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" // getTexturePath
   7 #include "noise.h" // easeCurve
   8 #include "main.h" // g_profiler
   9 #include "profiler.h"
  10 #include "util/numeric.h" // MYMIN
  11
  12 //! constructor
  13 Sky::Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id):
  14                 scene::ISceneNode(parent, mgr, id),
  15                 m_first_update(true),
  16                 m_brightness(0.5),
  17                 m_cloud_brightness(0.5),
  18                 m_bgcolor_bright_f(1,1,1,1),
  19                 m_skycolor_bright_f(1,1,1,1),
  20                 m_cloudcolor_bright_f(1,1,1,1)
  21 {
  22         setAutomaticCulling(scene::EAC_OFF);
  23         Box.MaxEdge.set(0,0,0);
  24         Box.MinEdge.set(0,0,0);
  25
  26         // create material
  27
  28         video::SMaterial mat;
  29         mat.Lighting = false;
  30         mat.ZBuffer = video::ECFN_NEVER;
  31         mat.ZWriteEnable = false;
  32         mat.AntiAliasing=0;
  33         mat.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
  34         mat.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
  35         mat.BackfaceCulling = false;
  36
  37         m_materials[0] = mat;
  38
  39         m_materials[1] = mat;
  40         //m_materials[1].MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
  41         m_materials[1].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  42
  43         m_materials[2] = mat;
  44         m_materials[2].setTexture(0, mgr->getVideoDriver()->getTexture(
  45                         getTexturePath("sunrisebg.png").c_str()));
  46         m_materials[2].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  47         //m_materials[2].MaterialType = video::EMT_TRANSPARENT_ADD_COLOR;
  48
  49         for(u32 i=0; i<SKY_STAR_COUNT; i++){
  50                 m_stars[i] = v3f(
  51                         myrand_range(-10000,10000),
  52                         myrand_range(-10000,10000),
  53                         myrand_range(-10000,10000)
  54                 );
  55                 m_stars[i].normalize();
  56         }
  57 }
  58
  59 void Sky::OnRegisterSceneNode()
  60 {
  61         if (IsVisible)
  62                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SKY_BOX);
  63
  64         scene::ISceneNode::OnRegisterSceneNode();
  65 }
  66
  67 const core::aabbox3d<f32>& Sky::getBoundingBox() const
  68 {
  69         return Box;
  70 }
  71
  72 //! renders the node.
  73 void Sky::render()
  74 {
  75         video::IVideoDriver* driver = SceneManager->getVideoDriver();
  76         scene::ICameraSceneNode* camera = SceneManager->getActiveCamera();
  77
  78         if (!camera || !driver)
  79                 return;
  80
  81         ScopeProfiler sp(g_profiler, "Sky::render()", SPT_AVG);
  82
  83         // draw perspective skybox
  84
  85         core::matrix4 translate(AbsoluteTransformation);
  86         translate.setTranslation(camera->getAbsolutePosition());
  87
  88         // Draw the sky box between the near and far clip plane
  89         const f32 viewDistance = (camera->getNearValue() + camera->getFarValue()) * 0.5f;
  90         core::matrix4 scale;
  91         scale.setScale(core::vector3df(viewDistance, viewDistance, viewDistance));
  92
  93         driver->setTransform(video::ETS_WORLD, translate * scale);
  94
  95         if(m_sunlight_seen)
  96         {
  97                 float sunsize = 0.07;
  98                 video::SColorf suncolor_f(1, 1, 0, 1);
  99                 suncolor_f.r = 1;
 100                 suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.7+m_time_brightness*(0.5)));
 101                 suncolor_f.b = MYMAX(0.0, m_brightness*0.95);
 102                 video::SColorf suncolor2_f(1, 1, 1, 1);
 103                 suncolor_f.r = 1;
 104                 suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.85+m_time_brightness*(0.5)));
 105                 suncolor_f.b = MYMAX(0.0, m_brightness);
 106
 107                 float moonsize = 0.04;
 108                 video::SColorf mooncolor_f(0.50, 0.57, 0.65, 1);
 109                 video::SColorf mooncolor2_f(0.85, 0.875, 0.9, 1);
 110
 111                 float nightlength = 0.415;
 112                 float wn = nightlength / 2;
 113                 float wicked_time_of_day = 0;
 114                 if(m_time_of_day > wn && m_time_of_day < 1.0 - wn)
 115                         wicked_time_of_day = (m_time_of_day - wn)/(1.0-wn*2)*0.5 + 0.25;
 116                 else if(m_time_of_day < 0.5)
 117                         wicked_time_of_day = m_time_of_day / wn * 0.25;
 118                 else
 119                         wicked_time_of_day = 1.0 - ((1.0-m_time_of_day) / wn * 0.25);
 120                 /*std::cerr<<"time_of_day="<<m_time_of_day<<" -> "
 121                                 <<"wicked_time_of_day="<<wicked_time_of_day<<std::endl;*/
 122
 123                 video::SColor suncolor = suncolor_f.toSColor();
 124                 video::SColor suncolor2 = suncolor2_f.toSColor();
 125                 video::SColor mooncolor = mooncolor_f.toSColor();
 126                 video::SColor mooncolor2 = mooncolor2_f.toSColor();
 127
 128                 const f32 t = 1.0f;
 129                 const f32 o = 0.0f;
 130                 static const u16 indices[4] = {0,1,2,3};
 131                 video::S3DVertex vertices[4];
 132
 133                 driver->setMaterial(m_materials[1]);
 134
 135                 //video::SColor cloudyfogcolor(255,255,255,255);
 136                 video::SColor cloudyfogcolor = m_bgcolor;
 137                 //video::SColor cloudyfogcolor = m_bgcolor.getInterpolated(m_skycolor, 0.5);
 138
 139                 // Draw far cloudy fog thing
 140                 for(u32 j=0; j<4; j++)
 141                 {
 142                         video::SColor c = cloudyfogcolor.getInterpolated(m_skycolor, 0.45);
