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         ITextureSource *tsrc = data->m_gamedef->tsrc();
 175         scene::ISceneManager* smgr = data->m_gamedef->getSceneManager();
 176         scene::IMeshManipulator* meshmanip = smgr->getMeshManipulator();
 177
 178         // 0ms
 179         //TimeTaker timer("mapblock_mesh_generate_special()");
 180
 181         /*
 182                 Some settings
 183         */
 184         bool enable_mesh_cache  = g_settings->getBool("enable_mesh_cache");
 185         bool new_style_water = g_settings->getBool("new_style_water");
 186
 187         float node_liquid_level = 1.0;
 188         if (new_style_water)
 189                 node_liquid_level = 0.85;
 190
 191         v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;
 192
 193         for(s16 z = 0; z < MAP_BLOCKSIZE; z++)
 194         for(s16 y = 0; y < MAP_BLOCKSIZE; y++)
 195         for(s16 x = 0; x < MAP_BLOCKSIZE; x++)
 196         {
 197                 v3s16 p(x,y,z);
 198
 199                 MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + p);
 200                 const ContentFeatures &f = nodedef->get(n);
 201
 202                 // Only solidness=0 stuff is drawn here
 203                 if(f.solidness != 0)
 204                         continue;
 205
 206                 switch(f.drawtype){
 207                 default:
 208                         infostream << "Got " << f.drawtype << std::endl;
 209                         FATAL_ERROR("Unknown drawtype");
 210                         break;
 211                 case NDT_AIRLIKE:
 212                         break;
 213                 case NDT_LIQUID:
 214                 {
 215                         /*
 216                                 Add water sources to mesh if using new style
 217                         */
 218                         TileSpec tile_liquid = f.special_tiles[0];
 219                         TileSpec tile_liquid_bfculled = getNodeTile(n, p, v3s16(0,0,0), data);
 220
 221                         bool top_is_same_liquid = false;
 222                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 223                         content_t c_flowing = nodedef->getId(f.liquid_alternative_flowing);
 224                         content_t c_source = nodedef->getId(f.liquid_alternative_source);
 225                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 226                                 top_is_same_liquid = true;
 227
 228                         u16 l = getInteriorLight(n, 0, nodedef);
 229                         video::SColor c = MapBlock_LightColor(f.alpha, l, f.light_source);
 230
 231                         /*
 232                                 Generate sides
 233                          */
 234                         v3s16 side_dirs[4] = {
 235                                 v3s16(1,0,0),
 236                                 v3s16(-1,0,0),
 237                                 v3s16(0,0,1),
 238                                 v3s16(0,0,-1),
 239                         };
 240                         for(u32 i=0; i<4; i++)
 241                         {
 242                                 v3s16 dir = side_dirs[i];
 243
 244                                 MapNode neighbor = data->m_vmanip.getNodeNoEx(blockpos_nodes + p + dir);
 245                                 content_t neighbor_content = neighbor.getContent();
 246                                 const ContentFeatures &n_feat = nodedef->get(neighbor_content);
 247                                 MapNode n_top = data->m_vmanip.getNodeNoEx(blockpos_nodes + p + dir+ v3s16(0,1,0));
 248                                 content_t n_top_c = n_top.getContent();
 249
 250                                 if(neighbor_content == CONTENT_IGNORE)
 251                                         continue;
 252
 253                                 /*
 254                                         If our topside is liquid and neighbor's topside
 255                                         is liquid, don't draw side face
 256                                 */
 257                                 if(top_is_same_liquid && (n_top_c == c_flowing ||
 258                                                 n_top_c == c_source || n_top_c == CONTENT_IGNORE))
 259                                         continue;
 260
 261                                 // Don't draw face if neighbor is blocking the view
 262                                 if(n_feat.solidness == 2)
 263                                         continue;
 264
 265                                 bool neighbor_is_same_liquid = (neighbor_content == c_source
 266                                                 || neighbor_content == c_flowing);
 267
 268                                 // Don't draw any faces if neighbor same is liquid and top is
 269                                 // same liquid
 270                                 if(neighbor_is_same_liquid && !top_is_same_liquid)
 271                                         continue;
 272
 273                                 // Use backface culled material if neighbor doesn't have a
 274                                 // solidness of 0
 275                                 const TileSpec *current_tile = &tile_liquid;
 276                                 if(n_feat.solidness != 0 || n_feat.visual_solidness != 0)
 277                                         current_tile = &tile_liquid_bfculled;
 278
 279                                 video::S3DVertex vertices[4] =
 280                                 {
 281                                         video::S3DVertex(-BS/2,0,BS/2,0,0,0, c, 0,1),
 282                                         video::S3DVertex(BS/2,0,BS/2,0,0,0, c, 1,1),
 283                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
 284                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),
 285                                 };
 286
 287                                 /*
 288                                         If our topside is liquid, set upper border of face
 289                                         at upper border of node
 290                                 */
 291                                 if(top_is_same_liquid)
 292                                 {
 293                                         vertices[2].Pos.Y = 0.5*BS;
 294                                         vertices[3].Pos.Y = 0.5*BS;
 295                                 }
 296                                 /*
 297                                         Otherwise upper position of face is liquid level
 298                                 */
 299                                 else
 300                                 {
 301                                         vertices[2].Pos.Y = (node_liquid_level-0.5)*BS;
 302                                         vertices[3].Pos.Y = (node_liquid_level-0.5)*BS;
 303                                 }
 304                                 /*
 305                                         If neighbor is liquid, lower border of face is liquid level
 306                                 */
 307                                 if(neighbor_is_same_liquid)
 308                                 {
 309                                         vertices[0].Pos.Y = (node_liquid_level-0.5)*BS;
 310                                         vertices[1].Pos.Y = (node_liquid_level-0.5)*BS;
 311                                 }
 312                                 /*
 313                                         If neighbor is not liquid, lower border of face is
 314                                         lower border of node
 315                                 */
 316                                 else
 317                                 {
 318                                         vertices[0].Pos.Y = -0.5*BS;
 319                                         vertices[1].Pos.Y = -0.5*BS;
 320                                 }
 321
 322                                 for(s32 j=0; j<4; j++)
 323                                 {
 324                                         if(dir == v3s16(0,0,1))
 325                                                 vertices[j].Pos.rotateXZBy(0);
 326                                         if(dir == v3s16(0,0,-1))
 327                                                 vertices[j].Pos.rotateXZBy(180);
 328                                         if(dir == v3s16(-1,0,0))
 329                                                 vertices[j].Pos.rotateXZBy(90);
 330                                         if(dir == v3s16(1,0,-0))
 331                                                 vertices[j].Pos.rotateXZBy(-90);
 332
 333                                         // Do this to not cause glitches when two liquids are
 334                                         // side-by-side
 335                                         /*if(neighbor_is_same_liquid == false){
 336                                                 vertices[j].Pos.X *= 0.98;
 337                                                 vertices[j].Pos.Z *= 0.98;
 338                                         }*/
 339
 340                                         vertices[j].Pos += intToFloat(p, BS);
 341                                 }
 342
 343                                 u16 indices[] = {0,1,2,2,3,0};
 344                                 // Add to mesh collector
 345                                 collector.append(*current_tile, vertices, 4, indices, 6);
 346                         }
 347
 348                         /*
 349                                 Generate top
 350                          */
 351                         if(top_is_same_liquid)
 352                                 continue;
 353
 354                         video::S3DVertex vertices[4] =
 355                         {
 356                                 video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
 357                                 video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,1),
 358                                 video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c, 1,0),
 359                                 video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,0),
 360                         };
 361
 362                         v3f offset(p.X*BS, p.Y*BS + (-0.5+node_liquid_level)*BS, p.Z*BS);
 363                         for(s32 i=0; i<4; i++)
 364                         {
 365                                 vertices[i].Pos += offset;
 366                         }
 367
 368                         u16 indices[] = {0,1,2,2,3,0};
 369                         // Add to mesh collector
 370                         collector.append(tile_liquid, vertices, 4, indices, 6);
 371                 break;}
 372                 case NDT_FLOWINGLIQUID:
 373                 {
 374                         /*
 375                                 Add flowing liquid to mesh
 376                         */
 377                         TileSpec tile_liquid = f.special_tiles[0];
 378                         TileSpec tile_liquid_bfculled = f.special_tiles[1];
 379
 380                         bool top_is_same_liquid = false;
 381                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 382                         content_t c_flowing = nodedef->getId(f.liquid_alternative_flowing);
 383                         content_t c_source = nodedef->getId(f.liquid_alternative_source);
 384                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 385                                 top_is_same_liquid = true;
 386
 387                         u16 l = 0;
 388                         // If this liquid emits light and doesn't contain light, draw
 389                         // it at what it emits, for an increased effect
 390                         u8 light_source = nodedef->get(n).light_source;
 391                         if(light_source != 0){
 392                                 l = decode_light(light_source);
 393                                 l = l | (l<<8);
 394                         }
 395                         // Use the light of the node on top if possible
 396                         else if(nodedef->get(ntop).param_type == CPT_LIGHT)
 397                                 l = getInteriorLight(ntop, 0, nodedef);
 398                         // Otherwise use the light of this node (the liquid)
 399                         else
 400                                 l = getInteriorLight(n, 0, nodedef);
 401                         video::SColor c = MapBlock_LightColor(f.alpha, l, f.light_source);
 402
 403                         u8 range = rangelim(nodedef->get(c_flowing).liquid_range, 1, 8);
 404
 405                         // Neighbor liquid levels (key = relative position)
 406                         // Includes current node
 407                         std::map<v3s16, f32> neighbor_levels;
 408                         std::map<v3s16, content_t> neighbor_contents;
 409                         std::map<v3s16, u8> neighbor_flags;
 410                         const u8 neighborflag_top_is_same_liquid = 0x01;
 411                         v3s16 neighbor_dirs[9] = {
 412                                 v3s16(0,0,0),
 413                                 v3s16(0,0,1),
 414                                 v3s16(0,0,-1),
 415                                 v3s16(1,0,0),
 416                                 v3s16(-1,0,0),
 417                                 v3s16(1,0,1),
 418                                 v3s16(-1,0,-1),
 419                                 v3s16(1,0,-1),
