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 //  tiles     - the tiles (materials) to use (for all 6 faces)
  33 //  tilecount - number of entries in tiles, 1<=tilecount<=6
  34 //  c         - vertex colour - used for all
  35 //  txc       - texture coordinates - this is a list of texture coordinates
  36 //              for the opposite corners of each face - therefore, there
  37 //              should be (2+2)*6=24 values in the list. Alternatively, pass
  38 //              NULL to use the entire texture for each face. The order of
  39 //              the faces in the list is up-down-right-left-back-front
  40 //              (compatible with ContentFeatures). If you specified 0,0,1,1
  41 //              for each face, that would be the same as passing NULL.
  42 void makeCuboid(MeshCollector *collector, const aabb3f &box,
  43         const TileSpec *tiles, int tilecount,
  44         video::SColor &c, const f32* txc)
  45 {
  46         assert(tilecount >= 1 && tilecount <= 6);
  47
  48         v3f min = box.MinEdge;
  49         v3f max = box.MaxEdge;
  50
  51         if(txc == NULL)
  52         {
  53                 static const f32 txc_default[24] = {
  54                         0,0,1,1,
  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                 };
  61                 txc = txc_default;
  62         }
  63
  64         video::S3DVertex vertices[24] =
  65         {
  66                 // up
  67                 video::S3DVertex(min.X,max.Y,max.Z, 0,1,0, c, txc[0],txc[1]),
  68                 video::S3DVertex(max.X,max.Y,max.Z, 0,1,0, c, txc[2],txc[1]),
  69                 video::S3DVertex(max.X,max.Y,min.Z, 0,1,0, c, txc[2],txc[3]),
  70                 video::S3DVertex(min.X,max.Y,min.Z, 0,1,0, c, txc[0],txc[3]),
  71                 // down
  72                 video::S3DVertex(min.X,min.Y,min.Z, 0,-1,0, c, txc[4],txc[5]),
  73                 video::S3DVertex(max.X,min.Y,min.Z, 0,-1,0, c, txc[6],txc[5]),
  74                 video::S3DVertex(max.X,min.Y,max.Z, 0,-1,0, c, txc[6],txc[7]),
  75                 video::S3DVertex(min.X,min.Y,max.Z, 0,-1,0, c, txc[4],txc[7]),
  76                 // right
  77                 video::S3DVertex(max.X,max.Y,min.Z, 1,0,0, c, txc[ 8],txc[9]),
  78                 video::S3DVertex(max.X,max.Y,max.Z, 1,0,0, c, txc[10],txc[9]),
  79                 video::S3DVertex(max.X,min.Y,max.Z, 1,0,0, c, txc[10],txc[11]),
  80                 video::S3DVertex(max.X,min.Y,min.Z, 1,0,0, c, txc[ 8],txc[11]),
  81                 // left
  82                 video::S3DVertex(min.X,max.Y,max.Z, -1,0,0, c, txc[12],txc[13]),
  83                 video::S3DVertex(min.X,max.Y,min.Z, -1,0,0, c, txc[14],txc[13]),
  84                 video::S3DVertex(min.X,min.Y,min.Z, -1,0,0, c, txc[14],txc[15]),
  85                 video::S3DVertex(min.X,min.Y,max.Z, -1,0,0, c, txc[12],txc[15]),
  86                 // back
  87                 video::S3DVertex(max.X,max.Y,max.Z, 0,0,1, c, txc[16],txc[17]),
  88                 video::S3DVertex(min.X,max.Y,max.Z, 0,0,1, c, txc[18],txc[17]),
  89                 video::S3DVertex(min.X,min.Y,max.Z, 0,0,1, c, txc[18],txc[19]),
  90                 video::S3DVertex(max.X,min.Y,max.Z, 0,0,1, c, txc[16],txc[19]),
  91                 // front
  92                 video::S3DVertex(min.X,max.Y,min.Z, 0,0,-1, c, txc[20],txc[21]),
  93                 video::S3DVertex(max.X,max.Y,min.Z, 0,0,-1, c, txc[22],txc[21]),
  94                 video::S3DVertex(max.X,min.Y,min.Z, 0,0,-1, c, txc[22],txc[23]),
  95                 video::S3DVertex(min.X,min.Y,min.Z, 0,0,-1, c, txc[20],txc[23]),
  96         };
  97
  98         for(s32 j=0; j<24; j++)
  99         {
 100                 int tileindex = MYMIN(j/4, tilecount-1);
 101                 vertices[j].TCoords *= tiles[tileindex].texture.size;
 102                 vertices[j].TCoords += tiles[tileindex].texture.pos;
 103         }
 104
 105         u16 indices[] = {0,1,2,2,3,0};
 106
 107         // Add to mesh collector
 108         for(s32 j=0; j<24; j+=4)
 109         {
 110                 int tileindex = MYMIN(j/4, tilecount-1);
 111                 collector->append(tiles[tileindex],
 112                                 vertices+j, 4, indices, 6);
 113         }
 114 }
 115
 116 void mapblock_mesh_generate_special(MeshMakeData *data,
 117                 MeshCollector &collector)
 118 {
 119         INodeDefManager *nodedef = data->m_gamedef->ndef();
 120
 121         // 0ms
 122         //TimeTaker timer("mapblock_mesh_generate_special()");
 123
 124         /*
 125                 Some settings
 126         */
 127         bool new_style_water = g_settings->getBool("new_style_water");
 128
 129         float node_liquid_level = 1.0;
 130         if(new_style_water)
 131                 node_liquid_level = 0.85;
 132
 133         v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;
 134
 135         for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 136         for(s16 y=0; y<MAP_BLOCKSIZE; y++)
 137         for(s16 x=0; x<MAP_BLOCKSIZE; x++)
 138         {
 139                 v3s16 p(x,y,z);
 140
 141                 MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes+p);
 142                 const ContentFeatures &f = nodedef->get(n);
 143
 144                 // Only solidness=0 stuff is drawn here
 145                 if(f.solidness != 0)
 146                         continue;
 147
 148                 switch(f.drawtype){
 149                 default:
 150                         infostream<<"Got "<<f.drawtype<<std::endl;
 151                         assert(0);
 152                         break;
 153                 case NDT_AIRLIKE:
 154                         break;
 155                 case NDT_LIQUID:
 156                 {
