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 #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, LocalPlayer* player):
  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                 m_player(player)
  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, mgr->getVideoDriver()->getTexture(
  51                         getTexturePath("sunrisebg.png").c_str()));
  52         m_materials[2].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  53         //m_materials[2].MaterialType = video::EMT_TRANSPARENT_ADD_COLOR;
  54
  55         m_sun_texture = mgr->getVideoDriver()->getTexture(
  56                         getTexturePath("sun.png").c_str());
  57         m_moon_texture = mgr->getVideoDriver()->getTexture(
  58                         getTexturePath("moon.png").c_str());
  59         m_sun_tonemap = mgr->getVideoDriver()->getTexture(
  60                         getTexturePath("sun_tonemap.png").c_str());
  61         m_moon_tonemap = mgr->getVideoDriver()->getTexture(
  62                         getTexturePath("moon_tonemap.png").c_str());
  63
  64         if (m_sun_texture){
  65                 m_materials[3] = mat;
  66                 m_materials[3].setTexture(0, m_sun_texture);
  67                 m_materials[3].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  68                 if (m_sun_tonemap)
  69                         m_materials[3].Lighting = true;
  70         }
  71         if (m_moon_texture){
  72                 m_materials[4] = mat;
  73                 m_materials[4].setTexture(0, m_moon_texture);
  74                 m_materials[4].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
  75                 if (m_moon_tonemap)
  76                         m_materials[4].Lighting = true;
  77         }
  78
  79         for(u32 i=0; i<SKY_STAR_COUNT; i++){
  80                 m_stars[i] = v3f(
  81                         myrand_range(-10000,10000),
  82                         myrand_range(-10000,10000),
  83                         myrand_range(-10000,10000)
  84                 );
  85                 m_stars[i].normalize();
  86         }
  87
  88         m_directional_colored_fog = g_settings->getBool("directional_colored_fog");
  89 }
  90
  91 void Sky::OnRegisterSceneNode()
  92 {
  93         if (IsVisible)
  94                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SKY_BOX);
  95
  96         scene::ISceneNode::OnRegisterSceneNode();
  97 }
  98
  99 const core::aabbox3d<f32>& Sky::getBoundingBox() const
 100 {
 101         return Box;
 102 }
 103
 104 //! renders the node.
 105 void Sky::render()
 106 {
 107         if(!m_visible)
 108                 return;
 109
 110         video::IVideoDriver* driver = SceneManager->getVideoDriver();
 111         scene::ICameraSceneNode* camera = SceneManager->getActiveCamera();
 112
 113         if (!camera || !driver)
 114                 return;
 115
 116         ScopeProfiler sp(g_profiler, "Sky::render()", SPT_AVG);
 117
 118         // draw perspective skybox
 119
 120         core::matrix4 translate(AbsoluteTransformation);
 121         translate.setTranslation(camera->getAbsolutePosition());
 122
 123         // Draw the sky box between the near and far clip plane
 124         const f32 viewDistance = (camera->getNearValue() + camera->getFarValue()) * 0.5f;
 125         core::matrix4 scale;
 126         scale.setScale(core::vector3df(viewDistance, viewDistance, viewDistance));
 127
 128         driver->setTransform(video::ETS_WORLD, translate * scale);
 129
 130         if(m_sunlight_seen)
 131         {
 132                 float sunsize = 0.07;
 133                 video::SColorf suncolor_f(1, 1, 0, 1);
 134                 suncolor_f.r = 1;
 135                 suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.7+m_time_brightness*(0.5)));
 136                 suncolor_f.b = MYMAX(0.0, m_brightness*0.95);
 137                 video::SColorf suncolor2_f(1, 1, 1, 1);
 138                 suncolor_f.r = 1;
 139                 suncolor_f.g = MYMAX(0.3, MYMIN(1.0, 0.85+m_time_brightness*(0.5)));
 140                 suncolor_f.b = MYMAX(0.0, m_brightness);
 141
 142                 float moonsize = 0.04;
 143                 video::SColorf mooncolor_f(0.50, 0.57, 0.65, 1);
 144                 video::SColorf mooncolor2_f(0.85, 0.875, 0.9, 1);
 145
 146                 float nightlength = 0.415;
 147                 float wn = nightlength / 2;
 148                 float wicked_time_of_day = 0;
 149                 if(m_time_of_day > wn && m_time_of_day < 1.0 - wn)
 150                         wicked_time_of_day = (m_time_of_day - wn)/(1.0-wn*2)*0.5 + 0.25;
 151                 else if(m_time_of_day < 0.5)
 152                         wicked_time_of_day = m_time_of_day / wn * 0.25;
 153                 else
 154                         wicked_time_of_day = 1.0 - ((1.0-m_time_of_day) / wn * 0.25);
 155                 /*std::cerr<<"time_of_day="<<m_time_of_day<<" -> "
 156                                 <<"wicked_time_of_day="<<wicked_time_of_day<<std::endl;*/
 157
 158                 video::SColor suncolor = suncolor_f.toSColor();
 159                 video::SColor suncolor2 = suncolor2_f.toSColor();
 160                 video::SColor mooncolor = mooncolor_f.toSColor();
 161                 video::SColor mooncolor2 = mooncolor2_f.toSColor();
 162
