src/sky.cpp

   1 #include "sky.h"
   2 #include "IVideoDriver.h"
   3 #include "ISceneManager.h"
   4 #include "ICameraSceneNode.h"
   5 #include "S3DVertex.h"
   6 #include "tile.h"
   7 #include "noise.h" // easeCurve
   8 #include "main.h" // g_profiler
   9 #include "profiler.h"
  10 #include "util/numeric.h" // MYMIN
  11 #include <cmath>
  12 #include "settings.h"
  13 #include "camera.h" // CameraModes
  14
  15 //! constructor
  16 Sky::Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id,
  17                 ITextureSource *tsrc):
  18                 scene::ISceneNode(parent, mgr, id),
  19                 m_visible(true),
  20                 m_fallback_bg_color(255,255,255,255),
  21                 m_first_update(true),
  22                 m_brightness(0.5),
  23                 m_cloud_brightness(0.5),
  24                 m_bgcolor_bright_f(1,1,1,1),
  25                 m_skycolor_bright_f(1,1,1,1),
  26                 m_cloudcolor_bright_f(1,1,1,1)
  27 {
  28         setAutomaticCulling(scene::EAC_OFF);
  29         Box.MaxEdge.set(0,0,0);
  30         Box.MinEdge.set(0,0,0);
  31
  32         // create material
  33
  34         video::SMaterial mat;
  35         mat.Lighting = false;
  36         mat.ZBuffer = video::ECFN_NEVER;
  37         mat.ZWriteEnable = false;
  38         mat.AntiAliasing=0;
  39         mat.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
  40         mat.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
  41         mat.BackfaceCulling = false;
  42
  43         m_materials[0] = mat;
  44
  45         m_materials[1] = mat;
  46         //m_materials[1].MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
  47         m_materials[1].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  48
  49         m_materials[2] = mat;
  50         m_materials[2].setTexture(0, tsrc->getTexture("sunrisebg.png"));
  51         m_materials[2].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  52         //m_materials[2].MaterialType = video::EMT_TRANSPARENT_ADD_COLOR;
  53
  54         m_sun_texture = tsrc->isKnownSourceImage("sun.png") ?
  55                 tsrc->getTexture("sun.png") : NULL;
  56         m_moon_texture = tsrc->isKnownSourceImage("moon.png") ?
  57                 tsrc->getTexture("moon.png") : NULL;
  58         m_sun_tonemap = tsrc->isKnownSourceImage("sun_tonemap.png") ?
  59                 tsrc->getTexture("sun_tonemap.png") : NULL;
  60         m_moon_tonemap = tsrc->isKnownSourceImage("moon_tonemap.png") ?
  61                 tsrc->getTexture("moon_tonemap.png") : NULL;
  62
  63         if (m_sun_texture){
  64                 m_materials[3] = mat;
  65                 m_materials[3].setTexture(0, m_sun_texture);
  66                 m_materials[3].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  67                 if (m_sun_tonemap)
  68                         m_materials[3].Lighting = true;
  69         }
  70         if (m_moon_texture){
  71                 m_materials[4] = mat;
  72                 m_materials[4].setTexture(0, m_moon_texture);
  73                 m_materials[4].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  74                 if (m_moon_tonemap)
  75                         m_materials[4].Lighting = true;
  76         }
  77
  78         for(u32 i=0; i<SKY_STAR_COUNT; i++){
  79                 m_stars[i] = v3f(
  80                         myrand_range(-10000,10000),
  81                         myrand_range(-10000,10000),
  82                         myrand_range(-10000,10000)
  83                 );
  84                 m_stars[i].normalize();
  85         }
  86
  87         m_directional_colored_fog = g_settings->getBool("directional_colored_fog");
  88 }
  89
  90 void Sky::OnRegisterSceneNode()
  91 {
  92         if (IsVisible)
  93                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SKY_BOX);
  94
  95         scene::ISceneNode::OnRegisterSceneNode();
  96 }
  97
  98 const core::aabbox3d<f32>& Sky::getBoundingBox() const
  99 {
 100         return Box;
 101 }
 102
 103 //! renders the node.
