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 "client/tile.h"
   7 #include "noise.h"            // easeCurve
   8 #include "profiler.h"
   9 #include "util/numeric.h"
  10 #include <cmath>
  11 #include "settings.h"
  12 #include "camera.h"           // CameraModes
  13
  14 //! constructor
  15 Sky::Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id,
  16                 ITextureSource *tsrc):
  17                 scene::ISceneNode(parent, mgr, id),
  18                 m_visible(true),
  19                 m_fallback_bg_color(255,255,255,255),
  20                 m_first_update(true),
  21                 m_brightness(0.5),
  22                 m_cloud_brightness(0.5),
  23                 m_bgcolor_bright_f(1,1,1,1),
  24                 m_skycolor_bright_f(1,1,1,1),
  25                 m_cloudcolor_bright_f(1,1,1,1)
  26 {
  27         setAutomaticCulling(scene::EAC_OFF);
  28         m_box.MaxEdge.set(0,0,0);
  29         m_box.MinEdge.set(0,0,0);
  30
  31         // create material
  32
  33         video::SMaterial mat;
  34         mat.Lighting = false;
  35         mat.ZBuffer = video::ECFN_NEVER;
  36         mat.ZWriteEnable = false;
  37         mat.AntiAliasing=0;
  38         mat.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
  39         mat.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
  40         mat.BackfaceCulling = false;
  41
  42         m_materials[0] = mat;
  43
  44         m_materials[1] = mat;
  45         //m_materials[1].MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
  46         m_materials[1].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  47
  48         m_materials[2] = mat;
  49         m_materials[2].setTexture(0, tsrc->getTextureForMesh("sunrisebg.png"));
  50         m_materials[2].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  51         //m_materials[2].MaterialType = video::EMT_TRANSPARENT_ADD_COLOR;
  52
  53         m_sun_texture = tsrc->isKnownSourceImage("sun.png") ?
  54                 tsrc->getTextureForMesh("sun.png") : NULL;
  55         m_moon_texture = tsrc->isKnownSourceImage("moon.png") ?
  56                 tsrc->getTextureForMesh("moon.png") : NULL;
  57         m_sun_tonemap = tsrc->isKnownSourceImage("sun_tonemap.png") ?
  58                 tsrc->getTexture("sun_tonemap.png") : NULL;
  59         m_moon_tonemap = tsrc->isKnownSourceImage("moon_tonemap.png") ?
  60                 tsrc->getTexture("moon_tonemap.png") : NULL;
  61
  62         if (m_sun_texture){
  63                 m_materials[3] = mat;
  64                 m_materials[3].setTexture(0, m_sun_texture);
  65                 m_materials[3].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  66                 if (m_sun_tonemap)
  67                         m_materials[3].Lighting = true;
  68         }
  69         if (m_moon_texture){
  70                 m_materials[4] = mat;
  71                 m_materials[4].setTexture(0, m_moon_texture);
  72                 m_materials[4].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  73                 if (m_moon_tonemap)
  74                         m_materials[4].Lighting = true;
  75         }
  76
  77         for(u32 i=0; i<SKY_STAR_COUNT; i++){
  78                 m_stars[i] = v3f(
  79                         myrand_range(-10000,10000),
  80                         myrand_range(-10000,10000),
  81                         myrand_range(-10000,10000)
  82                 );
  83                 m_stars[i].normalize();
  84         }
  85
  86         m_directional_colored_fog = g_settings->getBool("directional_colored_fog");
  87 }
  88
  89 void Sky::OnRegisterSceneNode()
  90 {
  91         if (IsVisible)
  92                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SKY_BOX);
  93
  94         scene::ISceneNode::OnRegisterSceneNode();
  95 }
  96
  97 //! renders the node.
