diff options
Diffstat (limited to 'src/sky.cpp')
-rw-r--r-- | src/sky.cpp | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/src/sky.cpp b/src/sky.cpp new file mode 100644 index 000000000..ba9b17493 --- /dev/null +++ b/src/sky.cpp @@ -0,0 +1,446 @@ +#include "sky.h" +#include "IVideoDriver.h" +#include "ISceneManager.h" +#include "ICameraSceneNode.h" +#include "S3DVertex.h" +#include "utility.h" // MYMIN +#include "tile.h" // getTexturePath +#include "noise.h" // easeCurve +#include "main.h" // g_profiler +#include "profiler.h" + +//! constructor +Sky::Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id): + scene::ISceneNode(parent, mgr, id), + m_first_update(true), + m_brightness(0.5), + m_cloud_brightness(0.5), + m_bgcolor_bright_f(1,1,1,1), + m_skycolor_bright_f(1,1,1,1), + m_cloudcolor_bright_f(1,1,1,1) +{ + setAutomaticCulling(scene::EAC_OFF); + Box.MaxEdge.set(0,0,0); + Box.MinEdge.set(0,0,0); + + // create material + + video::SMaterial mat; + mat.Lighting = false; + mat.ZBuffer = video::ECFN_NEVER; + mat.ZWriteEnable = false; + mat.AntiAliasing=0; + mat.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE; + mat.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE; + mat.BackfaceCulling = false; + + m_materials[0] = mat; + + m_materials[1] = mat; + //m_materials[1].MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA; + m_materials[1].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL; + + m_materials[2] = mat; + m_materials[2].setTexture(0, mgr->getVideoDriver()->getTexture( + getTexturePath("sunrisebg.png").c_str())); + m_materials[2].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL; + //m_materials[2].MaterialType = video::EMT_TRANSPARENT_ADD_COLOR; + + for(u32 i=0; i<SKY_STAR_COUNT; i++){ + m_stars[i] = v3f( + myrand_range(-10000,10000), + myrand_range(-10000,10000), + myrand_range(-10000,10000) + ); + m_stars[i].normalize(); + } +} + +void Sky::OnRegisterSceneNode() +{ + if (IsVisible) + SceneManager->registerNodeForRendering(this, scene::ESNRP_SKY_BOX); + + scene::ISceneNode::OnRegisterSceneNode(); +} + +const core::aabbox3d<f32>& Sky::getBoundingBox() const +{ + return Box; +} + +//! renders the node. +void Sky::render() +{ + video::IVideoDriver* driver = SceneManager->getVideoDriver(); + scene::ICameraSceneNode* camera = SceneManager->getActiveCamera(); + + if (!camera || !driver) + return; + + ScopeProfiler sp(g_profiler, "Sky::render()", SPT_AVG); + + // draw perspective skybox + + core::matrix4 translate(AbsoluteTransformation); + translate.setTranslation(camera->getAbsolutePosition()); + + // Draw the sky box between the near and far clip plane + const f32 viewDistance = (camera->getNearValue() + camera->getFarValue()) * 0.5f; + core::matrix4 scale; + scale.setScale(core::vector3df(viewDistance, viewDistance, viewDistance)); + + driver->setTransform(video::ETS_WORLD, translate * scale); + + if(m_sunlight_seen) + { + float sunsize = 0.07; + video::SColorf suncolor_f(1, 1, 0, 1); + suncolor_f.r = 1; + suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.7+m_time_brightness*(0.5))); + suncolor_f.b = MYMAX(0.0, m_brightness*0.95); + video::SColorf suncolor2_f(1, 1, 1, 1); + suncolor_f.r = 1; + suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.85+m_time_brightness*(0.5))); + suncolor_f.b = MYMAX(0.0, m_brightness); + + float moonsize = 0.04; + video::SColorf mooncolor_f(0.50, 0.57, 0.65, 1); + video::SColorf mooncolor2_f(0.85, 0.875, 0.9, 1); + + float nightlength = 0.41; + float wn = nightlength / 2; + float wicked_time_of_day = 0; + if(m_time_of_day > wn && m_time_of_day < 1.0 - wn) + wicked_time_of_day = (m_time_of_day - wn)/(1.0-wn*2)*0.5 + 0.25; + else if(m_time_of_day < 0.5) + wicked_time_of_day = m_time_of_day / wn * 0.25; + else + wicked_time_of_day = 1.0 - ((1.0-m_time_of_day) / wn * 