 420                                 v3s16(-1,0,1),
 421                         };
 422                         for(u32 i=0; i<9; i++)
 423                         {
 424                                 content_t content = CONTENT_AIR;
 425                                 float level = -0.5 * BS;
 426                                 u8 flags = 0;
 427                                 // Check neighbor
 428                                 v3s16 p2 = p + neighbor_dirs[i];
 429                                 MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 430                                 if(n2.getContent() != CONTENT_IGNORE)
 431                                 {
 432                                         content = n2.getContent();
 433
 434                                         if(n2.getContent() == c_source)
 435                                                 level = (-0.5+node_liquid_level) * BS;
 436                                         else if(n2.getContent() == c_flowing){
 437                                                 u8 liquid_level = (n2.param2&LIQUID_LEVEL_MASK);
 438                                                 if (liquid_level <= LIQUID_LEVEL_MAX+1-range)
 439                                                         liquid_level = 0;
 440                                                 else
 441                                                         liquid_level -= (LIQUID_LEVEL_MAX+1-range);
 442                                                 level = (-0.5 + ((float)liquid_level+ 0.5) / (float)range * node_liquid_level) * BS;
 443                                         }
 444
 445                                         // Check node above neighbor.
 446                                         // NOTE: This doesn't get executed if neighbor
 447                                         //       doesn't exist
 448                                         p2.Y += 1;
 449                                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 450                                         if(n2.getContent() == c_source ||
 451                                                         n2.getContent() == c_flowing)
 452                                                 flags |= neighborflag_top_is_same_liquid;
 453                                 }
 454
 455                                 neighbor_levels[neighbor_dirs[i]] = level;
 456                                 neighbor_contents[neighbor_dirs[i]] = content;
 457                                 neighbor_flags[neighbor_dirs[i]] = flags;
 458                         }
 459
 460                         // Corner heights (average between four liquids)
 461                         f32 corner_levels[4];
 462
 463                         v3s16 halfdirs[4] = {
 464                                 v3s16(0,0,0),
 465                                 v3s16(1,0,0),
 466                                 v3s16(1,0,1),
 467                                 v3s16(0,0,1),
 468                         };
 469                         for(u32 i=0; i<4; i++)
 470                         {
 471                                 v3s16 cornerdir = halfdirs[i];
 472                                 float cornerlevel = 0;
 473                                 u32 valid_count = 0;
 474                                 u32 air_count = 0;
 475                                 for(u32 j=0; j<4; j++)
 476                                 {
 477                                         v3s16 neighbordir = cornerdir - halfdirs[j];
 478                                         content_t content = neighbor_contents[neighbordir];
 479                                         // If top is liquid, draw starting from top of node
 480                                         if(neighbor_flags[neighbordir] &
 481                                                         neighborflag_top_is_same_liquid)
 482                                         {
 483                                                 cornerlevel = 0.5*BS;
 484                                                 valid_count = 1;
 485                                                 break;
 486                                         }
 487                                         // Source is always the same height
 488                                         else if(content == c_source)
 489                                         {
 490                                                 cornerlevel = (-0.5+node_liquid_level)*BS;
 491                                                 valid_count = 1;
 492                                                 break;
 493                                         }
 494                                         // Flowing liquid has level information
 495                                         else if(content == c_flowing)
 496                                         {
 497                                                 cornerlevel += neighbor_levels[neighbordir];
 498                                                 valid_count++;
 499                                         }
 500                                         else if(content == CONTENT_AIR)
 501                                         {
 502                                                 air_count++;
 503                                         }
 504                                 }
 505                                 if(air_count >= 2)
 506                                         cornerlevel = -0.5*BS+0.2;
 507                                 else if(valid_count > 0)
 508                                         cornerlevel /= valid_count;
 509                                 corner_levels[i] = cornerlevel;
 510                         }
 511
 512                         /*
 513                                 Generate sides
 514                         */
 515
 516                         v3s16 side_dirs[4] = {
 517                                 v3s16(1,0,0),
 518                                 v3s16(-1,0,0),
 519                                 v3s16(0,0,1),
 520                                 v3s16(0,0,-1),
 521                         };
 522                         s16 side_corners[4][2] = {
 523                                 {1, 2},
 524                                 {3, 0},
 525                                 {2, 3},
 526                                 {0, 1},
 527                         };
 528                         for(u32 i=0; i<4; i++)
 529                         {
 530                                 v3s16 dir = side_dirs[i];
 531
 532                                 /*
 533                                         If our topside is liquid and neighbor's topside
 534                                         is liquid, don't draw side face
 535                                 */
 536                                 if(top_is_same_liquid &&
 537                                                 neighbor_flags[dir] & neighborflag_top_is_same_liquid)
 538                                         continue;
 539
 540                                 content_t neighbor_content = neighbor_contents[dir];
 541                                 const ContentFeatures &n_feat = nodedef->get(neighbor_content);
 542
 543                                 // Don't draw face if neighbor is blocking the view
 544                                 if(n_feat.solidness == 2)
 545                                         continue;
 546
 547                                 bool neighbor_is_same_liquid = (neighbor_content == c_source
 548                                                 || neighbor_content == c_flowing);
 549
 550                                 // Don't draw any faces if neighbor same is liquid and top is
 551                                 // same liquid
 552                                 if(neighbor_is_same_liquid == true
 553                                                 && top_is_same_liquid == false)
 554                                         continue;
 555
 556                                 // Use backface culled material if neighbor doesn't have a
 557                                 // solidness of 0
 558                                 const TileSpec *current_tile = &tile_liquid;
 559                                 if(n_feat.solidness != 0 || n_feat.visual_solidness != 0)
 560                                         current_tile = &tile_liquid_bfculled;
 561
 562                                 video::S3DVertex vertices[4] =
 563                                 {
 564                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
 565                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,1),
 566                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
 567                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),
 568                                 };
 569
 570                                 /*
 571                                         If our topside is liquid, set upper border of face
 572                                         at upper border of node
 573                                 */
 574                                 if(top_is_same_liquid)
 575                                 {
 576                                         vertices[2].Pos.Y = 0.5*BS;
 577                                         vertices[3].Pos.Y = 0.5*BS;
 578                                 }
 579                                 /*
 580                                         Otherwise upper position of face is corner levels
 581                                 */
 582                                 else
 583                                 {
 584                                         vertices[2].Pos.Y = corner_levels[side_corners[i][0]];
 585                                         vertices[3].Pos.Y = corner_levels[side_corners[i][1]];
 586                                 }
 587
 588                                 /*
 589                                         If neighbor is liquid, lower border of face is corner
 590                                         liquid levels
 591                                 */
 592                                 if(neighbor_is_same_liquid)
 593                                 {
 594                                         vertices[0].Pos.Y = corner_levels[side_corners[i][1]];
 595                                         vertices[1].Pos.Y = corner_levels[side_corners[i][0]];
 596                                 }
 597                                 /*
 598                                         If neighbor is not liquid, lower border of face is
 599                                         lower border of node
 600                                 */
 601                                 else
 602                                 {
 603                                         vertices[0].Pos.Y = -0.5*BS;
 604                                         vertices[1].Pos.Y = -0.5*BS;
 605                                 }
 606
 607                                 for(s32 j=0; j<4; j++)
 608                                 {
 609                                         if(dir == v3s16(0,0,1))
 610                                                 vertices[j].Pos.rotateXZBy(0);
 611                                         if(dir == v3s16(0,0,-1))
 612                                                 vertices[j].Pos.rotateXZBy(180);
 613                                         if(dir == v3s16(-1,0,0))
 614                                                 vertices[j].Pos.rotateXZBy(90);
 615                                         if(dir == v3s16(1,0,-0))
 616                                                 vertices[j].Pos.rotateXZBy(-90);
 617
 618                                         // Do this to not cause glitches when two liquids are
 619                                         // side-by-side
 620                                         /*if(neighbor_is_same_liquid == false){
 621                                                 vertices[j].Pos.X *= 0.98;
 622                                                 vertices[j].Pos.Z *= 0.98;
 623                                         }*/
 624
 625                                         vertices[j].Pos += intToFloat(p, BS);
 626                                 }
 627
 628                                 u16 indices[] = {0,1,2,2,3,0};
 629                                 // Add to mesh collector
 630                                 collector.append(*current_tile, vertices, 4, indices, 6);
 631                         }
 632
 633                         /*
 634                                 Generate top side, if appropriate
 635                         */
 636
 637                         if(top_is_same_liquid == false)
 638                         {
 639                                 video::S3DVertex vertices[4] =
 640                                 {
 641                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
 642                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,1),
 643                                         video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c, 1,0),
 644                                         video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,0),
 645                                 };
 646
 647                                 // To get backface culling right, the vertices need to go
 648                                 // clockwise around the front of the face. And we happened to
 649                                 // calculate corner levels in exact reverse order.