  98 void Sky::render()
  99 {
 100         if(!m_visible)
 101                 return;
 102
 103         video::IVideoDriver* driver = SceneManager->getVideoDriver();
 104         scene::ICameraSceneNode* camera = SceneManager->getActiveCamera();
 105
 106         if (!camera || !driver)
 107                 return;
 108
 109         ScopeProfiler sp(g_profiler, "Sky::render()", SPT_AVG);
 110
 111         // draw perspective skybox
 112
 113         core::matrix4 translate(AbsoluteTransformation);
 114         translate.setTranslation(camera->getAbsolutePosition());
 115
 116         // Draw the sky box between the near and far clip plane
 117         const f32 viewDistance = (camera->getNearValue() + camera->getFarValue()) * 0.5f;
 118         core::matrix4 scale;
 119         scale.setScale(core::vector3df(viewDistance, viewDistance, viewDistance));
 120
 121         driver->setTransform(video::ETS_WORLD, translate * scale);
 122
 123         if(m_sunlight_seen)
 124         {
 125                 float sunsize = 0.07;
 126                 video::SColorf suncolor_f(1, 1, 0, 1);
 127                 suncolor_f.r = 1;
 128                 suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.7+m_time_brightness*(0.5)));
 129                 suncolor_f.b = MYMAX(0.0, m_brightness*0.95);
 130                 video::SColorf suncolor2_f(1, 1, 1, 1);
 131                 suncolor_f.r = 1;
 132                 suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.85+m_time_brightness*(0.5)));
 133                 suncolor_f.b = MYMAX(0.0, m_brightness);
 134
 135                 float moonsize = 0.04;
 136                 video::SColorf mooncolor_f(0.50, 0.57, 0.65, 1);
 137                 video::SColorf mooncolor2_f(0.85, 0.875, 0.9, 1);
 138
 139                 float nightlength = 0.415;
 140                 float wn = nightlength / 2;
 141                 float wicked_time_of_day = 0;
 142                 if(m_time_of_day > wn && m_time_of_day < 1.0 - wn)
 143                         wicked_time_of_day = (m_time_of_day - wn)/(1.0-wn*2)*0.5 + 0.25;
 144                 else if(m_time_of_day < 0.5)
 145                         wicked_time_of_day = m_time_of_day / wn * 0.25;
 146                 else
 147                         wicked_time_of_day = 1.0 - ((1.0-m_time_of_day) / wn * 0.25);
 148                 /*std::cerr<<"time_of_day="<<m_time_of_day<<" -> "
 149                                 <<"wicked_time_of_day="<<wicked_time_of_day<<std::endl;*/
 150
 151                 video::SColor suncolor = suncolor_f.toSColor();
 152                 video::SColor suncolor2 = suncolor2_f.toSColor();
 153                 video::SColor mooncolor = mooncolor_f.toSColor();
 154                 video::SColor mooncolor2 = mooncolor2_f.toSColor();
 155
 156                 // Calculate offset normalized to the X dimension of a 512x1 px tonemap
 157                 float offset=(1.0-fabs(sin((m_time_of_day - 0.5)*irr::core::PI)))*511;
 158
 159                 if (m_sun_tonemap){
 160                         u8 * texels = (u8 *)m_sun_tonemap->lock();
 161                         video::SColor* texel = (video::SColor *)(texels + (u32)offset * 4);
 162                         video::SColor texel_color (255,texel->getRed(),texel->getGreen(), texel->getBlue());
 163                         m_sun_tonemap->unlock();
 164                         m_materials[3].EmissiveColor = texel_color;
 165                 }
 166                 if (m_moon_tonemap){
 167                         u8 * texels = (u8 *)m_moon_tonemap->lock();
 168                         video::SColor* texel = (video::SColor *)(texels + (u32)offset * 4);
 169                         video::SColor texel_color (255,texel->getRed(),texel->getGreen(), texel->getBlue());
 170                         m_moon_tonemap->unlock();
 171                         m_materials[4].EmissiveColor = texel_color;
 172                 }
 173
 174                 const f32 t = 1.0f;
 175                 const f32 o = 0.0f;
 176                 static const u16 indices[4] = {0,1,2,3};
 177                 video::S3DVertex vertices[4];
 178
 179                 driver->setMaterial(m_materials[1]);
 180
 181                 //video::SColor cloudyfogcolor(255,255,255,255);
 182                 video::SColor cloudyfogcolor = m_bgcolor;
 183                 //video::SColor cloudyfogcolor = m_bgcolor.getInterpolated(m_skycolor, 0.5);
 184
 185                 // Draw far cloudy fog thing
 186                 for(u32 j=0; j<4; j++)
 187                 {
 188                         video::SColor c = cloudyfogcolor.getInterpolated(m_skycolor, 0.45);
 189                         vertices[0] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, t);
 190                         vertices[1] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, t);
 191                         vertices[2] = video::S3DVertex( 1, 0.12,-1, 0,0,1, c, o, o);
 192                         vertices[3] = video::S3DVertex(-1, 0.12,-1, 0,0,1, c, t, o);
