src/content_mapblock.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU 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
  22 #include "main.h" // For g_settings
  23 #include "mapblock_mesh.h" // For MapBlock_LightColor() and MeshCollector
  24 #include "settings.h"
  25 #include "nodedef.h"
  26 #include "tile.h"
  27 #include "gamedef.h"
  28
  29 // Create a cuboid.
  30 //  collector - the MeshCollector for the resulting polygons
  31 //  box       - the position and size of the box
  32 //  tiles     - the tiles (materials) to use (for all 6 faces)
  33 //  tilecount - number of entries in tiles, 1<=tilecount<=6
  34 //  c         - vertex colour - used for all
  35 //  txc       - texture coordinates - this is a list of texture coordinates
  36 //              for the opposite corners of each face - therefore, there
  37 //              should be (2+2)*6=24 values in the list. Alternatively, pass
  38 //              NULL to use the entire texture for each face. The order of
  39 //              the faces in the list is up-down-right-left-back-front
  40 //              (compatible with ContentFeatures). If you specified 0,0,1,1
  41 //              for each face, that would be the same as passing NULL.
  42 void makeCuboid(MeshCollector *collector, const aabb3f &box,
  43         const TileSpec *tiles, int tilecount,
  44         video::SColor &c, const f32* txc)
  45 {
  46         assert(tilecount >= 1 && tilecount <= 6);
  47
  48         v3f min = box.MinEdge;
  49         v3f max = box.MaxEdge;
  50
  51         if(txc == NULL)
  52         {
  53                 static const f32 txc_default[24] = {
  54                         0,0,1,1,
  55                         0,0,1,1,
  56                         0,0,1,1,
  57                         0,0,1,1,
  58                         0,0,1,1,
  59                         0,0,1,1
  60                 };
  61                 txc = txc_default;
  62         }
  63
  64         video::S3DVertex vertices[24] =
  65         {
  66                 // up
  67                 video::S3DVertex(min.X,max.Y,max.Z, 0,1,0, c, txc[0],txc[1]),
  68                 video::S3DVertex(max.X,max.Y,max.Z, 0,1,0, c, txc[2],txc[1]),
  69                 video::S3DVertex(max.X,max.Y,min.Z, 0,1,0, c, txc[2],txc[3]),
  70                 video::S3DVertex(min.X,max.Y,min.Z, 0,1,0, c, txc[0],txc[3]),
  71                 // down
  72                 video::S3DVertex(min.X,min.Y,min.Z, 0,-1,0, c, txc[4],txc[5]),
  73                 video::S3DVertex(max.X,min.Y,min.Z, 0,-1,0, c, txc[6],txc[5]),
  74                 video::S3DVertex(max.X,min.Y,max.Z, 0,-1,0, c, txc[6],txc[7]),
  75                 video::S3DVertex(min.X,min.Y,max.Z, 0,-1,0, c, txc[4],txc[7]),
  76                 // right
  77                 video::S3DVertex(max.X,max.Y,min.Z, 1,0,0, c, txc[ 8],txc[9]),
  78                 video::S3DVertex(max.X,max.Y,max.Z, 1,0,0, c, txc[10],txc[9]),
  79                 video::S3DVertex(max.X,min.Y,max.Z, 1,0,0, c, txc[10],txc[11]),
  80                 video::S3DVertex(max.X,min.Y,min.Z, 1,0,0, c, txc[ 8],txc[11]),
  81                 // left
  82                 video::S3DVertex(min.X,max.Y,max.Z, -1,0,0, c, txc[12],txc[13]),
  83                 video::S3DVertex(min.X,max.Y,min.Z, -1,0,0, c, txc[14],txc[13]),
  84                 video::S3DVertex(min.X,min.Y,min.Z, -1,0,0, c, txc[14],txc[15]),
  85                 video::S3DVertex(min.X,min.Y,max.Z, -1,0,0, c, txc[12],txc[15]),
  86                 // back
  87                 video::S3DVertex(max.X,max.Y,max.Z, 0,0,1, c, txc[16],txc[17]),
  88                 video::S3DVertex(min.X,max.Y,max.Z, 0,0,1, c, txc[18],txc[17]),
  89                 video::S3DVertex(min.X,min.Y,max.Z, 0,0,1, c, txc[18],txc[19]),
  90                 video::S3DVertex(max.X,min.Y,max.Z, 0,0,1, c, txc[16],txc[19]),
  91                 // front
  92                 video::S3DVertex(min.X,max.Y,min.Z, 0,0,-1, c, txc[20],txc[21]),
  93                 video::S3DVertex(max.X,max.Y,min.Z, 0,0,-1, c, txc[22],txc[21]),
  94                 video::S3DVertex(max.X,min.Y,min.Z, 0,0,-1, c, txc[22],txc[23]),
  95                 video::S3DVertex(min.X,min.Y,min.Z, 0,0,-1, c, txc[20],txc[23]),
  96         };
  97
  98         for(s32 j=0; j<24; j++)
  99         {
 100                 int tileindex = MYMIN(j/4, tilecount-1);
 101                 vertices[j].TCoords *= tiles[tileindex].texture.size;
 102                 vertices[j].TCoords += tiles[tileindex].texture.pos;
 103         }
 104
 105         u16 indices[] = {0,1,2,2,3,0};
 106
 107         // Add to mesh collector
 108         for(s32 j=0; j<24; j+=4)
 109         {
 110                 int tileindex = MYMIN(j/4, tilecount-1);
 111                 collector->append(tiles[tileindex],
 112                                 vertices+j, 4, indices, 6);
 113         }
 114 }
 115
 116 void mapblock_mesh_generate_special(MeshMakeData *data,
 117                 MeshCollector &collector)
 118 {
 119         INodeDefManager *nodedef = data->m_gamedef->ndef();
 120
 121         // 0ms
 122         //TimeTaker timer("mapblock_mesh_generate_special()");
 123
 124         /*
 125                 Some settings
 126         */
 127         bool new_style_water = g_settings->getBool("new_style_water");
 128
 129         float node_liquid_level = 1.0;
 130         if(new_style_water)
 131                 node_liquid_level = 0.85;
 132
 133         v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;
 134
 135         for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 136         for(s16 y=0; y<MAP_BLOCKSIZE; y++)
 137         for(s16 x=0; x<MAP_BLOCKSIZE; x++)
 138         {
 139                 v3s16 p(x,y,z);
 140
 141                 MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes+p);
 142                 const ContentFeatures &f = nodedef->get(n);
 143
 144                 // Only solidness=0 stuff is drawn here
 145                 if(f.solidness != 0)
 146                         continue;
 147
 148                 switch(f.drawtype){
 149                 default:
 150                         infostream<<"Got "<<f.drawtype<<std::endl;
 151                         assert(0);
 152                         break;
 153                 case NDT_AIRLIKE:
 154                         break;
 155                 case NDT_LIQUID:
