src/content_mapblock.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 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 Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser 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 #include "util/numeric.h"
  22 #include "util/directiontables.h"
  23 #include "mapblock_mesh.h" // For MapBlock_LightColor() and MeshCollector
  24 #include "settings.h"
  25 #include "nodedef.h"
  26 #include "client/tile.h"
  27 #include "mesh.h"
  28 #include <IMeshManipulator.h>
  29 #include "gamedef.h"
  30 #include "log.h"
  31
  32
  33 // Create a cuboid.
  34 //  collector - the MeshCollector for the resulting polygons
  35 //  box       - the position and size of the box
  36 //  tiles     - the tiles (materials) to use (for all 6 faces)
  37 //  tilecount - number of entries in tiles, 1<=tilecount<=6
  38 //  c         - vertex colour - used for all
  39 //  txc       - texture coordinates - this is a list of texture coordinates
  40 //              for the opposite corners of each face - therefore, there
  41 //              should be (2+2)*6=24 values in the list. Alternatively, pass
  42 //              NULL to use the entire texture for each face. The order of
  43 //              the faces in the list is up-down-right-left-back-front
  44 //              (compatible with ContentFeatures). If you specified 0,0,1,1
  45 //              for each face, that would be the same as passing NULL.
  46 void makeCuboid(MeshCollector *collector, const aabb3f &box,
  47         TileSpec *tiles, int tilecount, video::SColor &c, const f32* txc)
  48 {
  49         assert(tilecount >= 1 && tilecount <= 6); // pre-condition
  50
  51         v3f min = box.MinEdge;
  52         v3f max = box.MaxEdge;
  53
  54
  55
  56         if(txc == NULL) {
  57                 static const f32 txc_default[24] = {
  58                         0,0,1,1,
  59                         0,0,1,1,
  60                         0,0,1,1,
  61                         0,0,1,1,
  62                         0,0,1,1,
  63                         0,0,1,1
  64                 };
  65                 txc = txc_default;
  66         }
  67
  68         video::S3DVertex vertices[24] =
  69         {
  70                 // up
  71                 video::S3DVertex(min.X,max.Y,max.Z, 0,1,0, c, txc[0],txc[1]),
  72                 video::S3DVertex(max.X,max.Y,max.Z, 0,1,0, c, txc[2],txc[1]),
  73                 video::S3DVertex(max.X,max.Y,min.Z, 0,1,0, c, txc[2],txc[3]),
  74                 video::S3DVertex(min.X,max.Y,min.Z, 0,1,0, c, txc[0],txc[3]),
  75                 // down
  76                 video::S3DVertex(min.X,min.Y,min.Z, 0,-1,0, c, txc[4],txc[5]),
  77                 video::S3DVertex(max.X,min.Y,min.Z, 0,-1,0, c, txc[6],txc[5]),
  78                 video::S3DVertex(max.X,min.Y,max.Z, 0,-1,0, c, txc[6],txc[7]),
  79                 video::S3DVertex(min.X,min.Y,max.Z, 0,-1,0, c, txc[4],txc[7]),
  80                 // right
  81                 video::S3DVertex(max.X,max.Y,min.Z, 1,0,0, c, txc[ 8],txc[9]),
  82                 video::S3DVertex(max.X,max.Y,max.Z, 1,0,0, c, txc[10],txc[9]),
  83                 video::S3DVertex(max.X,min.Y,max.Z, 1,0,0, c, txc[10],txc[11]),
  84                 video::S3DVertex(max.X,min.Y,min.Z, 1,0,0, c, txc[ 8],txc[11]),
  85                 // left
  86                 video::S3DVertex(min.X,max.Y,max.Z, -1,0,0, c, txc[12],txc[13]),
  87                 video::S3DVertex(min.X,max.Y,min.Z, -1,0,0, c, txc[14],txc[13]),
  88                 video::S3DVertex(min.X,min.Y,min.Z, -1,0,0, c, txc[14],txc[15]),
  89                 video::S3DVertex(min.X,min.Y,max.Z, -1,0,0, c, txc[12],txc[15]),
  90                 // back
  91                 video::S3DVertex(max.X,max.Y,max.Z, 0,0,1, c, txc[16],txc[17]),
  92                 video::S3DVertex(min.X,max.Y,max.Z, 0,0,1, c, txc[18],txc[17]),
  93                 video::S3DVertex(min.X,min.Y,max.Z, 0,0,1, c, txc[18],txc[19]),
  94                 video::S3DVertex(max.X,min.Y,max.Z, 0,0,1, c, txc[16],txc[19]),
  95                 // front
  96                 video::S3DVertex(min.X,max.Y,min.Z, 0,0,-1, c, txc[20],txc[21]),
  97                 video::S3DVertex(max.X,max.Y,min.Z, 0,0,-1, c, txc[22],txc[21]),
  98                 video::S3DVertex(max.X,min.Y,min.Z, 0,0,-1, c, txc[22],txc[23]),
  99                 video::S3DVertex(min.X,min.Y,min.Z, 0,0,-1, c, txc[20],txc[23]),
 100         };
 101
 102         for(int i = 0; i < 6; i++)
 103                                 {
 104                                 switch (tiles[MYMIN(i, tilecount-1)].rotation)
 105                                 {
 106                                 case 0:
 107                                         break;
 108                                 case 1: //R90
 109                                         for (int x = 0; x < 4; x++)
 110                                                 vertices[i*4+x].TCoords.rotateBy(90,irr::core::vector2df(0, 0));
 111                                         break;
 112                                 case 2: //R180
 113                                         for (int x = 0; x < 4; x++)
 114                                                 vertices[i*4+x].TCoords.rotateBy(180,irr::core::vector2df(0, 0));
 115                                         break;
 116                                 case 3: //R270
 117                                         for (int x = 0; x < 4; x++)
 118                                                 vertices[i*4+x].TCoords.rotateBy(270,irr::core::vector2df(0, 0));
 119                                         break;
 120                                 case 4: //FXR90
 121                                         for (int x = 0; x < 4; x++){
 122                                                 vertices[i*4+x].TCoords.X = 1.0 - vertices[i*4+x].TCoords.X;
 123                                                 vertices[i*4+x].TCoords.rotateBy(90,irr::core::vector2df(0, 0));
 124                                         }
 125                                         break;
 126                                 case 5: //FXR270
 127                                         for (int x = 0; x < 4; x++){
 128                                                 vertices[i*4+x].TCoords.X = 1.0 - vertices[i*4+x].TCoords.X;
 129                                                 vertices[i*4+x].TCoords.rotateBy(270,irr::core::vector2df(0, 0));
 130                                         }
 131                                         break;
 132                                 case 6: //FYR90
 133                                         for (int x = 0; x < 4; x++){
 134                                                 vertices[i*4+x].TCoords.Y = 1.0 - vertices[i*4+x].TCoords.Y;
 135                                                 vertices[i*4+x].TCoords.rotateBy(90,irr::core::vector2df(0, 0));
 136                                         }
 137                                         break;
 138                                 case 7: //FYR270
 139                                         for (int x = 0; x < 4; x++){
 140                                                 vertices[i*4+x].TCoords.Y = 1.0 - vertices[i*4+x].TCoords.Y;
 141                                                 vertices[i*4+x].TCoords.rotateBy(270,irr::core::vector2df(0, 0));
 142                                         }
 143                                         break;
 144                                 case 8: //FX
 145                                         for (int x = 0; x < 4; x++){
 146                                                 vertices[i*4+x].TCoords.X = 1.0 - vertices[i*4+x].TCoords.X;
 147                                         }
 148                                         break;
 149                                 case 9: //FY
 150                                         for (int x = 0; x < 4; x++){
 151                                                 vertices[i*4+x].TCoords.Y = 1.0 - vertices[i*4+x].TCoords.Y;
 152                                         }
 153                                         break;
 154                                 default:
 155                                         break;
 156                                 }
 157                         }
 158         u16 indices[] = {0,1,2,2,3,0};
 159         // Add to mesh collector
 160         for (s32 j = 0; j < 24; j += 4) {
 161                 int tileindex = MYMIN(j / 4, tilecount - 1);
 162                 collector->append(tiles[tileindex], vertices + j, 4, indices, 6);
 163         }
 164 }
 165
 166 /*
 167         TODO: Fix alpha blending for special nodes
 168         Currently only the last element rendered is blended correct
 169 */
 170 void mapblock_mesh_generate_special(MeshMakeData *data,
 171                 MeshCollector &collector)
 172 {
 173         INodeDefManager *nodedef = data->m_gamedef->ndef();
 174         scene::ISceneManager* smgr = data->m_gamedef->getSceneManager();
 175         scene::IMeshManipulator* meshmanip = smgr->getMeshManipulator();
 176
 177         // 0ms
 178         //TimeTaker timer("mapblock_mesh_generate_special()");
 179
 180         /*
 181                 Some settings
 182         */
 183         bool enable_mesh_cache  = g_settings->getBool("enable_mesh_cache");
 184         bool new_style_water = g_settings->getBool("new_style_water");
 185
 186         float node_liquid_level = 1.0;
 187         if (new_style_water)
 188                 node_liquid_level = 0.85;
 189
 190         v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;
 191
 192         for(s16 z = 0; z < MAP_BLOCKSIZE; z++)
 193         for(s16 y = 0; y < MAP_BLOCKSIZE; y++)
 194         for(s16 x = 0; x < MAP_BLOCKSIZE; x++)
 195         {
 196                 v3s16 p(x,y,z);
 197
 198                 MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + p);
 199                 const ContentFeatures &f = nodedef->get(n);
 200
 201                 // Only solidness=0 stuff is drawn here
 202                 if(f.solidness != 0)
 203                         continue;
 204
 205                 switch(f.drawtype){
 206                 default:
 207                         infostream << "Got " << f.drawtype << std::endl;
 208                         FATAL_ERROR("Unknown drawtype");
 209                         break;
 210                 case NDT_AIRLIKE:
 211                         break;
 212                 case NDT_LIQUID:
 213                 {
 214                         /*
 215                                 Add water sources to mesh if using new style
 216                         */
 217                         TileSpec tile_liquid = f.special_tiles[0];
 218                         TileSpec tile_liquid_bfculled = getNodeTile(n, p, v3s16(0,0,0), data);
 219
 220                         bool top_is_same_liquid = false;
 221                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 222                         content_t c_flowing = nodedef->getId(f.liquid_alternative_flowing);
 223                         content_t c_source = nodedef->getId(f.liquid_alternative_source);
 224                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 225                                 top_is_same_liquid = true;
 226
 227                         u16 l = getInteriorLight(n, 0, nodedef);
 228                         video::SColor c = MapBlock_LightColor(f.alpha, l, f.light_source);
 229
 230                         /*
 231                                 Generate sides
 232                          */
 233                         v3s16 side_dirs[4] = {
 234                                 v3s16(1,0,0),
 235                                 v3s16(-1,0,0),
 236                                 v3s16(0,0,1),
 237                                 v3s16(0,0,-1),
 238                         };
 239                         for(u32 i=0; i<4; i++)
 240                         {
 241                                 v3s16 dir = side_dirs[i];
 242