 157                         /*
 158                                 Add water sources to mesh if using new style
 159                         */
 160                         TileSpec tile_liquid = f.special_tiles[0];
 161                         AtlasPointer &pa_liquid = tile_liquid.texture;
 162
 163                         bool top_is_air = false;
 164                         MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 165                         if(n.getContent() == CONTENT_AIR)
 166                                 top_is_air = true;
 167
 168                         if(top_is_air == false)
 169                                 continue;
 170
 171                         u16 l = getInteriorLight(n, 0, data);
 172                         video::SColor c = MapBlock_LightColor(f.alpha, l);
 173
 174                         video::S3DVertex vertices[4] =
 175                         {
 176                                 video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 177                                                 pa_liquid.x0(), pa_liquid.y1()),
 178                                 video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 179                                                 pa_liquid.x1(), pa_liquid.y1()),
 180                                 video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 181                                                 pa_liquid.x1(), pa_liquid.y0()),
 182                                 video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 183                                                 pa_liquid.x0(), pa_liquid.y0()),
 184                         };
 185
 186                         v3f offset(p.X, p.Y + (-0.5+node_liquid_level)*BS, p.Z);
 187                         for(s32 i=0; i<4; i++)
 188                         {
 189                                 vertices[i].Pos += offset;
 190                         }
 191
 192                         u16 indices[] = {0,1,2,2,3,0};
 193                         // Add to mesh collector
 194                         collector.append(tile_liquid, vertices, 4, indices, 6);
 195                 break;}
 196                 case NDT_FLOWINGLIQUID:
 197                 {
 198                         /*
 199                                 Add flowing liquid to mesh
 200                         */
 201                         TileSpec tile_liquid = f.special_tiles[0];
 202                         TileSpec tile_liquid_bfculled = f.special_tiles[1];
 203                         AtlasPointer &pa_liquid = tile_liquid.texture;
 204
 205                         bool top_is_same_liquid = false;
 206                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 207                         content_t c_flowing = nodedef->getId(f.liquid_alternative_flowing);
 208                         content_t c_source = nodedef->getId(f.liquid_alternative_source);
 209                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 210                                 top_is_same_liquid = true;
 211
 212                         u16 l = 0;
 213                         // Use the light of the node on top if possible
 214                         if(nodedef->get(ntop).param_type == CPT_LIGHT)
 215                                 l = getInteriorLight(ntop, 0, data);
 216                         // Otherwise use the light of this node (the liquid)
 217                         else
 218                                 l = getInteriorLight(n, 0, data);
 219                         video::SColor c = MapBlock_LightColor(f.alpha, l);
 220
 221                         // Neighbor liquid levels (key = relative position)
 222                         // Includes current node
 223                         core::map<v3s16, f32> neighbor_levels;
 224                         core::map<v3s16, content_t> neighbor_contents;
 225                         core::map<v3s16, u8> neighbor_flags;
 226                         const u8 neighborflag_top_is_same_liquid = 0x01;
 227                         v3s16 neighbor_dirs[9] = {
 228                                 v3s16(0,0,0),
 229                                 v3s16(0,0,1),
 230                                 v3s16(0,0,-1),
 231                                 v3s16(1,0,0),
 232                                 v3s16(-1,0,0),
 233                                 v3s16(1,0,1),
 234                                 v3s16(-1,0,-1),
 235                                 v3s16(1,0,-1),
 236                                 v3s16(-1,0,1),
 237                         };
 238                         for(u32 i=0; i<9; i++)
 239                         {
 240                                 content_t content = CONTENT_AIR;
 241                                 float level = -0.5 * BS;
 242                                 u8 flags = 0;
 243                                 // Check neighbor
 244                                 v3s16 p2 = p + neighbor_dirs[i];
 245                                 MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 246                                 if(n2.getContent() != CONTENT_IGNORE)
 247                                 {
 248                                         content = n2.getContent();
 249
 250                                         if(n2.getContent() == c_source)
 251                                                 level = (-0.5+node_liquid_level) * BS;
 252                                         else if(n2.getContent() == c_flowing)
 253                                                 level = (-0.5 + ((float)(n2.param2&LIQUID_LEVEL_MASK)
 254                                                                 + 0.5) / 8.0 * node_liquid_level) * BS;
 255
 256                                         // Check node above neighbor.