0.25); + /*std::cerr<<"time_of_day="<<m_time_of_day<<" -> " + <<"wicked_time_of_day="<<wicked_time_of_day<<std::endl;*/ + + video::SColor suncolor = suncolor_f.toSColor(); + video::SColor suncolor2 = suncolor2_f.toSColor(); + video::SColor mooncolor = mooncolor_f.toSColor(); + video::SColor mooncolor2 = mooncolor2_f.toSColor(); + + const f32 t = 1.0f; + const f32 o = 0.0f; + static const u16 indices[4] = {0,1,2,3}; + video::S3DVertex vertices[4]; + + driver->setMaterial(m_materials[2]); + { + float mid1 = 0.25; + float mid = (wicked_time_of_day < 0.5 ? mid1 : (1.0 - mid1)); + float a_ = 1.0 - fabs(wicked_time_of_day - mid) * 35.0; + float a = easeCurve(MYMAX(0, MYMIN(1, a_))); + //std::cerr<<"a_="<<a_<<" a="<<a<<std::endl; + video::SColor c(255,255,255,255); + float y = -(1.0 - a) * 0.2; + vertices[0] = video::S3DVertex(-1,-0.05+y,-1, 0,0,1, c, t, t); + vertices[1] = video::S3DVertex( 1,-0.05+y,-1, 0,0,1, c, o, t); + vertices[2] = video::S3DVertex( 1, 0.2+y,-1, 0,0,1, c, o, o); + vertices[3] = video::S3DVertex(-1, 0.2+y,-1, 0,0,1, c, t, o); + for(u32 i=0; i<4; i++){ + if(wicked_time_of_day < 0.5) + // 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); + } + + driver->setMaterial(m_materials[1]); + + // Draw sun + if(wicked_time_of_day > 0.15 && wicked_time_of_day < 0.85) + { + float d = sunsize * 1.7; + video::SColor c = suncolor; + c.setAlpha(0.05*255); + vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t); + vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t); + vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o); + vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o); + for(u32 i=0; i<4; i++){ + // Switch from -Z (south) to +X (east) + vertices[i].Pos.rotateXZBy(90); + vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90); + } + driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2); + + d = sunsize * 1.2; + c = suncolor; + c.setAlpha(0.15*255); + vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t); + vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t); + vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o); + vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o); + for(u32 i=0; i<4; i++){ + // Switch from -Z (south) to +X (east) + vertices[i].Pos.rotateXZBy(90); + vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90); + } + driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2); + + d = sunsize; + vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor, t, t); + vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor, o, t); + vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor, o, o); + vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor, t, o); + for(u32 i=0; i<4; i++){ + // Switch from -Z (south) to +X (east) + vertices[i].Pos.rotateXZBy(90); + vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90); + } + driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2); + + d = sunsize * 0.7; + vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor2, t, t); + vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor2, o, t); + vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor2, o, o); + vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor2, t, o); + for(u32 i=0; i<4; i++){ + // Switch from -Z (south) to +X (east) + vertices[i].Pos.rotateXZBy(90); + vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90); + } + driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2); + } + // Draw moon + if(wicked_time_of_day < 0.3 || wicked_time_of_day > 0.7) + { + float d = moonsize * 1.9; + video::SColor c = mooncolor; + c.setAlpha(0.05*255); + vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t); + vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t); + vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o); + vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o); + for(u32 i=0; i<4; i++){ + // Switch