 156                 {
 157                         /*
 158                                 Add water sources to mesh if using new style
 159                         */
 160                         TileSpec tile_liquid = f.special_tiles[0];
 161                         AtlasPointer &pa_liquid = tile_liquid.texture;
 162
 163                         bool top_is_air = false;
 164                         MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 165                         if(n.getContent() == CONTENT_AIR)
 166                                 top_is_air = true;
 167
 168                         if(top_is_air == false)
 169                                 continue;
 170
 171                         u16 l = getInteriorLight(n, 0, data);
 172                         video::SColor c = MapBlock_LightColor(f.alpha, l);
 173
 174                         video::S3DVertex vertices[4] =
 175                         {
 176                                 video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 177                                                 pa_liquid.x0(), pa_liquid.y1()),
 178                                 video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 179                                                 pa_liquid.x1(), pa_liquid.y1()),
 180                                 video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 181                                                 pa_liquid.x1(), pa_liquid.y0()),
 182                                 video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 183                                                 pa_liquid.x0(), pa_liquid.y0()),
 184                         };
 185
 186                         v3f offset(p.X, p.Y + (-0.5+node_liquid_level)*BS, p.Z);
 187                         for(s32 i=0; i<4; i++)
 188                         {
 189                                 vertices[i].Pos += offset;
 190                         }
 191
 192                         u16 indices[] = {0,1,2,2,3,0};
 193                         // Add to mesh collector
 194                         collector.append(tile_liquid, vertices, 4, indices, 6);
 195                 break;}
 196                 case NDT_FLOWINGLIQUID:
 197                 {
 198                         /*
 199                                 Add flowing liquid to mesh
 200                         */
 201                         TileSpec tile_liquid = f.special_tiles[0];
 202                         TileSpec tile_liquid_bfculled = f.special_tiles[1];
 203                         AtlasPointer &pa_liquid = tile_liquid.texture;
 204
 205                         bool top_is_same_liquid = false;
 206                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 207                         content_t c_flowing = nodedef->getId(f.liquid_alternative_flowing);
 208                         content_t c_source = nodedef->getId(f.liquid_alternative_source);
 209                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 210                                 top_is_same_liquid = true;
 211
 212                         u16 l = 0;
 213                         // If this liquid emits light and doesn't contain light, draw
 214                         // it at what it emits, for an increased effect
 215                         u8 light_source = nodedef->get(n).light_source;
 216                         if(light_source != 0){
 217                                 //l = decode_light(undiminish_light(light_source));
 218                                 l = decode_light(light_source);
 219                                 l = l | (l<<8);
 220                         }
 221                         // Use the light of the node on top if possible
 222                         else if(nodedef->get(ntop).param_type == CPT_LIGHT)
 223                                 l = getInteriorLight(ntop, 0, data);
 224                         // Otherwise use the light of this node (the liquid)
 225                         else
 226                                 l = getInteriorLight(n, 0, data);
 227                         video::SColor c = MapBlock_LightColor(f.alpha, l);
 228
 229                         // Neighbor liquid levels (key = relative position)
 230                         // Includes current node
 231                         core::map<v3s16, f32> neighbor_levels;
 232                         core::map<v3s16, content_t> neighbor_contents;
 233                         core::map<v3s16, u8> neighbor_flags;
 234                         const u8 neighborflag_top_is_same_liquid = 0x01;
 235                         v3s16 neighbor_dirs[9] = {
 236                                 v3s16(0,0,0),
 237                                 v3s16(0,0,1),
 238                                 v3s16(0,0,-1),
 239                                 v3s16(1,0,0),
 240                                 v3s16(-1,0,0),
 241                                 v3s16(1,0,1),
 242                                 v3s16(-1,0,-1),
 243                                 v3s16(1,0,-1),
 244                                 v3s16(-1,0,1),
 245                         };
 246                         for(u32 i=0; i<9; i++)
 247                         {
 248                                 content_t content = CONTENT_AIR;
 249                                 float level = -0.5 * BS;
 250                                 u8 flags = 0;
 251                                 // Check neighbor
 252                                 v3s16 p2 = p + neighbor_dirs[i];
 253                                 MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 254                                 if(n2.getContent() != CONTENT_IGNORE)
 255                                 {
 256                                         content = n2.getContent();
 257
 258                                         if(n2.getContent() == c_source)
 259                                                 level = (-0.5+node_liquid_level) * BS;
 260                                         else if(n2.getContent() == c_flowing)
 261                                                 level = (-0.5 + ((float)(n2.param2&LIQUID_LEVEL_MASK)
 262                                                                 + 0.5) / 8.0 * node_liquid_level) * BS;
 263
 264                                         // Check node above neighbor.