 257                                         // NOTE: This doesn't get executed if neighbor
 258                                         //       doesn't exist
 259                                         p2.Y += 1;
 260                                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 261                                         if(n2.getContent() == c_source ||
 262                                                         n2.getContent() == c_flowing)
 263                                                 flags |= neighborflag_top_is_same_liquid;
 264                                 }
 265
 266                                 neighbor_levels.insert(neighbor_dirs[i], level);
 267                                 neighbor_contents.insert(neighbor_dirs[i], content);
 268                                 neighbor_flags.insert(neighbor_dirs[i], flags);
 269                         }
 270
 271                         // Corner heights (average between four liquids)
 272                         f32 corner_levels[4];
 273
 274                         v3s16 halfdirs[4] = {
 275                                 v3s16(0,0,0),
 276                                 v3s16(1,0,0),
 277                                 v3s16(1,0,1),
 278                                 v3s16(0,0,1),
 279                         };
 280                         for(u32 i=0; i<4; i++)
 281                         {
 282                                 v3s16 cornerdir = halfdirs[i];
 283                                 float cornerlevel = 0;
 284                                 u32 valid_count = 0;
 285                                 u32 air_count = 0;
 286                                 for(u32 j=0; j<4; j++)
 287                                 {
 288                                         v3s16 neighbordir = cornerdir - halfdirs[j];
 289                                         content_t content = neighbor_contents[neighbordir];
 290                                         // If top is liquid, draw starting from top of node
 291                                         if(neighbor_flags[neighbordir] &
 292                                                         neighborflag_top_is_same_liquid)
 293                                         {
 294                                                 cornerlevel = 0.5*BS;
 295                                                 valid_count = 1;
 296                                                 break;
 297                                         }
 298                                         // Source is always the same height
 299                                         else if(content == c_source)
 300                                         {
 301                                                 cornerlevel = (-0.5+node_liquid_level)*BS;
 302                                                 valid_count = 1;
 303                                                 break;
 304                                         }
 305                                         // Flowing liquid has level information
 306                                         else if(content == c_flowing)
 307                                         {
 308                                                 cornerlevel += neighbor_levels[neighbordir];
 309                                                 valid_count++;
 310                                         }
 311                                         else if(content == CONTENT_AIR)
 312                                         {
 313                                                 air_count++;
 314                                         }
 315                                 }
 316                                 if(air_count >= 2)
 317                                         cornerlevel = -0.5*BS;
 318                                 else if(valid_count > 0)
 319                                         cornerlevel /= valid_count;
 320                                 corner_levels[i] = cornerlevel;
 321                         }
 322
 323                         /*
 324                                 Generate sides
 325                         */
 326
 327                         v3s16 side_dirs[4] = {
 328                                 v3s16(1,0,0),
 329                                 v3s16(-1,0,0),
 330                                 v3s16(0,0,1),
 331                                 v3s16(0,0,-1),
 332                         };
 333                         s16 side_corners[4][2] = {
 334                                 {1, 2},
 335                                 {3, 0},
 336                                 {2, 3},
 337                                 {0, 1},
 338                         };
 339                         for(u32 i=0; i<4; i++)
 340                         {
 341                                 v3s16 dir = side_dirs[i];
 342
 343                                 /*
 344                                         If our topside is liquid and neighbor's topside
 345                                         is liquid, don't draw side face
 346                                 */
 347                                 if(top_is_same_liquid &&
 348                                                 neighbor_flags[dir] & neighborflag_top_is_same_liquid)
 349                                         continue;
 350
 351                                 content_t neighbor_content = neighbor_contents[dir];
 352                                 const ContentFeatures &n_feat = nodedef->get(neighbor_content);
 353
 354                                 // Don't draw face if neighbor is blocking the view
 355                                 if(n_feat.solidness == 2)
 356                                         continue;
 357
 358                                 bool neighbor_is_same_liquid = (neighbor_content == c_source
 359                                                 || neighbor_content == c_flowing);
 360
 361                                 // Don't draw any faces if neighbor same is liquid and top is
 362                                 // same liquid
 363                                 if(neighbor_is_same_liquid == true
 364                                                 && top_is_same_liquid == false)
 365                                         continue;
 366
 367                                 // Use backface culled material if neighbor doesn't have a
 368                                 // solidness of 0
 369                                 const TileSpec *current_tile = &tile_liquid;
 370                                 if(n_feat.solidness != 0 || n_feat.visual_solidness != 0)
 371                                         current_tile = &tile_liquid_bfculled;
 372
 373                                 video::S3DVertex vertices[4] =
 374                                 {
 375                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 376                                                         pa_liquid.x0(), pa_liquid.y1()),