 104 void Sky::render()
 105 {
 106         if(!m_visible)
 107                 return;
 108
 109         video::IVideoDriver* driver = SceneManager->getVideoDriver();
 110         scene::ICameraSceneNode* camera = SceneManager->getActiveCamera();
 111
 112         if (!camera || !driver)
 113                 return;
 114
 115         ScopeProfiler sp(g_profiler, "Sky::render()", SPT_AVG);
 116
 117         // draw perspective skybox
 118
 119         core::matrix4 translate(AbsoluteTransformation);
 120         translate.setTranslation(camera->getAbsolutePosition());
 121
 122         // Draw the sky box between the near and far clip plane
 123         const f32 viewDistance = (camera->getNearValue() + camera->getFarValue()) * 0.5f;
 124         core::matrix4 scale;
 125         scale.setScale(core::vector3df(viewDistance, viewDistance, viewDistance));
 126
 127         driver->setTransform(video::ETS_WORLD, translate * scale);
 128
 129         if(m_sunlight_seen)
 130         {
 131                 float sunsize = 0.07;
 132                 video::SColorf suncolor_f(1, 1, 0, 1);
 133                 suncolor_f.r = 1;
 134                 suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.7+m_time_brightness*(0.5)));
 135                 suncolor_f.b = MYMAX(0.0, m_brightness*0.95);
 136                 video::SColorf suncolor2_f(1, 1, 1, 1);
 137                 suncolor_f.r = 1;
 138                 suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.85+m_time_brightness*(0.5)));
 139                 suncolor_f.b = MYMAX(0.0, m_brightness);
 140
 141                 float moonsize = 0.04;
 142                 video::SColorf mooncolor_f(0.50, 0.57, 0.65, 1);
 143                 video::SColorf mooncolor2_f(0.85, 0.875, 0.9, 1);
 144
 145                 float nightlength = 0.415;
 146                 float wn = nightlength / 2;
 147                 float wicked_time_of_day = 0;
 148                 if(m_time_of_day > wn && m_time_of_day < 1.0 - wn)
 149                         wicked_time_of_day = (m_time_of_day - wn)/(1.0-wn*2)*0.5 + 0.25;
 150                 else if(m_time_of_day < 0.5)
 151                         wicked_time_of_day = m_time_of_day / wn * 0.25;
 152                 else
 153                         wicked_time_of_day = 1.0 - ((1.0-m_time_of_day) / wn * 0.25);
 154                 /*std::cerr<<"time_of_day="<<m_time_of_day<<" -> "
 155                                 <<"wicked_time_of_day="<<wicked_time_of_day<<std::endl;*/
 156
 157                 video::SColor suncolor = suncolor_f.toSColor();
 158                 video::SColor suncolor2 = suncolor2_f.toSColor();
 159                 video::SColor mooncolor = mooncolor_f.toSColor();
 160                 video::SColor mooncolor2 = mooncolor2_f.toSColor();
 161
 162                 // Calculate offset normalized to the X dimension of a 512x1 px tonemap
 163                 float offset=(1.0-fabs(sin((m_time_of_day - 0.5)*irr::core::PI)))*511;
 164
 165                 if (m_sun_tonemap){
 166                         u8 * texels = (u8 *)m_sun_tonemap->lock();
 167                         video::SColor* texel = (video::SColor *)(texels + (u32)offset * 4);
 168                         video::SColor texel_color (255,texel->getRed(),texel->getGreen(), texel->getBlue());
 169                         m_sun_tonemap->unlock();
 170                         m_materials[3].EmissiveColor = texel_color;
 171                 }
 172                 if (m_moon_tonemap){
 173                         u8 * texels = (u8 *)m_moon_tonemap->lock();
 174                         video::SColor* texel = (video::SColor *)(texels + (u32)offset * 4);
 175                         video::SColor texel_color (255,texel->getRed(),texel->getGreen(), texel->getBlue());
 176                         m_moon_tonemap->unlock();
 177                         m_materials[4].EmissiveColor = texel_color;
 178                 }
 179
 180                 const f32 t = 1.0f;
 181                 const f32 o = 0.0f;
 182                 static const u16 indices[4] = {0,1,2,3};
 183                 video::S3DVertex vertices[4];
 184
 185                 driver->setMaterial(m_materials[1]);
 186
 187                 //video::SColor cloudyfogcolor(255,255,255,255);
 188                 video::SColor cloudyfogcolor = m_bgcolor;
 189                 //video::SColor cloudyfogcolor = m_bgcolor.getInterpolated(m_skycolor, 0.5);
 190
 191                 // Draw far cloudy fog thing
 192                 for(u32 j=0; j<4; j++)
 193                 {
 194                         video::SColor c = cloudyfogcolor.getInterpolated(m_skycolor, 0.45);
 195                         vertices[0] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, t);
 196                         vertices[1] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, t);