 243                                 MapNode neighbor = data->m_vmanip.getNodeNoEx(blockpos_nodes + p + dir);
 244                                 content_t neighbor_content = neighbor.getContent();
 245                                 const ContentFeatures &n_feat = nodedef->get(neighbor_content);
 246                                 MapNode n_top = data->m_vmanip.getNodeNoEx(blockpos_nodes + p + dir+ v3s16(0,1,0));
 247                                 content_t n_top_c = n_top.getContent();
 248
 249                                 if(neighbor_content == CONTENT_IGNORE)
 250                                         continue;
 251
 252                                 /*
 253                                         If our topside is liquid and neighbor's topside
 254                                         is liquid, don't draw side face
 255                                 */
 256                                 if(top_is_same_liquid && (n_top_c == c_flowing ||
 257                                                 n_top_c == c_source || n_top_c == CONTENT_IGNORE))
 258                                         continue;
 259
 260                                 // Don't draw face if neighbor is blocking the view
 261                                 if(n_feat.solidness == 2)
 262                                         continue;
 263
 264                                 bool neighbor_is_same_liquid = (neighbor_content == c_source
 265                                                 || neighbor_content == c_flowing);
 266
 267                                 // Don't draw any faces if neighbor same is liquid and top is
 268                                 // same liquid
 269                                 if(neighbor_is_same_liquid && !top_is_same_liquid)
 270                                         continue;
 271
 272                                 // Use backface culled material if neighbor doesn't have a
 273                                 // solidness of 0
 274                                 const TileSpec *current_tile = &tile_liquid;
 275                                 if(n_feat.solidness != 0 || n_feat.visual_solidness != 0)
 276                                         current_tile = &tile_liquid_bfculled;
 277
 278                                 video::S3DVertex vertices[4] =
 279                                 {
 280                                         video::S3DVertex(-BS/2,0,BS/2,0,0,0, c, 0,1),
 281                                         video::S3DVertex(BS/2,0,BS/2,0,0,0, c, 1,1),
 282                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
 283                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),
 284                                 };
 285
 286                                 /*
 287                                         If our topside is liquid, set upper border of face
 288                                         at upper border of node
 289                                 */
 290                                 if(top_is_same_liquid)
 291                                 {
 292                                         vertices[2].Pos.Y = 0.5*BS;
 293                                         vertices[3].Pos.Y = 0.5*BS;
 294                                 }
 295                                 /*
 296                                         Otherwise upper position of face is liquid level
 297                                 */
 298                                 else
 299                                 {
 300                                         vertices[2].Pos.Y = (node_liquid_level-0.5)*BS;
 301                                         vertices[3].Pos.Y = (node_liquid_level-0.5)*BS;
 302                                 }
 303                                 /*
 304                                         If neighbor is liquid, lower border of face is liquid level
 305                                 */
 306                                 if(neighbor_is_same_liquid)
 307                                 {
 308                                         vertices[0].Pos.Y = (node_liquid_level-0.5)*BS;
 309                                         vertices[1].Pos.Y = (node_liquid_level-0.5)*BS;
 310                                 }
 311                                 /*
 312                                         If neighbor is not liquid, lower border of face is
 313                                         lower border of node
 314                                 */
 315                                 else
 316                                 {
 317                                         vertices[0].Pos.Y = -0.5*BS;
 318                                         vertices[1].Pos.Y = -0.5*BS;
 319                                 }
 320
 321                                 for(s32 j=0; j<4; j++)
 322                                 {
 323                                         if(dir == v3s16(0,0,1))
 324                                                 vertices[j].Pos.rotateXZBy(0);
 325                                         if(dir == v3s16(0,0,-1))
 326                                                 vertices[j].Pos.rotateXZBy(180);
 327                                         if(dir == v3s16(-1,0,0))
 328                                                 vertices[j].Pos.rotateXZBy(90);
 329                                         if(dir == v3s16(1,0,-0))
 330                                                 vertices[j].Pos.rotateXZBy(-90);
 331
 332                                         // Do this to not cause glitches when two liquids are
 333                                         // side-by-side
 334                                         /*if(neighbor_is_same_liquid == false){
 335                                                 vertices[j].Pos.X *= 0.98;
 336                                                 vertices[j].Pos.Z *= 0.98;
 337                                         }*/
 338
 339                                         vertices[j].Pos += intToFloat(p, BS);
 340                                 }
 341
 342                                 u16 indices[] = {0,1,2,2,3,0};
 343                                 // Add to mesh collector
 344                                 collector.append(*current_tile, vertices, 4, indices, 6);
 345                         }
 346
 347                         /*
 348                                 Generate top
 349                          */
 350                         if(top_is_same_liquid)
 351                                 continue;
 352
 353                         video::S3DVertex vertices[4] =
 354                         {
 355                                 video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
 356                                 video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,1),
 357                                 video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c, 1,0),
 358                                 video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,0),
 359                         };
 360
 361                         v3f offset(p.X*BS, p.Y*BS + (-0.5+node_liquid_level)*BS, p.Z*BS);
 362                         for(s32 i=0; i<4; i++)
 363                         {
 364                                 vertices[i].Pos += offset;
 365                         }
 366
 367                         u16 indices[] = {0,1,2,2,3,0};
 368                         // Add to mesh collector
 369                         collector.append(tile_liquid, vertices, 4, indices, 6);
 370                 break;}
 371                 case NDT_FLOWINGLIQUID:
 372                 {
 373                         /*
 374                                 Add flowing liquid to mesh
 375                         */
 376                         TileSpec tile_liquid = f.special_tiles[0];
 377                         TileSpec tile_liquid_bfculled = f.special_tiles[1];
 378
 379                         bool top_is_same_liquid = false;
 380                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 381                         content_t c_flowing = nodedef->getId(f.liquid_alternative_flowing);
 382                         content_t c_source = nodedef->getId(f.liquid_alternative_source);
 383                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 384                                 top_is_same_liquid = true;
 385
 386                         u16 l = 0;
 387                         // If this liquid emits light and doesn't contain light, draw
 388                         // it at what it emits, for an increased effect
 389                         u8 light_source = nodedef->get(n).light_source;
 390                         if(light_source != 0){
 391                                 l = decode_light(light_source);
 392                                 l = l | (l<<8);
 393                         }
 394                         // Use the light of the node on top if possible
 395                         else if(nodedef->get(ntop).param_type == CPT_LIGHT)
 396                                 l = getInteriorLight(ntop, 0, nodedef);
 397                         // Otherwise use the light of this node (the liquid)
 398                         else
 399                                 l = getInteriorLight(n, 0, nodedef);
 400                         video::SColor c = MapBlock_LightColor(f.alpha, l, f.light_source);
 401
 402                         u8 range = rangelim(nodedef->get(c_flowing).liquid_range, 1, 8);
 403
 404                         // Neighbor liquid levels (key = relative position)
 405                         // Includes current node
 406                         std::map<v3s16, f32> neighbor_levels;
 407                         std::map<v3s16, content_t> neighbor_contents;
 408                         std::map<v3s16, u8> neighbor_flags;
 409                         const u8 neighborflag_top_is_same_liquid = 0x01;
 410                         v3s16 neighbor_dirs[9] = {
 411                                 v3s16(0,0,0),
 412                                 v3s16(0,0,1),
 413                                 v3s16(0,0,-1),
 414                                 v3s16(1,0,0),
 415                                 v3s16(-1,0,0),
 416                                 v3s16(1,0,1),
 417                                 v3s16(-1,0,-1),
 418                                 v3s16(1,0,-1),
 419                                 v3s16(-1,0,1),
 420                         };
 421                         for(u32 i=0; i<9; i++)
 422                         {
 423                                 content_t content = CONTENT_AIR;
 424                                 float level = -0.5 * BS;
 425                                 u8 flags = 0;
 426                                 // Check neighbor
 427                                 v3s16 p2 = p + neighbor_dirs[i];
 428                                 MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 429                                 if(n2.getContent() != CONTENT_IGNORE)
 430                                 {
 431                                         content = n2.getContent();
 432
 433                                         if(n2.getContent() == c_source)
 434                                                 level = (-0.5+node_liquid_level) * BS;
 435                                         else if(n2.getContent() == c_flowing){
 436                                                 u8 liquid_level = (n2.param2&LIQUID_LEVEL_MASK);
 437                                                 if (liquid_level <= LIQUID_LEVEL_MAX+1-range)
 438                                                         liquid_level = 0;
 439                                                 else
 440                                                         liquid_level -= (LIQUID_LEVEL_MAX+1-range);
 441                                                 level = (-0.5 + ((float)liquid_level+ 0.5) / (float)range * node_liquid_level) * BS;
 442                                         }
 443
 444                                         // Check node above neighbor.