from -Z (south) to -X (west) + vertices[i].Pos.rotateXZBy(-90); + vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90); + } + driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2); + + d = moonsize * 1.3; + c = mooncolor; + c.setAlpha(0.15*255); + vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t); + vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t); + vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o); + vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o); + for(u32 i=0; i<4; i++){ + // Switch from -Z (south) to -X (west) + vertices[i].Pos.rotateXZBy(-90); + vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90); + } + driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2); + + d = moonsize; + vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor, t, t); + vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, mooncolor, o, t); + vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, mooncolor, o, o); + vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, mooncolor, t, o); + for(u32 i=0; i<4; i++){ + // Switch from -Z (south) to -X (west) + vertices[i].Pos.rotateXZBy(-90); + vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90); + } + driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2); + + float d2 = moonsize * 0.6; + vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor2, t, t); + vertices[1] = video::S3DVertex( d2,-d,-1, 0,0,1, mooncolor2, o, t); + vertices[2] = video::S3DVertex( d2, d2,-1, 0,0,1, mooncolor2, o, o); + vertices[3] = video::S3DVertex(-d, d2,-1, 0,0,1, mooncolor2, t, o); + for(u32 i=0; i<4; i++){ + // Switch from -Z (south) to -X (west) + vertices[i].Pos.rotateXZBy(-90); + vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90); + } + driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2); + } + // Stars + do{ + float starbrightness = MYMAX(0, MYMIN(1, + (0.285 - fabs(wicked_time_of_day < 0.5 ? + wicked_time_of_day : (1.0 - wicked_time_of_day))) * 10)); + float f = starbrightness; + video::SColor starcolor(255, f*120,f*120,f*120); + if(starcolor.getBlue() < m_skycolor.getBlue()) + break; + u16 indices[SKY_STAR_COUNT*4]; + video::S3DVertex vertices[SKY_STAR_COUNT*4]; + for(u32 i=0; i<SKY_STAR_COUNT; i++){ + indices[i*4+0] = i*4+0; + indices[i*4+1] = i*4+1; + indices[i*4+2] = i*4+2; + indices[i*4+3] = i*4+3; + v3f p = m_stars[i]; + core::CMatrix4<f32> a; + float d = 0.005; + a.buildRotateFromTo(v3f(0,1,0), v3f(d,1,0)); + v3f p1 = p; + a.rotateVect(p1); + a.buildRotateFromTo(v3f(0,1,0), v3f(d,1+d/2,d)); + v3f p2 = p; + a.rotateVect(p2); + a.buildRotateFromTo(v3f(0,1,0), v3f(0,1,d)); + v3f p3 = p; + a.rotateVect(p3); + p.rotateXYBy(wicked_time_of_day * 360 - 90); + p1.rotateXYBy(wicked_time_of_day * 360 - 90); + p2.rotateXYBy(wicked_time_of_day * 360 - 90); + p3.rotateXYBy(wicked_time_of_day * 360 - 90); + vertices[i*4+0].Pos = p; + vertices[i*4+0].Color = starcolor; + vertices[i*4+1].Pos = p1; + vertices[i*4+1].Color = starcolor; + vertices[i*4+2].Pos = p2; + vertices[i*4+2].Color = starcolor; + vertices[i*4+3].Pos = p3; + vertices[i*4+3].Color = starcolor; + } + driver->drawVertexPrimitiveList(vertices, SKY_STAR_COUNT*4, + indices, SKY_STAR_COUNT, video::EVT_STANDARD, + scene::EPT_QUADS, video::EIT_16BIT); + }while(0); + + for(u32 j=0; j<2; j++) + { + vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, m_skycolor, t, t); + vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, m_skycolor, o, t); + vertices[2] = video::S3DVertex( 1,-0.02,-1, 0,0,1, m_skycolor, o, o); + vertices[3] = video::S3DVertex(-1,-0.02,-1, 0,0,1, m_skycolor, 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 < 0.50); + + video::SColorf bgcolor_bright_normal_f(170./255,200./255,230./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 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); + +} + + |