 143                         vertices[0] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, t);
 144                         vertices[1] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, t);
 145                         vertices[2] = video::S3DVertex( 1, 0.12,-1, 0,0,1, c, o, o);
 146                         vertices[3] = video::S3DVertex(-1, 0.12,-1, 0,0,1, c, t, o);
 147                         for(u32 i=0; i<4; i++){
 148                                 if(j==0)
 149                                         // Don't switch
 150                                         {}
 151                                 else if(j==1)
 152                                         // Switch from -Z (south) to +X (east)
 153                                         vertices[i].Pos.rotateXZBy(90);
 154                                 else if(j==2)
 155                                         // Switch from -Z (south) to -X (west)
 156                                         vertices[i].Pos.rotateXZBy(-90);
 157                                 else
 158                                         // Switch from -Z (south) to -Z (north)
 159                                         vertices[i].Pos.rotateXZBy(-180);
 160                         }
 161                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 162                 }
 163                 for(u32 j=0; j<4; j++)
 164                 {
 165                         video::SColor c = cloudyfogcolor;
 166                         vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
 167                         vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
 168                         vertices[2] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, o);
 169                         vertices[3] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, o);
 170                         for(u32 i=0; i<4; i++){
 171                                 if(j==0)
 172                                         // Don't switch
 173                                         {}
 174                                 else if(j==1)
 175                                         // Switch from -Z (south) to +X (east)
 176                                         vertices[i].Pos.rotateXZBy(90);
 177                                 else if(j==2)
 178                                         // Switch from -Z (south) to -X (west)
 179                                         vertices[i].Pos.rotateXZBy(-90);
 180                                 else
 181                                         // Switch from -Z (south) to -Z (north)
 182                                         vertices[i].Pos.rotateXZBy(-180);
 183                         }
 184                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 185                 }
 186
 187                 driver->setMaterial(m_materials[2]);
 188
 189                 {
 190                         float mid1 = 0.25;
 191                         float mid = (wicked_time_of_day < 0.5 ? mid1 : (1.0 - mid1));
 192                         float a_ = 1.0 - fabs(wicked_time_of_day - mid) * 35.0;
 193                         float a = easeCurve(MYMAX(0, MYMIN(1, a_)));
 194                         //std::cerr<<"a_="<<a_<<" a="<<a<<std::endl;
 195                         video::SColor c(255,255,255,255);
 196                         float y = -(1.0 - a) * 0.2;
 197                         vertices[0] = video::S3DVertex(-1,-0.05+y,-1, 0,0,1, c, t, t);
 198                         vertices[1] = video::S3DVertex( 1,-0.05+y,-1, 0,0,1, c, o, t);
 199                         vertices[2] = video::S3DVertex( 1, 0.2+y,-1, 0,0,1, c, o, o);
 200                         vertices[3] = video::S3DVertex(-1, 0.2+y,-1, 0,0,1, c, t, o);
 201                         for(u32 i=0; i<4; i++){
 202                                 if(wicked_time_of_day < 0.5)
 203                                         // Switch from -Z (south) to +X (east)
 204                                         vertices[i].Pos.rotateXZBy(90);
 205                                 else
 206                                         // Switch from -Z (south) to -X (west)
 207                                         vertices[i].Pos.rotateXZBy(-90);
 208                         }
 209                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 210                 }
 211
 212                 driver->setMaterial(m_materials[1]);
 213
 214                 // Draw sun
 215                 if(wicked_time_of_day > 0.15 && wicked_time_of_day < 0.85)
 216                 {
 217                         float d = sunsize * 1.7;
 218                         video::SColor c = suncolor;
 219                         c.setAlpha(0.05*255);
 220                         vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 221                         vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 222                         vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 223                         vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 224                         for(u32 i=0; i<4; i++){
 225                                 // Switch from -Z (south) to +X (east)
 226                                 vertices[i].Pos.rotateXZBy(90);
 227                                 vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 228                         }
 229                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 230
 231                         d = sunsize * 1.2;
 232                         c = suncolor;
 233                         c.setAlpha(0.15*255);
 234                         vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 235                         vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 236                         vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 237                         vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 238                         for(u32 i=0; i<4; i++){