 163                 // Calculate offset normalized to the X dimension of a 512x1 px tonemap
 164                 float offset=(1.0-fabs(sin((m_time_of_day - 0.5)*irr::core::PI)))*511;
 165
 166                 if (m_sun_tonemap){
 167                         u8 * texels = (u8 *)m_sun_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_sun_tonemap->unlock();
 171                         m_materials[3].EmissiveColor = texel_color;
 172                 }
 173                 if (m_moon_tonemap){
 174                         u8 * texels = (u8 *)m_moon_tonemap->lock();
 175                         video::SColor* texel = (video::SColor *)(texels + (u32)offset * 4);
 176                         video::SColor texel_color (255,texel->getRed(),texel->getGreen(), texel->getBlue());
 177                         m_moon_tonemap->unlock();
 178                         m_materials[4].EmissiveColor = texel_color;
 179                 }
 180
 181                 const f32 t = 1.0f;
 182                 const f32 o = 0.0f;
 183                 static const u16 indices[4] = {0,1,2,3};
 184                 video::S3DVertex vertices[4];
 185
 186                 driver->setMaterial(m_materials[1]);
 187
 188                 //video::SColor cloudyfogcolor(255,255,255,255);
 189                 video::SColor cloudyfogcolor = m_bgcolor;
 190                 //video::SColor cloudyfogcolor = m_bgcolor.getInterpolated(m_skycolor, 0.5);
 191
 192                 // Draw far cloudy fog thing
 193                 for(u32 j=0; j<4; j++)
 194                 {
 195                         video::SColor c = cloudyfogcolor.getInterpolated(m_skycolor, 0.45);
 196                         vertices[0] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, t);
 197                         vertices[1] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, t);
 198                         vertices[2] = video::S3DVertex( 1, 0.12,-1, 0,0,1, c, o, o);
 199                         vertices[3] = video::S3DVertex(-1, 0.12,-1, 0,0,1, c, t, o);
 200                         for(u32 i=0; i<4; i++){
 201                                 if(j==0)
 202                                         // Don't switch
 203                                         {}
 204                                 else if(j==1)
 205                                         // Switch from -Z (south) to +X (east)
 206                                         vertices[i].Pos.rotateXZBy(90);
 207                                 else if(j==2)
 208                                         // Switch from -Z (south) to -X (west)
 209                                         vertices[i].Pos.rotateXZBy(-90);
 210                                 else
 211                                         // Switch from -Z (south) to -Z (north)
 212                                         vertices[i].Pos.rotateXZBy(-180);
 213                         }
 214                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 215                 }
 216                 for(u32 j=0; j<4; j++)
 217                 {
 218                         video::SColor c = cloudyfogcolor;
 219                         vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
 220                         vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
 221                         vertices[2] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, o);
 222                         vertices[3] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, o);
 223                         for(u32 i=0; i<4; i++){
 224                                 if(j==0)
 225                                         // Don't switch
 226                                         {}
 227                                 else if(j==1)
 228                                         // Switch from -Z (south) to +X (east)
 229                                         vertices[i].Pos.rotateXZBy(90);
 230                                 else if(j==2)
 231                                         // Switch from -Z (south) to -X (west)
 232                                         vertices[i].Pos.rotateXZBy(-90);
 233                                 else
 234                                         // Switch from -Z (south) to -Z (north)
 235                                         vertices[i].Pos.rotateXZBy(-180);
 236                         }
 237                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 238                 }
 239
 240                 driver->setMaterial(m_materials[2]);
 241
 242                 {
 243                         float mid1 = 0.25;
 244                         float mid = (wicked_time_of_day < 0.5 ? mid1 : (1.0 - mid1));
 245                         float a_ = 1.0 - fabs(wicked_time_of_day - mid) * 35.0;
 246                         float a = easeCurve(MYMAX(0, MYMIN(1, a_)));
 247                         //std::cerr<<"a_="<<a_<<" a="<<a<<std::endl;
 248                         video::SColor c(255,255,255,255);
 249                         float y = -(1.0 - a) * 0.2;
 250                         vertices[0] = video::S3DVertex(-1,-0.05+y,-1, 0,0,1, c, t, t);
 251                         vertices[1] = video::S3DVertex( 1,-0.05+y,-1, 0,0,1, c, o, t);
 252                         vertices[2] = video::S3DVertex( 1, 0.2+y,-1, 0,0,1, c, o, o);
 253                         vertices[3] = video::S3DVertex(-1, 0.2+y,-1, 0,0,1, c, t, o);