 265                                         // NOTE: This doesn't get executed if neighbor
 266                                         //       doesn't exist
 267                                         p2.Y += 1;
 268                                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 269                                         if(n2.getContent() == c_source ||
 270                                                         n2.getContent() == c_flowing)
 271                                                 flags |= neighborflag_top_is_same_liquid;
 272                                 }
 273
 274                                 neighbor_levels.insert(neighbor_dirs[i], level);
 275                                 neighbor_contents.insert(neighbor_dirs[i], content);
 276                                 neighbor_flags.insert(neighbor_dirs[i], flags);
 277                         }
 278
 279                         // Corner heights (average between four liquids)
 280                         f32 corner_levels[4];
 281
 282                         v3s16 halfdirs[4] = {
 283                                 v3s16(0,0,0),
 284                                 v3s16(1,0,0),
 285                                 v3s16(1,0,1),
 286                                 v3s16(0,0,1),
 287                         };
 288                         for(u32 i=0; i<4; i++)
 289                         {
 290                                 v3s16 cornerdir = halfdirs[i];
 291                                 float cornerlevel = 0;
 292                                 u32 valid_count = 0;
 293                                 u32 air_count = 0;
 294                                 for(u32 j=0; j<4; j++)
 295                                 {
 296                                         v3s16 neighbordir = cornerdir - halfdirs[j];
 297                                         content_t content = neighbor_contents[neighbordir];
 298                                         // If top is liquid, draw starting from top of node
 299                                         if(neighbor_flags[neighbordir] &
 300                                                         neighborflag_top_is_same_liquid)
 301                                         {
 302                                                 cornerlevel = 0.5*BS;
 303                                                 valid_count = 1;
 304                                                 break;
 305                                         }
 306                                         // Source is always the same height
 307                                         else if(content == c_source)
 308                                         {
 309                                                 cornerlevel = (-0.5+node_liquid_level)*BS;
 310                                                 valid_count = 1;
 311                                                 break;
 312                                         }
 313                                         // Flowing liquid has level information
 314                                         else if(content == c_flowing)
 315                                         {
 316                                                 cornerlevel += neighbor_levels[neighbordir];
 317                                                 valid_count++;
 318                                         }
 319                                         else if(content == CONTENT_AIR)
 320                                         {
 321                                                 air_count++;
 322                                         }
 323                                 }
 324                                 if(air_count >= 2)
 325                                         cornerlevel = -0.5*BS;
 326                                 else if(valid_count > 0)
 327                                         cornerlevel /= valid_count;
 328                                 corner_levels[i] = cornerlevel;
 329                         }
 330
 331                         /*
 332                                 Generate sides
 333                         */
 334
 335                         v3s16 side_dirs[4] = {
 336                                 v3s16(1,0,0),
 337                                 v3s16(-1,0,0),
 338                                 v3s16(0,0,1),
 339                                 v3s16(0,0,-1),
 340                         };
 341                         s16 side_corners[4][2] = {
 342                                 {1, 2},
 343                                 {3, 0},
 344                                 {2, 3},
 345                                 {0, 1},
 346                         };
 347                         for(u32 i=0; i<4; i++)
 348                         {
 349                                 v3s16 dir = side_dirs[i];
 350
 351                                 /*
 352                                         If our topside is liquid and neighbor's topside
 353                                         is liquid, don't draw side face
 354                                 */
 355                                 if(top_is_same_liquid &&
 356                                                 neighbor_flags[dir] & neighborflag_top_is_same_liquid)
 357                                         continue;
 358
 359                                 content_t neighbor_content = neighbor_contents[dir];
 360                                 const ContentFeatures &n_feat = nodedef->get(neighbor_content);
 361
 362                                 // Don't draw face if neighbor is blocking the view
 363                                 if(n_feat.solidness == 2)
 364                                         continue;
 365
 366                                 bool neighbor_is_same_liquid = (neighbor_content == c_source
 367                                                 || neighbor_content == c_flowing);
 368
 369                                 // Don't draw any faces if neighbor same is liquid and top is
 370                                 // same liquid
 371                                 if(neighbor_is_same_liquid == true
 372                                                 && top_is_same_liquid == false)
 373                                         continue;
 374
 375                                 // Use backface culled material if neighbor doesn't have a
 376                                 // solidness of 0
 377                                 const TileSpec *current_tile = &tile_liquid;
 378                                 if(n_feat.solidness != 0 || n_feat.visual_solidness != 0)
 379                                         current_tile = &tile_liquid_bfculled;
 380
 381                                 video::S3DVertex vertices[4] =
 382                                 {
 383                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 384                                                         pa_liquid.x0(), pa_liquid.y1()),
 385                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 386                                                         pa_liquid.x1(), pa_liquid.y1()),
 387                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 388                                                         pa_liquid.x1(), pa_liquid.y0()),
 389                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 390                                                         pa_liquid.x0(), pa_liquid.y0()),
 391                                 };
 392
 393                                 /*
