src/content_mapblock.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "content_mapblock.h"
  21
  22 #include "main.h" // For g_settings
  23 #include "mapblock_mesh.h" // For MapBlock_LightColor() and MeshCollector
  24 #include "settings.h"
  25 #include "nodedef.h"
  26 #include "tile.h"
  27 #include "gamedef.h"
  28
  29 // Create a cuboid.
  30 //  collector - the MeshCollector for the resulting polygons
  31 //  box       - the position and size of the box
  32 //  tiles     - the tiles (materials) to use (for all 6 faces)
  33 //  tilecount - number of entries in tiles, 1<=tilecount<=6
  34 //  c         - vertex colour - used for all
  35 //  txc       - texture coordinates - this is a list of texture coordinates
  36 //              for the opposite corners of each face - therefore, there
  37 //              should be (2+2)*6=24 values in the list. Alternatively, pass
  38 //              NULL to use the entire texture for each face. The order of
  39 //              the faces in the list is up-down-right-left-back-front
  40 //              (compatible with ContentFeatures). If you specified 0,0,1,1
  41 //              for each face, that would be the same as passing NULL.
  42 void makeCuboid(MeshCollector *collector, const aabb3f &box,
  43         const TileSpec *tiles, int tilecount,
  44         video::SColor &c, const f32* txc)
  45 {
  46         assert(tilecount >= 1 && tilecount <= 6);
  47
  48         v3f min = box.MinEdge;
  49         v3f max = box.MaxEdge;
  50
  51         if(txc == NULL)
  52         {
  53                 static const f32 txc_default[24] = {
  54                         0,0,1,1,
  55                         0,0,1,1,
  56                         0,0,1,1,
  57                         0,0,1,1,
  58                         0,0,1,1,
  59                         0,0,1,1
  60                 };
  61                 txc = txc_default;
  62         }
  63
  64         video::S3DVertex vertices[24] =
  65         {
  66                 // up
  67                 video::S3DVertex(min.X,max.Y,max.Z, 0,1,0, c, txc[0],txc[1]),
  68                 video::S3DVertex(max.X,max.Y,max.Z, 0,1,0, c, txc[2],txc[1]),
  69                 video::S3DVertex(max.X,max.Y,min.Z, 0,1,0, c, txc[2],txc[3]),
  70                 video::S3DVertex(min.X,max.Y,min.Z, 0,1,0, c, txc[0],txc[3]),
  71                 // down
  72                 video::S3DVertex(min.X,min.Y,min.Z, 0,-1,0, c, txc[4],txc[5]),
  73                 video::S3DVertex(max.X,min.Y,min.Z, 0,-1,0, c, txc[6],txc[5]),
  74                 video::S3DVertex(max.X,min.Y,max.Z, 0,-1,0, c, txc[6],txc[7]),
  75                 video::S3DVertex(min.X,min.Y,max.Z, 0,-1,0, c, txc[4],txc[7]),
  76                 // right
  77                 video::S3DVertex(max.X,max.Y,min.Z, 1,0,0, c, txc[ 8],txc[9]),
  78                 video::S3DVertex(max.X,max.Y,max.Z, 1,0,0, c, txc[10],txc[9]),
  79                 video::S3DVertex(max.X,min.Y,max.Z, 1,0,0, c, txc[10],txc[11]),
  80                 video::S3DVertex(max.X,min.Y,min.Z, 1,0,0, c, txc[ 8],txc[11]),
  81                 // left
  82                 video::S3DVertex(min.X,max.Y,max.Z, -1,0,0, c, txc[12],txc[13]),
  83                 video::S3DVertex(min.X,max.Y,min.Z, -1,0,0, c, txc[14],txc[13]),
  84                 video::S3DVertex(min.X,min.Y,min.Z, -1,0,0, c, txc[14],txc[15]),
  85                 video::S3DVertex(min.X,min.Y,max.Z, -1,0,0, c, txc[12],txc[15]),
  86                 // back
  87                 video::S3DVertex(max.X,max.Y,max.Z, 0,0,1, c, txc[16],txc[17]),
  88                 video::S3DVertex(min.X,max.Y,max.Z, 0,0,1, c, txc[18],txc[17]),
  89                 video::S3DVertex(min.X,min.Y,max.Z, 0,0,1, c, txc[18],txc[19]),
  90                 video::S3DVertex(max.X,min.Y,max.Z, 0,0,1, c, txc[16],txc[19]),
  91                 // front
  92                 video::S3DVertex(min.X,max.Y,min.Z, 0,0,-1, c, txc[20],txc[21]),
  93                 video::S3DVertex(max.X,max.Y,min.Z, 0,0,-1, c, txc[22],txc[21]),
  94                 video::S3DVertex(max.X,min.Y,min.Z, 0,0,-1, c, txc[22],txc[23]),
  95                 video::S3DVertex(min.X,min.Y,min.Z, 0,0,-1, c, txc[20],txc[23]),
  96         };
  97
  98         for(s32 j=0; j<24; j++)
  99         {
 100                 int tileindex = MYMIN(j/4, tilecount-1);
 101                 vertices[j].TCoords *= tiles[tileindex].texture.size;
 102                 vertices[j].TCoords += tiles[tileindex].texture.pos;
 103         }
 104
 105         u16 indices[] = {0,1,2,2,3,0};
 106
 107         // Add to mesh collector
 108         for(s32 j=0; j<24; j+=4)
 109         {
 110                 int tileindex = MYMIN(j/4, tilecount-1);
 111                 collector->append(tiles[tileindex],
 112                                 vertices+j, 4, indices, 6);
 113         }
 114 }
 115
 116 void mapblock_mesh_generate_special(MeshMakeData *data,
 117                 MeshCollector &collector)
 118 {