 239                                 // Switch from -Z (south) to +X (east)
 240                                 vertices[i].Pos.rotateXZBy(90);
 241                                 vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 242                         }
 243                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 244
 245                         d = sunsize;
 246                         vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor, t, t);
 247                         vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor, o, t);
 248                         vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor, o, o);
 249                         vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor, t, o);
 250                         for(u32 i=0; i<4; i++){
 251                                 // Switch from -Z (south) to +X (east)
 252                                 vertices[i].Pos.rotateXZBy(90);
 253                                 vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 254                         }
 255                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 256
 257                         d = sunsize * 0.7;
 258                         vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor2, t, t);
 259                         vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor2, o, t);
 260                         vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor2, o, o);
 261                         vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor2, t, o);
 262                         for(u32 i=0; i<4; i++){
 263                                 // Switch from -Z (south) to +X (east)
 264                                 vertices[i].Pos.rotateXZBy(90);
 265                                 vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 266                         }
 267                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 268                 }
 269                 // Draw moon
 270                 if(wicked_time_of_day < 0.3 || wicked_time_of_day > 0.7)
 271                 {
 272                         float d = moonsize * 1.9;
 273                         video::SColor c = mooncolor;
 274                         c.setAlpha(0.05*255);
 275                         vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 276                         vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 277                         vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 278                         vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 279                         for(u32 i=0; i<4; i++){
 280                                 // Switch from -Z (south) to -X (west)
 281                                 vertices[i].Pos.rotateXZBy(-90);
 282                                 vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 283                         }
 284                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 285
 286                         d = moonsize * 1.3;
 287                         c = mooncolor;
 288                         c.setAlpha(0.15*255);
 289                         vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 290                         vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 291                         vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 292                         vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 293                         for(u32 i=0; i<4; i++){
 294                                 // Switch from -Z (south) to -X (west)
 295                                 vertices[i].Pos.rotateXZBy(-90);
 296                                 vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 297                         }
 298                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 299
 300                         d = moonsize;
 301                         vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor, t, t);
 302                         vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, mooncolor, o, t);
 303                         vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, mooncolor, o, o);
 304                         vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, mooncolor, t, o);
 305                         for(u32 i=0; i<4; i++){
 306                                 // Switch from -Z (south) to -X (west)
 307                                 vertices[i].Pos.rotateXZBy(-90);
 308                                 vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 309                         }
 310                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 311
 312                         float d2 = moonsize * 0.6;
 313                         vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor2, t, t);
 314                         vertices[1] = video::S3DVertex( d2,-d,-1, 0,0,1, mooncolor2, o, t);
 315                         vertices[2] = video::S3DVertex( d2, d2,-1, 0,0,1, mooncolor2, o, o);
 316                         vertices[3] = video::S3DVertex(-d, d2,-1, 0,0,1, mooncolor2, t, o);
 317                         for(u32 i=0; i<4; i++){
 318                                 // Switch from -Z (south) to -X (west)
 319                                 vertices[i].Pos.rotateXZBy(-90);
 320                                 vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 321                         }
 322                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 323                 }
 324                 // Stars
 325                 do{
 326                         float starbrightness = MYMAX(0, MYMIN(1,
 327                                         (0.285 - fabs(wicked_time_of_day < 0.5 ?