 650                                 s32 corner_resolve[4] = {3,2,1,0};
 651
 652                                 for(s32 i=0; i<4; i++)
 653                                 {
 654                                         //vertices[i].Pos.Y += liquid_level;
 655                                         //vertices[i].Pos.Y += neighbor_levels[v3s16(0,0,0)];
 656                                         s32 j = corner_resolve[i];
 657                                         vertices[i].Pos.Y += corner_levels[j];
 658                                         vertices[i].Pos += intToFloat(p, BS);
 659                                 }
 660
 661                                 // Default downwards-flowing texture animation goes from
 662                                 // -Z towards +Z, thus the direction is +Z.
 663                                 // Rotate texture to make animation go in flow direction
 664                                 // Positive if liquid moves towards +Z
 665                                 f32 dz = (corner_levels[side_corners[3][0]] +
 666                                                 corner_levels[side_corners[3][1]]) -
 667                                                 (corner_levels[side_corners[2][0]] +
 668                                                 corner_levels[side_corners[2][1]]);
 669                                 // Positive if liquid moves towards +X
 670                                 f32 dx = (corner_levels[side_corners[1][0]] +
 671                                                 corner_levels[side_corners[1][1]]) -
 672                                                 (corner_levels[side_corners[0][0]] +
 673                                                 corner_levels[side_corners[0][1]]);
 674                                 f32 tcoord_angle = atan2(dz, dx) * core::RADTODEG ;
 675                                 v2f tcoord_center(0.5, 0.5);
 676                                 v2f tcoord_translate(
 677                                                 blockpos_nodes.Z + z,
 678                                                 blockpos_nodes.X + x);
 679                                 tcoord_translate.rotateBy(tcoord_angle);
 680                                 tcoord_translate.X -= floor(tcoord_translate.X);
 681                                 tcoord_translate.Y -= floor(tcoord_translate.Y);
 682
 683                                 for(s32 i=0; i<4; i++)
 684                                 {
 685                                         vertices[i].TCoords.rotateBy(
 686                                                         tcoord_angle,
 687                                                         tcoord_center);
 688                                         vertices[i].TCoords += tcoord_translate;
 689                                 }
 690
 691                                 v2f t = vertices[0].TCoords;
 692                                 vertices[0].TCoords = vertices[2].TCoords;
 693                                 vertices[2].TCoords = t;
 694
 695                                 u16 indices[] = {0,1,2,2,3,0};
 696                                 // Add to mesh collector
 697                                 collector.append(tile_liquid, vertices, 4, indices, 6);
 698                         }
 699                 break;}
 700                 case NDT_GLASSLIKE:
 701                 {
 702                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
 703
 704                         u16 l = getInteriorLight(n, 1, nodedef);
 705                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
 706
 707                         for(u32 j=0; j<6; j++)
 708                         {
 709                                 // Check this neighbor
 710                                 v3s16 dir = g_6dirs[j];
 711                                 v3s16 n2p = blockpos_nodes + p + dir;
 712                                 MapNode n2 = data->m_vmanip.getNodeNoEx(n2p);
 713                                 // Don't make face if neighbor is of same type
 714                                 if(n2.getContent() == n.getContent())
 715                                         continue;
 716
 717                                 // The face at Z+
 718                                 video::S3DVertex vertices[4] = {
 719                                         video::S3DVertex(-BS/2,-BS/2,BS/2, dir.X,dir.Y,dir.Z, c, 1,1),
 720                                         video::S3DVertex(BS/2,-BS/2,BS/2, dir.X,dir.Y,dir.Z, c, 0,1),
 721                                         video::S3DVertex(BS/2,BS/2,BS/2, dir.X,dir.Y,dir.Z, c, 0,0),
 722                                         video::S3DVertex(-BS/2,BS/2,BS/2, dir.X,dir.Y,dir.Z, c, 1,0),
 723                                 };
 724
 725                                 // Rotations in the g_6dirs format
 726                                 if(j == 0) // Z+
 727                                         for(u16 i=0; i<4; i++)
 728                                                 vertices[i].Pos.rotateXZBy(0);
 729                                 else if(j == 1) // Y+
 730                                         for(u16 i=0; i<4; i++)
 731                                                 vertices[i].Pos.rotateYZBy(-90);
 732                                 else if(j == 2) // X+
 733                                         for(u16 i=0; i<4; i++)
 734                                                 vertices[i].Pos.rotateXZBy(-90);
 735                                 else if(j == 3) // Z-
 736                                         for(u16 i=0; i<4; i++)
 737                                                 vertices[i].Pos.rotateXZBy(180);
 738                                 else if(j == 4) // Y-
 739                                         for(u16 i=0; i<4; i++)
 740                                                 vertices[i].Pos.rotateYZBy(90);
 741                                 else if(j == 5) // X-
 742                                         for(u16 i=0; i<4; i++)
 743                                                 vertices[i].Pos.rotateXZBy(90);
 744
 745                                 for(u16 i=0; i<4; i++){
 746                                         vertices[i].Pos += intToFloat(p, BS);
 747                                 }
 748
 749                                 u16 indices[] = {0,1,2,2,3,0};
 750                                 // Add to mesh collector
 751                                 collector.append(tile, vertices, 4, indices, 6);
 752                         }
 753                 break;}
 754                 case NDT_GLASSLIKE_FRAMED_OPTIONAL:
 755                         // This is always pre-converted to something else
 756                         FATAL_ERROR("NDT_GLASSLIKE_FRAMED_OPTIONAL not pre-converted as expected");
 757                         break;
 758                 case NDT_GLASSLIKE_FRAMED:
 759                 {
 760                         static const v3s16 dirs[6] = {
 761                                 v3s16( 0, 1, 0),
 762                                 v3s16( 0,-1, 0),
 763                                 v3s16( 1, 0, 0),
 764                                 v3s16(-1, 0, 0),
 765                                 v3s16( 0, 0, 1),
 766                                 v3s16( 0, 0,-1)
 767                         };
 768
 769                         u8 i;
 770                         TileSpec tiles[6];
 771                         for (i = 0; i < 6; i++)
 772                                 tiles[i] = getNodeTile(n, p, dirs[i], data);
 773
 774                         TileSpec glass_tiles[6];
 775                         if (tiles[1].texture && tiles[2].texture && tiles[3].texture) {
 776                                 glass_tiles[0] = tiles[2];
 777                                 glass_tiles[1] = tiles[3];
 778                                 glass_tiles[2] = tiles[1];
 779                                 glass_tiles[3] = tiles[1];
 780                                 glass_tiles[4] = tiles[1];
 781                                 glass_tiles[5] = tiles[1];
 782                         } else {
 783                                 for (i = 0; i < 6; i++)
 784                                         glass_tiles[i] = tiles[1];
 785                         }
 786
 787                         u8 param2 = n.getParam2();
 788                         bool H_merge = ! bool(param2 & 128);
 789                         bool V_merge = ! bool(param2 & 64);
 790                         param2  = param2 & 63;
 791
 792                         u16 l = getInteriorLight(n, 1, nodedef);
 793                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
 794                         v3f pos = intToFloat(p, BS);
 795                         static const float a = BS / 2;
 796                         static const float g = a - 0.003;
 797                         static const float b = .876 * ( BS / 2 );
 798
 799                         static const aabb3f frame_edges[12] = {
 800                                 aabb3f( b, b,-a, a, a, a), // y+
 801                                 aabb3f(-a, b,-a,-b, a, a), // y+
 802                                 aabb3f( b,-a,-a, a,-b, a), // y-
 803                                 aabb3f(-a,-a,-a,-b,-b, a), // y-
 804                                 aabb3f( b,-a, b, a, a, a), // x+
 805                                 aabb3f( b,-a,-a, a, a,-b), // x+
 806                                 aabb3f(-a,-a, b,-b, a, a), // x-
 807                                 aabb3f(-a,-a,-a,-b, a,-b), // x-
 808                                 aabb3f(-a, b, b, a, a, a), // z+
 809                                 aabb3f(-a,-a, b, a,-b, a), // z+
 810                                 aabb3f(-a,-a,-a, a,-b,-b), // z-
 811                                 aabb3f(-a, b,-a, a, a,-b)  // z-
 812                         };
 813                         static const aabb3f glass_faces[6] = {
 814                                 aabb3f(-g, g,-g, g, g, g), // y+
 815                                 aabb3f(-g,-g,-g, g,-g, g), // y-
 816                                 aabb3f( g,-g,-g, g, g, g), // x+
 817                                 aabb3f(-g,-g,-g,-g, g, g), // x-
 818                                 aabb3f(-g,-g, g, g, g, g), // z+
