src/content_mapblock.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "content_mapblock.h"
  21
  22 #include "main.h" // For g_settings
  23 #include "mapblock_mesh.h" // For MapBlock_LightColor() and MeshCollector
  24 #include "settings.h"
  25 #include "nodedef.h"
  26 #include "tile.h"
  27 #include "gamedef.h"
  28
  29 // Create a cuboid.
  30 //  collector - the MeshCollector for the resulting polygons
  31 //  box       - the position and size of the box
  32 //  materials - the materials to use (for all 6 faces)
  33 //  pa        - texture atlas pointers for the materials
  34 //  matcount  - number of entries in "materials" and "pa", 1<=matcount<=6
  35 //  c         - vertex colour - used for all
  36 //  txc       - texture coordinates - this is a list of texture coordinates
  37 //              for the opposite corners of each face - therefore, there
  38 //              should be (2+2)*6=24 values in the list. Alternatively, pass
  39 //              NULL to use the entire texture for each face. The order of
  40 //              the faces in the list is up-down-right-left-back-front
  41 //              (compatible with ContentFeatures). If you specified 0,0,1,1
  42 //              for each face, that would be the same as passing NULL.
  43 void makeCuboid(MeshCollector *collector, const aabb3f &box,
  44         const video::SMaterial *materials, const AtlasPointer *pa, int matcount,
  45         video::SColor &c, const f32* txc)
  46 {
  47         assert(matcount >= 1);
  48
  49         v3f min = box.MinEdge;
  50         v3f max = box.MaxEdge;
  51
  52         if(txc == NULL)
  53         {
  54                 static const f32 txc_default[24] = {
  55                         0,0,1,1,
  56                         0,0,1,1,
  57                         0,0,1,1,
  58                         0,0,1,1,
  59                         0,0,1,1,
  60                         0,0,1,1
  61                 };
  62                 txc = txc_default;
  63         }
  64
  65         video::S3DVertex vertices[24] =
  66         {
  67                 // up
  68                 video::S3DVertex(min.X,max.Y,max.Z, 0,1,0, c, txc[0],txc[1]),
  69                 video::S3DVertex(max.X,max.Y,max.Z, 0,1,0, c, txc[2],txc[1]),
  70                 video::S3DVertex(max.X,max.Y,min.Z, 0,1,0, c, txc[2],txc[3]),
  71                 video::S3DVertex(min.X,max.Y,min.Z, 0,1,0, c, txc[0],txc[3]),
  72                 // down
  73                 video::S3DVertex(min.X,min.Y,min.Z, 0,-1,0, c, txc[4],txc[5]),
  74                 video::S3DVertex(max.X,min.Y,min.Z, 0,-1,0, c, txc[6],txc[5]),
  75                 video::S3DVertex(max.X,min.Y,max.Z, 0,-1,0, c, txc[6],txc[7]),
  76                 video::S3DVertex(min.X,min.Y,max.Z, 0,-1,0, c, txc[4],txc[7]),
  77                 // right
  78                 video::S3DVertex(max.X,max.Y,min.Z, 1,0,0, c, txc[ 8],txc[9]),
  79                 video::S3DVertex(max.X,max.Y,max.Z, 1,0,0, c, txc[10],txc[9]),
  80                 video::S3DVertex(max.X,min.Y,max.Z, 1,0,0, c, txc[10],txc[11]),
  81                 video::S3DVertex(max.X,min.Y,min.Z, 1,0,0, c, txc[ 8],txc[11]),
  82                 // left
  83                 video::S3DVertex(min.X,max.Y,max.Z, -1,0,0, c, txc[12],txc[13]),
  84                 video::S3DVertex(min.X,max.Y,min.Z, -1,0,0, c, txc[14],txc[13]),
  85                 video::S3DVertex(min.X,min.Y,min.Z, -1,0,0, c, txc[14],txc[15]),
  86                 video::S3DVertex(min.X,min.Y,max.Z, -1,0,0, c, txc[12],txc[15]),
  87                 // back
  88                 video::S3DVertex(max.X,max.Y,max.Z, 0,0,1, c, txc[16],txc[17]),
  89                 video::S3DVertex(min.X,max.Y,max.Z, 0,0,1, c, txc[18],txc[17]),
  90                 video::S3DVertex(min.X,min.Y,max.Z, 0,0,1, c, txc[18],txc[19]),
  91                 video::S3DVertex(max.X,min.Y,max.Z, 0,0,1, c, txc[16],txc[19]),
  92                 // front
  93                 video::S3DVertex(min.X,max.Y,min.Z, 0,0,-1, c, txc[20],txc[21]),
  94                 video::S3DVertex(max.X,max.Y,min.Z, 0,0,-1, c, txc[22],txc[21]),
  95                 video::S3DVertex(max.X,min.Y,min.Z, 0,0,-1, c, txc[22],txc[23]),
  96                 video::S3DVertex(min.X,min.Y,min.Z, 0,0,-1, c, txc[20],txc[23]),
  97         };
  98
  99         for(s32 j=0; j<24; j++)
 100         {
 101                 int matindex = MYMIN(j/4, matcount-1);
 102                 vertices[j].TCoords *= pa[matindex].size;
 103                 vertices[j].TCoords += pa[matindex].pos;
 104         }
 105
 106         u16 indices[] = {0,1,2,2,3,0};
 107
 108         // Add to mesh collector
 109         for(s32 j=0; j<24; j+=4)
 110         {
 111                 int matindex = MYMIN(j/4, matcount-1);
 112                 collector->append(materials[matindex],
 113                                 vertices+j, 4, indices, 6);
 114         }
 115 }
 116
 117 void mapblock_mesh_generate_special(MeshMakeData *data,
 118                 MeshCollector &collector, IGameDef *gamedef)
 119 {
 120         INodeDefManager *nodedef = gamedef->ndef();
 121         ITextureSource *tsrc = gamedef->getTextureSource();
 122
 123         // 0ms
 124         //TimeTaker timer("mapblock_mesh_generate_special()");
 125
 126         /*
 127                 Some settings
 128         */
 129         bool new_style_water = g_settings->getBool("new_style_water");
 130
 131         float node_liquid_level = 1.0;
 132         if(new_style_water)
 133                 node_liquid_level = 0.85;
 134
 135         v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;
 136
 137         /*// General ground material for special output
 138         // Texture is modified just before usage
 139         video::SMaterial material_general;
 140         material_general.setFlag(video::EMF_LIGHTING, false);
 141         material_general.setFlag(video::EMF_BILINEAR_FILTER, false);
 142         material_general.setFlag(video::EMF_FOG_ENABLE, true);
 143         material_general.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;*/
 144
 145         for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 146         for(s16 y=0; y<MAP_BLOCKSIZE; y++)
 147         for(s16 x=0; x<MAP_BLOCKSIZE; x++)
 148         {
 149                 v3s16 p(x,y,z);
 150
 151                 MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes+p);
 152                 const ContentFeatures &f = nodedef->get(n);
 153
 154                 // Only solidness=0 stuff is drawn here
 155                 if(f.solidness != 0)
 156                         continue;
 157
 158                 switch(f.drawtype){
 159                 default:
 160                         infostream<<"Got "<<f.drawtype<<std::endl;
 161                         assert(0);
 162                         break;
 163                 case NDT_AIRLIKE:
 164                         break;
 165                 case NDT_LIQUID:
 166                 {
 167                         /*