 193                         for(u32 i=0; i<4; i++){
 194                                 if(j==0)
 195                                         // Don't switch
 196                                         {}
 197                                 else if(j==1)
 198                                         // Switch from -Z (south) to +X (east)
 199                                         vertices[i].Pos.rotateXZBy(90);
 200                                 else if(j==2)
 201                                         // Switch from -Z (south) to -X (west)
 202                                         vertices[i].Pos.rotateXZBy(-90);
 203                                 else
 204                                         // Switch from -Z (south) to -Z (north)
 205                                         vertices[i].Pos.rotateXZBy(-180);
 206                         }
 207                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 208                 }
 209                 for(u32 j=0; j<4; j++)
 210                 {
 211                         video::SColor c = cloudyfogcolor;
 212                         vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
 213                         vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
 214                         vertices[2] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, o);
 215                         vertices[3] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, o);
 216                         for(u32 i=0; i<4; i++){
 217                                 if(j==0)
 218                                         // Don't switch
 219                                         {}
 220                                 else if(j==1)
 221                                         // Switch from -Z (south) to +X (east)
 222                                         vertices[i].Pos.rotateXZBy(90);
 223                                 else if(j==2)
 224                                         // Switch from -Z (south) to -X (west)
 225                                         vertices[i].Pos.rotateXZBy(-90);
 226                                 else
 227                                         // Switch from -Z (south) to -Z (north)
 228                                         vertices[i].Pos.rotateXZBy(-180);
 229                         }
 230                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 231                 }
 232
 233                 driver->setMaterial(m_materials[2]);
 234
 235                 {
 236                         float mid1 = 0.25;
 237                         float mid = (wicked_time_of_day < 0.5 ? mid1 : (1.0 - mid1));
 238                         float a_ = 1.0 - fabs(wicked_time_of_day - mid) * 35.0;
 239                         float a = easeCurve(MYMAX(0, MYMIN(1, a_)));
 240                         //std::cerr<<"a_="<<a_<<" a="<<a<<std::endl;
 241                         video::SColor c(255,255,255,255);
 242                         float y = -(1.0 - a) * 0.22;
 243                         vertices[0] = video::S3DVertex(-1,-0.05+y,-1, 0,0,1, c, t, t);
 244                         vertices[1] = video::S3DVertex( 1,-0.05+y,-1, 0,0,1, c, o, t);
 245                         vertices[2] = video::S3DVertex( 1, 0.2+y,-1, 0,0,1, c, o, o);
 246                         vertices[3] = video::S3DVertex(-1, 0.2+y,-1, 0,0,1, c, t, o);
 247                         for(u32 i=0; i<4; i++){
 248                                 if(wicked_time_of_day < 0.5)
 249                                         // Switch from -Z (south) to +X (east)
 250                                         vertices[i].Pos.rotateXZBy(90);
 251                                 else
 252                                         // Switch from -Z (south) to -X (west)
 253                                         vertices[i].Pos.rotateXZBy(-90);
 254                         }
 255                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 256                 }
 257
 258                 // Draw sun
 259                 if(wicked_time_of_day > 0.15 && wicked_time_of_day < 0.85){
 260                         if (!m_sun_texture){
 261                                 driver->setMaterial(m_materials[1]);
 262                                 float d = sunsize * 1.7;
 263                                 video::SColor c = suncolor;
 264                                 c.setAlpha(0.05*255);
 265                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 266                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 267                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 268                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 269                                 for(u32 i=0; i<4; i++){
 270                                         // Switch from -Z (south) to +X (east)
 271                                         vertices[i].Pos.rotateXZBy(90);