 197                         vertices[2] = video::S3DVertex( 1, 0.12,-1, 0,0,1, c, o, o);
 198                         vertices[3] = video::S3DVertex(-1, 0.12,-1, 0,0,1, c, t, o);
 199                         for(u32 i=0; i<4; i++){
 200                                 if(j==0)
 201                                         // Don't switch
 202                                         {}
 203                                 else if(j==1)
 204                                         // Switch from -Z (south) to +X (east)
 205                                         vertices[i].Pos.rotateXZBy(90);
 206                                 else if(j==2)
 207                                         // Switch from -Z (south) to -X (west)
 208                                         vertices[i].Pos.rotateXZBy(-90);
 209                                 else
 210                                         // Switch from -Z (south) to -Z (north)
 211                                         vertices[i].Pos.rotateXZBy(-180);
 212                         }
 213                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 214                 }
 215                 for(u32 j=0; j<4; j++)
 216                 {
 217                         video::SColor c = cloudyfogcolor;
 218                         vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
 219                         vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
 220                         vertices[2] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, o);
 221                         vertices[3] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, o);
 222                         for(u32 i=0; i<4; i++){
 223                                 if(j==0)
 224                                         // Don't switch
 225                                         {}
 226                                 else if(j==1)
 227                                         // Switch from -Z (south) to +X (east)
 228                                         vertices[i].Pos.rotateXZBy(90);
 229                                 else if(j==2)
 230                                         // Switch from -Z (south) to -X (west)
 231                                         vertices[i].Pos.rotateXZBy(-90);
 232                                 else
 233                                         // Switch from -Z (south) to -Z (north)
 234                                         vertices[i].Pos.rotateXZBy(-180);
 235                         }
 236                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 237                 }
 238
 239                 driver->setMaterial(m_materials[2]);
 240
 241                 {
 242                         float mid1 = 0.25;
 243                         float mid = (wicked_time_of_day < 0.5 ? mid1 : (1.0 - mid1));
 244                         float a_ = 1.0 - fabs(wicked_time_of_day - mid) * 35.0;
 245                         float a = easeCurve(MYMAX(0, MYMIN(1, a_)));
 246                         //std::cerr<<"a_="<<a_<<" a="<<a<<std::endl;
 247                         video::SColor c(255,255,255,255);
 248                         float y = -(1.0 - a) * 0.2;
 249                         vertices[0] = video::S3DVertex(-1,-0.05+y,-1, 0,0,1, c, t, t);
 250                         vertices[1] = video::S3DVertex( 1,-0.05+y,-1, 0,0,1, c, o, t);
 251                         vertices[2] = video::S3DVertex( 1, 0.2+y,-1, 0,0,1, c, o, o);
 252                         vertices[3] = video::S3DVertex(-1, 0.2+y,-1, 0,0,1, c, t, o);
 253                         for(u32 i=0; i<4; i++){
 254                                 if(wicked_time_of_day < 0.5)
 255                                         // Switch from -Z (south) to +X (east)
 256                                         vertices[i].Pos.rotateXZBy(90);
 257                                 else
 258                                         // Switch from -Z (south) to -X (west)
 259                                         vertices[i].Pos.rotateXZBy(-90);
 260                         }
 261                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 262                 }
 263
 264                 // Draw sun
 265                 if(wicked_time_of_day > 0.15 && wicked_time_of_day < 0.85){
 266                         if (!m_sun_texture){
 267                                 driver->setMaterial(m_materials[1]);
 268                                 float d = sunsize * 1.7;
 269                                 video::SColor c = suncolor;
 270                                 c.setAlpha(0.05*255);
 271                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 272                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 273                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 274                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 275                                 for(u32 i=0; i<4; i++){