 328                                         wicked_time_of_day : (1.0 - wicked_time_of_day))) * 10));
 329                         float f = starbrightness;
 330                         float d = 0.007;
 331                         video::SColor starcolor(255, f*90,f*90,f*90);
 332                         if(starcolor.getBlue() < m_skycolor.getBlue())
 333                                 break;
 334                         u16 indices[SKY_STAR_COUNT*4];
 335                         video::S3DVertex vertices[SKY_STAR_COUNT*4];
 336                         for(u32 i=0; i<SKY_STAR_COUNT; i++){
 337                                 indices[i*4+0] = i*4+0;
 338                                 indices[i*4+1] = i*4+1;
 339                                 indices[i*4+2] = i*4+2;
 340                                 indices[i*4+3] = i*4+3;
 341                                 v3f p = m_stars[i];
 342                                 core::CMatrix4<f32> a;
 343                                 a.buildRotateFromTo(v3f(0,1,0), v3f(d,1+d/2,0));
 344                                 v3f p1 = p;
 345                                 a.rotateVect(p1);
 346                                 a.buildRotateFromTo(v3f(0,1,0), v3f(d,1,d));
 347                                 v3f p2 = p;
 348                                 a.rotateVect(p2);
 349                                 a.buildRotateFromTo(v3f(0,1,0), v3f(0,1-d/2,d));
 350                                 v3f p3 = p;
 351                                 a.rotateVect(p3);
 352                                 p.rotateXYBy(wicked_time_of_day * 360 - 90);
 353                                 p1.rotateXYBy(wicked_time_of_day * 360 - 90);
 354                                 p2.rotateXYBy(wicked_time_of_day * 360 - 90);
 355                                 p3.rotateXYBy(wicked_time_of_day * 360 - 90);
 356                                 vertices[i*4+0].Pos = p;
 357                                 vertices[i*4+0].Color = starcolor;
 358                                 vertices[i*4+1].Pos = p1;
 359                                 vertices[i*4+1].Color = starcolor;
 360                                 vertices[i*4+2].Pos = p2;
 361                                 vertices[i*4+2].Color = starcolor;
 362                                 vertices[i*4+3].Pos = p3;
 363                                 vertices[i*4+3].Color = starcolor;
 364                         }
 365                         driver->drawVertexPrimitiveList(vertices, SKY_STAR_COUNT*4,
 366                                         indices, SKY_STAR_COUNT, video::EVT_STANDARD,
 367                                         scene::EPT_QUADS, video::EIT_16BIT);
 368                 }while(0);
 369
 370                 for(u32 j=0; j<2; j++)
 371                 {
 372                         //video::SColor c = m_skycolor;
 373                         video::SColor c = cloudyfogcolor;
 374                         vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
 375                         vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
 376                         vertices[2] = video::S3DVertex( 1,-0.02,-1, 0,0,1, c, o, o);
 377                         vertices[3] = video::S3DVertex(-1,-0.02,-1, 0,0,1, c, t, o);
 378                         for(u32 i=0; i<4; i++){
 379                                 //if(wicked_time_of_day < 0.5)
 380                                 if(j==0)
 381                                         // Switch from -Z (south) to +X (east)
 382                                         vertices[i].Pos.rotateXZBy(90);
 383                                 else
 384                                         // Switch from -Z (south) to -X (west)
 385                                         vertices[i].Pos.rotateXZBy(-90);
 386                         }
 387                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 388                 }
 389         }
 390 }
 391
 392 void Sky::update(float time_of_day, float time_brightness,
 393                 float direct_brightness, bool sunlight_seen)
 394 {
 395         // Stabilize initial brightness and color values by flooding updates
 396         if(m_first_update){
 397                 /*dstream<<"First update with time_of_day="<<time_of_day
 398                                 <<" time_brightness="<<time_brightness
 399                                 <<" direct_brightness="<<direct_brightness
 400                                 <<" sunlight_seen="<<sunlight_seen<<std::endl;*/
 401                 m_first_update = false;
 402                 for(u32 i=0; i<100; i++){
 403                         update(time_of_day, time_brightness, direct_brightness,
 404                                         sunlight_seen);
 405                 }
 406                 return;
 407         }
 408
 409         m_time_of_day = time_of_day;
 410         m_time_brightness = time_brightness;
 411         m_sunlight_seen = sunlight_seen;
 412
 413         bool is_dawn = (time_brightness >= 0.20 && time_brightness < 0.35);
 414
 415         //video::SColorf bgcolor_bright_normal_f(170./255,200./255,230./255, 1.0);