 168                                 Add water sources to mesh if using new style
 169                         */
 170                         assert(nodedef->get(n).special_materials[0]);
 171                         //assert(nodedef->get(n).special_materials[1]);
 172                         assert(nodedef->get(n).special_aps[0]);
 173
 174                         video::SMaterial &liquid_material =
 175                                         *nodedef->get(n).special_materials[0];
 176                         /*video::SMaterial &liquid_material_bfculled =
 177                                         *nodedef->get(n).special_materials[1];*/
 178                         AtlasPointer &pa_liquid1 =
 179                                         *nodedef->get(n).special_aps[0];
 180
 181                         bool top_is_air = false;
 182                         MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 183                         if(n.getContent() == CONTENT_AIR)
 184                                 top_is_air = true;
 185
 186                         if(top_is_air == false)
 187                                 continue;
 188
 189                         u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio, nodedef));
 190                         video::SColor c = MapBlock_LightColor(
 191                                         nodedef->get(n).alpha, l);
 192
 193                         video::S3DVertex vertices[4] =
 194                         {
 195                                 video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 196                                                 pa_liquid1.x0(), pa_liquid1.y1()),
 197                                 video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 198                                                 pa_liquid1.x1(), pa_liquid1.y1()),
 199                                 video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 200                                                 pa_liquid1.x1(), pa_liquid1.y0()),
 201                                 video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 202                                                 pa_liquid1.x0(), pa_liquid1.y0()),
 203                         };
 204
 205                         for(s32 i=0; i<4; i++)
 206                         {
 207                                 vertices[i].Pos.Y += (-0.5+node_liquid_level)*BS;
 208                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 209                         }
 210
 211                         u16 indices[] = {0,1,2,2,3,0};
 212                         // Add to mesh collector
 213                         collector.append(liquid_material, vertices, 4, indices, 6);
 214                 break;}
 215                 case NDT_FLOWINGLIQUID:
 216                 {
 217                         /*
 218                                 Add flowing liquid to mesh
 219                         */
 220                         assert(nodedef->get(n).special_materials[0]);
 221                         assert(nodedef->get(n).special_materials[1]);
 222                         assert(nodedef->get(n).special_aps[0]);
 223
 224                         video::SMaterial &liquid_material =
 225                                         *nodedef->get(n).special_materials[0];
 226                         video::SMaterial &liquid_material_bfculled =
 227                                         *nodedef->get(n).special_materials[1];
 228                         AtlasPointer &pa_liquid1 =
 229                                         *nodedef->get(n).special_aps[0];
 230
 231                         bool top_is_same_liquid = false;
 232                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 233                         content_t c_flowing = nodedef->getId(nodedef->get(n).liquid_alternative_flowing);
 234                         content_t c_source = nodedef->getId(nodedef->get(n).liquid_alternative_source);
 235                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 236                                 top_is_same_liquid = true;
 237
 238                         u8 l = 0;
 239                         // Use the light of the node on top if possible
 240                         if(nodedef->get(ntop).param_type == CPT_LIGHT)
 241                                 l = decode_light(ntop.getLightBlend(data->m_daynight_ratio, nodedef));
 242                         // Otherwise use the light of this node (the liquid)
 243                         else
 244                                 l = decode_light(n.getLightBlend(data->m_daynight_ratio, nodedef));
 245                         video::SColor c = MapBlock_LightColor(
 246                                         nodedef->get(n).alpha, l);
 247
 248                         // Neighbor liquid levels (key = relative position)
 249                         // Includes current node
 250                         core::map<v3s16, f32> neighbor_levels;
 251                         core::map<v3s16, content_t> neighbor_contents;
 252                         core::map<v3s16, u8> neighbor_flags;
 253                         const u8 neighborflag_top_is_same_liquid = 0x01;
 254                         v3s16 neighbor_dirs[9] = {
 255                                 v3s16(0,0,0),
 256                                 v3s16(0,0,1),
 257                                 v3s16(0,0,-1),
 258                                 v3s16(1,0,0),
 259                                 v3s16(-1,0,0),
 260                                 v3s16(1,0,1),
 261                                 v3s16(-1,0,-1),
 262                                 v3s16(1,0,-1),
 263                                 v3s16(-1,0,1),
 264                         };
 265                         for(u32 i=0; i<9; i++)
 266                         {
 267                                 content_t content = CONTENT_AIR;
 268                                 float level = -0.5 * BS;
 269                                 u8 flags = 0;
 270                                 // Check neighbor
 271                                 v3s16 p2 = p + neighbor_dirs[i];
 272                                 MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 273                                 if(n2.getContent() != CONTENT_IGNORE)
 274                                 {
 275                                         content = n2.getContent();
 276
 277                                         if(n2.getContent() == c_source)
 278                                                 level = (-0.5+node_liquid_level) * BS;
 279                                         else if(n2.getContent() == c_flowing)
 280                                                 level = (-0.5 + ((float)(n2.param2&LIQUID_LEVEL_MASK)
 281                                                                 + 0.5) / 8.0 * node_liquid_level) * BS;
 282
 283                                         // Check node above neighbor.