 445                                         // NOTE: This doesn't get executed if neighbor
 446                                         //       doesn't exist
 447                                         p2.Y += 1;
 448                                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 449                                         if(n2.getContent() == c_source ||
 450                                                         n2.getContent() == c_flowing)
 451                                                 flags |= neighborflag_top_is_same_liquid;
 452                                 }
 453
 454                                 neighbor_levels[neighbor_dirs[i]] = level;
 455                                 neighbor_contents[neighbor_dirs[i]] = content;
 456                                 neighbor_flags[neighbor_dirs[i]] = flags;
 457                         }
 458
 459                         // Corner heights (average between four liquids)
 460                         f32 corner_levels[4];
 461
 462                         v3s16 halfdirs[4] = {
 463                                 v3s16(0,0,0),
 464                                 v3s16(1,0,0),
 465                                 v3s16(1,0,1),
 466                                 v3s16(0,0,1),
 467                         };
 468                         for(u32 i=0; i<4; i++)
 469                         {
 470                                 v3s16 cornerdir = halfdirs[i];
 471                                 float cornerlevel = 0;
 472                                 u32 valid_count = 0;
 473                                 u32 air_count = 0;
 474                                 for(u32 j=0; j<4; j++)
 475                                 {
 476                                         v3s16 neighbordir = cornerdir - halfdirs[j];
 477                                         content_t content = neighbor_contents[neighbordir];
 478                                         // If top is liquid, draw starting from top of node
 479                                         if(neighbor_flags[neighbordir] &
 480                                                         neighborflag_top_is_same_liquid)
 481                                         {
 482                                                 cornerlevel = 0.5*BS;
 483                                                 valid_count = 1;
 484                                                 break;
 485                                         }
 486                                         // Source is always the same height
 487                                         else if(content == c_source)
 488                                         {
 489                                                 cornerlevel = (-0.5+node_liquid_level)*BS;
 490                                                 valid_count = 1;
 491                                                 break;
 492                                         }
 493                                         // Flowing liquid has level information
 494                                         else if(content == c_flowing)
 495                                         {
 496                                                 cornerlevel += neighbor_levels[neighbordir];
 497                                                 valid_count++;
 498                                         }
 499                                         else if(content == CONTENT_AIR)
 500                                         {
 501                                                 air_count++;
 502                                         }
 503                                 }
 504                                 if(air_count >= 2)
 505                                         cornerlevel = -0.5*BS+0.2;
 506                                 else if(valid_count > 0)
 507                                         cornerlevel /= valid_count;
 508                                 corner_levels[i] = cornerlevel;
 509                         }
 510
 511                         /*
 512                                 Generate sides
 513                         */
 514
 515                         v3s16 side_dirs[4] = {
 516                                 v3s16(1,0,0),
 517                                 v3s16(-1,0,0),
 518                                 v3s16(0,0,1),
 519                                 v3s16(0,0,-1),
 520                         };
 521                         s16 side_corners[4][2] = {
 522                                 {1, 2},
 523                                 {3, 0},
 524                                 {2, 3},
 525                                 {0, 1},
 526                         };
 527                         for(u32 i=0; i<4; i++)
 528                         {
 529                                 v3s16 dir = side_dirs[i];
 530
 531                                 /*
 532                                         If our topside is liquid and neighbor's topside
 533                                         is liquid, don't draw side face
 534                                 */
 535                                 if(top_is_same_liquid &&
 536                                                 neighbor_flags[dir] & neighborflag_top_is_same_liquid)
 537                                         continue;
 538
 539                                 content_t neighbor_content = neighbor_contents[dir];
 540                                 const ContentFeatures &n_feat = nodedef->get(neighbor_content);
 541
 542                                 // Don't draw face if neighbor is blocking the view
 543                                 if(n_feat.solidness == 2)
 544                                         continue;
 545
 546                                 bool neighbor_is_same_liquid = (neighbor_content == c_source
 547                                                 || neighbor_content == c_flowing);
 548
 549                                 // Don't draw any faces if neighbor same is liquid and top is
 550                                 // same liquid
 551                                 if(neighbor_is_same_liquid == true
 552                                                 && top_is_same_liquid == false)
 553                                         continue;
 554
 555                                 // Use backface culled material if neighbor doesn't have a
 556                                 // solidness of 0
 557                                 const TileSpec *current_tile = &tile_liquid;
 558                                 if(n_feat.solidness != 0 || n_feat.visual_solidness != 0)
 559                                         current_tile = &tile_liquid_bfculled;
 560
 561                                 video::S3DVertex vertices[4] =
 562                                 {
 563                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
 564                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,1),
 565                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
 566                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),
 567                                 };
 568
 569                                 /*
 570                                         If our topside is liquid, set upper border of face
 571                                         at upper border of node
 572                                 */
 573                                 if(top_is_same_liquid)
 574                                 {
 575                                         vertices[2].Pos.Y = 0.5*BS;
 576                                         vertices[3].Pos.Y = 0.5*BS;
 577                                 }
 578                                 /*
 579                                         Otherwise upper position of face is corner levels
 580                                 */
 581                                 else
 582                                 {
 583                                         vertices[2].Pos.Y = corner_levels[side_corners[i][0]];
 584                                         vertices[3].Pos.Y = corner_levels[side_corners[i][1]];
 585                                 }
 586
 587                                 /*
 588                                         If neighbor is liquid, lower border of face is corner
 589                                         liquid levels
 590                                 */
 591                                 if(neighbor_is_same_liquid)
 592                                 {
 593                                         vertices[0].Pos.Y = corner_levels[side_corners[i][1]];
 594                                         vertices[1].Pos.Y = corner_levels[side_corners[i][0]];
 595                                 }
 596                                 /*
 597                                         If neighbor is not liquid, lower border of face is
 598                                         lower border of node
 599                                 */
 600                                 else
 601                                 {
 602                                         vertices[0].Pos.Y = -0.5*BS;
 603                                         vertices[1].Pos.Y = -0.5*BS;
 604                                 }
 605
 606                                 for(s32 j=0; j<4; j++)
 607                                 {
 608                                         if(dir == v3s16(0,0,1))
 609                                                 vertices[j].Pos.rotateXZBy(0);
 610                                         if(dir == v3s16(0,0,-1))
 611                                                 vertices[j].Pos.rotateXZBy(180);
 612                                         if(dir == v3s16(-1,0,0))
 613                                                 vertices[j].Pos.rotateXZBy(90);
 614                                         if(dir == v3s16(1,0,-0))
 615                                                 vertices[j].Pos.rotateXZBy(-90);
 616
 617                                         // Do this to not cause glitches when two liquids are
 618                                         // side-by-side
 619                                         /*if(neighbor_is_same_liquid == false){
 620                                                 vertices[j].Pos.X *= 0.98;
 621                                                 vertices[j].Pos.Z *= 0.98;
 622                                         }*/
 623
 624                                         vertices[j].Pos += intToFloat(p, BS);
 625                                 }
 626
 627                                 u16 indices[] = {0,1,2,2,3,0};
 628                                 // Add to mesh collector
 629                                 collector.append(*current_tile, vertices, 4, indices, 6);
 630                         }
 631
 632                         /*
 633                                 Generate top side, if appropriate
 634                         */
 635
 636                         if(top_is_same_liquid == false)
 637                         {
 638                                 video::S3DVertex vertices[4] =
 639                                 {
 640                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
 641                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,1),
 642                                         video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c, 1,0),
 643                                         video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,0),
 644                                 };
 645
 646                                 // To get backface culling right, the vertices need to go
 647                                 // clockwise around the front of the face. And we happened to
 648                                 // calculate corner levels in exact reverse order.
 649                                 s32 corner_resolve[4] = {3,2,1,0};
 650
 651                                 for(s32 i=0; i<4; i++)
 652                                 {
 653                                         //vertices[i].Pos.Y += liquid_level;
 654                                         //vertices[i].Pos.Y += neighbor_levels[v3s16(0,0,0)];
 655                                         s32 j = corner_resolve[i];
 656                                         vertices[i].Pos.Y += corner_levels[j];
 657                                         vertices[i].Pos += intToFloat(p, BS);
 658                                 }
 659
 660                                 // Default downwards-flowing texture animation goes from
 661                                 // -Z towards +Z, thus the direction is +Z.