 254                         for(u32 i=0; i<4; i++){
 255                                 if(wicked_time_of_day < 0.5)
 256                                         // Switch from -Z (south) to +X (east)
 257                                         vertices[i].Pos.rotateXZBy(90);
 258                                 else
 259                                         // Switch from -Z (south) to -X (west)
 260                                         vertices[i].Pos.rotateXZBy(-90);
 261                         }
 262                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 263                 }
 264
 265                 // Draw sun
 266                 if(wicked_time_of_day > 0.15 && wicked_time_of_day < 0.85){
 267                         if (!m_sun_texture){
 268                                 driver->setMaterial(m_materials[1]);
 269                                 float d = sunsize * 1.7;
 270                                 video::SColor c = suncolor;
 271                                 c.setAlpha(0.05*255);
 272                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 273                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 274                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 275                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 276                                 for(u32 i=0; i<4; i++){
 277                                         // Switch from -Z (south) to +X (east)
 278                                         vertices[i].Pos.rotateXZBy(90);
 279                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 280                                 }
 281                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 282
 283                                 d = sunsize * 1.2;
 284                                 c = suncolor;
 285                                 c.setAlpha(0.15*255);
 286                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 287                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 288                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 289                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 290                                 for(u32 i=0; i<4; i++){
 291                                         // Switch from -Z (south) to +X (east)
 292                                         vertices[i].Pos.rotateXZBy(90);
 293                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 294                                 }
 295                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 296
 297                                 d = sunsize;
 298                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor, t, t);
 299                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor, o, t);
 300                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor, o, o);
 301                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor, t, o);
 302                                 for(u32 i=0; i<4; i++){
 303                                         // Switch from -Z (south) to +X (east)
 304                                         vertices[i].Pos.rotateXZBy(90);
 305                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 306                                 }
 307                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 308
 309                                 d = sunsize * 0.7;
 310                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor2, t, t);
 311                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor2, o, t);
 312                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor2, o, o);
 313                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor2, t, o);
 314                                 for(u32 i=0; i<4; i++){
 315                                         // Switch from -Z (south) to +X (east)
 316                                         vertices[i].Pos.rotateXZBy(90);
 317                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 318                                 }
 319                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 320                         } else {
 321                                 driver->setMaterial(m_materials[3]);
 322                                 float d = sunsize * 1.7;
 323                                 video::SColor c;
 324                                 if (m_sun_tonemap)
 325                                         c = video::SColor (0,0,0,0);
 326                                 else
 327                                         c = video::SColor (255,255,255,255);
 328                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 329                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 330                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 331                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 332                                 for(u32 i=0; i<4; i++){
 333                                         // Switch from -Z (south) to +X (east)
 334                                         vertices[i].Pos.rotateXZBy(90);
 335                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 336                                 }
 337                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 338                         }