 394                                         If our topside is liquid, set upper border of face
 395                                         at upper border of node
 396                                 */
 397                                 if(top_is_same_liquid)
 398                                 {
 399                                         vertices[2].Pos.Y = 0.5*BS;
 400                                         vertices[3].Pos.Y = 0.5*BS;
 401                                 }
 402                                 /*
 403                                         Otherwise upper position of face is corner levels
 404                                 */
 405                                 else
 406                                 {
 407                                         vertices[2].Pos.Y = corner_levels[side_corners[i][0]];
 408                                         vertices[3].Pos.Y = corner_levels[side_corners[i][1]];
 409                                 }
 410
 411                                 /*
 412                                         If neighbor is liquid, lower border of face is corner
 413                                         liquid levels
 414                                 */
 415                                 if(neighbor_is_same_liquid)
 416                                 {
 417                                         vertices[0].Pos.Y = corner_levels[side_corners[i][1]];
 418                                         vertices[1].Pos.Y = corner_levels[side_corners[i][0]];
 419                                 }
 420                                 /*
 421                                         If neighbor is not liquid, lower border of face is
 422                                         lower border of node
 423                                 */
 424                                 else
 425                                 {
 426                                         vertices[0].Pos.Y = -0.5*BS;
 427                                         vertices[1].Pos.Y = -0.5*BS;
 428                                 }
 429
 430                                 for(s32 j=0; j<4; j++)
 431                                 {
 432                                         if(dir == v3s16(0,0,1))
 433                                                 vertices[j].Pos.rotateXZBy(0);
 434                                         if(dir == v3s16(0,0,-1))
 435                                                 vertices[j].Pos.rotateXZBy(180);
 436                                         if(dir == v3s16(-1,0,0))
 437                                                 vertices[j].Pos.rotateXZBy(90);
 438                                         if(dir == v3s16(1,0,-0))
 439                                                 vertices[j].Pos.rotateXZBy(-90);
 440
 441                                         // Do this to not cause glitches when two liquids are
 442                                         // side-by-side
 443                                         /*if(neighbor_is_same_liquid == false){
 444                                                 vertices[j].Pos.X *= 0.98;
 445                                                 vertices[j].Pos.Z *= 0.98;
 446                                         }*/
 447
 448                                         vertices[j].Pos += intToFloat(p, BS);
 449                                 }
 450
 451                                 u16 indices[] = {0,1,2,2,3,0};
 452                                 // Add to mesh collector
 453                                 collector.append(*current_tile, vertices, 4, indices, 6);
 454                         }
 455
 456                         /*
 457                                 Generate top side, if appropriate
 458                         */
 459
 460                         if(top_is_same_liquid == false)
 461                         {
 462                                 video::S3DVertex vertices[4] =
 463                                 {
 464                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 465                                                         pa_liquid.x0(), pa_liquid.y1()),
 466                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 467                                                         pa_liquid.x1(), pa_liquid.y1()),
 468                                         video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 469                                                         pa_liquid.x1(), pa_liquid.y0()),
 470                                         video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 471                                                         pa_liquid.x0(), pa_liquid.y0()),
 472                                 };
 473
 474                                 // To get backface culling right, the vertices need to go
 475                                 // clockwise around the front of the face. And we happened to
 476                                 // calculate corner levels in exact reverse order.
 477                                 s32 corner_resolve[4] = {3,2,1,0};
 478
 479                                 for(s32 i=0; i<4; i++)
 480                                 {
 481                                         //vertices[i].Pos.Y += liquid_level;
 482                                         //vertices[i].Pos.Y += neighbor_levels[v3s16(0,0,0)];
 483                                         s32 j = corner_resolve[i];
 484                                         vertices[i].Pos.Y += corner_levels[j];
 485                                         vertices[i].Pos += intToFloat(p, BS);
 486                                 }
 487
 488                                 // Default downwards-flowing texture animation goes from
 489                                 // -Z towards +Z, thus the direction is +Z.
 490                                 // Rotate texture to make animation go in flow direction
 491                                 // Positive if liquid moves towards +Z
 492                                 int dz = (corner_levels[side_corners[2][0]] +
 493                                                 corner_levels[side_corners[2][1]] <
 494                                                 corner_levels[side_corners[3][0]] +
 495                                                 corner_levels[side_corners[3][1]]);
 496                                 // Positive if liquid moves towards +X
 497                                 int dx = (corner_levels[side_corners[0][0]] +
 498                                                 corner_levels[side_corners[0][1]] <
 499                                                 corner_levels[side_corners[1][0]] +
 500                                                 corner_levels[side_corners[1][1]]);
 501                                 // -X
 502                                 if(-dx >= abs(dz))
 503                                 {
 504                                         v2f t = vertices[0].TCoords;
 505                                         vertices[0].TCoords = vertices[1].TCoords;
 506                                         vertices[1].TCoords = vertices[2].TCoords;
 507                                         vertices[2].TCoords = vertices[3].TCoords;
 508                                         vertices[3].TCoords = t;
 509                                 }
 510                                 // +X
 511                                 if(dx >= abs(dz))
 512                                 {
 513                                         v2f t = vertices[0].TCoords;