 272                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 273                                 }
 274                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 275
 276                                 d = sunsize * 1.2;
 277                                 c = suncolor;
 278                                 c.setAlpha(0.15*255);
 279                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 280                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 281                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 282                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 283                                 for(u32 i=0; i<4; i++){
 284                                         // Switch from -Z (south) to +X (east)
 285                                         vertices[i].Pos.rotateXZBy(90);
 286                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 287                                 }
 288                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 289
 290                                 d = sunsize;
 291                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor, t, t);
 292                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor, o, t);
 293                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor, o, o);
 294                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor, t, o);
 295                                 for(u32 i=0; i<4; i++){
 296                                         // Switch from -Z (south) to +X (east)
 297                                         vertices[i].Pos.rotateXZBy(90);
 298                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 299                                 }
 300                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 301
 302                                 d = sunsize * 0.7;
 303                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor2, t, t);
 304                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor2, o, t);
 305                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor2, o, o);
 306                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor2, t, o);
 307                                 for(u32 i=0; i<4; i++){
 308                                         // Switch from -Z (south) to +X (east)
 309                                         vertices[i].Pos.rotateXZBy(90);
 310                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 311                                 }
 312                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 313                         } else {
 314                                 driver->setMaterial(m_materials[3]);
 315                                 float d = sunsize * 1.7;
 316                                 video::SColor c;
 317                                 if (m_sun_tonemap)
 318                                         c = video::SColor (0,0,0,0);
 319                                 else
 320                                         c = video::SColor (255,255,255,255);
 321                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 322                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 323                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 324                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 325                                 for(u32 i=0; i<4; i++){
 326                                         // Switch from -Z (south) to +X (east)
 327                                         vertices[i].Pos.rotateXZBy(90);
 328                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 329                                 }
 330                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 331                         }
 332                 }
 333
 334                 // Draw moon
 335                 if(wicked_time_of_day < 0.3 || wicked_time_of_day > 0.7)
 336                 {
 337                         if (!m_moon_texture){
 338                                 driver->setMaterial(m_materials[1]);
 339                                 float d = moonsize * 1.9;
 340                                 video::SColor c = mooncolor;
 341                                 c.setAlpha(0.05*255);
 342                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 343                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 344                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 345                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 346                                 for(u32 i=0; i<4; i++){
 347                                         // Switch from -Z (south) to -X (west)
 348                                         vertices[i].Pos.rotateXZBy(-90);
 349                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 350                                 }
 351                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 352