 276                                         // Switch from -Z (south) to +X (east)
 277                                         vertices[i].Pos.rotateXZBy(90);
 278                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 279                                 }
 280                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 281
 282                                 d = sunsize * 1.2;
 283                                 c = suncolor;
 284                                 c.setAlpha(0.15*255);
 285                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 286                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 287                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 288                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 289                                 for(u32 i=0; i<4; i++){
 290                                         // Switch from -Z (south) to +X (east)
 291                                         vertices[i].Pos.rotateXZBy(90);
 292                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 293                                 }
 294                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 295
 296                                 d = sunsize;
 297                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor, t, t);
 298                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor, o, t);
 299                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor, o, o);
 300                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor, t, o);
 301                                 for(u32 i=0; i<4; i++){
 302                                         // Switch from -Z (south) to +X (east)
 303                                         vertices[i].Pos.rotateXZBy(90);
 304                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 305                                 }
 306                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 307
 308                                 d = sunsize * 0.7;
 309                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor2, t, t);
 310                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor2, o, t);
 311                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor2, o, o);
 312                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor2, t, o);
 313                                 for(u32 i=0; i<4; i++){
 314                                         // Switch from -Z (south) to +X (east)
 315                                         vertices[i].Pos.rotateXZBy(90);
 316                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 317                                 }
 318                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 319                         } else {
 320                                 driver->setMaterial(m_materials[3]);
 321                                 float d = sunsize * 1.7;
 322                                 video::SColor c;
 323                                 if (m_sun_tonemap)
 324                                         c = video::SColor (0,0,0,0);
 325                                 else
 326                                         c = video::SColor (255,255,255,255);
 327                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 328                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 329                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 330                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 331                                 for(u32 i=0; i<4; i++){
 332                                         // Switch from -Z (south) to +X (east)
 333                                         vertices[i].Pos.rotateXZBy(90);
 334                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 335                                 }
 336                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 337                         }
 338                 }
 339
 340                 // Draw moon
 341                 if(wicked_time_of_day < 0.3 || wicked_time_of_day > 0.7)
 342                 {
 343                         if (!m_moon_texture){
 344                                 driver->setMaterial(m_materials[1]);
 345                                 float d = moonsize * 1.9;
 346                                 video::SColor c = mooncolor;
 347                                 c.setAlpha(0.05*255);
 348                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 349                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 350                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 351                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 352                                 for(u32 i=0; i<4; i++){