 377                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 378                                                         pa_liquid.x1(), pa_liquid.y1()),
 379                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 380                                                         pa_liquid.x1(), pa_liquid.y0()),
 381                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 382                                                         pa_liquid.x0(), pa_liquid.y0()),
 383                                 };
 384
 385                                 /*
 386                                         If our topside is liquid, set upper border of face
 387                                         at upper border of node
 388                                 */
 389                                 if(top_is_same_liquid)
 390                                 {
 391                                         vertices[2].Pos.Y = 0.5*BS;
 392                                         vertices[3].Pos.Y = 0.5*BS;
 393                                 }
 394                                 /*
 395                                         Otherwise upper position of face is corner levels
 396                                 */
 397                                 else
 398                                 {
 399                                         vertices[2].Pos.Y = corner_levels[side_corners[i][0]];
 400                                         vertices[3].Pos.Y = corner_levels[side_corners[i][1]];
 401                                 }
 402
 403                                 /*
 404                                         If neighbor is liquid, lower border of face is corner
 405                                         liquid levels
 406                                 */
 407                                 if(neighbor_is_same_liquid)
 408                                 {
 409                                         vertices[0].Pos.Y = corner_levels[side_corners[i][1]];
 410                                         vertices[1].Pos.Y = corner_levels[side_corners[i][0]];
 411                                 }
 412                                 /*
 413                                         If neighbor is not liquid, lower border of face is
 414                                         lower border of node
 415                                 */
 416                                 else
 417                                 {
 418                                         vertices[0].Pos.Y = -0.5*BS;
 419                                         vertices[1].Pos.Y = -0.5*BS;
 420                                 }
 421
 422                                 for(s32 j=0; j<4; j++)
 423                                 {
 424                                         if(dir == v3s16(0,0,1))
 425                                                 vertices[j].Pos.rotateXZBy(0);
 426                                         if(dir == v3s16(0,0,-1))
 427                                                 vertices[j].Pos.rotateXZBy(180);
 428                                         if(dir == v3s16(-1,0,0))
 429                                                 vertices[j].Pos.rotateXZBy(90);
 430                                         if(dir == v3s16(1,0,-0))
 431                                                 vertices[j].Pos.rotateXZBy(-90);
 432
 433                                         // Do this to not cause glitches when two liquids are
 434                                         // side-by-side
 435                                         /*if(neighbor_is_same_liquid == false){
 436                                                 vertices[j].Pos.X *= 0.98;
 437                                                 vertices[j].Pos.Z *= 0.98;
 438                                         }*/
 439
 440                                         vertices[j].Pos += intToFloat(p, BS);
 441                                 }
 442
 443                                 u16 indices[] = {0,1,2,2,3,0};
 444                                 // Add to mesh collector
 445                                 collector.append(*current_tile, vertices, 4, indices, 6);
 446                         }
 447
 448                         /*
 449                                 Generate top side, if appropriate
 450                         */
 451
 452                         if(top_is_same_liquid == false)
 453                         {
 454                                 video::S3DVertex vertices[4] =
 455                                 {
 456                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 457                                                         pa_liquid.x0(), pa_liquid.y1()),
 458                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 459                                                         pa_liquid.x1(), pa_liquid.y1()),
 460                                         video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 461                                                         pa_liquid.x1(), pa_liquid.y0()),
 462                                         video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 463                                                         pa_liquid.x0(), pa_liquid.y0()),
 464                                 };
 465
 466                                 // This fixes a strange bug
 467                                 s32 corner_resolve[4] = {3,2,1,0};
 468
 469                                 for(s32 i=0; i<4; i++)
 470                                 {
 471                                         //vertices[i].Pos.Y += liquid_level;
 472                                         //vertices[i].Pos.Y += neighbor_levels[v3s16(0,0,0)];
 473                                         s32 j = corner_resolve[i];
 474                                         vertices[i].Pos.Y += corner_levels[j];
 475                                         vertices[i].Pos += intToFloat(p, BS);
 476                                 }
 477
 478                                 u16 indices[] = {0,1,2,2,3,0};
 479                                 // Add to mesh collector
 480                                 collector.append(tile_liquid, vertices, 4, indices, 6);
 481                         }
 482                 break;}
 483                 case NDT_GLASSLIKE:
 484                 {
 485                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
 486                         AtlasPointer ap = tile.texture;
 487
 488                         u16 l = getInteriorLight(n, 1, data);
 489                         video::SColor c = MapBlock_LightColor(255, l);
 490
 491                         for(u32 j=0; j<6; j++)
 492                         {
 493                                 // Check this neighbor
 494                                 v3s16 n2p = blockpos_nodes + p + g_6dirs[j];
 495                                 MapNode n2 = data->m_vmanip.getNodeNoEx(n2p);
 496                                 // Don't make face if neighbor is of same type