 119         INodeDefManager *nodedef = data->m_gamedef->ndef();
 120
 121         // 0ms
 122         //TimeTaker timer("mapblock_mesh_generate_special()");
 123
 124         /*
 125                 Some settings
 126         */
 127         bool new_style_water = g_settings->getBool("new_style_water");
 128
 129         float node_liquid_level = 1.0;
 130         if(new_style_water)
 131                 node_liquid_level = 0.85;
 132
 133         v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;
 134
 135         for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 136         for(s16 y=0; y<MAP_BLOCKSIZE; y++)
 137         for(s16 x=0; x<MAP_BLOCKSIZE; x++)
 138         {
 139                 v3s16 p(x,y,z);
 140
 141                 MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes+p);
 142                 const ContentFeatures &f = nodedef->get(n);
 143
 144                 // Only solidness=0 stuff is drawn here
 145                 if(f.solidness != 0)
 146                         continue;
 147
 148                 switch(f.drawtype){
 149                 default:
 150                         infostream<<"Got "<<f.drawtype<<std::endl;
 151                         assert(0);
 152                         break;
 153                 case NDT_AIRLIKE:
 154                         break;
 155                 case NDT_LIQUID:
 156                 {
 157                         /*
 158                                 Add water sources to mesh if using new style
 159                         */
 160                         TileSpec tile_liquid = f.special_tiles[0];
 161                         AtlasPointer &pa_liquid = tile_liquid.texture;
 162
 163                         bool top_is_air = false;
 164                         MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 165                         if(n.getContent() == CONTENT_AIR)
 166                                 top_is_air = true;
 167
 168                         if(top_is_air == false)
 169                                 continue;
 170
 171                         u16 l = getInteriorLight(n, 0, data);
 172                         video::SColor c = MapBlock_LightColor(f.alpha, l);
 173
 174                         video::S3DVertex vertices[4] =
 175                         {
 176                                 video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 177                                                 pa_liquid.x0(), pa_liquid.y1()),
 178                                 video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 179                                                 pa_liquid.x1(), pa_liquid.y1()),
 180                                 video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 181                                                 pa_liquid.x1(), pa_liquid.y0()),
 182                                 video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 183                                                 pa_liquid.x0(), pa_liquid.y0()),
 184                         };
 185
 186                         v3f offset(p.X, p.Y + (-0.5+node_liquid_level)*BS, p.Z);
 187                         for(s32 i=0; i<4; i++)
 188                         {
 189                                 vertices[i].Pos += offset;
 190                         }
 191
 192                         u16 indices[] = {0,1,2,2,3,0};
 193                         // Add to mesh collector
 194                         collector.append(tile_liquid, vertices, 4, indices, 6);
 195                 break;}
 196                 case NDT_FLOWINGLIQUID:
 197                 {
 198                         /*
 199                                 Add flowing liquid to mesh
 200                         */
 201                         TileSpec tile_liquid = f.special_tiles[0];
 202                         TileSpec tile_liquid_bfculled = f.special_tiles[1];
 203                         AtlasPointer &pa_liquid = tile_liquid.texture;
 204
 205                         bool top_is_same_liquid = false;
 206                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 207                         content_t c_flowing = nodedef->getId(f.liquid_alternative_flowing);
 208                         content_t c_source = nodedef->getId(f.liquid_alternative_source);
 209                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 210                                 top_is_same_liquid = true;
 211
 212                         u16 l = 0;
 213                         // 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                                 // This fixes a strange bug
 475                                 s32 corner_resolve[4] = {3,2,1,0};
 476
 477                                 for(s32 i=0; i<4; i++)
 478                                 {
 479                                         //vertices[i].Pos.Y += liquid_level;
 480                                         //vertices[i].Pos.Y += neighbor_levels[v3s16(0,0,0)];