 353                                 d = moonsize * 1.3;
 354                                 c = mooncolor;
 355                                 c.setAlpha(0.15*255);
 356                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 357                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 358                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 359                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 360                                 for(u32 i=0; i<4; i++){
 361                                         // Switch from -Z (south) to -X (west)
 362                                         vertices[i].Pos.rotateXZBy(-90);
 363                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 364                                 }
 365                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 366
 367                                 d = moonsize;
 368                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor, t, t);
 369                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, mooncolor, o, t);
 370                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, mooncolor, o, o);
 371                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, mooncolor, t, o);
 372                                 for(u32 i=0; i<4; i++){
 373                                         // Switch from -Z (south) to -X (west)
 374                                         vertices[i].Pos.rotateXZBy(-90);
 375                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 376                                 }
 377                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 378
 379                                 float d2 = moonsize * 0.6;
 380                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor2, t, t);
 381                                 vertices[1] = video::S3DVertex( d2,-d,-1, 0,0,1, mooncolor2, o, t);
 382                                 vertices[2] = video::S3DVertex( d2, d2,-1, 0,0,1, mooncolor2, o, o);
 383                                 vertices[3] = video::S3DVertex(-d, d2,-1, 0,0,1, mooncolor2, t, o);
 384                                 for(u32 i=0; i<4; i++){
 385                                         // Switch from -Z (south) to -X (west)
 386                                         vertices[i].Pos.rotateXZBy(-90);
 387                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 388                                 }
 389                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 390                         } else {
 391                                 driver->setMaterial(m_materials[4]);
 392                                 float d = moonsize * 1.9;
 393                                 video::SColor c;
 394                                 if (m_moon_tonemap)
 395                                         c = video::SColor (0,0,0,0);
 396                                 else
 397                                         c = video::SColor (255,255,255,255);
 398                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 399                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 400                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 401                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 402                                 for(u32 i=0; i<4; i++){
 403                                         // Switch from -Z (south) to -X (west)
 404                                         vertices[i].Pos.rotateXZBy(-90);
 405                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 406                                 }
 407                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 408                         }
 409                 }
 410
 411                 // Stars
 412                 driver->setMaterial(m_materials[1]);
 413                 do{
 414                         float starbrightness = MYMAX(0, MYMIN(1,
 415                                         (0.285 - fabs(wicked_time_of_day < 0.5 ?
 416                                         wicked_time_of_day : (1.0 - wicked_time_of_day))) * 10));
 417                         float f = starbrightness;
 418                         float d = 0.007;
 419                         video::SColor starcolor(255, f*90,f*90,f*90);
 420                         if(starcolor.getBlue() < m_skycolor.getBlue())
 421                                 break;
 422                         u16 indices[SKY_STAR_COUNT*4];
 423                         video::S3DVertex vertices[SKY_STAR_COUNT*4];
 424                         for(u32 i=0; i<SKY_STAR_COUNT; i++){
 425                                 indices[i*4+0] = i*4+0;
 426                                 indices[i*4+1] = i*4+1;
 427                                 indices[i*4+2] = i*4+2;
 428                                 indices[i*4+3] = i*4+3;
 429                                 v3f p = m_stars[i];