 497                                 if(n2.getContent() == n.getContent())
 498                                         continue;
 499
 500                                 // The face at Z+
 501                                 video::S3DVertex vertices[4] =
 502                                 {
 503                                         video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c,
 504                                                 ap.x0(), ap.y1()),
 505                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c,
 506                                                 ap.x1(), ap.y1()),
 507                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c,
 508                                                 ap.x1(), ap.y0()),
 509                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c,
 510                                                 ap.x0(), ap.y0()),
 511                                 };
 512
 513                                 // Rotations in the g_6dirs format
 514                                 if(j == 0) // Z+
 515                                         for(u16 i=0; i<4; i++)
 516                                                 vertices[i].Pos.rotateXZBy(0);
 517                                 else if(j == 1) // Y+
 518                                         for(u16 i=0; i<4; i++)
 519                                                 vertices[i].Pos.rotateYZBy(-90);
 520                                 else if(j == 2) // X+
 521                                         for(u16 i=0; i<4; i++)
 522                                                 vertices[i].Pos.rotateXZBy(-90);
 523                                 else if(j == 3) // Z-
 524                                         for(u16 i=0; i<4; i++)
 525                                                 vertices[i].Pos.rotateXZBy(180);
 526                                 else if(j == 4) // Y-
 527                                         for(u16 i=0; i<4; i++)
 528                                                 vertices[i].Pos.rotateYZBy(90);
 529                                 else if(j == 5) // X-
 530                                         for(u16 i=0; i<4; i++)
 531                                                 vertices[i].Pos.rotateXZBy(90);
 532
 533                                 for(u16 i=0; i<4; i++){
 534                                         vertices[i].Pos += intToFloat(p, BS);
 535                                 }
 536
 537                                 u16 indices[] = {0,1,2,2,3,0};
 538                                 // Add to mesh collector
 539                                 collector.append(tile, vertices, 4, indices, 6);
 540                         }
 541                 break;}
 542                 case NDT_ALLFACES:
 543                 {
 544                         TileSpec tile_leaves = getNodeTile(n, p,
 545                                         v3s16(0,0,0), data);
 546                         AtlasPointer pa_leaves = tile_leaves.texture;
 547
 548                         u16 l = getInteriorLight(n, 1, data);
 549                         video::SColor c = MapBlock_LightColor(255, l);
 550
 551                         v3f pos = intToFloat(p, BS);
 552                         aabb3f box(-BS/2,-BS/2,-BS/2,BS/2,BS/2,BS/2);
 553                         box.MinEdge += pos;
 554                         box.MaxEdge += pos;
 555                         makeCuboid(&collector, box, &tile_leaves, 1, c, NULL);
 556                 break;}
 557                 case NDT_ALLFACES_OPTIONAL:
 558                         // This is always pre-converted to something else
 559                         assert(0);
 560                         break;
 561                 case NDT_TORCHLIKE:
 562                 {
 563                         v3s16 dir = n.getWallMountedDir(nodedef);
 564
 565                         u8 tileindex = 0;
 566                         if(dir == v3s16(0,-1,0)){
 567                                 tileindex = 0; // floor
 568                         } else if(dir == v3s16(0,1,0)){
 569                                 tileindex = 1; // ceiling
 570                         // For backwards compatibility
 571                         } else if(dir == v3s16(0,0,0)){
 572                                 tileindex = 0; // floor
 573                         } else {
 574                                 tileindex = 2; // side
 575                         }
 576
 577                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
 578                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 579                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 580
 581                         AtlasPointer ap = tile.texture;
 582
 583                         video::SColor c(255,255,255,255);
 584
 585                         // Wall at X+ of node
 586                         video::S3DVertex vertices[4] =
 587                         {
 588                                 video::S3DVertex(-BS/2,-BS/2,0, 0,0,0, c,
 589                                                 ap.x0(), ap.y1()),
 590                                 video::S3DVertex(BS/2,-BS/2,0, 0,0,0, c,
 591                                                 ap.x1(), ap.y1()),
 592                                 video::S3DVertex(BS/2,BS/2,0, 0,0,0, c,
 593                                                 ap.x1(), ap.y0()),
 594                                 video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c,
 595                                                 ap.x0(), ap.y0()),
 596                         };
 597
 598                         for(s32 i=0; i<4; i++)
 599                         {
 600                                 if(dir == v3s16(1,0,0))
 601                                         vertices[i].Pos.rotateXZBy(0);
 602                                 if(dir == v3s16(-1,0,0))
 603                                         vertices[i].Pos.rotateXZBy(180);
 604                                 if(dir == v3s16(0,0,1))
 605                                         vertices[i].Pos.rotateXZBy(90);
 606                                 if(dir == v3s16(0,0,-1))
 607                                         vertices[i].Pos.rotateXZBy(-90);
 608                                 if(dir == v3s16(0,-1,0))
 609                                         vertices[i].Pos.rotateXZBy(45);
 610                                 if(dir == v3s16(0,1,0))
 611                                         vertices[i].Pos.rotateXZBy(-45);
 612
 613                                 vertices[i].Pos += intToFloat(p, BS);
 614                         }
 615
 616                         u16 indices[] = {0,1,2,2,3,0};
 617                         // Add to mesh collector
 618                         collector.append(tile, vertices, 4, indices, 6);
 619                 break;}
 620                 case NDT_SIGNLIKE:
 621                 {
 622                         TileSpec tile = getNodeTileN(n, p, 0, data);