 353                                         // Switch from -Z (south) to -X (west)
 354                                         vertices[i].Pos.rotateXZBy(-90);
 355                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 356                                 }
 357                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 358
 359                                 d = moonsize * 1.3;
 360                                 c = mooncolor;
 361                                 c.setAlpha(0.15*255);
 362                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 363                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 364                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 365                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 366                                 for(u32 i=0; i<4; i++){
 367                                         // Switch from -Z (south) to -X (west)
 368                                         vertices[i].Pos.rotateXZBy(-90);
 369                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 370                                 }
 371                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 372
 373                                 d = moonsize;
 374                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor, t, t);
 375                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, mooncolor, o, t);
 376                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, mooncolor, o, o);
 377                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, mooncolor, t, o);
 378                                 for(u32 i=0; i<4; i++){
 379                                         // Switch from -Z (south) to -X (west)
 380                                         vertices[i].Pos.rotateXZBy(-90);
 381                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 382                                 }
 383                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 384
 385                                 float d2 = moonsize * 0.6;
 386                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor2, t, t);
 387                                 vertices[1] = video::S3DVertex( d2,-d,-1, 0,0,1, mooncolor2, o, t);
 388                                 vertices[2] = video::S3DVertex( d2, d2,-1, 0,0,1, mooncolor2, o, o);
 389                                 vertices[3] = video::S3DVertex(-d, d2,-1, 0,0,1, mooncolor2, t, o);
 390                                 for(u32 i=0; i<4; i++){
 391                                         // Switch from -Z (south) to -X (west)
 392                                         vertices[i].Pos.rotateXZBy(-90);
 393                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 394                                 }
 395                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 396                         } else {
 397                                 driver->setMaterial(m_materials[4]);
 398                                 float d = moonsize * 1.9;
 399                                 video::SColor c;
 400                                 if (m_moon_tonemap)
 401                                         c = video::SColor (0,0,0,0);
 402                                 else
 403                                         c = video::SColor (255,255,255,255);
 404                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 405                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 406                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 407                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 408                                 for(u32 i=0; i<4; i++){
 409                                         // Switch from -Z (south) to -X (west)
 410                                         vertices[i].Pos.rotateXZBy(-90);
 411                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 412                                 }
 413                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 414                         }
 415                 }
 416
 417                 // Stars
 418                 driver->setMaterial(m_materials[1]);
 419                 do{
 420                         float starbrightness = MYMAX(0, MYMIN(1,
 421                                         (0.285 - fabs(wicked_time_of_day < 0.5 ?
 422                                         wicked_time_of_day : (1.0 - wicked_time_of_day))) * 10));
 423                         float f = starbrightness;
 424                         float d = 0.007;
 425                         video::SColor starcolor(255, f*90,f*90,f*90);
 426                         if(starcolor.getBlue() < m_skycolor.getBlue())
 427                                 break;
 428                         u16 indices[SKY_STAR_COUNT*4];