 662                                 // Rotate texture to make animation go in flow direction
 663                                 // Positive if liquid moves towards +Z
 664                                 f32 dz = (corner_levels[side_corners[3][0]] +
 665                                                 corner_levels[side_corners[3][1]]) -
 666                                                 (corner_levels[side_corners[2][0]] +
 667                                                 corner_levels[side_corners[2][1]]);
 668                                 // Positive if liquid moves towards +X
 669                                 f32 dx = (corner_levels[side_corners[1][0]] +
 670                                                 corner_levels[side_corners[1][1]]) -
 671                                                 (corner_levels[side_corners[0][0]] +
 672                                                 corner_levels[side_corners[0][1]]);
 673                                 f32 tcoord_angle = atan2(dz, dx) * core::RADTODEG ;
 674                                 v2f tcoord_center(0.5, 0.5);
 675                                 v2f tcoord_translate(
 676                                                 blockpos_nodes.Z + z,
 677                                                 blockpos_nodes.X + x);
 678                                 tcoord_translate.rotateBy(tcoord_angle);
 679                                 tcoord_translate.X -= floor(tcoord_translate.X);
 680                                 tcoord_translate.Y -= floor(tcoord_translate.Y);
 681
 682                                 for(s32 i=0; i<4; i++)
 683                                 {
 684                                         vertices[i].TCoords.rotateBy(
 685                                                         tcoord_angle,
 686                                                         tcoord_center);
 687                                         vertices[i].TCoords += tcoord_translate;
 688                                 }
 689
 690                                 v2f t = vertices[0].TCoords;
 691                                 vertices[0].TCoords = vertices[2].TCoords;
 692                                 vertices[2].TCoords = t;
 693
 694                                 u16 indices[] = {0,1,2,2,3,0};
 695                                 // Add to mesh collector
 696                                 collector.append(tile_liquid, vertices, 4, indices, 6);
 697                         }
 698                 break;}
 699                 case NDT_GLASSLIKE:
 700                 {
 701                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
 702
 703                         u16 l = getInteriorLight(n, 1, nodedef);
 704                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
 705
 706                         for(u32 j=0; j<6; j++)
 707                         {
 708                                 // Check this neighbor
 709                                 v3s16 dir = g_6dirs[j];
 710                                 v3s16 n2p = blockpos_nodes + p + dir;
 711                                 MapNode n2 = data->m_vmanip.getNodeNoEx(n2p);
 712                                 // Don't make face if neighbor is of same type
 713                                 if(n2.getContent() == n.getContent())
 714                                         continue;
 715
 716                                 // The face at Z+
 717                                 video::S3DVertex vertices[4] = {
 718                                         video::S3DVertex(-BS/2,-BS/2,BS/2, dir.X,dir.Y,dir.Z, c, 1,1),
 719                                         video::S3DVertex(BS/2,-BS/2,BS/2, dir.X,dir.Y,dir.Z, c, 0,1),
 720                                         video::S3DVertex(BS/2,BS/2,BS/2, dir.X,dir.Y,dir.Z, c, 0,0),
 721                                         video::S3DVertex(-BS/2,BS/2,BS/2, dir.X,dir.Y,dir.Z, c, 1,0),
 722                                 };
 723
 724                                 // Rotations in the g_6dirs format
 725                                 if(j == 0) // Z+
 726                                         for(u16 i=0; i<4; i++)
 727                                                 vertices[i].Pos.rotateXZBy(0);
 728                                 else if(j == 1) // Y+
 729                                         for(u16 i=0; i<4; i++)
 730                                                 vertices[i].Pos.rotateYZBy(-90);
 731                                 else if(j == 2) // X+
 732                                         for(u16 i=0; i<4; i++)
 733                                                 vertices[i].Pos.rotateXZBy(-90);
 734                                 else if(j == 3) // Z-
 735                                         for(u16 i=0; i<4; i++)
 736                                                 vertices[i].Pos.rotateXZBy(180);
 737                                 else if(j == 4) // Y-
 738                                         for(u16 i=0; i<4; i++)
 739                                                 vertices[i].Pos.rotateYZBy(90);
 740                                 else if(j == 5) // X-
 741                                         for(u16 i=0; i<4; i++)
 742                                                 vertices[i].Pos.rotateXZBy(90);
 743
 744                                 for(u16 i=0; i<4; i++){
 745                                         vertices[i].Pos += intToFloat(p, BS);
 746                                 }
 747
 748                                 u16 indices[] = {0,1,2,2,3,0};
 749                                 // Add to mesh collector
 750                                 collector.append(tile, vertices, 4, indices, 6);
 751                         }
 752                 break;}
 753                 case NDT_GLASSLIKE_FRAMED_OPTIONAL:
 754                         // This is always pre-converted to something else
 755                         FATAL_ERROR("NDT_GLASSLIKE_FRAMED_OPTIONAL not pre-converted as expected");
 756                         break;
 757                 case NDT_GLASSLIKE_FRAMED:
 758                 {
 759                         static const v3s16 dirs[6] = {
 760                                 v3s16( 0, 1, 0),
 761                                 v3s16( 0,-1, 0),
 762                                 v3s16( 1, 0, 0),
 763                                 v3s16(-1, 0, 0),
 764                                 v3s16( 0, 0, 1),
 765                                 v3s16( 0, 0,-1)
 766                         };
 767
 768                         u8 i;
 769                         TileSpec tiles[6];
 770                         for (i = 0; i < 6; i++)
 771                                 tiles[i] = getNodeTile(n, p, dirs[i], data);
 772
 773                         TileSpec glass_tiles[6];
 774                         if (tiles[1].texture && tiles[2].texture && tiles[3].texture) {
 775                                 glass_tiles[0] = tiles[2];
 776                                 glass_tiles[1] = tiles[3];
 777                                 glass_tiles[2] = tiles[1];
 778                                 glass_tiles[3] = tiles[1];
 779                                 glass_tiles[4] = tiles[1];
 780                                 glass_tiles[5] = tiles[1];
 781                         } else {
 782                                 for (i = 0; i < 6; i++)
 783                                         glass_tiles[i] = tiles[1];
 784                         }
 785
 786                         u8 param2 = n.getParam2();
 787                         bool H_merge = ! bool(param2 & 128);
 788                         bool V_merge = ! bool(param2 & 64);
 789                         param2  = param2 & 63;
 790
 791                         u16 l = getInteriorLight(n, 1, nodedef);
 792                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
 793                         v3f pos = intToFloat(p, BS);
 794                         static const float a = BS / 2;
 795                         static const float g = a - 0.003;
 796                         static const float b = .876 * ( BS / 2 );
 797
 798                         static const aabb3f frame_edges[12] = {
 799                                 aabb3f( b, b,-a, a, a, a), // y+
 800                                 aabb3f(-a, b,-a,-b, a, a), // y+
 801                                 aabb3f( b,-a,-a, a,-b, a), // y-
 802                                 aabb3f(-a,-a,-a,-b,-b, a), // y-
 803                                 aabb3f( b,-a, b, a, a, a), // x+
 804                                 aabb3f( b,-a,-a, a, a,-b), // x+
 805                                 aabb3f(-a,-a, b,-b, a, a), // x-
 806                                 aabb3f(-a,-a,-a,-b, a,-b), // x-
 807                                 aabb3f(-a, b, b, a, a, a), // z+
 808                                 aabb3f(-a,-a, b, a,-b, a), // z+
 809                                 aabb3f(-a,-a,-a, a,-b,-b), // z-
 810                                 aabb3f(-a, b,-a, a, a,-b)  // z-
 811                         };
 812                         static const aabb3f glass_faces[6] = {
 813                                 aabb3f(-g, g,-g, g, g, g), // y+
 814                                 aabb3f(-g,-g,-g, g,-g, g), // y-
 815                                 aabb3f( g,-g,-g, g, g, g), // x+
 816                                 aabb3f(-g,-g,-g,-g, g, g), // x-
 817                                 aabb3f(-g,-g, g, g, g, g), // z+
 818                                 aabb3f(-g,-g,-g, g, g,-g)  // z-
 819                         };
 820
 821                         // table of node visible faces, 0 = invisible
 822                         int visible_faces[6] = {0,0,0,0,0,0};
 823
 824                         // table of neighbours, 1 = same type, checked with g_26dirs
 825                         int nb[18] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
 826
 827                         // g_26dirs to check when only horizontal merge is allowed
 828                         int nb_H_dirs[8] = {0,2,3,5,10,11,12,13};
 829
 830                         content_t current = n.getContent();
 831                         content_t n2c;
 832                         MapNode n2;
 833                         v3s16 n2p;
 834
 835                         // neighbours checks for frames visibility
 836
 837                         if (!H_merge && V_merge) {
 838                                 n2p = blockpos_nodes + p + g_26dirs[1];
 839                                 n2 = data->m_vmanip.getNodeNoEx(n2p);
 840                                 n2c = n2.getContent();
 841                                 if (n2c == current || n2c == CONTENT_IGNORE)
 842                                         nb[1] = 1;
 843                                 n2p = blockpos_nodes + p + g_26dirs[4];
 844                                 n2 = data->m_vmanip.getNodeNoEx(n2p);
 845                                 n2c = n2.getContent();
 846                                 if (n2c == current || n2c == CONTENT_IGNORE)
 847                                         nb[4] = 1;
 848                         } else if (H_merge && !V_merge) {
 849                                 for(i = 0; i < 8; i++) {
 850                                         n2p = blockpos_nodes + p + g_26dirs[nb_H_dirs[i]];