 623                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 624                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 625                         AtlasPointer ap = tile.texture;
 626
 627                         u16 l = getInteriorLight(n, 0, data);
 628                         video::SColor c = MapBlock_LightColor(255, l);
 629
 630                         float d = (float)BS/16;
 631                         // Wall at X+ of node
 632                         video::S3DVertex vertices[4] =
 633                         {
 634                                 video::S3DVertex(BS/2-d,BS/2,BS/2, 0,0,0, c,
 635                                                 ap.x0(), ap.y0()),
 636                                 video::S3DVertex(BS/2-d,BS/2,-BS/2, 0,0,0, c,
 637                                                 ap.x1(), ap.y0()),
 638                                 video::S3DVertex(BS/2-d,-BS/2,-BS/2, 0,0,0, c,
 639                                                 ap.x1(), ap.y1()),
 640                                 video::S3DVertex(BS/2-d,-BS/2,BS/2, 0,0,0, c,
 641                                                 ap.x0(), ap.y1()),
 642                         };
 643
 644                         v3s16 dir = n.getWallMountedDir(nodedef);
 645
 646                         for(s32 i=0; i<4; i++)
 647                         {
 648                                 if(dir == v3s16(1,0,0))
 649                                         vertices[i].Pos.rotateXZBy(0);
 650                                 if(dir == v3s16(-1,0,0))
 651                                         vertices[i].Pos.rotateXZBy(180);
 652                                 if(dir == v3s16(0,0,1))
 653                                         vertices[i].Pos.rotateXZBy(90);
 654                                 if(dir == v3s16(0,0,-1))
 655                                         vertices[i].Pos.rotateXZBy(-90);
 656                                 if(dir == v3s16(0,-1,0))
 657                                         vertices[i].Pos.rotateXYBy(-90);
 658                                 if(dir == v3s16(0,1,0))
 659                                         vertices[i].Pos.rotateXYBy(90);
 660
 661                                 vertices[i].Pos += intToFloat(p, BS);
 662                         }
 663
 664                         u16 indices[] = {0,1,2,2,3,0};
 665                         // Add to mesh collector
 666                         collector.append(tile, vertices, 4, indices, 6);
 667                 break;}
 668                 case NDT_PLANTLIKE:
 669                 {
 670                         TileSpec tile = getNodeTileN(n, p, 0, data);
 671                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 672                         AtlasPointer ap = tile.texture;
 673
 674                         u16 l = getInteriorLight(n, 1, data);
 675                         video::SColor c = MapBlock_LightColor(255, l);
 676
 677                         for(u32 j=0; j<4; j++)
 678                         {
 679                                 video::S3DVertex vertices[4] =
 680                                 {
 681                                         video::S3DVertex(-BS/2*f.visual_scale,-BS/2,0, 0,0,0, c,
 682                                                 ap.x0(), ap.y1()),
 683                                         video::S3DVertex( BS/2*f.visual_scale,-BS/2,0, 0,0,0, c,
 684                                                 ap.x1(), ap.y1()),
 685                                         video::S3DVertex( BS/2*f.visual_scale,
 686                                                 -BS/2 + f.visual_scale*BS,0, 0,0,0, c,
 687                                                 ap.x1(), ap.y0()),
 688                                         video::S3DVertex(-BS/2*f.visual_scale,
 689                                                 -BS/2 + f.visual_scale*BS,0, 0,0,0, c,
 690                                                 ap.x0(), ap.y0()),
 691                                 };
 692
 693                                 if(j == 0)
 694                                 {
 695                                         for(u16 i=0; i<4; i++)
 696                                                 vertices[i].Pos.rotateXZBy(45);
 697                                 }
 698                                 else if(j == 1)
 699                                 {
 700                                         for(u16 i=0; i<4; i++)
 701                                                 vertices[i].Pos.rotateXZBy(-45);
 702                                 }
 703                                 else if(j == 2)
 704                                 {
 705                                         for(u16 i=0; i<4; i++)
 706                                                 vertices[i].Pos.rotateXZBy(135);
 707                                 }
 708                                 else if(j == 3)
 709                                 {
 710                                         for(u16 i=0; i<4; i++)
 711                                                 vertices[i].Pos.rotateXZBy(-135);
 712                                 }
 713
 714                                 for(u16 i=0; i<4; i++)
 715                                 {
 716                                         vertices[i].Pos *= f.visual_scale;
 717                                         vertices[i].Pos += intToFloat(p, BS);
 718                                 }
 719
 720                                 u16 indices[] = {0,1,2,2,3,0};
 721                                 // Add to mesh collector
 722                                 collector.append(tile, vertices, 4, indices, 6);
 723                         }
 724                 break;}
 725                 case NDT_FENCELIKE:
 726                 {
 727                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
 728                         TileSpec tile_nocrack = tile;
 729                         tile_nocrack.material_flags &= ~MATERIAL_FLAG_CRACK;
 730
 731                         // A hack to put wood the right way around in the posts
 732                         ITextureSource *tsrc = data->m_gamedef->tsrc();
 733                         TileSpec tile_rot = tile;
 734                         tile_rot.texture = tsrc->getTexture(tsrc->getTextureName(
 735                                         tile.texture.id) + "^[transformR90");
 736
 737                         u16 l = getInteriorLight(n, 1, data);
 738                         video::SColor c = MapBlock_LightColor(255, l);
 739
 740                         const f32 post_rad=(f32)BS/8;
 741                         const f32 bar_rad=(f32)BS/16;
 742                         const f32 bar_len=(f32)(BS/2)-post_rad;
 743
 744                         v3f pos = intToFloat(p, BS);
 745
 746                         // The post - always present
 747                         aabb3f post(-post_rad,-BS/2,-post_rad,post_rad,BS/2,post_rad);
 748                         post.MinEdge += pos;
 749                         post.MaxEdge += pos;
 750                         f32 postuv[24]={