 429                         video::S3DVertex vertices[SKY_STAR_COUNT*4];
 430                         for(u32 i=0; i<SKY_STAR_COUNT; i++){
 431                                 indices[i*4+0] = i*4+0;
 432                                 indices[i*4+1] = i*4+1;
 433                                 indices[i*4+2] = i*4+2;
 434                                 indices[i*4+3] = i*4+3;
 435                                 v3f p = m_stars[i];
 436                                 core::CMatrix4<f32> a;
 437                                 a.buildRotateFromTo(v3f(0,1,0), v3f(d,1+d/2,0));
 438                                 v3f p1 = p;
 439                                 a.rotateVect(p1);
 440                                 a.buildRotateFromTo(v3f(0,1,0), v3f(d,1,d));
 441                                 v3f p2 = p;
 442                                 a.rotateVect(p2);
 443                                 a.buildRotateFromTo(v3f(0,1,0), v3f(0,1-d/2,d));
 444                                 v3f p3 = p;
 445                                 a.rotateVect(p3);
 446                                 p.rotateXYBy(wicked_time_of_day * 360 - 90);
 447                                 p1.rotateXYBy(wicked_time_of_day * 360 - 90);
 448                                 p2.rotateXYBy(wicked_time_of_day * 360 - 90);
 449                                 p3.rotateXYBy(wicked_time_of_day * 360 - 90);
 450                                 vertices[i*4+0].Pos = p;
 451                                 vertices[i*4+0].Color = starcolor;
 452                                 vertices[i*4+1].Pos = p1;
 453                                 vertices[i*4+1].Color = starcolor;
 454                                 vertices[i*4+2].Pos = p2;
 455                                 vertices[i*4+2].Color = starcolor;
 456                                 vertices[i*4+3].Pos = p3;
 457                                 vertices[i*4+3].Color = starcolor;
 458                         }
 459                         driver->drawVertexPrimitiveList(vertices, SKY_STAR_COUNT*4,
 460                                         indices, SKY_STAR_COUNT, video::EVT_STANDARD,
 461                                         scene::EPT_QUADS, video::EIT_16BIT);
 462                 }while(0);
 463
 464                 for(u32 j=0; j<2; j++)
 465                 {
 466                         //video::SColor c = m_skycolor;
 467                         video::SColor c = cloudyfogcolor;
 468                         vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
 469                         vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
 470                         vertices[2] = video::S3DVertex( 1,-0.02,-1, 0,0,1, c, o, o);
 471                         vertices[3] = video::S3DVertex(-1,-0.02,-1, 0,0,1, c, t, o);
 472                         for(u32 i=0; i<4; i++){
 473                                 //if(wicked_time_of_day < 0.5)
 474                                 if(j==0)
 475                                         // Switch from -Z (south) to +X (east)
 476                                         vertices[i].Pos.rotateXZBy(90);
 477                                 else
 478                                         // Switch from -Z (south) to -X (west)
 479                                         vertices[i].Pos.rotateXZBy(-90);
 480                         }
 481                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 482                 }
 483         }
 484 }
 485
 486 void Sky::update(float time_of_day, float time_brightness,
 487                 float direct_brightness, bool sunlight_seen,
 488                 CameraMode cam_mode, float yaw, float pitch)
 489 {
 490         // Stabilize initial brightness and color values by flooding updates
 491         if(m_first_update){
 492                 /*dstream<<"First update with time_of_day="<<time_of_day
 493                                 <<" time_brightness="<<time_brightness
 494                                 <<" direct_brightness="<<direct_brightness
 495                                 <<" sunlight_seen="<<sunlight_seen<<std::endl;*/
 496                 m_first_update = false;
 497                 for(u32 i=0; i<100; i++){
 498                         update(time_of_day, time_brightness, direct_brightness,
 499                                         sunlight_seen, cam_mode, yaw, pitch);
 500                 }
 501                 return;
 502         }
 503
 504         m_time_of_day = time_of_day;
 505         m_time_brightness = time_brightness;
 506         m_sunlight_seen = sunlight_seen;
 507
 508         bool is_dawn = (time_brightness >= 0.20 && time_brightness < 0.35);
 509
 510         //video::SColorf bgcolor_bright_normal_f(170./255,200./255,230./255, 1.0);
 511         video::SColorf bgcolor_bright_normal_f(155./255,193./255,240./255, 1.0);