 430                                 core::CMatrix4<f32> a;
 431                                 a.buildRotateFromTo(v3f(0,1,0), v3f(d,1+d/2,0));
 432                                 v3f p1 = p;
 433                                 a.rotateVect(p1);
 434                                 a.buildRotateFromTo(v3f(0,1,0), v3f(d,1,d));
 435                                 v3f p2 = p;
 436                                 a.rotateVect(p2);
 437                                 a.buildRotateFromTo(v3f(0,1,0), v3f(0,1-d/2,d));
 438                                 v3f p3 = p;
 439                                 a.rotateVect(p3);
 440                                 p.rotateXYBy(wicked_time_of_day * 360 - 90);
 441                                 p1.rotateXYBy(wicked_time_of_day * 360 - 90);
 442                                 p2.rotateXYBy(wicked_time_of_day * 360 - 90);
 443                                 p3.rotateXYBy(wicked_time_of_day * 360 - 90);
 444                                 vertices[i*4+0].Pos = p;
 445                                 vertices[i*4+0].Color = starcolor;
 446                                 vertices[i*4+1].Pos = p1;
 447                                 vertices[i*4+1].Color = starcolor;
 448                                 vertices[i*4+2].Pos = p2;
 449                                 vertices[i*4+2].Color = starcolor;
 450                                 vertices[i*4+3].Pos = p3;
 451                                 vertices[i*4+3].Color = starcolor;
 452                         }
 453                         driver->drawVertexPrimitiveList(vertices, SKY_STAR_COUNT*4,
 454                                         indices, SKY_STAR_COUNT, video::EVT_STANDARD,
 455                                         scene::EPT_QUADS, video::EIT_16BIT);
 456                 }while(0);
 457
 458                 for(u32 j=0; j<2; j++)
 459                 {
 460                         //video::SColor c = m_skycolor;
 461                         video::SColor c = cloudyfogcolor;
 462                         vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
 463                         vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
 464                         vertices[2] = video::S3DVertex( 1,-0.02,-1, 0,0,1, c, o, o);
 465                         vertices[3] = video::S3DVertex(-1,-0.02,-1, 0,0,1, c, t, o);
 466                         for(u32 i=0; i<4; i++){
 467                                 //if(wicked_time_of_day < 0.5)
 468                                 if(j==0)
 469                                         // Switch from -Z (south) to +X (east)
 470                                         vertices[i].Pos.rotateXZBy(90);
 471                                 else
 472                                         // Switch from -Z (south) to -X (west)
 473                                         vertices[i].Pos.rotateXZBy(-90);
 474                         }
 475                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 476                 }
 477         }
 478 }
 479
 480 void Sky::update(float time_of_day, float time_brightness,
 481                 float direct_brightness, bool sunlight_seen,
 482                 CameraMode cam_mode, float yaw, float pitch)
 483 {
 484         // Stabilize initial brightness and color values by flooding updates
 485         if(m_first_update){
 486                 /*dstream<<"First update with time_of_day="<<time_of_day
 487                                 <<" time_brightness="<<time_brightness
 488                                 <<" direct_brightness="<<direct_brightness
 489                                 <<" sunlight_seen="<<sunlight_seen<<std::endl;*/
 490                 m_first_update = false;
 491                 for(u32 i=0; i<100; i++){
 492                         update(time_of_day, time_brightness, direct_brightness,
 493                                         sunlight_seen, cam_mode, yaw, pitch);
 494                 }
 495                 return;
 496         }
 497
 498         m_time_of_day = time_of_day;
 499         m_time_brightness = time_brightness;
 500         m_sunlight_seen = sunlight_seen;
 501
 502         bool is_dawn = (time_brightness >= 0.20 && time_brightness < 0.35);
 503
 504         //video::SColorf bgcolor_bright_normal_f(170./255,200./255,230./255, 1.0);
 505         video::SColorf bgcolor_bright_normal_f(155./255,193./255,240./255, 1.0);
 506         video::SColorf bgcolor_bright_indoor_f(100./255,100./255,100./255, 1.0);
 507         //video::SColorf bgcolor_bright_dawn_f(0.666,200./255*0.7,230./255*0.5,1.0);
 508         //video::SColorf bgcolor_bright_dawn_f(0.666,0.549,0.220,1.0);
 509         //video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.0, 1.0);
 510         //video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.2,1.0);
 511         video::SColorf bgcolor_bright_dawn_f
 512                         (155./255*1.2,193./255,240./255, 1.0);