 339                 }
 340
 341                 // Draw moon
 342                 if(wicked_time_of_day < 0.3 || wicked_time_of_day > 0.7)
 343                 {
 344                         if (!m_moon_texture){
 345                                 driver->setMaterial(m_materials[1]);
 346                                 float d = moonsize * 1.9;
 347                                 video::SColor c = mooncolor;
 348                                 c.setAlpha(0.05*255);
 349                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 350                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 351                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 352                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 353                                 for(u32 i=0; i<4; i++){
 354                                         // Switch from -Z (south) to -X (west)
 355                                         vertices[i].Pos.rotateXZBy(-90);
 356                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 357                                 }
 358                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 359
 360                                 d = moonsize * 1.3;
 361                                 c = mooncolor;
 362                                 c.setAlpha(0.15*255);
 363                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 364                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 365                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 366                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 367                                 for(u32 i=0; i<4; i++){
 368                                         // Switch from -Z (south) to -X (west)
 369                                         vertices[i].Pos.rotateXZBy(-90);
 370                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 371                                 }
 372                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 373
 374                                 d = moonsize;
 375                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor, t, t);
 376                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, mooncolor, o, t);
 377                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, mooncolor, o, o);
 378                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, mooncolor, t, o);
 379                                 for(u32 i=0; i<4; i++){
 380                                         // Switch from -Z (south) to -X (west)
 381                                         vertices[i].Pos.rotateXZBy(-90);
 382                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 383                                 }
 384                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 385
 386                                 float d2 = moonsize * 0.6;
 387                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor2, t, t);
 388                                 vertices[1] = video::S3DVertex( d2,-d,-1, 0,0,1, mooncolor2, o, t);
 389                                 vertices[2] = video::S3DVertex( d2, d2,-1, 0,0,1, mooncolor2, o, o);
 390                                 vertices[3] = video::S3DVertex(-d, d2,-1, 0,0,1, mooncolor2, t, o);
 391                                 for(u32 i=0; i<4; i++){
 392                                         // Switch from -Z (south) to -X (west)
 393                                         vertices[i].Pos.rotateXZBy(-90);
 394                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 395                                 }
 396                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 397                         } else {
 398                                 driver->setMaterial(m_materials[4]);
 399                                 float d = moonsize * 1.9;
 400                                 video::SColor c;
 401                                 if (m_moon_tonemap)
 402                                         c = video::SColor (0,0,0,0);
 403                                 else
 404                                         c = video::SColor (255,255,255,255);
 405                                 vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
 406                                 vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
 407                                 vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
 408                                 vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
 409                                 for(u32 i=0; i<4; i++){
 410                                         // Switch from -Z (south) to -X (west)
 411                                         vertices[i].Pos.rotateXZBy(-90);
 412                                         vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
 413                                 }
 414                                 driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 415                         }
 416                 }
 417
 418                 // Stars
 419                 driver->setMaterial(m_materials[1]);
 420                 do{
 421                         float starbrightness = MYMAX(0, MYMIN(1,
 422                                         (0.285 - fabs(wicked_time_of_day < 0.5 ?