 284                                         // NOTE: This doesn't get executed if neighbor
 285                                         //       doesn't exist
 286                                         p2.Y += 1;
 287                                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 288                                         if(n2.getContent() == c_source ||
 289                                                         n2.getContent() == c_flowing)
 290                                                 flags |= neighborflag_top_is_same_liquid;
 291                                 }
 292
 293                                 neighbor_levels.insert(neighbor_dirs[i], level);
 294                                 neighbor_contents.insert(neighbor_dirs[i], content);
 295                                 neighbor_flags.insert(neighbor_dirs[i], flags);
 296                         }
 297
 298                         // Corner heights (average between four liquids)
 299                         f32 corner_levels[4];
 300
 301                         v3s16 halfdirs[4] = {
 302                                 v3s16(0,0,0),
 303                                 v3s16(1,0,0),
 304                                 v3s16(1,0,1),
 305                                 v3s16(0,0,1),
 306                         };
 307                         for(u32 i=0; i<4; i++)
 308                         {
 309                                 v3s16 cornerdir = halfdirs[i];
 310                                 float cornerlevel = 0;
 311                                 u32 valid_count = 0;
 312                                 u32 air_count = 0;
 313                                 for(u32 j=0; j<4; j++)
 314                                 {
 315                                         v3s16 neighbordir = cornerdir - halfdirs[j];
 316                                         content_t content = neighbor_contents[neighbordir];
 317                                         // If top is liquid, draw starting from top of node
 318                                         if(neighbor_flags[neighbordir] &
 319                                                         neighborflag_top_is_same_liquid)
 320                                         {
 321                                                 cornerlevel = 0.5*BS;
 322                                                 valid_count = 1;
 323                                                 break;
 324                                         }
 325                                         // Source is always the same height
 326                                         else if(content == c_source)
 327                                         {
 328                                                 cornerlevel = (-0.5+node_liquid_level)*BS;
 329                                                 valid_count = 1;
 330                                                 break;
 331                                         }
 332                                         // Flowing liquid has level information
 333                                         else if(content == c_flowing)
 334                                         {
 335                                                 cornerlevel += neighbor_levels[neighbordir];
 336                                                 valid_count++;
 337                                         }
 338                                         else if(content == CONTENT_AIR)
 339                                         {
 340                                                 air_count++;
 341                                         }
 342                                 }
 343                                 if(air_count >= 2)
 344                                         cornerlevel = -0.5*BS;
 345                                 else if(valid_count > 0)
 346                                         cornerlevel /= valid_count;
 347                                 corner_levels[i] = cornerlevel;
 348                         }
 349
 350                         /*
 351                                 Generate sides
 352                         */
 353
 354                         v3s16 side_dirs[4] = {
 355                                 v3s16(1,0,0),
 356                                 v3s16(-1,0,0),
 357                                 v3s16(0,0,1),
 358                                 v3s16(0,0,-1),
 359                         };
 360                         s16 side_corners[4][2] = {
 361                                 {1, 2},
 362                                 {3, 0},
 363                                 {2, 3},
 364                                 {0, 1},
 365                         };
 366                         for(u32 i=0; i<4; i++)
 367                         {
 368                                 v3s16 dir = side_dirs[i];
 369
 370                                 /*
 371                                         If our topside is liquid and neighbor's topside
 372                                         is liquid, don't draw side face
 373                                 */
 374                                 if(top_is_same_liquid &&
 375                                                 neighbor_flags[dir] & neighborflag_top_is_same_liquid)
 376                                         continue;
 377
 378                                 content_t neighbor_content = neighbor_contents[dir];
 379                                 const ContentFeatures &n_feat = nodedef->get(neighbor_content);
 380
 381                                 // Don't draw face if neighbor is blocking the view
 382                                 if(n_feat.solidness == 2)
 383                                         continue;
 384
 385                                 bool neighbor_is_same_liquid = (neighbor_content == c_source
 386                                                 || neighbor_content == c_flowing);
 387
 388                                 // Don't draw any faces if neighbor same is liquid and top is
 389                                 // same liquid
 390                                 if(neighbor_is_same_liquid == true
 391                                                 && top_is_same_liquid == false)
 392                                         continue;
 393
 394                                 // Use backface culled material if neighbor doesn't have a
 395                                 // solidness of 0
 396                                 video::SMaterial *current_material = &liquid_material;
 397                                 if(n_feat.solidness != 0 || n_feat.visual_solidness != 0)
 398                                         current_material = &liquid_material_bfculled;
 399
 400                                 video::S3DVertex vertices[4] =
 401                                 {
 402                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 403                                                         pa_liquid1.x0(), pa_liquid1.y1()),