 851                                         n2 = data->m_vmanip.getNodeNoEx(n2p);
 852                                         n2c = n2.getContent();
 853                                         if (n2c == current || n2c == CONTENT_IGNORE)
 854                                                 nb[nb_H_dirs[i]] = 1;
 855                                 }
 856                         } else if (H_merge && V_merge) {
 857                                 for(i = 0; i < 18; i++) {
 858                                         n2p = blockpos_nodes + p + g_26dirs[i];
 859                                         n2 = data->m_vmanip.getNodeNoEx(n2p);
 860                                         n2c = n2.getContent();
 861                                         if (n2c == current || n2c == CONTENT_IGNORE)
 862                                                 nb[i] = 1;
 863                                 }
 864                         }
 865
 866                         // faces visibility checks
 867
 868                         if (!V_merge) {
 869                                 visible_faces[0] = 1;
 870                                 visible_faces[1] = 1;
 871                         } else {
 872                                 for(i = 0; i < 2; i++) {
 873                                         n2p = blockpos_nodes + p + dirs[i];
 874                                         n2 = data->m_vmanip.getNodeNoEx(n2p);
 875                                         n2c = n2.getContent();
 876                                         if (n2c != current)
 877                                                 visible_faces[i] = 1;
 878                                 }
 879                         }
 880
 881                         if (!H_merge) {
 882                                 visible_faces[2] = 1;
 883                                 visible_faces[3] = 1;
 884                                 visible_faces[4] = 1;
 885                                 visible_faces[5] = 1;
 886                         } else {
 887                                 for(i = 2; i < 6; i++) {
 888                                         n2p = blockpos_nodes + p + dirs[i];
 889                                         n2 = data->m_vmanip.getNodeNoEx(n2p);
 890                                         n2c = n2.getContent();
 891                                         if (n2c != current)
 892                                                 visible_faces[i] = 1;
 893                                 }
 894                         }
 895
 896                         static const u8 nb_triplet[12*3] = {
 897                                 1,2, 7,  1,5, 6,  4,2,15,  4,5,14,
 898                                 2,0,11,  2,3,13,  5,0,10,  5,3,12,
 899                                 0,1, 8,  0,4,16,  3,4,17,  3,1, 9
 900                         };
 901
 902                         f32 tx1, ty1, tz1, tx2, ty2, tz2;
 903                         aabb3f box;
 904
 905                         for(i = 0; i < 12; i++)
 906                         {
 907                                 int edge_invisible;
 908                                 if (nb[nb_triplet[i*3+2]])
 909                                         edge_invisible = nb[nb_triplet[i*3]] & nb[nb_triplet[i*3+1]];
 910                                 else
 911                                         edge_invisible = nb[nb_triplet[i*3]] ^ nb[nb_triplet[i*3+1]];
 912                                 if (edge_invisible)
 913                                         continue;
 914                                 box = frame_edges[i];
 915                                 box.MinEdge += pos;
 916                                 box.MaxEdge += pos;
 917                                 tx1 = (box.MinEdge.X / BS) + 0.5;
 918                                 ty1 = (box.MinEdge.Y / BS) + 0.5;
 919                                 tz1 = (box.MinEdge.Z / BS) + 0.5;
 920                                 tx2 = (box.MaxEdge.X / BS) + 0.5;
 921                                 ty2 = (box.MaxEdge.Y / BS) + 0.5;
 922                                 tz2 = (box.MaxEdge.Z / BS) + 0.5;
 923                                 f32 txc1[24] = {
 924                                         tx1,   1-tz2,   tx2, 1-tz1,
 925                                         tx1,     tz1,   tx2,   tz2,
 926                                         tz1,   1-ty2,   tz2, 1-ty1,
 927                                         1-tz2, 1-ty2, 1-tz1, 1-ty1,
 928                                         1-tx2, 1-ty2, 1-tx1, 1-ty1,
 929                                         tx1,   1-ty2,   tx2, 1-ty1,
 930                                 };
 931                                 makeCuboid(&collector, box, &tiles[0], 1, c, txc1);
 932                         }
 933
 934                         for(i = 0; i < 6; i++)
 935                         {
 936                                 if (!visible_faces[i])
 937                                         continue;
 938                                 box = glass_faces[i];
 939                                 box.MinEdge += pos;
 940                                 box.MaxEdge += pos;
 941                                 tx1 = (box.MinEdge.X / BS) + 0.5;
 942                                 ty1 = (box.MinEdge.Y / BS) + 0.5;
 943                                 tz1 = (box.MinEdge.Z / BS) + 0.5;
 944                                 tx2 = (box.MaxEdge.X / BS) + 0.5;
 945                                 ty2 = (box.MaxEdge.Y / BS) + 0.5;
 946                                 tz2 = (box.MaxEdge.Z / BS) + 0.5;
 947                                 f32 txc2[24] = {
 948                                         tx1,   1-tz2,   tx2, 1-tz1,
 949                                         tx1,     tz1,   tx2,   tz2,
 950                                         tz1,   1-ty2,   tz2, 1-ty1,
 951                                         1-tz2, 1-ty2, 1-tz1, 1-ty1,
 952                                         1-tx2, 1-ty2, 1-tx1, 1-ty1,
 953                                         tx1,   1-ty2,   tx2, 1-ty1,
 954                                 };
 955                                 makeCuboid(&collector, box, &glass_tiles[i], 1, c, txc2);
 956                         }
 957
 958                         if (param2 > 0 && f.special_tiles[0].texture) {
 959                                 // Interior volume level is in range 0 .. 63,
 960                                 // convert it to -0.5 .. 0.5
 961                                 float vlev = (((float)param2 / 63.0 ) * 2.0 - 1.0);
 962                                 TileSpec interior_tiles[6];
 963                                 for (i = 0; i < 6; i++)
 964                                         interior_tiles[i] = f.special_tiles[0];
 965                                 float offset = 0.003;
 966                                 box = aabb3f(visible_faces[3] ? -b : -a + offset,
 967                                                          visible_faces[1] ? -b : -a + offset,
 968                                                          visible_faces[5] ? -b : -a + offset,
 969                                                          visible_faces[2] ? b : a - offset,
 970                                                          visible_faces[0] ? b * vlev : a * vlev - offset,
 971                                                          visible_faces[4] ? b : a - offset);
 972                                 box.MinEdge += pos;
 973                                 box.MaxEdge += pos;
 974                                 tx1 = (box.MinEdge.X / BS) + 0.5;
 975                                 ty1 = (box.MinEdge.Y / BS) + 0.5;
 976                                 tz1 = (box.MinEdge.Z / BS) + 0.5;
 977                                 tx2 = (box.MaxEdge.X / BS) + 0.5;
 978                                 ty2 = (box.MaxEdge.Y / BS) + 0.5;
 979                                 tz2 = (box.MaxEdge.Z / BS) + 0.5;
 980                                 f32 txc3[24] = {
 981                                         tx1,   1-tz2,   tx2, 1-tz1,
 982                                         tx1,     tz1,   tx2,   tz2,
 983                                         tz1,   1-ty2,   tz2, 1-ty1,
 984                                         1-tz2, 1-ty2, 1-tz1, 1-ty1,
 985                                         1-tx2, 1-ty2, 1-tx1, 1-ty1,
 986                                         tx1,   1-ty2,   tx2, 1-ty1,
 987                                 };
 988                                 makeCuboid(&collector, box, interior_tiles, 6, c,  txc3);
 989                         }
 990                 break;}
 991                 case NDT_ALLFACES:
 992                 {
 993                         TileSpec tile_leaves = getNodeTile(n, p,
 994                                         v3s16(0,0,0), data);
 995
 996                         u16 l = getInteriorLight(n, 1, nodedef);
 997                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
 998
 999                         v3f pos = intToFloat(p, BS);
1000                         aabb3f box(-BS/2,-BS/2,-BS/2,BS/2,BS/2,BS/2);
1001                         box.MinEdge += pos;
1002                         box.MaxEdge += pos;
1003                         makeCuboid(&collector, box, &tile_leaves, 1, c, NULL);
1004                 break;}
1005                 case NDT_ALLFACES_OPTIONAL:
1006                         // This is always pre-converted to something else
1007                         FATAL_ERROR("NDT_ALLFACES_OPTIONAL not pre-converted");
1008                         break;
1009                 case NDT_TORCHLIKE:
1010                 {
1011                         v3s16 dir = n.getWallMountedDir(nodedef);
1012
1013                         u8 tileindex = 0;
1014                         if(dir == v3s16(0,-1,0)){
1015                                 tileindex = 0; // floor
1016                         } else if(dir == v3s16(0,1,0)){
1017                                 tileindex = 1; // ceiling
1018                         // For backwards compatibility
1019                         } else if(dir == v3s16(0,0,0)){
1020                                 tileindex = 0; // floor
1021                         } else {
1022                                 tileindex = 2; // side
1023                         }
1024
1025                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
1026                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
1027                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1028
1029                         u16 l = getInteriorLight(n, 1, nodedef);
1030                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1031
1032                         float s = BS/2*f.visual_scale;
1033                         // Wall at X+ of node
1034                         video::S3DVertex vertices[4] =
1035                         {
1036                                 video::S3DVertex(-s,-s,0, 0,0,0, c, 0,1),
1037                                 video::S3DVertex( s,-s,0, 0,0,0, c, 1,1),
1038                                 video::S3DVertex( s, s,0, 0,0,0, c, 1,0),
1039                                 video::S3DVertex(-s, s,0, 0,0,0, c, 0,0),
1040                         };
1041
1042                         for(s32 i=0; i<4; i++)
1043                         {
1044                                 if(dir == v3s16(1,0,0))