 513         video::SColorf bgcolor_bright_night_f
 514                         (64./255, 144./255, 255./255, 1.0);
 515
 516         video::SColorf skycolor_bright_normal_f =
 517                         video::SColor(255, 140, 186, 250);
 518         video::SColorf skycolor_bright_dawn_f =
 519                         video::SColor(255, 180, 186, 250);
 520         video::SColorf skycolor_bright_night_f =
 521                         video::SColor(255, 0, 107, 255);
 522
 523         video::SColorf cloudcolor_bright_normal_f =
 524                         video::SColor(255, 240,240,255);
 525         //video::SColorf cloudcolor_bright_dawn_f(1.0, 0.591, 0.4);
 526         //video::SColorf cloudcolor_bright_dawn_f(1.0, 0.65, 0.44);
 527         //video::SColorf cloudcolor_bright_dawn_f(1.0, 0.7, 0.5);
 528         video::SColorf cloudcolor_bright_dawn_f(1.0, 0.875, 0.75);
 529
 530         float cloud_color_change_fraction = 0.95;
 531         if(sunlight_seen){
 532                 if(fabs(time_brightness - m_brightness) < 0.2){
 533                         m_brightness = m_brightness * 0.95 + time_brightness * 0.05;
 534                 } else {
 535                         m_brightness = m_brightness * 0.80 + time_brightness * 0.20;
 536                         cloud_color_change_fraction = 0.0;
 537                 }
 538         }
 539         else{
 540                 if(direct_brightness < m_brightness)
 541                         m_brightness = m_brightness * 0.95 + direct_brightness * 0.05;
 542                 else
 543                         m_brightness = m_brightness * 0.98 + direct_brightness * 0.02;
 544         }
 545
 546         m_clouds_visible = true;
 547         float color_change_fraction = 0.98;
 548         if(sunlight_seen){
 549                 if(is_dawn){
 550                         m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 551                                         bgcolor_bright_dawn_f, color_change_fraction);
 552                         m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 553                                         skycolor_bright_dawn_f, color_change_fraction);
 554                         m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 555                                         cloudcolor_bright_dawn_f, color_change_fraction);
 556                 } else {
 557                         if (time_brightness < 0.07) {  // Night sky
 558                                 m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 559                                                 bgcolor_bright_night_f, color_change_fraction);
 560                                 m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 561                                                 skycolor_bright_night_f, color_change_fraction);
 562                         } else {  // Daytime sky
 563                                 m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 564                                                 bgcolor_bright_normal_f, color_change_fraction);
 565                                 m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 566                                                 skycolor_bright_normal_f, color_change_fraction);
 567                         }
 568
 569                         m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 570                                         cloudcolor_bright_normal_f, color_change_fraction);
 571                 }
 572         } else {
 573                 m_bgcolor_bright_f = m_bgcolor_bright_f.getInterpolated(
 574                                 bgcolor_bright_indoor_f, color_change_fraction);
 575                 m_skycolor_bright_f = m_skycolor_bright_f.getInterpolated(
 576                                 bgcolor_bright_indoor_f, color_change_fraction);
 577                 m_cloudcolor_bright_f = m_cloudcolor_bright_f.getInterpolated(
 578                                 cloudcolor_bright_normal_f, color_change_fraction);
 579                 m_clouds_visible = false;
 580         }
 581
 582         video::SColor bgcolor_bright = m_bgcolor_bright_f.toSColor();
 583         m_bgcolor = video::SColor(
 584                 255,
 585                 bgcolor_bright.getRed() * m_brightness,
 586                 bgcolor_bright.getGreen() * m_brightness,
 587                 bgcolor_bright.getBlue() * m_brightness);
 588
 589         video::SColor skycolor_bright = m_skycolor_bright_f.toSColor();
 590         m_skycolor = video::SColor(
 591                 255,
 592                 skycolor_bright.getRed() * m_brightness,
 593                 skycolor_bright.getGreen() * m_brightness,
 594                 skycolor_bright.getBlue() * m_brightness);
 595
 596         // Horizon coloring based on sun and moon direction during sunset and sunrise
 597         video::SColor pointcolor = video::SColor(255, 255, 255, m_bgcolor.getAlpha());
 598         if (m_directional_colored_fog) {