 404                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 405                                                         pa_liquid1.x1(), pa_liquid1.y1()),
 406                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 407                                                         pa_liquid1.x1(), pa_liquid1.y0()),
 408                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 409                                                         pa_liquid1.x0(), pa_liquid1.y0()),
 410                                 };
 411
 412                                 /*
 413                                         If our topside is liquid, set upper border of face
 414                                         at upper border of node
 415                                 */
 416                                 if(top_is_same_liquid)
 417                                 {
 418                                         vertices[2].Pos.Y = 0.5*BS;
 419                                         vertices[3].Pos.Y = 0.5*BS;
 420                                 }
 421                                 /*
 422                                         Otherwise upper position of face is corner levels
 423                                 */
 424                                 else
 425                                 {
 426                                         vertices[2].Pos.Y = corner_levels[side_corners[i][0]];
 427                                         vertices[3].Pos.Y = corner_levels[side_corners[i][1]];
 428                                 }
 429
 430                                 /*
 431                                         If neighbor is liquid, lower border of face is corner
 432                                         liquid levels
 433                                 */
 434                                 if(neighbor_is_same_liquid)
 435                                 {
 436                                         vertices[0].Pos.Y = corner_levels[side_corners[i][1]];
 437                                         vertices[1].Pos.Y = corner_levels[side_corners[i][0]];
 438                                 }
 439                                 /*
 440                                         If neighbor is not liquid, lower border of face is
 441                                         lower border of node
 442                                 */
 443                                 else
 444                                 {
 445                                         vertices[0].Pos.Y = -0.5*BS;
 446                                         vertices[1].Pos.Y = -0.5*BS;
 447                                 }
 448
 449                                 for(s32 j=0; j<4; j++)
 450                                 {
 451                                         if(dir == v3s16(0,0,1))
 452                                                 vertices[j].Pos.rotateXZBy(0);
 453                                         if(dir == v3s16(0,0,-1))
 454                                                 vertices[j].Pos.rotateXZBy(180);
 455                                         if(dir == v3s16(-1,0,0))
 456                                                 vertices[j].Pos.rotateXZBy(90);
 457                                         if(dir == v3s16(1,0,-0))
 458                                                 vertices[j].Pos.rotateXZBy(-90);
 459
 460                                         // Do this to not cause glitches when two liquids are
 461                                         // side-by-side
 462                                         /*if(neighbor_is_same_liquid == false){
 463                                                 vertices[j].Pos.X *= 0.98;
 464                                                 vertices[j].Pos.Z *= 0.98;
 465                                         }*/
 466
 467                                         vertices[j].Pos += intToFloat(p + blockpos_nodes, BS);
 468                                 }
 469
 470                                 u16 indices[] = {0,1,2,2,3,0};
 471                                 // Add to mesh collector
 472                                 collector.append(*current_material, vertices, 4, indices, 6);
 473                         }
 474
 475                         /*
 476                                 Generate top side, if appropriate
 477                         */
 478
 479                         if(top_is_same_liquid == false)
 480                         {
 481                                 video::S3DVertex vertices[4] =
 482                                 {
 483                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 484                                                         pa_liquid1.x0(), pa_liquid1.y1()),
 485                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 486                                                         pa_liquid1.x1(), pa_liquid1.y1()),
 487                                         video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 488                                                         pa_liquid1.x1(), pa_liquid1.y0()),
 489                                         video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 490                                                         pa_liquid1.x0(), pa_liquid1.y0()),
 491                                 };
 492
 493                                 // This fixes a strange bug
 494                                 s32 corner_resolve[4] = {3,2,1,0};
 495
 496                                 for(s32 i=0; i<4; i++)
 497                                 {
 498                                         //vertices[i].Pos.Y += liquid_level;
 499                                         //vertices[i].Pos.Y += neighbor_levels[v3s16(0,0,0)];
 500                                         s32 j = corner_resolve[i];
 501                                         vertices[i].Pos.Y += corner_levels[j];
 502                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 503                                 }
 504
 505                                 u16 indices[] = {0,1,2,2,3,0};
 506                                 // Add to mesh collector
 507                                 collector.append(liquid_material, vertices, 4, indices, 6);
 508                         }
 509                 break;}
 510                 case NDT_GLASSLIKE:
 511                 {
 512                         video::SMaterial material_glass;
 513                         material_glass.setFlag(video::EMF_LIGHTING, false);
 514                         material_glass.setFlag(video::EMF_BILINEAR_FILTER, false);
 515                         material_glass.setFlag(video::EMF_FOG_ENABLE, true);
 516                         material_glass.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 517                         TileSpec tile_glass = getNodeTile(n, p, v3s16(0,0,0),