 751                                         6/16.,6/16.,10/16.,10/16.,
 752                                         6/16.,6/16.,10/16.,10/16.,
 753                                         0/16.,0,4/16.,1,
 754                                         4/16.,0,8/16.,1,
 755                                         8/16.,0,12/16.,1,
 756                                         12/16.,0,16/16.,1};
 757                         makeCuboid(&collector, post, &tile_rot, 1, c, postuv);
 758
 759                         // Now a section of fence, +X, if there's a post there
 760                         v3s16 p2 = p;
 761                         p2.X++;
 762                         MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 763                         const ContentFeatures *f2 = &nodedef->get(n2);
 764                         if(f2->drawtype == NDT_FENCELIKE)
 765                         {
 766                                 aabb3f bar(-bar_len+BS/2,-bar_rad+BS/4,-bar_rad,
 767                                                 bar_len+BS/2,bar_rad+BS/4,bar_rad);
 768                                 bar.MinEdge += pos;
 769                                 bar.MaxEdge += pos;
 770                                 f32 xrailuv[24]={
 771                                         0/16.,2/16.,16/16.,4/16.,
 772                                         0/16.,4/16.,16/16.,6/16.,
 773                                         6/16.,6/16.,8/16.,8/16.,
 774                                         10/16.,10/16.,12/16.,12/16.,
 775                                         0/16.,8/16.,16/16.,10/16.,
 776                                         0/16.,14/16.,16/16.,16/16.};
 777                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 778                                                 c, xrailuv);
 779                                 bar.MinEdge.Y -= BS/2;
 780                                 bar.MaxEdge.Y -= BS/2;
 781                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 782                                                 c, xrailuv);
 783                         }
 784
 785                         // Now a section of fence, +Z, if there's a post there
 786                         p2 = p;
 787                         p2.Z++;
 788                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 789                         f2 = &nodedef->get(n2);
 790                         if(f2->drawtype == NDT_FENCELIKE)
 791                         {
 792                                 aabb3f bar(-bar_rad,-bar_rad+BS/4,-bar_len+BS/2,
 793                                                 bar_rad,bar_rad+BS/4,bar_len+BS/2);
 794                                 bar.MinEdge += pos;
 795                                 bar.MaxEdge += pos;
 796                                 f32 zrailuv[24]={
 797                                         3/16.,1/16.,5/16.,5/16., // cannot rotate; stretch
 798                                         4/16.,1/16.,6/16.,5/16., // for wood texture instead
 799                                         0/16.,9/16.,16/16.,11/16.,
 800                                         0/16.,6/16.,16/16.,8/16.,
 801                                         6/16.,6/16.,8/16.,8/16.,
 802                                         10/16.,10/16.,12/16.,12/16.};
 803                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 804                                                 c, zrailuv);
 805                                 bar.MinEdge.Y -= BS/2;
 806                                 bar.MaxEdge.Y -= BS/2;
 807                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 808                                                 c, zrailuv);
 809                         }
 810                 break;}
 811                 case NDT_RAILLIKE:
 812                 {
 813                         bool is_rail_x [] = { false, false };  /* x-1, x+1 */
 814                         bool is_rail_z [] = { false, false };  /* z-1, z+1 */
 815
 816                         bool is_rail_z_minus_y [] = { false, false };  /* z-1, z+1; y-1 */
 817                         bool is_rail_x_minus_y [] = { false, false };  /* x-1, z+1; y-1 */
 818                         bool is_rail_z_plus_y [] = { false, false };  /* z-1, z+1; y+1 */
 819                         bool is_rail_x_plus_y [] = { false, false };  /* x-1, x+1; y+1 */
 820
 821                         MapNode n_minus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1,y,z));
 822                         MapNode n_plus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1,y,z));
 823                         MapNode n_minus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z-1));
 824                         MapNode n_plus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z+1));
 825                         MapNode n_plus_x_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1, y+1, z));
 826                         MapNode n_plus_x_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1, y-1, z));
 827                         MapNode n_minus_x_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1, y+1, z));
 828                         MapNode n_minus_x_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1, y-1, z));
 829                         MapNode n_plus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z+1));
 830                         MapNode n_minus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z-1));
 831                         MapNode n_plus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z+1));
 832                         MapNode n_minus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z-1));
 833
 834                         content_t thiscontent = n.getContent();
 835                         if(n_minus_x.getContent() == thiscontent)
 836                                 is_rail_x[0] = true;
 837                         if (n_minus_x_minus_y.getContent() == thiscontent)
 838                                 is_rail_x_minus_y[0] = true;
 839                         if(n_minus_x_plus_y.getContent() == thiscontent)
 840                                 is_rail_x_plus_y[0] = true;
 841
 842                         if(n_plus_x.getContent() == thiscontent)
 843                                 is_rail_x[1] = true;
 844                         if (n_plus_x_minus_y.getContent() == thiscontent)
 845                                 is_rail_x_minus_y[1] = true;
 846                         if(n_plus_x_plus_y.getContent() == thiscontent)
 847                                 is_rail_x_plus_y[1] = true;
 848
 849                         if(n_minus_z.getContent() == thiscontent)
 850                                 is_rail_z[0] = true;
 851                         if (n_minus_z_minus_y.getContent() == thiscontent)
 852                                 is_rail_z_minus_y[0] = true;
 853                         if(n_minus_z_plus_y.getContent() == thiscontent)
 854                                 is_rail_z_plus_y[0] = true;
 855
 856                         if(n_plus_z.getContent() == thiscontent)