 819                                 aabb3f(-g,-g,-g, g, g,-g)  // z-
 820                         };
 821
 822                         // table of node visible faces, 0 = invisible
 823                         int visible_faces[6] = {0,0,0,0,0,0};
 824
 825                         // table of neighbours, 1 = same type, checked with g_26dirs
 826                         int nb[18] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
 827
 828                         // g_26dirs to check when only horizontal merge is allowed
 829                         int nb_H_dirs[8] = {0,2,3,5,10,11,12,13};
 830
 831                         content_t current = n.getContent();
 832                         content_t n2c;
 833                         MapNode n2;
 834                         v3s16 n2p;
 835
 836                         // neighbours checks for frames visibility
 837
 838                         if (!H_merge && V_merge) {
 839                                 n2p = blockpos_nodes + p + g_26dirs[1];
 840                                 n2 = data->m_vmanip.getNodeNoEx(n2p);
 841                                 n2c = n2.getContent();
 842                                 if (n2c == current || n2c == CONTENT_IGNORE)
 843                                         nb[1] = 1;
 844                                 n2p = blockpos_nodes + p + g_26dirs[4];
 845                                 n2 = data->m_vmanip.getNodeNoEx(n2p);
 846                                 n2c = n2.getContent();
 847                                 if (n2c == current || n2c == CONTENT_IGNORE)
 848                                         nb[4] = 1;
 849                         } else if (H_merge && !V_merge) {
 850                                 for(i = 0; i < 8; i++) {
 851                                         n2p = blockpos_nodes + p + g_26dirs[nb_H_dirs[i]];
 852                                         n2 = data->m_vmanip.getNodeNoEx(n2p);
 853                                         n2c = n2.getContent();
 854                                         if (n2c == current || n2c == CONTENT_IGNORE)
 855                                                 nb[nb_H_dirs[i]] = 1;
 856                                 }
 857                         } else if (H_merge && V_merge) {
 858                                 for(i = 0; i < 18; i++) {
 859                                         n2p = blockpos_nodes + p + g_26dirs[i];
 860                                         n2 = data->m_vmanip.getNodeNoEx(n2p);
 861                                         n2c = n2.getContent();
 862                                         if (n2c == current || n2c == CONTENT_IGNORE)
 863                                                 nb[i] = 1;
 864                                 }
 865                         }
 866
 867                         // faces visibility checks
 868
 869                         if (!V_merge) {
 870                                 visible_faces[0] = 1;
 871                                 visible_faces[1] = 1;
 872                         } else {
 873                                 for(i = 0; i < 2; i++) {
 874                                         n2p = blockpos_nodes + p + dirs[i];
 875                                         n2 = data->m_vmanip.getNodeNoEx(n2p);
 876                                         n2c = n2.getContent();
 877                                         if (n2c != current)
 878                                                 visible_faces[i] = 1;
 879                                 }
 880                         }
 881
 882                         if (!H_merge) {
 883                                 visible_faces[2] = 1;
 884                                 visible_faces[3] = 1;
 885                                 visible_faces[4] = 1;
 886                                 visible_faces[5] = 1;
 887                         } else {
 888                                 for(i = 2; i < 6; i++) {
 889                                         n2p = blockpos_nodes + p + dirs[i];
 890                                         n2 = data->m_vmanip.getNodeNoEx(n2p);
 891                                         n2c = n2.getContent();
 892                                         if (n2c != current)
 893                                                 visible_faces[i] = 1;
 894                                 }
 895                         }
 896
 897                         static const u8 nb_triplet[12*3] = {
 898                                 1,2, 7,  1,5, 6,  4,2,15,  4,5,14,
 899                                 2,0,11,  2,3,13,  5,0,10,  5,3,12,
 900                                 0,1, 8,  0,4,16,  3,4,17,  3,1, 9
 901                         };
 902
 903                         f32 tx1, ty1, tz1, tx2, ty2, tz2;
 904                         aabb3f box;
 905
 906                         for(i = 0; i < 12; i++)
 907                         {
 908                                 int edge_invisible;
 909                                 if (nb[nb_triplet[i*3+2]])
 910                                         edge_invisible = nb[nb_triplet[i*3]] & nb[nb_triplet[i*3+1]];
 911                                 else
 912                                         edge_invisible = nb[nb_triplet[i*3]] ^ nb[nb_triplet[i*3+1]];
 913                                 if (edge_invisible)
 914                                         continue;
 915                                 box = frame_edges[i];
 916                                 box.MinEdge += pos;
 917                                 box.MaxEdge += pos;
 918                                 tx1 = (box.MinEdge.X / BS) + 0.5;
 919                                 ty1 = (box.MinEdge.Y / BS) + 0.5;
 920                                 tz1 = (box.MinEdge.Z / BS) + 0.5;
 921                                 tx2 = (box.MaxEdge.X / BS) + 0.5;
 922                                 ty2 = (box.MaxEdge.Y / BS) + 0.5;
 923                                 tz2 = (box.MaxEdge.Z / BS) + 0.5;
 924                                 f32 txc1[24] = {
 925                                         tx1,   1-tz2,   tx2, 1-tz1,
 926                                         tx1,     tz1,   tx2,   tz2,
 927                                         tz1,   1-ty2,   tz2, 1-ty1,
 928                                         1-tz2, 1-ty2, 1-tz1, 1-ty1,
 929                                         1-tx2, 1-ty2, 1-tx1, 1-ty1,
 930                                         tx1,   1-ty2,   tx2, 1-ty1,
 931                                 };
 932                                 makeCuboid(&collector, box, &tiles[0], 1, c, txc1);
 933                         }
 934
 935                         for(i = 0; i < 6; i++)
 936                         {
 937                                 if (!visible_faces[i])
 938                                         continue;
 939                                 box = glass_faces[i];
 940                                 box.MinEdge += pos;
 941                                 box.MaxEdge += pos;
 942                                 tx1 = (box.MinEdge.X / BS) + 0.5;
 943                                 ty1 = (box.MinEdge.Y / BS) + 0.5;
 944                                 tz1 = (box.MinEdge.Z / BS) + 0.5;
 945                                 tx2 = (box.MaxEdge.X / BS) + 0.5;
 946                                 ty2 = (box.MaxEdge.Y / BS) + 0.5;
 947                                 tz2 = (box.MaxEdge.Z / BS) + 0.5;
 948                                 f32 txc2[24] = {
 949                                         tx1,   1-tz2,   tx2, 1-tz1,
 950                                         tx1,     tz1,   tx2,   tz2,
 951                                         tz1,   1-ty2,   tz2, 1-ty1,
 952                                         1-tz2, 1-ty2, 1-tz1, 1-ty1,
 953                                         1-tx2, 1-ty2, 1-tx1, 1-ty1,
 954                                         tx1,   1-ty2,   tx2, 1-ty1,
 955                                 };
 956                                 makeCuboid(&collector, box, &glass_tiles[i], 1, c, txc2);
 957                         }
 958
 959                         if (param2 > 0 && f.special_tiles[0].texture) {
 960                                 // Interior volume level is in range 0 .. 63,
 961                                 // convert it to -0.5 .. 0.5
 962                                 float vlev = (((float)param2 / 63.0 ) * 2.0 - 1.0);
 963                                 TileSpec interior_tiles[6];
 964                                 for (i = 0; i < 6; i++)
 965                                         interior_tiles[i] = f.special_tiles[0];
 966                                 float offset = 0.003;
 967                                 box = aabb3f(visible_faces[3] ? -b : -a + offset,
 968                                                          visible_faces[1] ? -b : -a + offset,
 969                                                          visible_faces[5] ? -b : -a + offset,
 970                                                          visible_faces[2] ? b : a - offset,
 971                                                          visible_faces[0] ? b * vlev : a * vlev - offset,
 972                                                          visible_faces[4] ? b : a - offset);
 973                                 box.MinEdge += pos;
 974                                 box.MaxEdge += pos;
 975                                 tx1 = (box.MinEdge.X / BS) + 0.5;
 976                                 ty1 = (box.MinEdge.Y / BS) + 0.5;
 977                                 tz1 = (box.MinEdge.Z / BS) + 0.5;
 978                                 tx2 = (box.MaxEdge.X / BS) + 0.5;
 979                                 ty2 = (box.MaxEdge.Y / BS) + 0.5;
 980                                 tz2 = (box.MaxEdge.Z / BS) + 0.5;
 981                                 f32 txc3[24] = {
 982                                         tx1,   1-tz2,   tx2, 1-tz1,
 983                                         tx1,     tz1,   tx2,   tz2,
 984                                         tz1,   1-ty2,   tz2, 1-ty1,
 985                                         1-tz2, 1-ty2, 1-tz1, 1-ty1,
 986                                         1-tx2, 1-ty2, 1-tx1, 1-ty1,
 987                                         tx1,   1-ty2,   tx2, 1-ty1,
 988                                 };