 512         video::SColorf bgcolor_bright_indoor_f(100./255,100./255,100./255, 1.0);
 513         //video::SColorf bgcolor_bright_dawn_f(0.666,200./255*0.7,230./255*0.5,1.0);
 514         //video::SColorf bgcolor_bright_dawn_f(0.666,0.549,0.220,1.0);
 515         //video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.0, 1.0);
 516         //video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.2,1.0);
 517         video::SColorf bgcolor_bright_dawn_f
 518                         (155./255*1.2,193./255,240./255, 1.0);
 519
 520         video::SColorf skycolor_bright_normal_f =
 521                         video::SColor(255, 140, 186, 250);
 522         video::SColorf skycolor_bright_dawn_f =
 523                         video::SColor(255, 180, 186, 250);
 524
 525         video::SColorf cloudcolor_bright_normal_f =
 526                         video::SColor(255, 240,240,255);
 527         //video::SColorf cloudcolor_bright_dawn_f(1.0, 0.591, 0.4);
 528         //video::SColorf cloudcolor_bright_dawn_f(1.0, 0.65, 0.44);
 529         //video::SColorf cloudcolor_bright_dawn_f(1.0, 0.7, 0.5);
 530         video::SColorf cloudcolor_bright_dawn_f(1.0, 0.875, 0.75);
 531
 532         float cloud_color_change_fraction = 0.95;
 533         if(sunlight_seen){
 534                 if(fabs(time_brightness - m_brightness) < 0.2){
 535                         m_brightness = m_brightness * 0.95 + time_brightness * 0.05;
 536                 } else {
 537                         m_brightness = m_brightness * 0.80 + time_brightness * 0.20;
 538                         cloud_color_change_fraction = 0.0;
 539                 }
 540         }
 541         else{
 542                 if(direct_brightness < m_brightness)
 543                         m_brightness = m_brightness * 0.95 + direct_brightness * 0.05;
 544                 else
 545                         m_brightness = m_brightness * 0.98 + direct_brightness * 0.02;
 546         }
 547
 548         m_clouds_visible = true;
 549         float color_change_fraction = 0.98;
 550         if(sunlight_seen){
 551                 if(is_dawn){
 552                         m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 553                                         bgcolor_bright_dawn_f, color_change_fraction);
 554                         m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 555                                         skycolor_bright_dawn_f, color_change_fraction);
 556                         m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 557                                         cloudcolor_bright_dawn_f, color_change_fraction);
 558                 } else {
 559                         m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 560                                         bgcolor_bright_normal_f, color_change_fraction);
 561                         m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 562                                         skycolor_bright_normal_f, color_change_fraction);
 563                         m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 564                                         cloudcolor_bright_normal_f, color_change_fraction);
 565                 }
 566         } else {
 567                 m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 568                                 bgcolor_bright_indoor_f, color_change_fraction);
 569                 m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 570                                 bgcolor_bright_indoor_f, color_change_fraction);
 571                 m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 572                                 cloudcolor_bright_normal_f, color_change_fraction);
 573                 m_clouds_visible = false;
 574         }
 575
 576         video::SColor bgcolor_bright = m_bgcolor_bright_f.toSColor();
 577         m_bgcolor = video::SColor(
 578                 255,
 579                 bgcolor_bright.getRed() * m_brightness,
 580                 bgcolor_bright.getGreen() * m_brightness,
 581                 bgcolor_bright.getBlue() * m_brightness);
 582
 583         video::SColor skycolor_bright = m_skycolor_bright_f.toSColor();
 584         m_skycolor = video::SColor(
 585                 255,
 586                 skycolor_bright.getRed() * m_brightness,
 587                 skycolor_bright.getGreen() * m_brightness,
 588                 skycolor_bright.getBlue() * m_brightness);
 589
 590         // Horizon coloring based on sun and moon direction during sunset and sunrise
 591         video::SColor pointcolor = video::SColor(255, 255, 255, m_bgcolor.getAlpha());
 592         if (m_directional_colored_fog) {
 593                 if (m_horizon_blend() != 0)
 594                 {
 595                         // calculate hemisphere value from yaw, (inverted in third person front view)