 857                                 is_rail_z[1] = true;
 858                         if (n_plus_z_minus_y.getContent() == thiscontent)
 859                                 is_rail_z_minus_y[1] = true;
 860                         if(n_plus_z_plus_y.getContent() == thiscontent)
 861                                 is_rail_z_plus_y[1] = true;
 862
 863
 864                         bool is_rail_x_all[] = {false, false};
 865                         bool is_rail_z_all[] = {false, false};
 866                         is_rail_x_all[0]=is_rail_x[0] || is_rail_x_minus_y[0] || is_rail_x_plus_y[0];
 867                         is_rail_x_all[1]=is_rail_x[1] || is_rail_x_minus_y[1] || is_rail_x_plus_y[1];
 868                         is_rail_z_all[0]=is_rail_z[0] || is_rail_z_minus_y[0] || is_rail_z_plus_y[0];
 869                         is_rail_z_all[1]=is_rail_z[1] || is_rail_z_minus_y[1] || is_rail_z_plus_y[1];
 870
 871                         bool is_straight = (is_rail_x_all[0] && is_rail_x_all[1]) || (is_rail_z_all[0] && is_rail_z_all[1]);//is really straight, rails on both sides
 872                         int adjacencies = is_rail_x_all[0] + is_rail_x_all[1] + is_rail_z_all[0] + is_rail_z_all[1];
 873
 874                         if (is_rail_x_plus_y[0] || is_rail_x_plus_y[1] || is_rail_z_plus_y[0] || is_rail_z_plus_y[1]) //is straight because sloped
 875                         {
 876                                 adjacencies = 5; //5 means sloped
 877                                 is_straight = true;
 878                         }
 879
 880                         // Assign textures
 881                         u8 tileindex = 0; // straight
 882                         if(adjacencies < 2)
 883                                 tileindex = 0; // straight
 884                         else if(adjacencies == 2)
 885                         {
 886                                 if(is_straight)
 887                                         tileindex = 0; // straight
 888                                 else
 889                                         tileindex = 1; // curved
 890                         }
 891                         else if(adjacencies == 3)
 892                                 tileindex = 2; // t-junction
 893                         else if(adjacencies == 4)
 894                                 tileindex = 3; // crossing
 895
 896                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
 897                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 898                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 899
 900                         AtlasPointer ap = tile.texture;
 901
 902                         u16 l = getInteriorLight(n, 0, data);
 903                         video::SColor c = MapBlock_LightColor(255, l);
 904
 905                         float d = (float)BS/64;
 906
 907                         char g=-1;
 908                         if (is_rail_x_plus_y[0] || is_rail_x_plus_y[1] || is_rail_z_plus_y[0] || is_rail_z_plus_y[1])
 909                                 g=1; //Object is at a slope
 910
 911                         video::S3DVertex vertices[4] =
 912                         {
 913                                         video::S3DVertex(-BS/2,-BS/2+d,-BS/2, 0,0,0, c,
 914                                                         ap.x0(), ap.y1()),
 915                                         video::S3DVertex(BS/2,-BS/2+d,-BS/2, 0,0,0, c,
 916                                                         ap.x1(), ap.y1()),
 917                                         video::S3DVertex(BS/2,g*BS/2+d,BS/2, 0,0,0, c,
 918                                                         ap.x1(), ap.y0()),
 919                                         video::S3DVertex(-BS/2,g*BS/2+d,BS/2, 0,0,0, c,
 920                                                         ap.x0(), ap.y0()),
 921                         };
 922
 923
 924                         // Rotate textures
 925                         int angle = 0;
 926
 927                         if(adjacencies == 1)
 928                         {
 929                                 if(is_rail_x_all[0] || is_rail_x_all[1])
 930                                         angle = 90;
 931                         }
 932                         if(adjacencies == 2)
 933                         {
 934                                 if(is_rail_x_all[0] && is_rail_x_all[1])
 935                                 {
 936                                         angle = 90;
 937                                 }
 938                                 if(is_rail_z_all[0] && is_rail_z_all[1])
 939                                 {
 940                                         if (n_minus_z_plus_y.getContent() == thiscontent) angle = 180;
 941                                 }
 942                                 else if(is_rail_x_all[0] && is_rail_z_all[0])
 943                                         angle = 270;
 944                                 else if(is_rail_x_all[0] && is_rail_z_all[1])
 945                                         angle = 180;
 946                                 else if(is_rail_x_all[1] && is_rail_z_all[1])
 947                                         angle = 90;
 948                         }
 949                         if(adjacencies == 3)
 950                         {
 951                                 if(!is_rail_x_all[0])
 952                                         angle=0;
 953                                 if(!is_rail_x_all[1])
 954                                         angle=180;
 955                                 if(!is_rail_z_all[0])
 956                                         angle=90;
 957                                 if(!is_rail_z_all[1])
 958                                         angle=270;
 959                         }
 960                         //adjacencies 4: Crossing
 961                         if(adjacencies == 5) //sloped
 962                         {
 963                                 if(is_rail_z_plus_y[0])
 964                                         angle = 180;
 965                                 if(is_rail_x_plus_y[0])
 966                                         angle = 90;
 967                                 if(is_rail_x_plus_y[1])
 968                                         angle = -90;
 969                         }
 970
 971                         if(angle != 0) {
 972                                 for(u16 i=0; i<4; i++)
 973                                         vertices[i].Pos.rotateXZBy(angle);
 974                         }
 975
 976                         for(s32 i=0; i<4; i++)
 977                         {
 978                                 vertices[i].Pos += intToFloat(p, BS);
 979                         }
 980
 981                         u16 indices[] = {0,1,2,2,3,0};
 982                         collector.append(tile, vertices, 4, indices, 6);
 983                 break;}
 984                 }
 985         }
 986 }
 987