 514                                         vertices[0].TCoords = vertices[3].TCoords;
 515                                         vertices[3].TCoords = vertices[2].TCoords;
 516                                         vertices[2].TCoords = vertices[1].TCoords;
 517                                         vertices[1].TCoords = t;
 518                                 }
 519                                 // -Z
 520                                 if(-dz >= abs(dx))
 521                                 {
 522                                         v2f t = vertices[0].TCoords;
 523                                         vertices[0].TCoords = vertices[3].TCoords;
 524                                         vertices[3].TCoords = vertices[2].TCoords;
 525                                         vertices[2].TCoords = vertices[1].TCoords;
 526                                         vertices[1].TCoords = t;
 527                                         t = vertices[0].TCoords;
 528                                         vertices[0].TCoords = vertices[3].TCoords;
 529                                         vertices[3].TCoords = vertices[2].TCoords;
 530                                         vertices[2].TCoords = vertices[1].TCoords;
 531                                         vertices[1].TCoords = t;
 532                                 }
 533
 534                                 u16 indices[] = {0,1,2,2,3,0};
 535                                 // Add to mesh collector
 536                                 collector.append(tile_liquid, vertices, 4, indices, 6);
 537                         }
 538                 break;}
 539                 case NDT_GLASSLIKE:
 540                 {
 541                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
 542                         AtlasPointer ap = tile.texture;
 543
 544                         u16 l = getInteriorLight(n, 1, data);
 545                         video::SColor c = MapBlock_LightColor(255, l);
 546
 547                         for(u32 j=0; j<6; j++)
 548                         {
 549                                 // Check this neighbor
 550                                 v3s16 n2p = blockpos_nodes + p + g_6dirs[j];
 551                                 MapNode n2 = data->m_vmanip.getNodeNoEx(n2p);
 552                                 // Don't make face if neighbor is of same type
 553                                 if(n2.getContent() == n.getContent())
 554                                         continue;
 555
 556                                 // The face at Z+
 557                                 video::S3DVertex vertices[4] =
 558                                 {
 559                                         video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c,
 560                                                 ap.x0(), ap.y1()),
 561                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c,
 562                                                 ap.x1(), ap.y1()),
 563                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c,
 564                                                 ap.x1(), ap.y0()),
 565                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c,
 566                                                 ap.x0(), ap.y0()),
 567                                 };
 568
 569                                 // Rotations in the g_6dirs format
 570                                 if(j == 0) // Z+
 571                                         for(u16 i=0; i<4; i++)
 572                                                 vertices[i].Pos.rotateXZBy(0);
 573                                 else if(j == 1) // Y+
 574                                         for(u16 i=0; i<4; i++)
 575                                                 vertices[i].Pos.rotateYZBy(-90);
 576                                 else if(j == 2) // X+
 577                                         for(u16 i=0; i<4; i++)
 578                                                 vertices[i].Pos.rotateXZBy(-90);
 579                                 else if(j == 3) // Z-
 580                                         for(u16 i=0; i<4; i++)
 581                                                 vertices[i].Pos.rotateXZBy(180);
 582                                 else if(j == 4) // Y-
 583                                         for(u16 i=0; i<4; i++)
 584                                                 vertices[i].Pos.rotateYZBy(90);
 585                                 else if(j == 5) // X-
 586                                         for(u16 i=0; i<4; i++)
 587                                                 vertices[i].Pos.rotateXZBy(90);
 588
 589                                 for(u16 i=0; i<4; i++){
 590                                         vertices[i].Pos += intToFloat(p, BS);
 591                                 }
 592
 593                                 u16 indices[] = {0,1,2,2,3,0};
 594                                 // Add to mesh collector
 595                                 collector.append(tile, vertices, 4, indices, 6);
 596                         }
 597                 break;}
 598                 case NDT_ALLFACES:
 599                 {
 600                         TileSpec tile_leaves = getNodeTile(n, p,
 601                                         v3s16(0,0,0), data);
 602                         AtlasPointer pa_leaves = tile_leaves.texture;
 603
 604                         u16 l = getInteriorLight(n, 1, data);
 605                         video::SColor c = MapBlock_LightColor(255, l);
 606
 607                         v3f pos = intToFloat(p, BS);
 608                         aabb3f box(-BS/2,-BS/2,-BS/2,BS/2,BS/2,BS/2);
 609                         box.MinEdge += pos;
 610                         box.MaxEdge += pos;
 611                         makeCuboid(&collector, box, &tile_leaves, 1, c, NULL);
 612                 break;}
 613                 case NDT_ALLFACES_OPTIONAL:
 614                         // This is always pre-converted to something else
 615                         assert(0);
 616                         break;
 617                 case NDT_TORCHLIKE:
 618                 {
 619                         v3s16 dir = n.getWallMountedDir(nodedef);
 620
 621                         u8 tileindex = 0;
 622                         if(dir == v3s16(0,-1,0)){
 623                                 tileindex = 0; // floor
 624                         } else if(dir == v3s16(0,1,0)){
 625                                 tileindex = 1; // ceiling
 626                         // For backwards compatibility
 627                         } else if(dir == v3s16(0,0,0)){
 628                                 tileindex = 0; // floor
 629                         } else {
 630                                 tileindex = 2; // side
 631                         }
 632
 633                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
 634                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 635                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 636
 637                         AtlasPointer ap = tile.texture;
 638
 639                         video::SColor c(255,255,255,255);
 640
 641                         // Wall at X+ of node
 642                         video::S3DVertex vertices[4] =
 643                         {
 644                                 video::S3DVertex(-BS/2,-BS/2,0, 0,0,0, c,
 645                                                 ap.x0(), ap.y1()),
 646                                 video::S3DVertex(BS/2,-BS/2,0, 0,0,0, c,