1045                                         vertices[i].Pos.rotateXZBy(0);
1046                                 if(dir == v3s16(-1,0,0))
1047                                         vertices[i].Pos.rotateXZBy(180);
1048                                 if(dir == v3s16(0,0,1))
1049                                         vertices[i].Pos.rotateXZBy(90);
1050                                 if(dir == v3s16(0,0,-1))
1051                                         vertices[i].Pos.rotateXZBy(-90);
1052                                 if(dir == v3s16(0,-1,0))
1053                                         vertices[i].Pos.rotateXZBy(45);
1054                                 if(dir == v3s16(0,1,0))
1055                                         vertices[i].Pos.rotateXZBy(-45);
1056
1057                                 vertices[i].Pos += intToFloat(p, BS);
1058                         }
1059
1060                         u16 indices[] = {0,1,2,2,3,0};
1061                         // Add to mesh collector
1062                         collector.append(tile, vertices, 4, indices, 6);
1063                 break;}
1064                 case NDT_SIGNLIKE:
1065                 {
1066                         TileSpec tile = getNodeTileN(n, p, 0, data);
1067                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
1068                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1069
1070                         u16 l = getInteriorLight(n, 0, nodedef);
1071                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1072
1073                         float d = (float)BS/16;
1074                         float s = BS/2*f.visual_scale;
1075                         // Wall at X+ of node
1076                         video::S3DVertex vertices[4] =
1077                         {
1078                                 video::S3DVertex(BS/2-d,  s,  s, 0,0,0, c, 0,0),
1079                                 video::S3DVertex(BS/2-d,  s, -s, 0,0,0, c, 1,0),
1080                                 video::S3DVertex(BS/2-d, -s, -s, 0,0,0, c, 1,1),
1081                                 video::S3DVertex(BS/2-d, -s,  s, 0,0,0, c, 0,1),
1082                         };
1083
1084                         v3s16 dir = n.getWallMountedDir(nodedef);
1085
1086                         for(s32 i=0; i<4; i++)
1087                         {
1088                                 if(dir == v3s16(1,0,0))
1089                                         vertices[i].Pos.rotateXZBy(0);
1090                                 if(dir == v3s16(-1,0,0))
1091                                         vertices[i].Pos.rotateXZBy(180);
1092                                 if(dir == v3s16(0,0,1))
1093                                         vertices[i].Pos.rotateXZBy(90);
1094                                 if(dir == v3s16(0,0,-1))
1095                                         vertices[i].Pos.rotateXZBy(-90);
1096                                 if(dir == v3s16(0,-1,0))
1097                                         vertices[i].Pos.rotateXYBy(-90);
1098                                 if(dir == v3s16(0,1,0))
1099                                         vertices[i].Pos.rotateXYBy(90);
1100
1101                                 vertices[i].Pos += intToFloat(p, BS);
1102                         }
1103
1104                         u16 indices[] = {0,1,2,2,3,0};
1105                         // Add to mesh collector
1106                         collector.append(tile, vertices, 4, indices, 6);
1107                 break;}
1108                 case NDT_PLANTLIKE:
1109                 {
1110                         TileSpec tile = getNodeTileN(n, p, 0, data);
1111                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1112
1113                         u16 l = getInteriorLight(n, 1, nodedef);
1114                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1115
1116                         float s = BS / 2 * f.visual_scale;
1117
1118                         for (int j = 0; j < 2; j++)
1119                         {
1120                                 video::S3DVertex vertices[4] =
1121                                 {
1122                                         video::S3DVertex(-s,-BS/2, 0, 0,0,0, c, 0,1),
1123                                         video::S3DVertex( s,-BS/2, 0, 0,0,0, c, 1,1),
1124                                         video::S3DVertex( s,-BS/2 + s*2,0, 0,0,0, c, 1,0),
1125                                         video::S3DVertex(-s,-BS/2 + s*2,0, 0,0,0, c, 0,0),
1126                                 };
1127                                 float rotate_degree = 0;
1128                                 if (f.param_type_2 == CPT2_DEGROTATE)
1129                                         rotate_degree = n.param2 * 2;
1130
1131                                 if (j == 0) {
1132                                         for(u16 i = 0; i < 4; i++)
1133                                                 vertices[i].Pos.rotateXZBy(46 + rotate_degree);
1134                                 } else if (j == 1) {
1135                                         for(u16 i = 0; i < 4; i++)
1136                                                 vertices[i].Pos.rotateXZBy(-44 + rotate_degree);
1137                                 }
1138
1139                                 for (int i = 0; i < 4; i++)
1140                                 {
1141                                         vertices[i].Pos *= f.visual_scale;
1142                                         vertices[i].Pos.Y += BS/2 * (f.visual_scale - 1);
1143                                         vertices[i].Pos += intToFloat(p, BS);
1144                                 }
1145
1146                                 u16 indices[] = {0, 1, 2, 2, 3, 0};
1147                                 // Add to mesh collector
1148                                 collector.append(tile, vertices, 4, indices, 6);
1149                         }
1150                 break;}
1151                 case NDT_FIRELIKE:
1152                 {
1153                         TileSpec tile = getNodeTileN(n, p, 0, data);
1154                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1155
1156                         u16 l = getInteriorLight(n, 1, nodedef);
1157                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1158
1159                         float s = BS / 2 * f.visual_scale;
1160
1161                         content_t current = n.getContent();
1162                         content_t n2c;
1163                         MapNode n2;
1164                         v3s16 n2p;
1165
1166                         static const v3s16 dirs[6] = {
1167                                 v3s16( 0,  1,  0),
1168                                 v3s16( 0, -1,  0),
1169                                 v3s16( 1,  0,  0),
1170                                 v3s16(-1,  0,  0),
1171                                 v3s16( 0,  0,  1),
1172                                 v3s16( 0,  0, -1)
1173                         };
1174
1175                         int doDraw[6] = {0, 0, 0, 0, 0, 0};
1176
1177                         bool drawAllFaces = true;
1178
1179                         // Check for adjacent nodes
1180                         for (int i = 0; i < 6; i++) {
1181                                 n2p = blockpos_nodes + p + dirs[i];
1182                                 n2 = data->m_vmanip.getNodeNoEx(n2p);
1183                                 n2c = n2.getContent();
1184                                 if (n2c != CONTENT_IGNORE && n2c != CONTENT_AIR && n2c != current) {
1185                                         doDraw[i] = 1;
1186                                         if (drawAllFaces)
1187                                                 drawAllFaces = false;
1188
1189                                 }
1190                         }
1191
1192                         for (int j = 0; j < 6; j++) {
1193
1194                                 video::S3DVertex vertices[4] = {
1195                                         video::S3DVertex(-s, -BS / 2,         0, 0, 0, 0, c, 0, 1),
1196                                         video::S3DVertex( s, -BS / 2,         0, 0, 0, 0, c, 1, 1),
1197                                         video::S3DVertex( s, -BS / 2 + s * 2, 0, 0, 0, 0, c, 1, 0),
1198                                         video::S3DVertex(-s, -BS / 2 + s * 2, 0, 0, 0, 0, c, 0, 0),
1199                                 };
1200
1201                                 // Calculate which faces should be drawn, (top or sides)
1202                                 if (j == 0 && (drawAllFaces ||
1203                                                 (doDraw[3] == 1 || doDraw[1] == 1))) {
1204                                         for (int i = 0; i < 4; i++) {
1205                                                 vertices[i].Pos.rotateXZBy(90);
1206                                                 vertices[i].Pos.rotateXYBy(-10);
1207                                                 vertices[i].Pos.X -= 4.0;
1208                                         }
1209                                 } else if (j == 1 && (drawAllFaces ||
1210                                                 (doDraw[5] == 1 || doDraw[1] == 1))) {
1211                                         for (int i = 0; i < 4; i++) {
1212                                                 vertices[i].Pos.rotateXZBy(180);
1213                                                 vertices[i].Pos.rotateYZBy(10);
1214                                                 vertices[i].Pos.Z -= 4.0;
1215                                         }
1216                                 } else if (j == 2 && (drawAllFaces ||
1217                                                 (doDraw[2] == 1 || doDraw[1] == 1))) {
1218                                         for (int i = 0; i < 4; i++) {
1219                                                 vertices[i].Pos.rotateXZBy(270);
1220                                                 vertices[i].Pos.rotateXYBy(10);
1221                                                 vertices[i].Pos.X += 4.0;
1222                                         }
1223                                 } else if (j == 3 && (drawAllFaces ||
1224                                                 (doDraw[4] == 1 || doDraw[1] == 1))) {
1225                                         for (int i = 0; i < 4; i++) {
1226                                                 vertices[i].Pos.rotateYZBy(-10);
1227                                                 vertices[i].Pos.Z += 4.0;
1228                                         }
1229                                 // Center cross-flames
1230                                 } else if (j == 4 && (drawAllFaces || doDraw[1] == 1)) {
1231                                         for (int i = 0; i < 4; i++) {
1232                                                 vertices[i].Pos.rotateXZBy(45);
1233                                         }
1234                                 } else if (j == 5 && (drawAllFaces || doDraw[1] == 1)) {
1235                                         for (int i = 0; i < 4; i++) {
1236                                                 vertices[i].Pos.rotateXZBy(-45);
1237                                         }
1238                                 // Render flames on bottom of node above
1239                                 } else if (j == 0 && doDraw[0] == 1 && doDraw[1] == 0) {