 599                 if (m_horizon_blend() != 0)
 600                 {
 601                         // calculate hemisphere value from yaw, (inverted in third person front view)
 602                         s8 dir_factor = 1;
 603                         if (cam_mode > CAMERA_MODE_THIRD)
 604                                 dir_factor = -1;
 605                         f32 pointcolor_blend = wrapDegrees_0_360( yaw*dir_factor + 90);
 606                         if (pointcolor_blend > 180)
 607                                 pointcolor_blend = 360 - pointcolor_blend;
 608                         pointcolor_blend /= 180;
 609                         // bound view angle to determine where transition starts and ends
 610                         pointcolor_blend = rangelim(1 - pointcolor_blend * 1.375, 0, 1 / 1.375) * 1.375;
 611                         // combine the colors when looking up or down, otherwise turning looks weird
 612                         pointcolor_blend += (0.5 - pointcolor_blend) * (1 - MYMIN((90 - std::abs(pitch)) / 90 * 1.5, 1));
 613                         // invert direction to match where the sun and moon are rising
 614                         if (m_time_of_day > 0.5)
 615                                 pointcolor_blend = 1 - pointcolor_blend;
 616                         // horizon colors of sun and moon
 617                         f32 pointcolor_light = rangelim(m_time_brightness * 3, 0.2, 1);
 618
 619                         video::SColorf pointcolor_sun_f(1, 1, 1, 1);
 620                         if (m_sun_tonemap)
 621                         {
 622                                 pointcolor_sun_f.r = pointcolor_light * (float)m_materials[3].EmissiveColor.getRed() / 255;
 623                                 pointcolor_sun_f.b = pointcolor_light * (float)m_materials[3].EmissiveColor.getBlue() / 255;
 624                                 pointcolor_sun_f.g = pointcolor_light * (float)m_materials[3].EmissiveColor.getGreen() / 255;
 625                         }
 626                         else
 627                         {
 628                                 pointcolor_sun_f.r = pointcolor_light * 1;
 629                                 pointcolor_sun_f.b = pointcolor_light * (0.25 + (rangelim(m_time_brightness, 0.25, 0.75) - 0.25) * 2 * 0.75);
 630                                 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);
 631                         }
 632
 633                         video::SColorf pointcolor_moon_f(0.5 * pointcolor_light, 0.6 * pointcolor_light, 0.8 * pointcolor_light, 1);
 634                         if (m_moon_tonemap)
 635                         {
 636                                 pointcolor_moon_f.r = pointcolor_light * (float)m_materials[4].EmissiveColor.getRed() / 255;
 637                                 pointcolor_moon_f.b = pointcolor_light * (float)m_materials[4].EmissiveColor.getBlue() / 255;
 638                                 pointcolor_moon_f.g = pointcolor_light * (float)m_materials[4].EmissiveColor.getGreen() / 255;
 639                         }
 640
 641                         video::SColor pointcolor_sun = pointcolor_sun_f.toSColor();
 642                         video::SColor pointcolor_moon = pointcolor_moon_f.toSColor();
 643                         // calculate the blend color
 644                         pointcolor = m_mix_scolor(pointcolor_moon, pointcolor_sun, pointcolor_blend);
 645                 }
 646                 m_bgcolor = m_mix_scolor(m_bgcolor, pointcolor, m_horizon_blend() * 0.5);
 647                 m_skycolor = m_mix_scolor(m_skycolor, pointcolor, m_horizon_blend() * 0.25);
 648         }
 649
 650         float cloud_direct_brightness = 0;
 651         if(sunlight_seen) {
 652                 if (!m_directional_colored_fog) {
 653                         cloud_direct_brightness = time_brightness;
 654                         if(time_brightness >= 0.2 && time_brightness < 0.7)
 655                                 cloud_direct_brightness *= 1.3;
 656                 }
 657                 else {
 658                         cloud_direct_brightness = MYMIN(m_horizon_blend() * 0.15 + m_time_brightness, 1);
 659                 }
 660         } else {
 661                 cloud_direct_brightness = direct_brightness;
 662         }
 663         m_cloud_brightness = m_cloud_brightness * cloud_color_change_fraction +
 664                         cloud_direct_brightness * (1.0 - cloud_color_change_fraction);
 665         m_cloudcolor_f = video::SColorf(
 666                         m_cloudcolor_bright_f.r * m_cloud_brightness,
 667                         m_cloudcolor_bright_f.g * m_cloud_brightness,
 668                         m_cloudcolor_bright_f.b * m_cloud_brightness,
 669                         1.0);
 670         if (m_directional_colored_fog) {
 671                 m_cloudcolor_f = m_mix_scolorf(m_cloudcolor_f, video::SColorf(pointcolor), m_horizon_blend() * 0.25);
 672         }
 673
 674 }
 675
 676