 481                                         s32 j = corner_resolve[i];
 482                                         vertices[i].Pos.Y += corner_levels[j];
 483                                         vertices[i].Pos += intToFloat(p, BS);
 484                                 }
 485
 486                                 u16 indices[] = {0,1,2,2,3,0};
 487                                 // Add to mesh collector
 488                                 collector.append(tile_liquid, vertices, 4, indices, 6);
 489                         }
 490                 break;}
 491                 case NDT_GLASSLIKE:
 492                 {
 493                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
 494                         AtlasPointer ap = tile.texture;
 495
 496                         u16 l = getInteriorLight(n, 1, data);
 497                         video::SColor c = MapBlock_LightColor(255, l);
 498
 499                         for(u32 j=0; j<6; j++)
 500                         {
 501                                 // Check this neighbor
 502                                 v3s16 n2p = blockpos_nodes + p + g_6dirs[j];
 503                                 MapNode n2 = data->m_vmanip.getNodeNoEx(n2p);
 504                                 // Don't make face if neighbor is of same type
 505                                 if(n2.getContent() == n.getContent())
 506                                         continue;
 507
 508                                 // The face at Z+
 509                                 video::S3DVertex vertices[4] =
 510                                 {
 511                                         video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c,
 512                                                 ap.x0(), ap.y1()),
 513                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c,
 514                                                 ap.x1(), ap.y1()),
 515                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c,
 516                                                 ap.x1(), ap.y0()),
 517                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c,
 518                                                 ap.x0(), ap.y0()),
 519                                 };
 520
 521                                 // Rotations in the g_6dirs format
 522                                 if(j == 0) // Z+
 523                                         for(u16 i=0; i<4; i++)
 524                                                 vertices[i].Pos.rotateXZBy(0);
 525                                 else if(j == 1) // Y+
 526                                         for(u16 i=0; i<4; i++)
 527                                                 vertices[i].Pos.rotateYZBy(-90);
 528                                 else if(j == 2) // X+
 529                                         for(u16 i=0; i<4; i++)
 530                                                 vertices[i].Pos.rotateXZBy(-90);
 531                                 else if(j == 3) // Z-
 532                                         for(u16 i=0; i<4; i++)
 533                                                 vertices[i].Pos.rotateXZBy(180);
 534                                 else if(j == 4) // Y-
 535                                         for(u16 i=0; i<4; i++)
 536                                                 vertices[i].Pos.rotateYZBy(90);
 537                                 else if(j == 5) // X-
 538                                         for(u16 i=0; i<4; i++)
 539                                                 vertices[i].Pos.rotateXZBy(90);
 540
 541                                 for(u16 i=0; i<4; i++){
 542                                         vertices[i].Pos += intToFloat(p, BS);
 543                                 }
 544
 545                                 u16 indices[] = {0,1,2,2,3,0};
 546                                 // Add to mesh collector
 547                                 collector.append(tile, vertices, 4, indices, 6);
 548                         }
 549                 break;}
 550                 case NDT_ALLFACES:
 551                 {
 552                         TileSpec tile_leaves = getNodeTile(n, p,
 553                                         v3s16(0,0,0), data);
 554                         AtlasPointer pa_leaves = tile_leaves.texture;
 555
 556                         u16 l = getInteriorLight(n, 1, data);
 557                         video::SColor c = MapBlock_LightColor(255, l);
 558
 559                         v3f pos = intToFloat(p, BS);
 560                         aabb3f box(-BS/2,-BS/2,-BS/2,BS/2,BS/2,BS/2);
 561                         box.MinEdge += pos;
 562                         box.MaxEdge += pos;
 563                         makeCuboid(&collector, box, &tile_leaves, 1, c, NULL);
 564                 break;}
 565                 case NDT_ALLFACES_OPTIONAL:
 566                         // This is always pre-converted to something else
 567                         assert(0);