 989                                 makeCuboid(&collector, box, interior_tiles, 6, c,  txc3);
 990                         }
 991                 break;}
 992                 case NDT_ALLFACES:
 993                 {
 994                         TileSpec tile_leaves = getNodeTile(n, p,
 995                                         v3s16(0,0,0), data);
 996
 997                         u16 l = getInteriorLight(n, 1, nodedef);
 998                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
 999
1000                         v3f pos = intToFloat(p, BS);
1001                         aabb3f box(-BS/2,-BS/2,-BS/2,BS/2,BS/2,BS/2);
1002                         box.MinEdge += pos;
1003                         box.MaxEdge += pos;
1004                         makeCuboid(&collector, box, &tile_leaves, 1, c, NULL);
1005                 break;}
1006                 case NDT_ALLFACES_OPTIONAL:
1007                         // This is always pre-converted to something else
1008                         FATAL_ERROR("NDT_ALLFACES_OPTIONAL not pre-converted");
1009                         break;
1010                 case NDT_TORCHLIKE:
1011                 {
1012                         v3s16 dir = n.getWallMountedDir(nodedef);
1013
1014                         u8 tileindex = 0;
1015                         if(dir == v3s16(0,-1,0)){
1016                                 tileindex = 0; // floor
1017                         } else if(dir == v3s16(0,1,0)){
1018                                 tileindex = 1; // ceiling
1019                         // For backwards compatibility
1020                         } else if(dir == v3s16(0,0,0)){
1021                                 tileindex = 0; // floor
1022                         } else {
1023                                 tileindex = 2; // side
1024                         }
1025
1026                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
1027                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
1028                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1029
1030                         u16 l = getInteriorLight(n, 1, nodedef);
1031                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1032
1033                         float s = BS/2*f.visual_scale;
1034                         // Wall at X+ of node
1035                         video::S3DVertex vertices[4] =
1036                         {
1037                                 video::S3DVertex(-s,-s,0, 0,0,0, c, 0,1),
1038                                 video::S3DVertex( s,-s,0, 0,0,0, c, 1,1),
1039                                 video::S3DVertex( s, s,0, 0,0,0, c, 1,0),
1040                                 video::S3DVertex(-s, s,0, 0,0,0, c, 0,0),
1041                         };
1042
1043                         for(s32 i=0; i<4; i++)
1044                         {
1045                                 if(dir == v3s16(1,0,0))
1046                                         vertices[i].Pos.rotateXZBy(0);
1047                                 if(dir == v3s16(-1,0,0))
1048                                         vertices[i].Pos.rotateXZBy(180);
1049                                 if(dir == v3s16(0,0,1))
1050                                         vertices[i].Pos.rotateXZBy(90);
1051                                 if(dir == v3s16(0,0,-1))
1052                                         vertices[i].Pos.rotateXZBy(-90);
1053                                 if(dir == v3s16(0,-1,0))
1054                                         vertices[i].Pos.rotateXZBy(45);
1055                                 if(dir == v3s16(0,1,0))
1056                                         vertices[i].Pos.rotateXZBy(-45);
1057
1058                                 vertices[i].Pos += intToFloat(p, BS);
1059                         }
1060
1061                         u16 indices[] = {0,1,2,2,3,0};
1062                         // Add to mesh collector
1063                         collector.append(tile, vertices, 4, indices, 6);
1064                 break;}
1065                 case NDT_SIGNLIKE:
1066                 {
1067                         TileSpec tile = getNodeTileN(n, p, 0, data);
1068                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
1069                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1070
1071                         u16 l = getInteriorLight(n, 0, nodedef);
1072                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1073
1074                         float d = (float)BS/16;
1075                         float s = BS/2*f.visual_scale;
1076                         // Wall at X+ of node
1077                         video::S3DVertex vertices[4] =
1078                         {
1079                                 video::S3DVertex(BS/2-d,  s,  s, 0,0,0, c, 0,0),
1080                                 video::S3DVertex(BS/2-d,  s, -s, 0,0,0, c, 1,0),
1081                                 video::S3DVertex(BS/2-d, -s, -s, 0,0,0, c, 1,1),
1082                                 video::S3DVertex(BS/2-d, -s,  s, 0,0,0, c, 0,1),
1083                         };
1084
1085                         v3s16 dir = n.getWallMountedDir(nodedef);
1086
1087                         for(s32 i=0; i<4; i++)
1088                         {
1089                                 if(dir == v3s16(1,0,0))
1090                                         vertices[i].Pos.rotateXZBy(0);
1091                                 if(dir == v3s16(-1,0,0))
1092                                         vertices[i].Pos.rotateXZBy(180);
1093                                 if(dir == v3s16(0,0,1))
1094                                         vertices[i].Pos.rotateXZBy(90);
1095                                 if(dir == v3s16(0,0,-1))
1096                                         vertices[i].Pos.rotateXZBy(-90);
1097                                 if(dir == v3s16(0,-1,0))
1098                                         vertices[i].Pos.rotateXYBy(-90);
1099                                 if(dir == v3s16(0,1,0))
1100                                         vertices[i].Pos.rotateXYBy(90);
1101
1102                                 vertices[i].Pos += intToFloat(p, BS);
1103                         }
1104
1105                         u16 indices[] = {0,1,2,2,3,0};
1106                         // Add to mesh collector
1107                         collector.append(tile, vertices, 4, indices, 6);
1108                 break;}
1109                 case NDT_PLANTLIKE:
1110                 {
1111                         TileSpec tile = getNodeTileN(n, p, 0, data);
1112                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1113
1114                         u16 l = getInteriorLight(n, 1, nodedef);
1115                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1116
1117                         float s = BS / 2 * f.visual_scale;
1118
1119                         for (int j = 0; j < 2; j++)
1120                         {
1121                                 video::S3DVertex vertices[4] =
1122                                 {
1123                                         video::S3DVertex(-s,-BS/2, 0, 0,0,0, c, 0,1),
1124                                         video::S3DVertex( s,-BS/2, 0, 0,0,0, c, 1,1),
1125                                         video::S3DVertex( s,-BS/2 + s*2,0, 0,0,0, c, 1,0),
1126                                         video::S3DVertex(-s,-BS/2 + s*2,0, 0,0,0, c, 0,0),
1127                                 };
1128
1129                                 if(j == 0)
1130                                 {
1131                                         for(u16 i = 0; i < 4; i++)
1132                                                 vertices[i].Pos.rotateXZBy(46 + n.param2 * 2);
1133                                 }
1134                                 else if(j == 1)
1135                                 {
1136                                         for(u16 i = 0; i < 4; i++)
1137                                                 vertices[i].Pos.rotateXZBy(-44 + n.param2 * 2);
1138                                 }
1139
1140                                 for (int i = 0; i < 4; i++)
1141                                 {
1142                                         vertices[i].Pos *= f.visual_scale;
1143                                         vertices[i].Pos.Y += BS/2 * (f.visual_scale - 1);
1144                                         vertices[i].Pos += intToFloat(p, BS);
1145                                 }
1146
1147                                 u16 indices[] = {0, 1, 2, 2, 3, 0};
1148                                 // Add to mesh collector
1149                                 collector.append(tile, vertices, 4, indices, 6);
1150                         }
1151                 break;}
1152                 case NDT_FIRELIKE:
1153                 {
1154                         TileSpec tile = getNodeTileN(n, p, 0, data);
1155                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1156
1157                         u16 l = getInteriorLight(n, 1, nodedef);
1158                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1159
1160                         float s = BS/2*f.visual_scale;
1161
1162                         content_t current = n.getContent();
1163                         content_t n2c;
1164                         MapNode n2;
1165                         v3s16 n2p;
1166
1167                         static const v3s16 dirs[6] = {
1168                                 v3s16( 0, 1, 0),
1169                                 v3s16( 0,-1, 0),
1170                                 v3s16( 1, 0, 0),
1171                                 v3s16(-1, 0, 0),
1172                                 v3s16( 0, 0, 1),
1173                                 v3s16( 0, 0,-1)
1174                         };
1175
1176                         int doDraw[6] = {0,0,0,0,0,0};
1177
1178                         bool drawAllFaces = true;
1179
1180                         bool drawBottomFacesOnly = false; // Currently unused
1181
1182                         // Check for adjacent nodes
1183                         for(int i = 0; i < 6; i++)
1184                         {
1185                                 n2p = blockpos_nodes + p + dirs[i];
1186                                 n2 = data->m_vmanip.getNodeNoEx(n2p);
1187                                 n2c = n2.getContent();