1240                                         for (int i = 0; i < 4; i++) {
1241                                                 vertices[i].Pos.rotateYZBy(70);
1242                                                 vertices[i].Pos.rotateXZBy(90);
1243                                                 vertices[i].Pos.Y += 4.84;
1244                                                 vertices[i].Pos.X -= 4.7;
1245                                         }
1246                                 } else if (j == 1 && doDraw[0] == 1 && doDraw[1] == 0) {
1247                                         for (int i = 0; i < 4; i++) {
1248                                                 vertices[i].Pos.rotateYZBy(70);
1249                                                 vertices[i].Pos.rotateXZBy(180);
1250                                                 vertices[i].Pos.Y += 4.84;
1251                                                 vertices[i].Pos.Z -= 4.7;
1252                                         }
1253                                 } else if (j == 2 && doDraw[0] == 1 && doDraw[1] == 0) {
1254                                         for (int i = 0; i < 4; i++) {
1255                                                 vertices[i].Pos.rotateYZBy(70);
1256                                                 vertices[i].Pos.rotateXZBy(270);
1257                                                 vertices[i].Pos.Y += 4.84;
1258                                                 vertices[i].Pos.X += 4.7;
1259                                         }
1260                                 } else if (j == 3 && doDraw[0] == 1 && doDraw[1] == 0) {
1261                                         for (int i = 0; i < 4; i++) {
1262                                                 vertices[i].Pos.rotateYZBy(70);
1263                                                 vertices[i].Pos.Y += 4.84;
1264                                                 vertices[i].Pos.Z += 4.7;
1265                                         }
1266                                 } else {
1267                                         // Skip faces that aren't adjacent to a node
1268                                         continue;
1269                                 }
1270
1271                                 for (int i = 0; i < 4; i++) {
1272                                         vertices[i].Pos *= f.visual_scale;
1273                                         vertices[i].Pos += intToFloat(p, BS);
1274                                 }
1275
1276                                 u16 indices[] = {0, 1, 2, 2, 3, 0};
1277                                 // Add to mesh collector
1278                                 collector.append(tile, vertices, 4, indices, 6);
1279                         }
1280                 break;}
1281                 case NDT_FENCELIKE:
1282                 {
1283                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
1284                         TileSpec tile_nocrack = tile;
1285                         tile_nocrack.material_flags &= ~MATERIAL_FLAG_CRACK;
1286
1287                         // Put wood the right way around in the posts
1288                         TileSpec tile_rot = tile;
1289                         tile_rot.rotation = 1;
1290
1291                         u16 l = getInteriorLight(n, 1, nodedef);
1292                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1293
1294                         const f32 post_rad=(f32)BS/8;
1295                         const f32 bar_rad=(f32)BS/16;
1296                         const f32 bar_len=(f32)(BS/2)-post_rad;
1297
1298                         v3f pos = intToFloat(p, BS);
1299
1300                         // The post - always present
1301                         aabb3f post(-post_rad,-BS/2,-post_rad,post_rad,BS/2,post_rad);
1302                         post.MinEdge += pos;
1303                         post.MaxEdge += pos;
1304                         f32 postuv[24]={
1305                                         6/16.,6/16.,10/16.,10/16.,
1306                                         6/16.,6/16.,10/16.,10/16.,
1307                                         0/16.,0,4/16.,1,
1308                                         4/16.,0,8/16.,1,
1309                                         8/16.,0,12/16.,1,
1310                                         12/16.,0,16/16.,1};
1311                         makeCuboid(&collector, post, &tile_rot, 1, c, postuv);
1312
1313                         // Now a section of fence, +X, if there's a post there
1314                         v3s16 p2 = p;
1315                         p2.X++;
1316                         MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
1317                         const ContentFeatures *f2 = &nodedef->get(n2);
1318                         if(f2->drawtype == NDT_FENCELIKE)
1319                         {
1320                                 aabb3f bar(-bar_len+BS/2,-bar_rad+BS/4,-bar_rad,
1321                                                 bar_len+BS/2,bar_rad+BS/4,bar_rad);
1322                                 bar.MinEdge += pos;
1323                                 bar.MaxEdge += pos;
1324                                 f32 xrailuv[24]={
1325                                         0/16.,2/16.,16/16.,4/16.,
1326                                         0/16.,4/16.,16/16.,6/16.,
1327                                         6/16.,6/16.,8/16.,8/16.,
1328                                         10/16.,10/16.,12/16.,12/16.,
1329                                         0/16.,8/16.,16/16.,10/16.,
1330                                         0/16.,14/16.,16/16.,16/16.};
1331                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
1332                                                 c, xrailuv);
1333                                 bar.MinEdge.Y -= BS/2;
1334                                 bar.MaxEdge.Y -= BS/2;
1335                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
1336                                                 c, xrailuv);
1337                         }
1338
1339                         // Now a section of fence, +Z, if there's a post there
1340                         p2 = p;
1341                         p2.Z++;
1342                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
1343                         f2 = &nodedef->get(n2);
1344                         if(f2->drawtype == NDT_FENCELIKE)
1345                         {
1346                                 aabb3f bar(-bar_rad,-bar_rad+BS/4,-bar_len+BS/2,
1347                                                 bar_rad,bar_rad+BS/4,bar_len+BS/2);
1348                                 bar.MinEdge += pos;
1349                                 bar.MaxEdge += pos;
1350                                 f32 zrailuv[24]={
1351                                         3/16.,1/16.,5/16.,5/16., // cannot rotate; stretch
1352                                         4/16.,1/16.,6/16.,5/16., // for wood texture instead
1353                                         0/16.,9/16.,16/16.,11/16.,
1354                                         0/16.,6/16.,16/16.,8/16.,
1355                                         6/16.,6/16.,8/16.,8/16.,
1356                                         10/16.,10/16.,12/16.,12/16.};
1357                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
1358                                                 c, zrailuv);
1359                                 bar.MinEdge.Y -= BS/2;
1360                                 bar.MaxEdge.Y -= BS/2;
1361                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
1362                                                 c, zrailuv);
1363                         }
1364                 break;}
1365                 case NDT_RAILLIKE:
1366                 {
1367                         bool is_rail_x[6]; /* (-1,-1,0) X (1,-1,0) (-1,0,0) X (1,0,0) (-1,1,0) X (1,1,0) */
1368                         bool is_rail_z[6];
1369
1370                         content_t thiscontent = n.getContent();
1371                         std::string groupname = "connect_to_raillike"; // name of the group that enables connecting to raillike nodes of different kind
1372                         int self_group = ((ItemGroupList) nodedef->get(n).groups)[groupname];
1373
1374                         u8 index = 0;
1375                         for (s8 y0 = -1; y0 <= 1; y0++) {
1376                                 // Prevent from indexing never used coordinates
1377                                 for (s8 xz = -1; xz <= 1; xz++) {
1378                                         if (xz == 0)
1379                                                 continue;
1380                                         MapNode n_xy = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x + xz, y + y0, z));
1381                                         MapNode n_zy = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y + y0, z + xz));
1382                                         ContentFeatures def_xy = nodedef->get(n_xy);
1383                                         ContentFeatures def_zy = nodedef->get(n_zy);
1384
1385                                         // Check if current node would connect with the rail
1386                                         is_rail_x[index] = ((def_xy.drawtype == NDT_RAILLIKE
1387                                                         && ((ItemGroupList) def_xy.groups)[groupname] == self_group)
1388                                                         || n_xy.getContent() == thiscontent);
1389
1390                                         is_rail_z[index] = ((def_zy.drawtype == NDT_RAILLIKE
1391                                                         && ((ItemGroupList) def_zy.groups)[groupname] == self_group)
1392                                                         || n_zy.getContent() == thiscontent);
1393                                         index++;
1394                                 }
1395                         }
1396
1397                         bool is_rail_x_all[2]; // [0] = negative x, [1] = positive x coordinate from the current node position
1398                         bool is_rail_z_all[2];
1399                         is_rail_x_all[0] = is_rail_x[0] || is_rail_x[2] || is_rail_x[4];
1400                         is_rail_x_all[1] = is_rail_x[1] || is_rail_x[3] || is_rail_x[5];
1401                         is_rail_z_all[0] = is_rail_z[0] || is_rail_z[2] || is_rail_z[4];
1402                         is_rail_z_all[1] = is_rail_z[1] || is_rail_z[3] || is_rail_z[5];
1403
1404                         // reasonable default, flat straight unrotated rail
1405                         bool is_straight = true;
1406                         int adjacencies = 0;
1407                         int angle = 0;
1408                         u8 tileindex = 0;
1409
1410                         // check for sloped rail
1411                         if (is_rail_x[4] || is_rail_x[5] || is_rail_z[4] || is_rail_z[5]) {
1412                                 adjacencies = 5; // 5 means sloped
1413                                 is_straight = true; // sloped is always straight
1414                         } else {
1415                                 // is really straight, rails on both sides
1416                                 is_straight = (is_rail_x_all[0] && is_rail_x_all[1]) || (is_rail_z_all[0] && is_rail_z_all[1]);