 596                         s8 dir_factor = 1;
 597                         if (cam_mode > CAMERA_MODE_THIRD)
 598                                 dir_factor = -1;
 599                         f32 pointcolor_blend = wrapDegrees_0_360( yaw*dir_factor + 90);
 600                         if (pointcolor_blend > 180)
 601                                 pointcolor_blend = 360 - pointcolor_blend;
 602                         pointcolor_blend /= 180;
 603                         // bound view angle to determine where transition starts and ends
 604                         pointcolor_blend = rangelim(1 - pointcolor_blend * 1.375, 0, 1 / 1.375) * 1.375;
 605                         // combine the colors when looking up or down, otherwise turning looks weird
 606                         pointcolor_blend += (0.5 - pointcolor_blend) * (1 - MYMIN((90 - std::abs(pitch)) / 90 * 1.5, 1));
 607                         // invert direction to match where the sun and moon are rising
 608                         if (m_time_of_day > 0.5)
 609                                 pointcolor_blend = 1 - pointcolor_blend;
 610                         // horizon colors of sun and moon
 611                         f32 pointcolor_light = rangelim(m_time_brightness * 3, 0.2, 1);
 612
 613                         video::SColorf pointcolor_sun_f(1, 1, 1, 1);
 614                         if (m_sun_tonemap)
 615                         {
 616                                 pointcolor_sun_f.r = pointcolor_light * (float)m_materials[3].EmissiveColor.getRed() / 255;
 617                                 pointcolor_sun_f.b = pointcolor_light * (float)m_materials[3].EmissiveColor.getBlue() / 255;
 618                                 pointcolor_sun_f.g = pointcolor_light * (float)m_materials[3].EmissiveColor.getGreen() / 255;
 619                         }
 620                         else
 621                         {
 622                                 pointcolor_sun_f.r = pointcolor_light * 1;
 623                                 pointcolor_sun_f.b = pointcolor_light * (0.25 + (rangelim(m_time_brightness, 0.25, 0.75) - 0.25) * 2 * 0.75);
 624                                 pointcolor_sun_f.g = pointcolor_light * (pointcolor_sun_f.b * 0.375 + (rangelim(m_time_brightness, 0.05, 0.15) - 0.05) * 10 * 0.625);
 625                         }
 626
 627                         video::SColorf pointcolor_moon_f(0.5 * pointcolor_light, 0.6 * pointcolor_light, 0.8 * pointcolor_light, 1);
 628                         if (m_moon_tonemap)
 629                         {
 630                                 pointcolor_moon_f.r = pointcolor_light * (float)m_materials[4].EmissiveColor.getRed() / 255;
 631                                 pointcolor_moon_f.b = pointcolor_light * (float)m_materials[4].EmissiveColor.getBlue() / 255;
 632                                 pointcolor_moon_f.g = pointcolor_light * (float)m_materials[4].EmissiveColor.getGreen() / 255;
 633                         }
 634
 635                         video::SColor pointcolor_sun = pointcolor_sun_f.toSColor();
 636                         video::SColor pointcolor_moon = pointcolor_moon_f.toSColor();
 637                         // calculate the blend color
 638                         pointcolor = m_mix_scolor(pointcolor_moon, pointcolor_sun, pointcolor_blend);
 639                 }
 640                 m_bgcolor = m_mix_scolor(m_bgcolor, pointcolor, m_horizon_blend() * 0.5);
 641                 m_skycolor = m_mix_scolor(m_skycolor, pointcolor, m_horizon_blend() * 0.25);
 642         }
 643
 644         float cloud_direct_brightness = 0;
 645         if(sunlight_seen) {
 646                 if (!m_directional_colored_fog) {
 647                         cloud_direct_brightness = time_brightness;
 648                         if(time_brightness >= 0.2 && time_brightness < 0.7)
 649                                 cloud_direct_brightness *= 1.3;
 650                 }
 651                 else {
 652                         cloud_direct_brightness = MYMIN(m_horizon_blend() * 0.15 + m_time_brightness, 1);
 653                 }
 654         } else {
 655                 cloud_direct_brightness = direct_brightness;
 656         }
 657         m_cloud_brightness = m_cloud_brightness * cloud_color_change_fraction +
 658                         cloud_direct_brightness * (1.0 - cloud_color_change_fraction);
 659         m_cloudcolor_f = video::SColorf(
 660                         m_cloudcolor_bright_f.r * m_cloud_brightness,
 661                         m_cloudcolor_bright_f.g * m_cloud_brightness,
 662                         m_cloudcolor_bright_f.b * m_cloud_brightness,
 663                         1.0);
 664         if (m_directional_colored_fog) {
 665                 m_cloudcolor_f = m_mix_scolorf(m_cloudcolor_f, video::SColorf(pointcolor), m_horizon_blend() * 0.25);
 666         }
 667
 668 }
 669
 670