 518                                         &data->m_temp_mods, tsrc, nodedef);
 519                         AtlasPointer pa_glass = tile_glass.texture;
 520                         material_glass.setTexture(0, pa_glass.atlas);
 521
 522                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio, nodedef)));
 523                         video::SColor c = MapBlock_LightColor(255, l);
 524
 525                         for(u32 j=0; j<6; j++)
 526                         {
 527                                 // Check this neighbor
 528                                 v3s16 n2p = blockpos_nodes + p + g_6dirs[j];
 529                                 MapNode n2 = data->m_vmanip.getNodeNoEx(n2p);
 530                                 // Don't make face if neighbor is of same type
 531                                 if(n2.getContent() == n.getContent())
 532                                         continue;
 533
 534                                 // The face at Z+
 535                                 video::S3DVertex vertices[4] =
 536                                 {
 537                                         video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c,
 538                                                 pa_glass.x0(), pa_glass.y1()),
 539                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c,
 540                                                 pa_glass.x1(), pa_glass.y1()),
 541                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c,
 542                                                 pa_glass.x1(), pa_glass.y0()),
 543                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c,
 544                                                 pa_glass.x0(), pa_glass.y0()),
 545                                 };
 546
 547                                 // Rotations in the g_6dirs format
 548                                 if(j == 0) // Z+
 549                                         for(u16 i=0; i<4; i++)
 550                                                 vertices[i].Pos.rotateXZBy(0);
 551                                 else if(j == 1) // Y+
 552                                         for(u16 i=0; i<4; i++)
 553                                                 vertices[i].Pos.rotateYZBy(-90);
 554                                 else if(j == 2) // X+
 555                                         for(u16 i=0; i<4; i++)
 556                                                 vertices[i].Pos.rotateXZBy(-90);
 557                                 else if(j == 3) // Z-
 558                                         for(u16 i=0; i<4; i++)
 559                                                 vertices[i].Pos.rotateXZBy(180);
 560                                 else if(j == 4) // Y-
 561                                         for(u16 i=0; i<4; i++)
 562                                                 vertices[i].Pos.rotateYZBy(90);
 563                                 else if(j == 5) // X-
 564                                         for(u16 i=0; i<4; i++)
 565                                                 vertices[i].Pos.rotateXZBy(90);
 566
 567                                 for(u16 i=0; i<4; i++){
 568                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 569                                 }
 570
 571                                 u16 indices[] = {0,1,2,2,3,0};
 572                                 // Add to mesh collector
 573                                 collector.append(material_glass, vertices, 4, indices, 6);
 574                         }
 575                 break;}
 576                 case NDT_ALLFACES:
 577                 {
 578                         video::SMaterial material_leaves1;
 579                         material_leaves1.setFlag(video::EMF_LIGHTING, false);
 580                         material_leaves1.setFlag(video::EMF_BILINEAR_FILTER, false);
 581                         material_leaves1.setFlag(video::EMF_FOG_ENABLE, true);
 582                         material_leaves1.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 583                         TileSpec tile_leaves1 = getNodeTile(n, p, v3s16(0,0,0),
 584                                         &data->m_temp_mods, tsrc, nodedef);
 585                         AtlasPointer pa_leaves1 = tile_leaves1.texture;
 586                         material_leaves1.setTexture(0, pa_leaves1.atlas);
 587
 588                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio, nodedef)));
 589                         video::SColor c = MapBlock_LightColor(255, l);
 590
 591                         v3f pos = intToFloat(p+blockpos_nodes, BS);
 592                         aabb3f box(-BS/2,-BS/2,-BS/2,BS/2,BS/2,BS/2);
 593                         box.MinEdge += pos;
 594                         box.MaxEdge += pos;
 595                         makeCuboid(&collector, box,
 596                                         &material_leaves1, &pa_leaves1, 1,
 597                                         c, NULL);
 598                 break;}
 599                 case NDT_ALLFACES_OPTIONAL:
 600                         // This is always pre-converted to something else
 601                         assert(0);
 602                         break;
 603                 case NDT_TORCHLIKE:
 604                 {
 605                         v3s16 dir = n.getWallMountedDir(nodedef);
 606
 607                         AtlasPointer ap(0);
 608                         if(dir == v3s16(0,-1,0)){
 609                                 ap = f.tiles[0].texture; // floor
 610                         } else if(dir == v3s16(0,1,0)){
 611                                 ap = f.tiles[1].texture; // ceiling
 612                         // For backwards compatibility
 613                         } else if(dir == v3s16(0,0,0)){
 614                                 ap = f.tiles[0].texture; // floor
 615                         } else {
 616                                 ap = f.tiles[2].texture; // side
 617                         }
 618
 619                         // Set material
 620                         video::SMaterial material;
 621                         material.setFlag(video::EMF_LIGHTING, false);
 622                         material.setFlag(video::EMF_BACK_FACE_CULLING, false);
 623                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 624                         material.setFlag(video::EMF_FOG_ENABLE, true);
 625                         //material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 626                         material.MaterialType
 627                                         = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 628                         material.setTexture(0, ap.atlas);
 629
 630                         video::SColor c(255,255,255,255);
 631
 632                         // Wall at X+ of node
 633                         video::S3DVertex vertices[4] =