 568                         break;
 569                 case NDT_TORCHLIKE:
 570                 {
 571                         v3s16 dir = n.getWallMountedDir(nodedef);
 572
 573                         u8 tileindex = 0;
 574                         if(dir == v3s16(0,-1,0)){
 575                                 tileindex = 0; // floor
 576                         } else if(dir == v3s16(0,1,0)){
 577                                 tileindex = 1; // ceiling
 578                         // For backwards compatibility
 579                         } else if(dir == v3s16(0,0,0)){
 580                                 tileindex = 0; // floor
 581                         } else {
 582                                 tileindex = 2; // side
 583                         }
 584
 585                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
 586                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 587                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 588
 589                         AtlasPointer ap = tile.texture;
 590
 591                         video::SColor c(255,255,255,255);
 592
 593                         // Wall at X+ of node
 594                         video::S3DVertex vertices[4] =
 595                         {
 596                                 video::S3DVertex(-BS/2,-BS/2,0, 0,0,0, c,
 597                                                 ap.x0(), ap.y1()),
 598                                 video::S3DVertex(BS/2,-BS/2,0, 0,0,0, c,
 599                                                 ap.x1(), ap.y1()),
 600                                 video::S3DVertex(BS/2,BS/2,0, 0,0,0, c,
 601                                                 ap.x1(), ap.y0()),
 602                                 video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c,
 603                                                 ap.x0(), ap.y0()),
 604                         };
 605
 606                         for(s32 i=0; i<4; i++)
 607                         {
 608                                 if(dir == v3s16(1,0,0))
 609                                         vertices[i].Pos.rotateXZBy(0);
 610                                 if(dir == v3s16(-1,0,0))
 611                                         vertices[i].Pos.rotateXZBy(180);
 612                                 if(dir == v3s16(0,0,1))
 613                                         vertices[i].Pos.rotateXZBy(90);
 614                                 if(dir == v3s16(0,0,-1))
 615                                         vertices[i].Pos.rotateXZBy(-90);
 616                                 if(dir == v3s16(0,-1,0))
 617                                         vertices[i].Pos.rotateXZBy(45);
 618                                 if(dir == v3s16(0,1,0))
 619                                         vertices[i].Pos.rotateXZBy(-45);
 620
 621                                 vertices[i].Pos += intToFloat(p, BS);
 622                         }
 623
 624                         u16 indices[] = {0,1,2,2,3,0};
 625                         // Add to mesh collector
 626                         collector.append(tile, vertices, 4, indices, 6);
 627                 break;}
 628                 case NDT_SIGNLIKE:
 629                 {
 630                         TileSpec tile = getNodeTileN(n, p, 0, data);
 631                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 632                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 633                         AtlasPointer ap = tile.texture;
 634
 635                         u16 l = getInteriorLight(n, 0, data);
 636                         video::SColor c = MapBlock_LightColor(255, l);
 637
 638                         float d = (float)BS/16;
 639                         // Wall at X+ of node
 640                         video::S3DVertex vertices[4] =
 641                         {
 642                                 video::S3DVertex(BS/2-d,BS/2,BS/2, 0,0,0, c,
 643                                                 ap.x0(), ap.y0()),
 644                                 video::S3DVertex(BS/2-d,BS/2,-BS/2, 0,0,0, c,
 645                                                 ap.x1(), ap.y0()),
 646                                 video::S3DVertex(BS/2-d,-BS/2,-BS/2, 0,0,0, c,
 647                                                 ap.x1(), ap.y1()),
 648                                 video::S3DVertex(BS/2-d,-BS/2,BS/2, 0,0,0, c,
 649                                                 ap.x0(), ap.y1()),
 650                         };
 651
 652                         v3s16 dir = n.getWallMountedDir(nodedef);
 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.rotateXYBy(-90);
 666                                 if(dir == v3s16(0,1,0))
 667                                         vertices[i].Pos.rotateXYBy(90);
 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_PLANTLIKE:
 677                 {
 678                         TileSpec tile = getNodeTileN(n, p, 0, data);