 416         video::SColorf bgcolor_bright_normal_f(155./255,193./255,240./255, 1.0);
 417         video::SColorf bgcolor_bright_indoor_f(100./255,100./255,100./255, 1.0);
 418         //video::SColorf bgcolor_bright_dawn_f(0.666,200./255*0.7,230./255*0.5,1.0);
 419         //video::SColorf bgcolor_bright_dawn_f(0.666,0.549,0.220,1.0);
 420         //video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.0, 1.0);
 421         //video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.2,1.0);
 422         video::SColorf bgcolor_bright_dawn_f
 423                         (155./255*1.2,193./255,240./255, 1.0);
 424
 425         video::SColorf skycolor_bright_normal_f =
 426                         video::SColor(255, 140, 186, 250);
 427         video::SColorf skycolor_bright_dawn_f =
 428                         video::SColor(255, 180, 186, 250);
 429
 430         video::SColorf cloudcolor_bright_normal_f =
 431                         video::SColor(255, 240,240,255);
 432         //video::SColorf cloudcolor_bright_dawn_f(1.0, 0.591, 0.4);
 433         //video::SColorf cloudcolor_bright_dawn_f(1.0, 0.65, 0.44);
 434         video::SColorf cloudcolor_bright_dawn_f(1.0, 0.7, 0.5);
 435
 436         if(sunlight_seen){
 437                 //m_brightness = m_brightness * 0.95 + direct_brightness * 0.05;
 438                 m_brightness = m_brightness * 0.95 + time_brightness * 0.05;
 439         }
 440         else{
 441                 if(direct_brightness < m_brightness)
 442                         m_brightness = m_brightness * 0.95 + direct_brightness * 0.05;
 443                 else
 444                         m_brightness = m_brightness * 0.98 + direct_brightness * 0.02;
 445         }
 446
 447         m_clouds_visible = true;
 448         float color_change_fraction = 0.98;
 449         if(sunlight_seen){
 450                 if(is_dawn){
 451                         m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 452                                         bgcolor_bright_dawn_f, color_change_fraction);
 453                         m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 454                                         skycolor_bright_dawn_f, color_change_fraction);
 455                         m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 456                                         cloudcolor_bright_dawn_f, color_change_fraction);
 457                 } else {
 458                         m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 459                                         bgcolor_bright_normal_f, color_change_fraction);
 460                         m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 461                                         skycolor_bright_normal_f, color_change_fraction);
 462                         m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 463                                         cloudcolor_bright_normal_f, color_change_fraction);
 464                 }
 465         } else {
 466                 m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 467                                 bgcolor_bright_indoor_f, color_change_fraction);
 468                 m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 469                                 cloudcolor_bright_normal_f, color_change_fraction);
 470                 m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 471                                 bgcolor_bright_indoor_f, color_change_fraction);
 472                 m_clouds_visible = false;
 473         }
 474         video::SColor bgcolor_bright = m_bgcolor_bright_f.toSColor();
 475         m_bgcolor = video::SColor(
 476                         255,
 477                         bgcolor_bright.getRed() * m_brightness,
 478                         bgcolor_bright.getGreen() * m_brightness,
 479                         bgcolor_bright.getBlue() * m_brightness);
 480
 481         video::SColor skycolor_bright = m_skycolor_bright_f.toSColor();
 482         m_skycolor = video::SColor(
 483                         255,
 484                         skycolor_bright.getRed() * m_brightness,
 485                         skycolor_bright.getGreen() * m_brightness,
 486                         skycolor_bright.getBlue() * m_brightness);
 487
 488         float cloud_direct_brightness = 0;
 489         if(sunlight_seen){
 490                 cloud_direct_brightness = time_brightness;
 491                 if(time_brightness >= 0.2 && time_brightness < 0.7)
 492                                 cloud_direct_brightness *= 1.3;
 493         } else {
 494                 cloud_direct_brightness = direct_brightness;
 495         }
 496         m_cloud_brightness = m_cloud_brightness * 0.95 +
 497                         cloud_direct_brightness * (1.0 - 0.95);
 498         m_cloudcolor_f = video::SColorf(
 499                         m_cloudcolor_bright_f.getRed() * m_cloud_brightness,
 500                         m_cloudcolor_bright_f.getGreen() * m_cloud_brightness,
 501                         m_cloudcolor_bright_f.getBlue() * m_cloud_brightness,
 502                         1.0);
 503
 504 }
 505
 506