 634                         {
 635                                 video::S3DVertex(-BS/2,-BS/2,0, 0,0,0, c,
 636                                                 ap.x0(), ap.y1()),
 637                                 video::S3DVertex(BS/2,-BS/2,0, 0,0,0, c,
 638                                                 ap.x1(), ap.y1()),
 639                                 video::S3DVertex(BS/2,BS/2,0, 0,0,0, c,
 640                                                 ap.x1(), ap.y0()),
 641                                 video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c,
 642                                                 ap.x0(), ap.y0()),
 643                         };
 644
 645                         for(s32 i=0; i<4; i++)
 646                         {
 647                                 if(dir == v3s16(1,0,0))
 648                                         vertices[i].Pos.rotateXZBy(0);
 649                                 if(dir == v3s16(-1,0,0))
 650                                         vertices[i].Pos.rotateXZBy(180);
 651                                 if(dir == v3s16(0,0,1))
 652                                         vertices[i].Pos.rotateXZBy(90);
 653                                 if(dir == v3s16(0,0,-1))
 654                                         vertices[i].Pos.rotateXZBy(-90);
 655                                 if(dir == v3s16(0,-1,0))
 656                                         vertices[i].Pos.rotateXZBy(45);
 657                                 if(dir == v3s16(0,1,0))
 658                                         vertices[i].Pos.rotateXZBy(-45);
 659
 660                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 661                         }
 662
 663                         u16 indices[] = {0,1,2,2,3,0};
 664                         // Add to mesh collector
 665                         collector.append(material, vertices, 4, indices, 6);
 666                 break;}
 667                 case NDT_SIGNLIKE:
 668                 {
 669                         // Set material
 670                         video::SMaterial material;
 671                         material.setFlag(video::EMF_LIGHTING, false);
 672                         material.setFlag(video::EMF_BACK_FACE_CULLING, false);
 673                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 674                         material.setFlag(video::EMF_FOG_ENABLE, true);
 675                         material.MaterialType
 676                                         = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 677                         AtlasPointer ap = f.tiles[0].texture;
 678                         material.setTexture(0, ap.atlas);
 679
 680                         u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio, nodedef));
 681                         video::SColor c = MapBlock_LightColor(255, l);
 682
 683                         float d = (float)BS/16;
 684                         // Wall at X+ of node
 685                         video::S3DVertex vertices[4] =
 686                         {
 687                                 video::S3DVertex(BS/2-d,BS/2,BS/2, 0,0,0, c,
 688                                                 ap.x0(), ap.y0()),
 689                                 video::S3DVertex(BS/2-d,BS/2,-BS/2, 0,0,0, c,
 690                                                 ap.x1(), ap.y0()),
 691                                 video::S3DVertex(BS/2-d,-BS/2,-BS/2, 0,0,0, c,
 692                                                 ap.x1(), ap.y1()),
 693                                 video::S3DVertex(BS/2-d,-BS/2,BS/2, 0,0,0, c,
 694                                                 ap.x0(), ap.y1()),
 695                         };
 696
 697                         v3s16 dir = n.getWallMountedDir(nodedef);
 698
 699                         for(s32 i=0; i<4; i++)
 700                         {
 701                                 if(dir == v3s16(1,0,0))
 702                                         vertices[i].Pos.rotateXZBy(0);
 703                                 if(dir == v3s16(-1,0,0))
 704                                         vertices[i].Pos.rotateXZBy(180);
 705                                 if(dir == v3s16(0,0,1))
 706                                         vertices[i].Pos.rotateXZBy(90);
 707                                 if(dir == v3s16(0,0,-1))
 708                                         vertices[i].Pos.rotateXZBy(-90);
 709                                 if(dir == v3s16(0,-1,0))
 710                                         vertices[i].Pos.rotateXYBy(-90);
 711                                 if(dir == v3s16(0,1,0))
 712                                         vertices[i].Pos.rotateXYBy(90);
 713
 714                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 715                         }
 716
 717                         u16 indices[] = {0,1,2,2,3,0};
 718                         // Add to mesh collector
 719                         collector.append(material, vertices, 4, indices, 6);
 720                 break;}
 721                 case NDT_PLANTLIKE:
 722                 {
 723                         video::SMaterial material_papyrus;
 724                         material_papyrus.setFlag(video::EMF_LIGHTING, false);
 725                         material_papyrus.setFlag(video::EMF_BILINEAR_FILTER, false);
 726                         material_papyrus.setFlag(video::EMF_FOG_ENABLE, true);
 727                         material_papyrus.MaterialType=video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 728                         AtlasPointer pa_papyrus = f.tiles[0].texture;
 729                         material_papyrus.setTexture(0, pa_papyrus.atlas);
 730
 731                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio, nodedef)));
 732                         video::SColor c = MapBlock_LightColor(255, l);
 733
 734                         for(u32 j=0; j<4; j++)
 735                         {
 736                                 video::S3DVertex vertices[4] =
 737                                 {
 738                                         video::S3DVertex(-BS/2*f.visual_scale,-BS/2,0, 0,0,0, c,
 739                                                 pa_papyrus.x0(), pa_papyrus.y1()),
 740                                         video::S3DVertex( BS/2*f.visual_scale,-BS/2,0, 0,0,0, c,
 741                                                 pa_papyrus.x1(), pa_papyrus.y1()),
 742                                         video::S3DVertex( BS/2*f.visual_scale,
 743                                                 -BS/2 + f.visual_scale*BS,0, 0,0,0, c,
 744                                                 pa_papyrus.x1(), pa_papyrus.y0()),
 745                                         video::S3DVertex(-BS/2*f.visual_scale,
 746                                                 -BS/2 + f.visual_scale*BS,0, 0,0,0, c,