1417                                 adjacencies = is_rail_x_all[0] + is_rail_x_all[1] + is_rail_z_all[0] + is_rail_z_all[1];
1418                         }
1419
1420                         switch (adjacencies) {
1421                         case 1:
1422                                 if (is_rail_x_all[0] || is_rail_x_all[1])
1423                                         angle = 90;
1424                                 break;
1425                         case 2:
1426                                 if (!is_straight)
1427                                         tileindex = 1; // curved
1428                                 if (is_rail_x_all[0] && is_rail_x_all[1])
1429                                         angle = 90;
1430                                 if (is_rail_z_all[0] && is_rail_z_all[1]) {
1431                                         if (is_rail_z[4])
1432                                                 angle = 180;
1433                                 }
1434                                 else if (is_rail_x_all[0] && is_rail_z_all[0])
1435                                         angle = 270;
1436                                 else if (is_rail_x_all[0] && is_rail_z_all[1])
1437                                         angle = 180;
1438                                 else if (is_rail_x_all[1] && is_rail_z_all[1])
1439                                         angle = 90;
1440                                 break;
1441                         case 3:
1442                                 // here is where the potential to 'switch' a junction is, but not implemented at present
1443                                 tileindex = 2; // t-junction
1444                                 if(!is_rail_x_all[1])
1445                                         angle = 180;
1446                                 if(!is_rail_z_all[0])
1447                                         angle = 90;
1448                                 if(!is_rail_z_all[1])
1449                                         angle = 270;
1450                                 break;
1451                         case 4:
1452                                 tileindex = 3; // crossing
1453                                 break;
1454                         case 5: //sloped
1455                                 if (is_rail_z[4])
1456                                         angle = 180;
1457                                 if (is_rail_x[4])
1458                                         angle = 90;
1459                                 if (is_rail_x[5])
1460                                         angle = -90;
1461                                 break;
1462                         default:
1463                                 break;
1464                         }
1465
1466                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
1467                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
1468                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1469
1470                         u16 l = getInteriorLight(n, 0, nodedef);
1471                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1472
1473                         float d = (float)BS/64;
1474                         float s = BS/2;
1475
1476                         short g = -1;
1477                         if (is_rail_x[4] || is_rail_x[5] || is_rail_z[4] || is_rail_z[5])
1478                                 g = 1; //Object is at a slope
1479
1480                         video::S3DVertex vertices[4] =
1481                         {
1482                                         video::S3DVertex(-s,  -s+d,-s,  0,0,0,  c,0,1),
1483                                         video::S3DVertex( s,  -s+d,-s,  0,0,0,  c,1,1),
1484                                         video::S3DVertex( s, g*s+d, s,  0,0,0,  c,1,0),
1485                                         video::S3DVertex(-s, g*s+d, s,  0,0,0,  c,0,0),
1486                         };
1487
1488                         for(s32 i=0; i<4; i++)
1489                         {
1490                                 if(angle != 0)
1491                                         vertices[i].Pos.rotateXZBy(angle);
1492                                 vertices[i].Pos += intToFloat(p, BS);
1493                         }
1494
1495                         u16 indices[] = {0,1,2,2,3,0};
1496                         collector.append(tile, vertices, 4, indices, 6);
1497                 break;}
1498                 case NDT_NODEBOX:
1499                 {
1500                         static const v3s16 tile_dirs[6] = {
1501                                 v3s16(0, 1, 0),
1502                                 v3s16(0, -1, 0),
1503                                 v3s16(1, 0, 0),
1504                                 v3s16(-1, 0, 0),
1505                                 v3s16(0, 0, 1),
1506                                 v3s16(0, 0, -1)
1507                         };
1508                         TileSpec tiles[6];
1509
1510                         u16 l = getInteriorLight(n, 1, nodedef);
1511                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1512
1513                         v3f pos = intToFloat(p, BS);
1514
1515                         std::vector<aabb3f> boxes = n.getNodeBoxes(nodedef);
1516                         for(std::vector<aabb3f>::iterator
1517                                         i = boxes.begin();
1518                                         i != boxes.end(); ++i)
1519                         {
1520                         for(int j = 0; j < 6; j++)
1521                                 {
1522                                 // Handles facedir rotation for textures
1523                                 tiles[j] = getNodeTile(n, p, tile_dirs[j], data);
1524                                 }
1525                                 aabb3f box = *i;
1526                                 box.MinEdge += pos;
1527                                 box.MaxEdge += pos;
1528
1529                                 f32 temp;
1530                                 if (box.MinEdge.X > box.MaxEdge.X)
1531                                 {
1532                                         temp=box.MinEdge.X;
1533                                         box.MinEdge.X=box.MaxEdge.X;
1534                                         box.MaxEdge.X=temp;
1535                                 }
1536                                 if (box.MinEdge.Y > box.MaxEdge.Y)
1537                                 {
1538                                         temp=box.MinEdge.Y;
1539                                         box.MinEdge.Y=box.MaxEdge.Y;
1540                                         box.MaxEdge.Y=temp;
1541                                 }
1542                                 if (box.MinEdge.Z > box.MaxEdge.Z)
1543                                 {
1544                                         temp=box.MinEdge.Z;
1545                                         box.MinEdge.Z=box.MaxEdge.Z;
1546                                         box.MaxEdge.Z=temp;
1547                                 }
1548
1549                                 //
1550                                 // Compute texture coords
1551                                 f32 tx1 = (box.MinEdge.X/BS)+0.5;
1552                                 f32 ty1 = (box.MinEdge.Y/BS)+0.5;
1553                                 f32 tz1 = (box.MinEdge.Z/BS)+0.5;
1554                                 f32 tx2 = (box.MaxEdge.X/BS)+0.5;
1555                                 f32 ty2 = (box.MaxEdge.Y/BS)+0.5;
1556                                 f32 tz2 = (box.MaxEdge.Z/BS)+0.5;
1557                                 f32 txc[24] = {
1558                                         // up
1559                                         tx1, 1-tz2, tx2, 1-tz1,
1560                                         // down
1561                                         tx1, tz1, tx2, tz2,
1562                                         // right
1563                                         tz1, 1-ty2, tz2, 1-ty1,
1564                                         // left
1565                                         1-tz2, 1-ty2, 1-tz1, 1-ty1,
1566                                         // back
1567                                         1-tx2, 1-ty2, 1-tx1, 1-ty1,
1568                                         // front
1569                                         tx1, 1-ty2, tx2, 1-ty1,
1570                                 };
1571                                 makeCuboid(&collector, box, tiles, 6, c, txc);
1572                         }
1573                 break;}
1574                 case NDT_MESH:
1575                 {
1576                         v3f pos = intToFloat(p, BS);
1577                         video::SColor c = MapBlock_LightColor(255, getInteriorLight(n, 1, nodedef), f.light_source);
1578
1579                         u8 facedir = 0;
1580                         if (f.param_type_2 == CPT2_FACEDIR) {
1581                                 facedir = n.getFaceDir(nodedef);
1582                         } else if (f.param_type_2 == CPT2_WALLMOUNTED) {
1583                                 //convert wallmounted to 6dfacedir.
1584                                 //when cache enabled, it is already converted
1585                                 facedir = n.getWallMounted(nodedef);
1586                                 if (!enable_mesh_cache) {
1587                                         static const u8 wm_to_6d[6] = {20, 0, 16+1, 12+3, 8, 4+2};
1588                                         facedir = wm_to_6d[facedir];
1589                                 }
1590                         }
1591
1592                         if (f.mesh_ptr[facedir]) {
1593                                 // use cached meshes
1594                                 for(u16 j = 0; j < f.mesh_ptr[0]->getMeshBufferCount(); j++) {
1595                                         scene::IMeshBuffer *buf = f.mesh_ptr[facedir]->getMeshBuffer(j);
1596                                         collector.append(getNodeTileN(n, p, j, data),
1597                                                 (video::S3DVertex *)buf->getVertices(), buf->getVertexCount(),
1598                                                 buf->getIndices(), buf->getIndexCount(), pos, c);
1599                                 }
1600                         } else if (f.mesh_ptr[0]) {
1601                                 // no cache, clone and rotate mesh
1602                                 scene::IMesh* mesh = cloneMesh(f.mesh_ptr[0]);
1603                                 rotateMeshBy6dFacedir(mesh, facedir);
1604                                 recalculateBoundingBox(mesh);
1605                                 meshmanip->recalculateNormals(mesh, true, false);
1606                                 for(u16 j = 0; j < mesh->getMeshBufferCount(); j++) {
1607                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
1608                                         collector.append(getNodeTileN(n, p, j, data),
1609                                                 (video::S3DVertex *)buf->getVertices(), buf->getVertexCount(),
1610                                                 buf->getIndices(), buf->getIndexCount(), pos, c);
1611                                 }
1612                                 mesh->drop();
1613                         }
1614                 break;}
1615                 }
1616         }
1617 }
1618