1188                                 if (n2c != CONTENT_IGNORE && n2c != CONTENT_AIR && n2c != current) {
1189                                         doDraw[i] = 1;
1190                                         if(drawAllFaces)
1191                                                 drawAllFaces = false;
1192
1193                                 }
1194                         }
1195
1196                         for(int j = 0; j < 6; j++)
1197                         {
1198                                 int vOffset = 0; // Vertical offset of faces after rotation
1199                                 int hOffset = 4; // Horizontal offset of faces to reach the edge
1200
1201                                 video::S3DVertex vertices[4] =
1202                                 {
1203                                         video::S3DVertex(-s,-BS/2,      0, 0,0,0, c, 0,1),
1204                                         video::S3DVertex( s,-BS/2,      0, 0,0,0, c, 1,1),
1205                                         video::S3DVertex( s,-BS/2 + s*2,0, 0,0,0, c, 1,0),
1206                                         video::S3DVertex(-s,-BS/2 + s*2,0, 0,0,0, c, 0,0),
1207                                 };
1208
1209                                 // Calculate which faces should be drawn, (top or sides)
1210                                 if(j == 0 && (drawAllFaces || (doDraw[3] == 1 || doDraw[1] == 1)))
1211                                 {
1212                                         for(int i = 0; i < 4; i++) {
1213                                                 vertices[i].Pos.rotateXZBy(90 + n.param2 * 2);
1214                                                 vertices[i].Pos.rotateXYBy(-10);
1215                                                 vertices[i].Pos.Y -= vOffset;
1216                                                 vertices[i].Pos.X -= hOffset;
1217                                         }
1218                                 }
1219                                 else if(j == 1 && (drawAllFaces || (doDraw[5] == 1 || doDraw[1] == 1)))
1220                                 {
1221                                         for(int i = 0; i < 4; i++) {
1222                                                 vertices[i].Pos.rotateXZBy(180 + n.param2 * 2);
1223                                                 vertices[i].Pos.rotateYZBy(10);
1224                                                 vertices[i].Pos.Y -= vOffset;
1225                                                 vertices[i].Pos.Z -= hOffset;
1226                                         }
1227                                 }
1228                                 else if(j == 2 && (drawAllFaces || (doDraw[2] == 1 || doDraw[1] == 1)))
1229                                 {
1230                                         for(int i = 0; i < 4; i++) {
1231                                                 vertices[i].Pos.rotateXZBy(270 + n.param2 * 2);
1232                                                 vertices[i].Pos.rotateXYBy(10);
1233                                                 vertices[i].Pos.Y -= vOffset;
1234                                                 vertices[i].Pos.X += hOffset;
1235                                         }
1236                                 }
1237                                 else if(j == 3 && (drawAllFaces || (doDraw[4] == 1 || doDraw[1] == 1)))
1238                                 {
1239                                         for(int i = 0; i < 4; i++) {
1240                                                 vertices[i].Pos.rotateYZBy(-10);
1241                                                 vertices[i].Pos.Y -= vOffset;
1242                                                 vertices[i].Pos.Z += hOffset;
1243                                         }
1244                                 }
1245
1246                                 // Center cross-flames
1247                                 else if(j == 4 && (drawAllFaces || doDraw[1] == 1))
1248                                 {
1249                                         for(int i=0; i<4; i++) {
1250                                                 vertices[i].Pos.rotateXZBy(45 + n.param2 * 2);
1251                                                 vertices[i].Pos.Y -= vOffset;
1252                                         }
1253                                 }
1254                                 else if(j == 5 && (drawAllFaces || doDraw[1] == 1))
1255                                 {
1256                                         for(int i=0; i<4; i++) {
1257                                                 vertices[i].Pos.rotateXZBy(-45 + n.param2 * 2);
1258                                                 vertices[i].Pos.Y -= vOffset;
1259                                         }
1260                                 }
1261
1262                                 // Render flames on bottom
1263                                 else if(j == 0 && (drawBottomFacesOnly || (doDraw[0] == 1 && doDraw[1] == 0)))
1264                                 {
1265                                         for(int i = 0; i < 4; i++) {
1266                                                 vertices[i].Pos.rotateYZBy(70);
1267                                                 vertices[i].Pos.rotateXZBy(90 + n.param2 * 2);
1268                                                 vertices[i].Pos.Y += 4.84;
1269                                                 vertices[i].Pos.X -= hOffset+0.7;
1270                                         }
1271                                 }
1272                                 else if(j == 1 && (drawBottomFacesOnly || (doDraw[0] == 1 && doDraw[1] == 0)))
1273                                 {
1274                                         for(int i = 0; i < 4; i++) {
1275                                                 vertices[i].Pos.rotateYZBy(70);
1276                                                 vertices[i].Pos.rotateXZBy(180 + n.param2 * 2);
1277                                                 vertices[i].Pos.Y += 4.84;
1278                                                 vertices[i].Pos.Z -= hOffset+0.7;
1279                                         }
1280                                 }
1281                                 else if(j == 2 && (drawBottomFacesOnly || (doDraw[0] == 1 && doDraw[1] == 0)))
1282                                 {
1283                                         for(int i = 0; i < 4; i++) {
1284                                                 vertices[i].Pos.rotateYZBy(70);
1285                                                 vertices[i].Pos.rotateXZBy(270 + n.param2 * 2);
1286                                                 vertices[i].Pos.Y += 4.84;
1287                                                 vertices[i].Pos.X += hOffset+0.7;
1288                                         }
1289                                 }
1290                                 else if(j == 3 && (drawBottomFacesOnly || (doDraw[0] == 1 && doDraw[1] == 0)))
1291                                 {
1292                                         for(int i = 0; i < 4; i++) {
1293                                                 vertices[i].Pos.rotateYZBy(70);
1294                                                 vertices[i].Pos.Y += 4.84;
1295                                                 vertices[i].Pos.Z += hOffset+0.7;
1296                                         }
1297                                 }
1298                                 else {
1299                                         // Skip faces that aren't adjacent to a node
1300                                         continue;
1301                                 }
1302
1303                                 for(int i=0; i<4; i++)
1304                                 {
1305                                         vertices[i].Pos *= f.visual_scale;
1306                                         vertices[i].Pos += intToFloat(p, BS);
1307                                 }
1308
1309                                 u16 indices[] = {0,1,2,2,3,0};
1310                                 // Add to mesh collector
1311                                 collector.append(tile, vertices, 4, indices, 6);
1312                         }
1313                 break;}
1314                 case NDT_FENCELIKE:
1315                 {
1316                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
1317                         TileSpec tile_nocrack = tile;
1318                         tile_nocrack.material_flags &= ~MATERIAL_FLAG_CRACK;
1319
1320                         // Put wood the right way around in the posts
1321                         TileSpec tile_rot = tile;
1322                         tile_rot.rotation = 1;
1323
1324                         u16 l = getInteriorLight(n, 1, nodedef);
1325                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1326
1327                         const f32 post_rad=(f32)BS/8;
1328                         const f32 bar_rad=(f32)BS/16;
1329                         const f32 bar_len=(f32)(BS/2)-post_rad;
1330
1331                         v3f pos = intToFloat(p, BS);
1332
1333                         // The post - always present
1334                         aabb3f post(-post_rad,-BS/2,-post_rad,post_rad,BS/2,post_rad);
1335                         post.MinEdge += pos;
1336                         post.MaxEdge += pos;
1337                         f32 postuv[24]={
1338                                         6/16.,6/16.,10/16.,10/16.,
1339                                         6/16.,6/16.,10/16.,10/16.,
1340                                         0/16.,0,4/16.,1,
1341                                         4/16.,0,8/16.,1,
1342                                         8/16.,0,12/16.,1,
1343                                         12/16.,0,16/16.,1};
1344                         makeCuboid(&collector, post, &tile_rot, 1, c, postuv);
1345
1346                         // Now a section of fence, +X, if there's a post there
1347                         v3s16 p2 = p;
1348                         p2.X++;
1349                         MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
1350                         const ContentFeatures *f2 = &nodedef->get(n2);
1351                         if(f2->drawtype == NDT_FENCELIKE)
1352                         {
1353                                 aabb3f bar(-bar_len+BS/2,-bar_rad+BS/4,-bar_rad,