 423                                         wicked_time_of_day : (1.0 - wicked_time_of_day))) * 10));
 424                         float f = starbrightness;
 425                         float d = 0.007;
 426                         video::SColor starcolor(255, f*90,f*90,f*90);
 427                         if(starcolor.getBlue() < m_skycolor.getBlue())
 428                                 break;
 429                         u16 indices[SKY_STAR_COUNT*4];
 430                         video::S3DVertex vertices[SKY_STAR_COUNT*4];
 431                         for(u32 i=0; i<SKY_STAR_COUNT; i++){
 432                                 indices[i*4+0] = i*4+0;
 433                                 indices[i*4+1] = i*4+1;
 434                                 indices[i*4+2] = i*4+2;
 435                                 indices[i*4+3] = i*4+3;
 436                                 v3f p = m_stars[i];
 437                                 core::CMatrix4<f32> a;
 438                                 a.buildRotateFromTo(v3f(0,1,0), v3f(d,1+d/2,0));
 439                                 v3f p1 = p;
 440                                 a.rotateVect(p1);
 441                                 a.buildRotateFromTo(v3f(0,1,0), v3f(d,1,d));
 442                                 v3f p2 = p;
 443                                 a.rotateVect(p2);
 444                                 a.buildRotateFromTo(v3f(0,1,0), v3f(0,1-d/2,d));
 445                                 v3f p3 = p;
 446                                 a.rotateVect(p3);
 447                                 p.rotateXYBy(wicked_time_of_day * 360 - 90);
 448                                 p1.rotateXYBy(wicked_time_of_day * 360 - 90);
 449                                 p2.rotateXYBy(wicked_time_of_day * 360 - 90);
 450                                 p3.rotateXYBy(wicked_time_of_day * 360 - 90);
 451                                 vertices[i*4+0].Pos = p;
 452                                 vertices[i*4+0].Color = starcolor;
 453                                 vertices[i*4+1].Pos = p1;
 454                                 vertices[i*4+1].Color = starcolor;
 455                                 vertices[i*4+2].Pos = p2;
 456                                 vertices[i*4+2].Color = starcolor;
 457                                 vertices[i*4+3].Pos = p3;
 458                                 vertices[i*4+3].Color = starcolor;
 459                         }
 460                         driver->drawVertexPrimitiveList(vertices, SKY_STAR_COUNT*4,
 461                                         indices, SKY_STAR_COUNT, video::EVT_STANDARD,
 462                                         scene::EPT_QUADS, video::EIT_16BIT);
 463                 }while(0);
 464
 465                 for(u32 j=0; j<2; j++)
 466                 {
 467                         //video::SColor c = m_skycolor;
 468                         video::SColor c = cloudyfogcolor;
 469                         vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
 470                         vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
 471                         vertices[2] = video::S3DVertex( 1,-0.02,-1, 0,0,1, c, o, o);
 472                         vertices[3] = video::S3DVertex(-1,-0.02,-1, 0,0,1, c, t, o);
 473                         for(u32 i=0; i<4; i++){
 474                                 //if(wicked_time_of_day < 0.5)
 475                                 if(j==0)
 476                                         // Switch from -Z (south) to +X (east)
 477                                         vertices[i].Pos.rotateXZBy(90);
 478                                 else
 479                                         // Switch from -Z (south) to -X (west)
 480                                         vertices[i].Pos.rotateXZBy(-90);
 481                         }
 482                         driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
 483                 }
 484         }
 485 }
 486
 487 void Sky::update(float time_of_day, float time_brightness,
 488                 float direct_brightness, bool sunlight_seen)
 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);
 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         // Horizon coloring based on sun and moon direction during sunset and sunrise
 577         video::SColor pointcolor = video::SColor(255, 255, 255, m_bgcolor.getAlpha());
 578         if (m_directional_colored_fog) {
 579                 if (m_horizon_blend() != 0)
 580                 {
 581                         // calculate hemisphere value from yaw, (inverted in third person front view)
