::S3DVertex(-1,-0.02,-1, 0,0,1, c, t, o);
|
|
for(u32 i=0; i<4; i++){
|
|
//if(wicked_time_of_day < 0.5)
|
|
if(j==0)
|
|
// Switch from -Z (south) to +X (east)
|
|
vertices[i].Pos.rotateXZBy(90);
|
|
else
|
|
// Switch from -Z (south) to -X (west)
|
|
vertices[i].Pos.rotateXZBy(-90);
|
|
}
|
|
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Sky::update(float time_of_day, float time_brightness,
|
|
float direct_brightness, bool sunlight_seen)
|
|
{
|
|
// Stabilize initial brightness and color values by flooding updates
|
|
if(m_first_update){
|
|
/*dstream<<"First update with time_of_day="<<time_of_day
|
|
<<" time_brightness="<<time_brightness
|
|
<<" direct_brightness="<<direct_brightness
|
|
<<" sunlight_seen="<<sunlight_seen<<std::endl;*/
|
|
m_first_update = false;
|
|
for(u32 i=0; i<100; i++){
|
|
update(time_of_day, time_brightness, direct_brightness,
|
|
sunlight_seen);
|
|
}
|
|
return;
|
|
}
|
|
|
|
m_time_of_day = time_of_day;
|
|
m_time_brightness = time_brightness;
|
|
m_sunlight_seen = sunlight_seen;
|
|
|
|
bool is_dawn = (time_brightness >= 0.20 && time_brightness < 0.35);
|
|
|
|
//video::SColorf bgcolor_bright_normal_f(170./255,200./255,230./255, 1.0);
|
|
video::SColorf bgcolor_bright_normal_f(155./255,193./255,240./255, 1.0);
|
|
video::SColorf bgcolor_bright_indoor_f(100./255,100./255,100./255, 1.0);
|
|
//video::SColorf bgcolor_bright_dawn_f(0.666,200./255*0.7,230./255*0.5,1.0);
|
|
//video::SColorf bgcolor_bright_dawn_f(0.666,0.549,0.220,1.0);
|
|
//video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.0, 1.0);
|
|
//video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.2,1.0);
|
|
video::SColorf bgcolor_bright_dawn_f
|
|
(155./255*1.2,193./255,240./255, 1.0);
|
|
|
|
video::SColorf skycolor_bright_normal_f =
|
|
video::SColor(255, 140, 186, 250);
|
|
video::SColorf skycolor_bright_dawn_f =
|
|
video::SColor(255, 180, 186, 250);
|
|
|
|
video::SColorf cloudcolor_bright_normal_f =
|
|
video::SColor(255, 240,240,255);
|
|
//video::SColorf cloudcolor_bright_dawn_f(1.0, 0.591, 0.4);
|
|
//video::SColorf cloudcolor_bright_dawn_f(1.0, 0.65, 0.44);
|
|
video::SColorf cloudcolor_bright_dawn_f(1.0, 0.7, 0.5);
|
|
|
|
if(sunlight_seen){
|
|
//m_brightness = m_brightness * 0.95 + direct_brightness * 0.05;
|
|
m_brightness = m_brightness * 0.95 + time_brightness * 0.05;
|
|
}
|
|
else{
|
|
if(direct_brightness < m_brightness)
|
|
m_brightness = m_brightness * 0.95 + direct_brightness * 0.05;
|
|
else
|
|
m_brightness = m_brightness * 0.98 + direct_brightness * 0.02;
|
|
}
|
|
|
|
m_clouds_visible = true;
|
|
float color_change_fraction = 0.98;
|
|
if(sunlight_seen){
|
|
if(is_dawn){
|
|
m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
|
|
bgcolor_bright_dawn_f, color_change_fraction);
|
|
m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
|
|
skycolor_bright_dawn_f, color_change_fraction);
|
|
m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
|
|
cloudcolor_bright_dawn_f, color_change_fraction);
|
|
} else {
|
|
m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
|
|
bgcolor_bright_normal_f, color_change_fraction);
|
|
m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
|
|
skycolor_bright_normal_f, color_change_fraction);
|
|
m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
|
|
cloudcolor_bright_normal_f, color_change_fraction);
|
|
}
|
|
} else {
|
|
m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
|
|
bgcolor_bright_indoor_f, color_change_fraction);
|
|
m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
|
|
cloudcolor_bright_normal_f, color_change_fraction);
|
|
m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
|
|
bgcolor_bright_indoor_f, color_change_fraction);
|
|
m_clouds_visible = false;
|
|
}
|
|
video::SColor bgcolor_bright = m_bgcolor_bright_f.toSColor();
|
|
m_bgcolor = video::SColor(
|
|
255,
|
|
bgcolor_bright.getRed() * m_brightness,
|
|
bgcolor_bright.getGreen() * m_brightness,
|
|
bgcolor_bright.getBlue() * m_brightness);
|
|
|
|
video::SColor skycolor_bright = m_skycolor_bright_f.toSColor();
|
|
m_skycolor = video::SColor(
|
|
255,
|
|
skycolor_bright.getRed() * m_brightness,
|
|
skycolor_bright.getGreen() * m_brightness,
|
|
skycolor_bright.getBlue() * m_brightness);
|
|
|
|
float cloud_direct_brightness = 0;
|
|
if(sunlight_seen){
|
|
cloud_direct_brightness = time_brightness;
|
|
if(time_brightness >= 0.2 && time_brightness < 0.7)
|
|
cloud_direct_brightness *= 1.3;
|
|
} else {
|
|
cloud_direct_brightness = direct_brightness;
|
|
}
|
|
m_cloud_brightness = m_cloud_brightness * 0.95 +
|
|
cloud_direct_brightness * (1.0 - 0.95);
|
|
m_cloudcolor_f = video::SColorf(
|
|
m_cloudcolor_bright_f.getRed() * m_cloud_brightness,
|
|
m_cloudcolor_bright_f.getGreen() * m_cloud_brightness,
|
|
m_cloudcolor_bright_f.getBlue() * m_cloud_brightness,
|
|
1.0);
|
|
|
|
}
|
|
|
|
|