1354                                                 bar_len+BS/2,bar_rad+BS/4,bar_rad);
1355                                 bar.MinEdge += pos;
1356                                 bar.MaxEdge += pos;
1357                                 f32 xrailuv[24]={
1358                                         0/16.,2/16.,16/16.,4/16.,
1359                                         0/16.,4/16.,16/16.,6/16.,
1360                                         6/16.,6/16.,8/16.,8/16.,
1361                                         10/16.,10/16.,12/16.,12/16.,
1362                                         0/16.,8/16.,16/16.,10/16.,
1363                                         0/16.,14/16.,16/16.,16/16.};
1364                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
1365                                                 c, xrailuv);
1366                                 bar.MinEdge.Y -= BS/2;
1367                                 bar.MaxEdge.Y -= BS/2;
1368                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
1369                                                 c, xrailuv);
1370                         }
1371
1372                         // Now a section of fence, +Z, if there's a post there
1373                         p2 = p;
1374                         p2.Z++;
1375                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
1376                         f2 = &nodedef->get(n2);
1377                         if(f2->drawtype == NDT_FENCELIKE)
1378                         {
1379                                 aabb3f bar(-bar_rad,-bar_rad+BS/4,-bar_len+BS/2,
1380                                                 bar_rad,bar_rad+BS/4,bar_len+BS/2);
1381                                 bar.MinEdge += pos;
1382                                 bar.MaxEdge += pos;
1383                                 f32 zrailuv[24]={
1384                                         3/16.,1/16.,5/16.,5/16., // cannot rotate; stretch
1385                                         4/16.,1/16.,6/16.,5/16., // for wood texture instead
1386                                         0/16.,9/16.,16/16.,11/16.,
1387                                         0/16.,6/16.,16/16.,8/16.,
1388                                         6/16.,6/16.,8/16.,8/16.,
1389                                         10/16.,10/16.,12/16.,12/16.};
1390                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
1391                                                 c, zrailuv);
1392                                 bar.MinEdge.Y -= BS/2;
1393                                 bar.MaxEdge.Y -= BS/2;
1394                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
1395                                                 c, zrailuv);
1396                         }
1397                 break;}
1398                 case NDT_RAILLIKE:
1399                 {
1400                         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) */
1401                         bool is_rail_z[6];
1402
1403                         content_t thiscontent = n.getContent();
1404                         std::string groupname = "connect_to_raillike"; // name of the group that enables connecting to raillike nodes of different kind
1405                         int self_group = ((ItemGroupList) nodedef->get(n).groups)[groupname];
1406
1407                         u8 index = 0;
1408                         for (s8 y0 = -1; y0 <= 1; y0++) {
1409                                 // Prevent from indexing never used coordinates
1410                                 for (s8 xz = -1; xz <= 1; xz++) {
1411                                         if (xz == 0)
1412                                                 continue;
1413                                         MapNode n_xy = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x + xz, y + y0, z));
1414                                         MapNode n_zy = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y + y0, z + xz));
1415                                         ContentFeatures def_xy = nodedef->get(n_xy);
1416                                         ContentFeatures def_zy = nodedef->get(n_zy);
1417
1418                                         // Check if current node would connect with the rail
1419                                         is_rail_x[index] = ((def_xy.drawtype == NDT_RAILLIKE
1420                                                         && ((ItemGroupList) def_xy.groups)[groupname] == self_group)
1421                                                         || n_xy.getContent() == thiscontent);
1422
1423                                         is_rail_z[index] = ((def_zy.drawtype == NDT_RAILLIKE
1424                                                         && ((ItemGroupList) def_zy.groups)[groupname] == self_group)
1425                                                         || n_zy.getContent() == thiscontent);
1426                                         index++;
1427                                 }
1428                         }
1429
1430                         bool is_rail_x_all[2]; // [0] = negative x, [1] = positive x coordinate from the current node position
1431                         bool is_rail_z_all[2];
1432                         is_rail_x_all[0] = is_rail_x[0] || is_rail_x[2] || is_rail_x[4];
1433                         is_rail_x_all[1] = is_rail_x[1] || is_rail_x[3] || is_rail_x[5];
1434                         is_rail_z_all[0] = is_rail_z[0] || is_rail_z[2] || is_rail_z[4];
1435                         is_rail_z_all[1] = is_rail_z[1] || is_rail_z[3] || is_rail_z[5];
1436
1437                         // reasonable default, flat straight unrotated rail
1438                         bool is_straight = true;
1439                         int adjacencies = 0;
1440                         int angle = 0;
1441                         u8 tileindex = 0;
1442
1443                         // check for sloped rail
1444                         if (is_rail_x[4] || is_rail_x[5] || is_rail_z[4] || is_rail_z[5]) {
1445                                 adjacencies = 5; // 5 means sloped
1446                                 is_straight = true; // sloped is always straight
1447                         } else {
1448                                 // is really straight, rails on both sides
1449                                 is_straight = (is_rail_x_all[0] && is_rail_x_all[1]) || (is_rail_z_all[0] && is_rail_z_all[1]);
1450                                 adjacencies = is_rail_x_all[0] + is_rail_x_all[1] + is_rail_z_all[0] + is_rail_z_all[1];
1451                         }
1452
1453                         switch (adjacencies) {
1454                         case 1:
1455                                 if (is_rail_x_all[0] || is_rail_x_all[1])
1456                                         angle = 90;
1457                                 break;
1458                         case 2:
1459                                 if (!is_straight)
1460                                         tileindex = 1; // curved
1461                                 if (is_rail_x_all[0] && is_rail_x_all[1])
1462                                         angle = 90;
1463                                 if (is_rail_z_all[0] && is_rail_z_all[1]) {
1464                                         if (is_rail_z[4])
1465                                                 angle = 180;
1466                                 }
1467                                 else if (is_rail_x_all[0] && is_rail_z_all[0])
1468                                         angle = 270;
1469                                 else if (is_rail_x_all[0] && is_rail_z_all[1])
1470                                         angle = 180;
1471                                 else if (is_rail_x_all[1] && is_rail_z_all[1])
1472                                         angle = 90;
1473                                 break;
1474                         case 3:
1475                                 // here is where the potential to 'switch' a junction is, but not implemented at present
1476                                 tileindex = 2; // t-junction
1477                                 if(!is_rail_x_all[1])
1478                                         angle = 180;
1479                                 if(!is_rail_z_all[0])
1480                                         angle = 90;
1481                                 if(!is_rail_z_all[1])
1482                                         angle = 270;
1483                                 break;
1484                         case 4:
1485                                 tileindex = 3; // crossing
1486                                 break;
1487                         case 5: //sloped
1488                                 if (is_rail_z[4])
1489                                         angle = 180;
1490                                 if (is_rail_x[4])
1491                                         angle = 90;
1492                                 if (is_rail_x[5])
1493                                         angle = -90;
1494                                 break;
1495                         default:
1496                                 break;
1497                         }
1498
1499                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
1500                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
1501                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
1502
1503                         u16 l = getInteriorLight(n, 0, nodedef);
1504                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1505
1506                         float d = (float)BS/64;
1507                         float s = BS/2;
1508
1509                         short g = -1;
1510                         if (is_rail_x[4] || is_rail_x[5] || is_rail_z[4] || is_rail_z[5])
1511                                 g = 1; //Object is at a slope
1512
1513                         video::S3DVertex vertices[4] =
1514                         {
1515                                         video::S3DVertex(-s,  -s+d,-s,  0,0,0,  c,0,1),
1516                                         video::S3DVertex( s,  -s+d,-s,  0,0,0,  c,1,1),
1517                                         video::S3DVertex( s, g*s+d, s,  0,0,0,  c,1,0),
1518                                         video::S3DVertex(-s, g*s+d, s,  0,0,0,  c,0,0),