 647                                                 ap.x1(), ap.y1()),
 648                                 video::S3DVertex(BS/2,BS/2,0, 0,0,0, c,
 649                                                 ap.x1(), ap.y0()),
 650                                 video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c,
 651                                                 ap.x0(), ap.y0()),
 652                         };
 653
 654                         for(s32 i=0; i<4; i++)
 655                         {
 656                                 if(dir == v3s16(1,0,0))
 657                                         vertices[i].Pos.rotateXZBy(0);
 658                                 if(dir == v3s16(-1,0,0))
 659                                         vertices[i].Pos.rotateXZBy(180);
 660                                 if(dir == v3s16(0,0,1))
 661                                         vertices[i].Pos.rotateXZBy(90);
 662                                 if(dir == v3s16(0,0,-1))
 663                                         vertices[i].Pos.rotateXZBy(-90);
 664                                 if(dir == v3s16(0,-1,0))
 665                                         vertices[i].Pos.rotateXZBy(45);
 666                                 if(dir == v3s16(0,1,0))
 667                                         vertices[i].Pos.rotateXZBy(-45);
 668
 669                                 vertices[i].Pos += intToFloat(p, BS);
 670                         }
 671
 672                         u16 indices[] = {0,1,2,2,3,0};
 673                         // Add to mesh collector
 674                         collector.append(tile, vertices, 4, indices, 6);
 675                 break;}
 676                 case NDT_SIGNLIKE:
 677                 {
 678                         TileSpec tile = getNodeTileN(n, p, 0, data);
 679                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 680                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 681                         AtlasPointer ap = tile.texture;
 682
 683                         u16 l = getInteriorLight(n, 0, data);
 684                         video::SColor c = MapBlock_LightColor(255, l);
 685
 686                         float d = (float)BS/16;
 687                         // Wall at X+ of node
 688                         video::S3DVertex vertices[4] =
 689                         {
 690                                 video::S3DVertex(BS/2-d,BS/2,BS/2, 0,0,0, c,
 691                                                 ap.x0(), ap.y0()),
 692                                 video::S3DVertex(BS/2-d,BS/2,-BS/2, 0,0,0, c,
 693                                                 ap.x1(), ap.y0()),
 694                                 video::S3DVertex(BS/2-d,-BS/2,-BS/2, 0,0,0, c,
 695                                                 ap.x1(), ap.y1()),
 696                                 video::S3DVertex(BS/2-d,-BS/2,BS/2, 0,0,0, c,
 697                                                 ap.x0(), ap.y1()),
 698                         };
 699
 700                         v3s16 dir = n.getWallMountedDir(nodedef);
 701
 702                         for(s32 i=0; i<4; i++)
 703                         {
 704                                 if(dir == v3s16(1,0,0))
 705                                         vertices[i].Pos.rotateXZBy(0);
 706                                 if(dir == v3s16(-1,0,0))
 707                                         vertices[i].Pos.rotateXZBy(180);
 708                                 if(dir == v3s16(0,0,1))
 709                                         vertices[i].Pos.rotateXZBy(90);
 710                                 if(dir == v3s16(0,0,-1))
 711                                         vertices[i].Pos.rotateXZBy(-90);
 712                                 if(dir == v3s16(0,-1,0))
 713                                         vertices[i].Pos.rotateXYBy(-90);
 714                                 if(dir == v3s16(0,1,0))
 715                                         vertices[i].Pos.rotateXYBy(90);
 716
 717                                 vertices[i].Pos += intToFloat(p, BS);
 718                         }
 719
 720                         u16 indices[] = {0,1,2,2,3,0};
 721                         // Add to mesh collector
 722                         collector.append(tile, vertices, 4, indices, 6);
 723                 break;}
 724                 case NDT_PLANTLIKE:
 725                 {
 726                         TileSpec tile = getNodeTileN(n, p, 0, data);
 727                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 728                         AtlasPointer ap = tile.texture;
 729
 730                         u16 l = getInteriorLight(n, 1, data);
 731                         video::SColor c = MapBlock_LightColor(255, l);
 732
 733                         for(u32 j=0; j<4; j++)
 734                         {
 735                                 video::S3DVertex vertices[4] =
 736                                 {
 737                                         video::S3DVertex(-BS/2*f.visual_scale,-BS/2,0, 0,0,0, c,
 738                                                 ap.x0(), ap.y1()),
 739                                         video::S3DVertex( BS/2*f.visual_scale,-BS/2,0, 0,0,0, c,
 740                                                 ap.x1(), ap.y1()),
 741                                         video::S3DVertex( BS/2*f.visual_scale,
 742                                                 -BS/2 + f.visual_scale*BS,0, 0,0,0, c,
 743                                                 ap.x1(), ap.y0()),
 744                                         video::S3DVertex(-BS/2*f.visual_scale,
 745                                                 -BS/2 + f.visual_scale*BS,0, 0,0,0, c,
 746                                                 ap.x0(), ap.y0()),
 747                                 };
 748
 749                                 if(j == 0)
 750                                 {
 751                                         for(u16 i=0; i<4; i++)
 752                                                 vertices[i].Pos.rotateXZBy(45);
 753                                 }
 754                                 else if(j == 1)
 755                                 {
 756                                         for(u16 i=0; i<4; i++)
 757                                                 vertices[i].Pos.rotateXZBy(-45);
 758                                 }
 759                                 else if(j == 2)
 760                                 {
 761                                         for(u16 i=0; i<4; i++)
 762                                                 vertices[i].Pos.rotateXZBy(135);
 763                                 }
 764                                 else if(j == 3)
 765                                 {
 766                                         for(u16 i=0; i<4; i++)
 767                                                 vertices[i].Pos.rotateXZBy(-135);
 768                                 }
 769
 770                                 for(u16 i=0; i<4; i++)
 771                                 {
 772                                         vertices[i].Pos *= f.visual_scale;
 773                                         vertices[i].Pos += intToFloat(p, BS);
 774                                 }
 775
 776                                 u16 indices[] = {0,1,2,2,3,0};
 777                                 // Add to mesh collector
 778                                 collector.append(tile, vertices, 4, indices, 6);
 779                         }