 582                         s8 dir_factor = 1;
 583                         if (m_player->camera_mode > CAMERA_MODE_THIRD)
 584                                 dir_factor = -1;
 585                         f32 pointcolor_blend = wrapDegrees_0_360(m_player->getYaw()*dir_factor + 90);
 586                         if (pointcolor_blend > 180)
 587                                 pointcolor_blend = 360 - pointcolor_blend;
 588                         pointcolor_blend /= 180;
 589                         // bound view angle to determine where transition starts and ends
 590                         pointcolor_blend = rangelim(1 - pointcolor_blend * 1.375, 0, 1 / 1.375) * 1.375;
 591                         // combine the colors when looking up or down, otherwise turning looks weird
 592                         pointcolor_blend += (0.5 - pointcolor_blend) * (1 - MYMIN((90 - std::abs(m_player->getPitch())) / 90 * 1.5, 1));
 593                         // invert direction to match where the sun and moon are rising
 594                         if (m_time_of_day > 0.5)
 595                                 pointcolor_blend = 1 - pointcolor_blend;
 596
 597                         // horizon colors of sun and moon
 598                         f32 pointcolor_light = rangelim(m_time_brightness * 3, 0.2, 1);
 599                         video::SColorf pointcolor_sun_f(1, 1, 1, 1);
 600                         pointcolor_sun_f.r = pointcolor_light * 1;
 601                         pointcolor_sun_f.b = pointcolor_light * (0.25 + (rangelim(m_time_brightness, 0.25, 0.75) - 0.25) * 2 * 0.75);
 602                         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);
 603                         video::SColorf pointcolor_moon_f(0.5 * pointcolor_light, 0.6 * pointcolor_light, 0.8 * pointcolor_light, 1);
 604                         video::SColor pointcolor_sun = pointcolor_sun_f.toSColor();
 605                         video::SColor pointcolor_moon = pointcolor_moon_f.toSColor();
 606                         // calculate the blend color
 607                         pointcolor = m_mix_scolor(pointcolor_moon, pointcolor_sun, pointcolor_blend);
 608                 }
 609         }
 610
 611         video::SColor bgcolor_bright = m_bgcolor_bright_f.toSColor();
 612         m_bgcolor = video::SColor(
 613                 255,
 614                 bgcolor_bright.getRed() * m_brightness,
 615                 bgcolor_bright.getGreen() * m_brightness,
 616                 bgcolor_bright.getBlue() * m_brightness);
 617         if (m_directional_colored_fog) {
 618                 m_bgcolor = m_mix_scolor(m_bgcolor, pointcolor, m_horizon_blend() * 0.5);
 619         }
 620
 621         video::SColor skycolor_bright = m_skycolor_bright_f.toSColor();
 622         m_skycolor = video::SColor(
 623                 255,
 624                 skycolor_bright.getRed() * m_brightness,
 625                 skycolor_bright.getGreen() * m_brightness,
 626                 skycolor_bright.getBlue() * m_brightness);
 627         if (m_directional_colored_fog) {
 628                 m_skycolor = m_mix_scolor(m_skycolor, pointcolor, m_horizon_blend() * 0.25);
 629         }
 630
 631         float cloud_direct_brightness = 0;
 632         if(sunlight_seen) {
 633                 if (!m_directional_colored_fog) {
 634                         cloud_direct_brightness = time_brightness;
 635                         if(time_brightness >= 0.2 && time_brightness < 0.7)
 636                                 cloud_direct_brightness *= 1.3;
 637                 }
 638                 else {
 639                         cloud_direct_brightness = MYMIN(m_horizon_blend() * 0.15 + m_time_brightness, 1);
 640                 }
 641         } else {
 642                 cloud_direct_brightness = direct_brightness;
 643         }
 644         m_cloud_brightness = m_cloud_brightness * cloud_color_change_fraction +
 645                         cloud_direct_brightness * (1.0 - cloud_color_change_fraction);
 646         m_cloudcolor_f = video::SColorf(
 647                         m_cloudcolor_bright_f.r * m_cloud_brightness,
 648                         m_cloudcolor_bright_f.g * m_cloud_brightness,
 649                         m_cloudcolor_bright_f.b * m_cloud_brightness,
 650                         1.0);
 651         if (m_directional_colored_fog) {
 652                 m_cloudcolor_f = m_mix_scolorf(m_cloudcolor_f, video::SColorf(pointcolor), m_horizon_blend() * 0.25);
 653         }
 654
 655 }
 656
 657