1519                         };
1520
1521                         for(s32 i=0; i<4; i++)
1522                         {
1523                                 if(angle != 0)
1524                                         vertices[i].Pos.rotateXZBy(angle);
1525                                 vertices[i].Pos += intToFloat(p, BS);
1526                         }
1527
1528                         u16 indices[] = {0,1,2,2,3,0};
1529                         collector.append(tile, vertices, 4, indices, 6);
1530                 break;}
1531                 case NDT_NODEBOX:
1532                 {
1533                         static const v3s16 tile_dirs[6] = {
1534                                 v3s16(0, 1, 0),
1535                                 v3s16(0, -1, 0),
1536                                 v3s16(1, 0, 0),
1537                                 v3s16(-1, 0, 0),
1538                                 v3s16(0, 0, 1),
1539                                 v3s16(0, 0, -1)
1540                         };
1541                         TileSpec tiles[6];
1542
1543                         u16 l = getInteriorLight(n, 1, nodedef);
1544                         video::SColor c = MapBlock_LightColor(255, l, f.light_source);
1545
1546                         v3f pos = intToFloat(p, BS);
1547
1548                         std::vector<aabb3f> boxes = n.getNodeBoxes(nodedef);
1549                         for(std::vector<aabb3f>::iterator
1550                                         i = boxes.begin();
1551                                         i != boxes.end(); i++)
1552                         {
1553                         for(int j = 0; j < 6; j++)
1554                                 {
1555                                 // Handles facedir rotation for textures
1556                                 tiles[j] = getNodeTile(n, p, tile_dirs[j], data);
1557                                 }
1558                                 aabb3f box = *i;
1559                                 box.MinEdge += pos;
1560                                 box.MaxEdge += pos;
1561
1562                                 f32 temp;
1563                                 if (box.MinEdge.X > box.MaxEdge.X)
1564                                 {
1565                                         temp=box.MinEdge.X;
1566                                         box.MinEdge.X=box.MaxEdge.X;
1567                                         box.MaxEdge.X=temp;
1568                                 }
1569                                 if (box.MinEdge.Y > box.MaxEdge.Y)
1570                                 {
1571                                         temp=box.MinEdge.Y;
1572                                         box.MinEdge.Y=box.MaxEdge.Y;
1573                                         box.MaxEdge.Y=temp;
1574                                 }
1575                                 if (box.MinEdge.Z > box.MaxEdge.Z)
1576                                 {
1577                                         temp=box.MinEdge.Z;
1578                                         box.MinEdge.Z=box.MaxEdge.Z;
1579                                         box.MaxEdge.Z=temp;
1580                                 }
1581
1582                                 //
1583                                 // Compute texture coords
1584                                 f32 tx1 = (box.MinEdge.X/BS)+0.5;
1585                                 f32 ty1 = (box.MinEdge.Y/BS)+0.5;
1586                                 f32 tz1 = (box.MinEdge.Z/BS)+0.5;
1587                                 f32 tx2 = (box.MaxEdge.X/BS)+0.5;
1588                                 f32 ty2 = (box.MaxEdge.Y/BS)+0.5;
1589                                 f32 tz2 = (box.MaxEdge.Z/BS)+0.5;
1590                                 f32 txc[24] = {
1591                                         // up
1592                                         tx1, 1-tz2, tx2, 1-tz1,
1593                                         // down
1594                                         tx1, tz1, tx2, tz2,
1595                                         // right
1596                                         tz1, 1-ty2, tz2, 1-ty1,
1597                                         // left
1598                                         1-tz2, 1-ty2, 1-tz1, 1-ty1,
1599                                         // back
1600                                         1-tx2, 1-ty2, 1-tx1, 1-ty1,
1601                                         // front
1602                                         tx1, 1-ty2, tx2, 1-ty1,
1603                                 };
1604                                 makeCuboid(&collector, box, tiles, 6, c, txc);
1605                         }
1606                 break;}
1607                 case NDT_MESH:
1608                 {
1609                         v3f pos = intToFloat(p, BS);
1610                         video::SColor c = MapBlock_LightColor(255, getInteriorLight(n, 1, nodedef), f.light_source);
1611
1612                         u8 facedir = 0;
1613                         if (f.param_type_2 == CPT2_FACEDIR) {
1614                                 facedir = n.getFaceDir(nodedef);
1615                         } else if (f.param_type_2 == CPT2_WALLMOUNTED) {
1616                                 //convert wallmounted to 6dfacedir.
1617                                 //when cache enabled, it is already converted
1618                                 facedir = n.getWallMounted(nodedef);
1619                                 if (!enable_mesh_cache) {
1620                                         static const u8 wm_to_6d[6] = {20, 0, 16+1, 12+3, 8, 4+2};
1621                                         facedir = wm_to_6d[facedir];
1622                                 }
1623                         }
1624
1625                         if (f.mesh_ptr[facedir]) {
1626                                 // use cached meshes
1627                                 for(u16 j = 0; j < f.mesh_ptr[0]->getMeshBufferCount(); j++) {
1628                                         scene::IMeshBuffer *buf = f.mesh_ptr[facedir]->getMeshBuffer(j);
1629                                         collector.append(getNodeTileN(n, p, j, data),
1630                                                 (video::S3DVertex *)buf->getVertices(), buf->getVertexCount(),
1631                                                 buf->getIndices(), buf->getIndexCount(), pos, c);
1632                                 }
1633                         } else if (f.mesh_ptr[0]) {
1634                                 // no cache, clone and rotate mesh
1635                                 scene::IMesh* mesh = cloneMesh(f.mesh_ptr[0]);
1636                                 rotateMeshBy6dFacedir(mesh, facedir);
1637                                 recalculateBoundingBox(mesh);
1638                                 meshmanip->recalculateNormals(mesh, true, false);
1639                                 for(u16 j = 0; j < mesh->getMeshBufferCount(); j++) {
1640                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
1641                                         collector.append(getNodeTileN(n, p, j, data),
1642                                                 (video::S3DVertex *)buf->getVertices(), buf->getVertexCount(),
1643                                                 buf->getIndices(), buf->getIndexCount(), pos, c);
1644                                 }
1645                                 mesh->drop();
1646                         }
1647                 break;}
1648                 }
1649         }
1650
1651         /*
1652                 Caused by incorrect alpha blending, selection mesh needs to be created as
1653                 last element to ensure it gets blended correct over nodes with alpha channel
1654         */
1655         // Create selection mesh
1656         v3s16 p = data->m_highlighted_pos_relative;
1657         if (data->m_show_hud &&
1658                         (p.X >= 0) && (p.X < MAP_BLOCKSIZE) &&
1659                         (p.Y >= 0) && (p.Y < MAP_BLOCKSIZE) &&
1660                         (p.Z >= 0) && (p.Z < MAP_BLOCKSIZE)) {
1661
1662                 MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + p);
1663                 if(n.getContent() != CONTENT_AIR) {
1664                         // Get selection mesh light level
1665                         static const v3s16 dirs[7] = {
1666                                         v3s16( 0, 0, 0),
1667                                         v3s16( 0, 1, 0),
1668                                         v3s16( 0,-1, 0),
1669                                         v3s16( 1, 0, 0),
1670                                         v3s16(-1, 0, 0),
1671                                         v3s16( 0, 0, 1),
1672                                         v3s16( 0, 0,-1)
1673                         };
1674
1675                         u16 l = 0;
1676                         u16 l1 = 0;
1677                         for (u8 i = 0; i < 7; i++) {
1678                                 MapNode n1 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p + dirs[i]);
1679                                 l1 = getInteriorLight(n1, -4, nodedef);
1680                                 if (l1 > l)
1681                                         l = l1;
1682                         }
1683                         video::SColor c = MapBlock_LightColor(255, l, 0);
1684                         data->m_highlight_mesh_color = c;
1685                         std::vector<aabb3f> boxes = n.getSelectionBoxes(nodedef);
1686                         TileSpec h_tile;
1687                         h_tile.material_flags |= MATERIAL_FLAG_HIGHLIGHTED;
1688                         h_tile.texture = tsrc->getTextureForMesh("halo.png",&h_tile.texture_id);
1689                         v3f pos = intToFloat(p, BS);
1690                         f32 d = 0.05 * BS;
1691                         for (std::vector<aabb3f>::iterator i = boxes.begin();
1692                                         i != boxes.end(); i++) {
1693                                 aabb3f box = *i;
1694                                 box.MinEdge += v3f(-d, -d, -d) + pos;
1695                                 box.MaxEdge += v3f(d, d, d) + pos;
1696                                 makeCuboid(&collector, box, &h_tile, 1, c, NULL);
1697                         }
1698                 }
1699         }
1700 }
1701