 747                                                 pa_papyrus.x0(), pa_papyrus.y0()),
 748                                 };
 749
 750                                 if(j == 0)
 751                                 {
 752                                         for(u16 i=0; i<4; i++)
 753                                                 vertices[i].Pos.rotateXZBy(45);
 754                                 }
 755                                 else if(j == 1)
 756                                 {
 757                                         for(u16 i=0; i<4; i++)
 758                                                 vertices[i].Pos.rotateXZBy(-45);
 759                                 }
 760                                 else if(j == 2)
 761                                 {
 762                                         for(u16 i=0; i<4; i++)
 763                                                 vertices[i].Pos.rotateXZBy(135);
 764                                 }
 765                                 else if(j == 3)
 766                                 {
 767                                         for(u16 i=0; i<4; i++)
 768                                                 vertices[i].Pos.rotateXZBy(-135);
 769                                 }
 770
 771                                 for(u16 i=0; i<4; i++)
 772                                 {
 773                                         vertices[i].Pos *= f.visual_scale;
 774                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 775                                 }
 776
 777                                 u16 indices[] = {0,1,2,2,3,0};
 778                                 // Add to mesh collector
 779                                 collector.append(material_papyrus, vertices, 4, indices, 6);
 780                         }
 781                 break;}
 782                 case NDT_FENCELIKE:
 783                 {
 784                         video::SMaterial material_wood;
 785                         material_wood.setFlag(video::EMF_LIGHTING, false);
 786                         material_wood.setFlag(video::EMF_BILINEAR_FILTER, false);
 787                         material_wood.setFlag(video::EMF_FOG_ENABLE, true);
 788                         material_wood.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 789                         TileSpec tile_wood = getNodeTile(n, p, v3s16(0,0,0),
 790                                         &data->m_temp_mods, tsrc, nodedef);
 791                         AtlasPointer pa_wood = tile_wood.texture;
 792                         material_wood.setTexture(0, pa_wood.atlas);
 793
 794                         video::SMaterial material_wood_nomod;
 795                         material_wood_nomod.setFlag(video::EMF_LIGHTING, false);
 796                         material_wood_nomod.setFlag(video::EMF_BILINEAR_FILTER, false);
 797                         material_wood_nomod.setFlag(video::EMF_FOG_ENABLE, true);
 798                         material_wood_nomod.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 799
 800                         TileSpec tile_wood_nomod = getNodeTile(n, p, v3s16(0,0,0),
 801                                         NULL, tsrc, nodedef);
 802                         AtlasPointer pa_wood_nomod = tile_wood_nomod.texture;
 803                         material_wood_nomod.setTexture(0, pa_wood_nomod.atlas);
 804
 805                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio, nodedef)));
 806                         video::SColor c = MapBlock_LightColor(255, l);
 807
 808                         const f32 post_rad=(f32)BS/10;
 809                         const f32 bar_rad=(f32)BS/20;
 810                         const f32 bar_len=(f32)(BS/2)-post_rad;
 811
 812                         v3f pos = intToFloat(p+blockpos_nodes, BS);
 813
 814                         // The post - always present
 815                         aabb3f post(-post_rad,-BS/2,-post_rad,post_rad,BS/2,post_rad);
 816                         post.MinEdge += pos;
 817                         post.MaxEdge += pos;
 818                         f32 postuv[24]={
 819                                         0.4,0.4,0.6,0.6,
 820                                         0.4,0.4,0.6,0.6,
 821                                         0.35,0,0.65,1,
 822                                         0.35,0,0.65,1,
 823                                         0.35,0,0.65,1,
 824                                         0.35,0,0.65,1};
 825                         makeCuboid(&collector, post, &material_wood,
 826                                         &pa_wood, 1, c, postuv);
 827
 828                         // Now a section of fence, +X, if there's a post there
 829                         v3s16 p2 = p;
 830                         p2.X++;
 831                         MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 832                         const ContentFeatures *f2 = &nodedef->get(n2);
 833                         if(f2->drawtype == NDT_FENCELIKE)
 834                         {
 835                                 aabb3f bar(-bar_len+BS/2,-bar_rad+BS/4,-bar_rad,
 836                                                 bar_len+BS/2,bar_rad+BS/4,bar_rad);
 837                                 bar.MinEdge += pos;
 838                                 bar.MaxEdge += pos;
 839                                 f32 xrailuv[24]={
 840                                         0,0.4,1,0.6,
 841                                         0,0.4,1,0.6,
 842                                         0,0.4,1,0.6,
 843                                         0,0.4,1,0.6,
 844                                         0,0.4,1,0.6,
 845                                         0,0.4,1,0.6};
 846                                 makeCuboid(&collector, bar, &material_wood_nomod,
 847                                                 &pa_wood_nomod, 1, c, xrailuv);
 848                                 bar.MinEdge.Y -= BS/2;
 849                                 bar.MaxEdge.Y -= BS/2;
 850                                 makeCuboid(&collector, bar, &material_wood_nomod,
 851                                                 &pa_wood_nomod, 1, c, xrailuv);
 852                         }
 853
 854                         // Now a section of fence, +Z, if there's a post there
 855                         p2 = p;
 856                         p2.Z++;
 857                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 858                         f2 = &nodedef->get(n2);
 859                         if(f2->drawtype == NDT_FENCELIKE)
 860                         {
 861                                 aabb3f bar(-bar_rad,-bar_rad+BS/4,-bar_len+BS/2,
 862                                                 bar_rad,bar_rad+BS/4,bar_len+BS/2);
 863                                 bar.MinEdge += pos;
 864                                 bar.MaxEdge += pos;
 865                                 f32 zrailuv[24]={