 780                 break;}
 781                 case NDT_FENCELIKE:
 782                 {
 783                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
 784                         TileSpec tile_nocrack = tile;
 785                         tile_nocrack.material_flags &= ~MATERIAL_FLAG_CRACK;
 786
 787                         // A hack to put wood the right way around in the posts
 788                         ITextureSource *tsrc = data->m_gamedef->tsrc();
 789                         TileSpec tile_rot = tile;
 790                         tile_rot.texture = tsrc->getTexture(tsrc->getTextureName(
 791                                         tile.texture.id) + "^[transformR90");
 792
 793                         u16 l = getInteriorLight(n, 1, data);
 794                         video::SColor c = MapBlock_LightColor(255, l);
 795
 796                         const f32 post_rad=(f32)BS/8;
 797                         const f32 bar_rad=(f32)BS/16;
 798                         const f32 bar_len=(f32)(BS/2)-post_rad;
 799
 800                         v3f pos = intToFloat(p, BS);
 801
 802                         // The post - always present
 803                         aabb3f post(-post_rad,-BS/2,-post_rad,post_rad,BS/2,post_rad);
 804                         post.MinEdge += pos;
 805                         post.MaxEdge += pos;
 806                         f32 postuv[24]={
 807                                         6/16.,6/16.,10/16.,10/16.,
 808                                         6/16.,6/16.,10/16.,10/16.,
 809                                         0/16.,0,4/16.,1,
 810                                         4/16.,0,8/16.,1,
 811                                         8/16.,0,12/16.,1,
 812                                         12/16.,0,16/16.,1};
 813                         makeCuboid(&collector, post, &tile_rot, 1, c, postuv);
 814
 815                         // Now a section of fence, +X, if there's a post there
 816                         v3s16 p2 = p;
 817                         p2.X++;
 818                         MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 819                         const ContentFeatures *f2 = &nodedef->get(n2);
 820                         if(f2->drawtype == NDT_FENCELIKE)
 821                         {
 822                                 aabb3f bar(-bar_len+BS/2,-bar_rad+BS/4,-bar_rad,
 823                                                 bar_len+BS/2,bar_rad+BS/4,bar_rad);
 824                                 bar.MinEdge += pos;
 825                                 bar.MaxEdge += pos;
 826                                 f32 xrailuv[24]={
 827                                         0/16.,2/16.,16/16.,4/16.,
 828                                         0/16.,4/16.,16/16.,6/16.,
 829                                         6/16.,6/16.,8/16.,8/16.,
 830                                         10/16.,10/16.,12/16.,12/16.,
 831                                         0/16.,8/16.,16/16.,10/16.,
 832                                         0/16.,14/16.,16/16.,16/16.};
 833                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 834                                                 c, xrailuv);
 835                                 bar.MinEdge.Y -= BS/2;
 836                                 bar.MaxEdge.Y -= BS/2;
 837                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 838                                                 c, xrailuv);
 839                         }
 840
 841                         // Now a section of fence, +Z, if there's a post there
 842                         p2 = p;
 843                         p2.Z++;
 844                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 845                         f2 = &nodedef->get(n2);
 846                         if(f2->drawtype == NDT_FENCELIKE)
 847                         {
 848                                 aabb3f bar(-bar_rad,-bar_rad+BS/4,-bar_len+BS/2,
 849                                                 bar_rad,bar_rad+BS/4,bar_len+BS/2);
 850                                 bar.MinEdge += pos;
 851                                 bar.MaxEdge += pos;
 852                                 f32 zrailuv[24]={
 853                                         3/16.,1/16.,5/16.,5/16., // cannot rotate; stretch
 854                                         4/16.,1/16.,6/16.,5/16., // for wood texture instead
 855                                         0/16.,9/16.,16/16.,11/16.,
 856                                         0/16.,6/16.,16/16.,8/16.,
 857                                         6/16.,6/16.,8/16.,8/16.,
 858                                         10/16.,10/16.,12/16.,12/16.};
 859                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 860                                                 c, zrailuv);
 861                                 bar.MinEdge.Y -= BS/2;
 862                                 bar.MaxEdge.Y -= BS/2;
 863                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 864                                                 c, zrailuv);
 865                         }
 866                 break;}
 867                 case NDT_RAILLIKE:
 868                 {
 869                         bool is_rail_x [] = { false, false };  /* x-1, x+1 */
 870                         bool is_rail_z [] = { false, false };  /* z-1, z+1 */
 871
 872                         bool is_rail_z_minus_y [] = { false, false };  /* z-1, z+1; y-1 */
 873                         bool is_rail_x_minus_y [] = { false, false };  /* x-1, z+1; y-1 */
 874                         bool is_rail_z_plus_y [] = { false, false };  /* z-1, z+1; y+1 */
 875                         bool is_rail_x_plus_y [] = { false, false };  /* x-1, x+1; y+1 */
 876
 877                         MapNode n_minus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1,y,z));
 878                         MapNode n_plus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1,y,z));
 879                         MapNode n_minus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z-1));
 880                         MapNode n_plus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z+1));
 881                         MapNode n_plus_x_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1, y+1, z));
 882                         MapNode n_plus_x_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1, y-1, z));
 883                         MapNode n_minus_x_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1, y+1, z));
 884                         MapNode n_minus_x_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1, y-1, z));
 885                         MapNode n_plus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z+1));
 886                         MapNode n_minus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z-1));
 887                         MapNode n_plus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z+1));
 888                         MapNode n_minus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z-1));
 889
 890                         content_t thiscontent = n.getContent();
 891                         if(n_minus_x.getContent() == thiscontent)
 892                                 is_rail_x[0] = true;
 893                         if (n_minus_x_minus_y.getContent() == thiscontent)
 894                                 is_rail_x_minus_y[0] = true;
 895                         if(n_minus_x_plus_y.getContent() == thiscontent)
 896                                 is_rail_x_plus_y[0] = true;
 897
 898                         if(n_plus_x.getContent() == thiscontent)
 899                                 is_rail_x[1] = true;
 900                         if (n_plus_x_minus_y.getContent() == thiscontent)
 901                                 is_rail_x_minus_y[1] = true;
 902                         if(n_plus_x_plus_y.getContent() == thiscontent)
 903                                 is_rail_x_plus_y[1] = true;
 904
 905                         if(n_minus_z.getContent() == thiscontent)
 906                                 is_rail_z[0] = true;
 907                         if (n_minus_z_minus_y.getContent() == thiscontent)
 908                                 is_rail_z_minus_y[0] = true;
 909                         if(n_minus_z_plus_y.getContent() == thiscontent)
 910                                 is_rail_z_plus_y[0] = true;
 911
 912                         if(n_plus_z.getContent() == thiscontent)
 913                                 is_rail_z[1] = true;
 914                         if (n_plus_z_minus_y.getContent() == thiscontent)
 915                                 is_rail_z_minus_y[1] = true;
 916                         if(n_plus_z_plus_y.getContent() == thiscontent)
 917                                 is_rail_z_plus_y[1] = true;
 918
 919                         bool is_rail_x_all[] = {false, false};
 920                         bool is_rail_z_all[] = {false, false};
 921                         is_rail_x_all[0]=is_rail_x[0] || is_rail_x_minus_y[0] || is_rail_x_plus_y[0];
 922                         is_rail_x_all[1]=is_rail_x[1] || is_rail_x_minus_y[1] || is_rail_x_plus_y[1];
 923                         is_rail_z_all[0]=is_rail_z[0] || is_rail_z_minus_y[0] || is_rail_z_plus_y[0];
 924                         is_rail_z_all[1]=is_rail_z[1] || is_rail_z_minus_y[1] || is_rail_z_plus_y[1];
 925
 926                         // reasonable default, flat straight unrotated rail
 927                         bool is_straight = true;
 928                         int adjacencies = 0;
 929                         int angle = 0;
 930                         u8 tileindex = 0;
 931
 932                         // check for sloped rail
 933                         if (is_rail_x_plus_y[0] || is_rail_x_plus_y[1] || is_rail_z_plus_y[0] || is_rail_z_plus_y[1])
 934                         {
 935                                 adjacencies = 5; //5 means sloped
 936                                 is_straight = true; // sloped is always straight
 937                         }
 938                         else
 939                         {
 940                                 // is really straight, rails on both sides
 941                                 is_straight = (is_rail_x_all[0] && is_rail_x_all[1]) || (is_rail_z_all[0] && is_rail_z_all[1]);
 942                                 adjacencies = is_rail_x_all[0] + is_rail_x_all[1] + is_rail_z_all[0] + is_rail_z_all[1];
 943                         }
 944
 945                         switch (adjacencies) {
 946                         case 1:
 947                                 if(is_rail_x_all[0] || is_rail_x_all[1])
 948                                         angle = 90;
 949                                 break;
 950                         case 2:
 951                                 if(!is_straight)
 952                                         tileindex = 1; // curved
 953                                 if(is_rail_x_all[0] && is_rail_x_all[1])
 954                                         angle = 90;
 955                                 if(is_rail_z_all[0] && is_rail_z_all[1]){
 956                                         if (n_minus_z_plus_y.getContent() == thiscontent) angle = 180;
 957                                 }
 958                                 else if(is_rail_x_all[0] && is_rail_z_all[0])
 959                                         angle = 270;
 960                                 else if(is_rail_x_all[0] && is_rail_z_all[1])
 961                                         angle = 180;
 962                                 else if(is_rail_x_all[1] && is_rail_z_all[1])
 963                                         angle = 90;
 964                                 break;
 965                         case 3:
 966                                 // here is where the potential to 'switch' a junction is, but not implemented at present
 967                                 tileindex = 2; // t-junction
 968                                 if(!is_rail_x_all[1])
 969                                         angle=180;
 970                                 if(!is_rail_z_all[0])
 971                                         angle=90;
 972                                 if(!is_rail_z_all[1])
 973                                         angle=270;
 974                                 break;
 975                         case 4:
 976                                 tileindex = 3; // crossing
 977                                 break;
 978                         case 5: //sloped
 979                                 if(is_rail_z_plus_y[0])
 980                                         angle = 180;
 981                                 if(is_rail_x_plus_y[0])
 982                                         angle = 90;
 983                                 if(is_rail_x_plus_y[1])
 984                                         angle = -90;
 985                                 break;
 986                         default:
 987                                 break;
 988                         }
 989
 990                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
 991                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 992                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 993
 994                         AtlasPointer ap = tile.texture;
 995
 996                         u16 l = getInteriorLight(n, 0, data);
 997                         video::SColor c = MapBlock_LightColor(255, l);
 998
 999                         float d = (float)BS/64;
1000
1001                         char g=-1;
1002                         if (is_rail_x_plus_y[0] || is_rail_x_plus_y[1] || is_rail_z_plus_y[0] || is_rail_z_plus_y[1])
1003                                 g=1; //Object is at a slope
1004
1005                         video::S3DVertex vertices[4] =
1006                         {
1007                                         video::S3DVertex(-BS/2,-BS/2+d,-BS/2, 0,0,0, c,
1008                                                         ap.x0(), ap.y1()),
1009                                         video::S3DVertex(BS/2,-BS/2+d,-BS/2, 0,0,0, c,
1010                                                         ap.x1(), ap.y1()),
1011                                         video::S3DVertex(BS/2,g*BS/2+d,BS/2, 0,0,0, c,
1012                                                         ap.x1(), ap.y0()),
1013                                         video::S3DVertex(-BS/2,g*BS/2+d,BS/2, 0,0,0, c,
1014                                                         ap.x0(), ap.y0()),
1015                         };
1016
1017                         for(s32 i=0; i<4; i++)
1018                         {
1019                                 if(angle != 0)
1020                                         vertices[i].Pos.rotateXZBy(angle);
1021                                 vertices[i].Pos += intToFloat(p, BS);
1022                         }
1023
1024                         u16 indices[] = {0,1,2,2,3,0};
1025                         collector.append(tile, vertices, 4, indices, 6);
1026                 break;}
1027                 }
1028         }
1029 }
1030