 866                                         0,0.4,1,0.6,
 867                                         0,0.4,1,0.6,
 868                                         0,0.4,1,0.6,
 869                                         0,0.4,1,0.6,
 870                                         0,0.4,1,0.6,
 871                                         0,0.4,1,0.6};
 872
 873                                 makeCuboid(&collector, bar, &material_wood_nomod,
 874                                                 &pa_wood_nomod, 1, c, zrailuv);
 875                                 bar.MinEdge.Y -= BS/2;
 876                                 bar.MaxEdge.Y -= BS/2;
 877                                 makeCuboid(&collector, bar, &material_wood_nomod,
 878                                                 &pa_wood_nomod, 1, c, zrailuv);
 879                         }
 880                 break;}
 881                 case NDT_RAILLIKE:
 882                 {
 883                         bool is_rail_x [] = { false, false };  /* x-1, x+1 */
 884                         bool is_rail_z [] = { false, false };  /* z-1, z+1 */
 885
 886                         MapNode n_minus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1,y,z));
 887                         MapNode n_plus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1,y,z));
 888                         MapNode n_minus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z-1));
 889                         MapNode n_plus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z+1));
 890
 891                         content_t thiscontent = n.getContent();
 892                         if(n_minus_x.getContent() == thiscontent)
 893                                 is_rail_x[0] = true;
 894                         if(n_plus_x.getContent() == thiscontent)
 895                                 is_rail_x[1] = true;
 896                         if(n_minus_z.getContent() == thiscontent)
 897                                 is_rail_z[0] = true;
 898                         if(n_plus_z.getContent() == thiscontent)
 899                                 is_rail_z[1] = true;
 900
 901                         int adjacencies = is_rail_x[0] + is_rail_x[1] + is_rail_z[0] + is_rail_z[1];
 902
 903                         // Assign textures
 904                         AtlasPointer ap = f.tiles[0].texture; // straight
 905                         if(adjacencies < 2)
 906                                 ap = f.tiles[0].texture; // straight
 907                         else if(adjacencies == 2)
 908                         {
 909                                 if((is_rail_x[0] && is_rail_x[1]) || (is_rail_z[0] && is_rail_z[1]))
 910                                         ap = f.tiles[0].texture; // straight
 911                                 else
 912                                         ap = f.tiles[1].texture; // curved
 913                         }
 914                         else if(adjacencies == 3)
 915                                 ap = f.tiles[2].texture; // t-junction
 916                         else if(adjacencies == 4)
 917                                 ap = f.tiles[3].texture; // crossing
 918
 919                         video::SMaterial material_rail;
 920                         material_rail.setFlag(video::EMF_LIGHTING, false);
 921                         material_rail.setFlag(video::EMF_BACK_FACE_CULLING, false);
 922                         material_rail.setFlag(video::EMF_BILINEAR_FILTER, false);
 923                         material_rail.setFlag(video::EMF_FOG_ENABLE, true);
 924                         material_rail.MaterialType
 925                                         = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 926                         material_rail.setTexture(0, ap.atlas);
 927
 928                         u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio, nodedef));
 929                         video::SColor c = MapBlock_LightColor(255, l);
 930
 931                         float d = (float)BS/16;
 932                         video::S3DVertex vertices[4] =
 933                         {
 934                                 video::S3DVertex(-BS/2,-BS/2+d,-BS/2, 0,0,0, c,
 935                                                 ap.x0(), ap.y1()),
 936                                 video::S3DVertex(BS/2,-BS/2+d,-BS/2, 0,0,0, c,
 937                                                 ap.x1(), ap.y1()),
 938                                 video::S3DVertex(BS/2,-BS/2+d,BS/2, 0,0,0, c,
 939                                                 ap.x1(), ap.y0()),
 940                                 video::S3DVertex(-BS/2,-BS/2+d,BS/2, 0,0,0, c,
 941                                                 ap.x0(), ap.y0()),
 942                         };
 943
 944                         // Rotate textures
 945                         int angle = 0;
 946
 947                         if(adjacencies == 1)
 948                         {
 949                                 if(is_rail_x[0] || is_rail_x[1])
 950                                         angle = 90;
 951                         }
 952                         else if(adjacencies == 2)
 953                         {
 954                                 if(is_rail_x[0] && is_rail_x[1])
 955                                         angle = 90;
 956                                 else if(is_rail_x[0] && is_rail_z[0])
 957                                         angle = 270;
 958                                 else if(is_rail_x[0] && is_rail_z[1])
 959                                         angle = 180;
 960                                 else if(is_rail_x[1] && is_rail_z[1])
 961                                         angle = 90;
 962                         }
 963                         else if(adjacencies == 3)
 964                         {
 965                                 if(!is_rail_x[0])
 966                                         angle=0;
 967                                 if(!is_rail_x[1])
 968                                         angle=180;
 969                                 if(!is_rail_z[0])
 970                                         angle=90;
 971                                 if(!is_rail_z[1])
 972                                         angle=270;
 973                         }
 974
 975                         if(angle != 0) {
 976                                 for(u16 i=0; i<4; i++)
 977                                         vertices[i].Pos.rotateXZBy(angle);
 978                         }
 979
 980                         for(s32 i=0; i<4; i++)
 981                         {
 982                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 983                         }
 984
 985                         u16 indices[] = {0,1,2,2,3,0};
 986                         collector.append(material_rail, vertices, 4, indices, 6);
 987                 break;}
 988                 }
 989         }
 990 }
 991