 679                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 680                         AtlasPointer ap = tile.texture;
 681
 682                         u16 l = getInteriorLight(n, 1, data);
 683                         video::SColor c = MapBlock_LightColor(255, l);
 684
 685                         for(u32 j=0; j<4; j++)
 686                         {
 687                                 video::S3DVertex vertices[4] =
 688                                 {
 689                                         video::S3DVertex(-BS/2*f.visual_scale,-BS/2,0, 0,0,0, c,
 690                                                 ap.x0(), ap.y1()),
 691                                         video::S3DVertex( BS/2*f.visual_scale,-BS/2,0, 0,0,0, c,
 692                                                 ap.x1(), ap.y1()),
 693                                         video::S3DVertex( BS/2*f.visual_scale,
 694                                                 -BS/2 + f.visual_scale*BS,0, 0,0,0, c,
 695                                                 ap.x1(), ap.y0()),
 696                                         video::S3DVertex(-BS/2*f.visual_scale,
 697                                                 -BS/2 + f.visual_scale*BS,0, 0,0,0, c,
 698                                                 ap.x0(), ap.y0()),
 699                                 };
 700
 701                                 if(j == 0)
 702                                 {
 703                                         for(u16 i=0; i<4; i++)
 704                                                 vertices[i].Pos.rotateXZBy(45);
 705                                 }
 706                                 else if(j == 1)
 707                                 {
 708                                         for(u16 i=0; i<4; i++)
 709                                                 vertices[i].Pos.rotateXZBy(-45);
 710                                 }
 711                                 else if(j == 2)
 712                                 {
 713                                         for(u16 i=0; i<4; i++)
 714                                                 vertices[i].Pos.rotateXZBy(135);
 715                                 }
 716                                 else if(j == 3)
 717                                 {
 718                                         for(u16 i=0; i<4; i++)
 719                                                 vertices[i].Pos.rotateXZBy(-135);
 720                                 }
 721
 722                                 for(u16 i=0; i<4; i++)
 723                                 {
 724                                         vertices[i].Pos *= f.visual_scale;
 725                                         vertices[i].Pos += intToFloat(p, BS);
 726                                 }
 727
 728                                 u16 indices[] = {0,1,2,2,3,0};
 729                                 // Add to mesh collector
 730                                 collector.append(tile, vertices, 4, indices, 6);
 731                         }
 732                 break;}
 733                 case NDT_FENCELIKE:
 734                 {
 735                         TileSpec tile = getNodeTile(n, p, v3s16(0,0,0), data);
 736                         TileSpec tile_nocrack = tile;
 737                         tile_nocrack.material_flags &= ~MATERIAL_FLAG_CRACK;
 738
 739                         // A hack to put wood the right way around in the posts
 740                         ITextureSource *tsrc = data->m_gamedef->tsrc();
 741                         TileSpec tile_rot = tile;
 742                         tile_rot.texture = tsrc->getTexture(tsrc->getTextureName(
 743                                         tile.texture.id) + "^[transformR90");
 744
 745                         u16 l = getInteriorLight(n, 1, data);
 746                         video::SColor c = MapBlock_LightColor(255, l);
 747
 748                         const f32 post_rad=(f32)BS/8;
 749                         const f32 bar_rad=(f32)BS/16;
 750                         const f32 bar_len=(f32)(BS/2)-post_rad;
 751
 752                         v3f pos = intToFloat(p, BS);
 753
 754                         // The post - always present
 755                         aabb3f post(-post_rad,-BS/2,-post_rad,post_rad,BS/2,post_rad);
 756                         post.MinEdge += pos;
 757                         post.MaxEdge += pos;
 758                         f32 postuv[24]={
 759                                         6/16.,6/16.,10/16.,10/16.,
 760                                         6/16.,6/16.,10/16.,10/16.,
 761                                         0/16.,0,4/16.,1,
 762                                         4/16.,0,8/16.,1,
 763                                         8/16.,0,12/16.,1,
 764                                         12/16.,0,16/16.,1};
 765                         makeCuboid(&collector, post, &tile_rot, 1, c, postuv);
 766
 767                         // Now a section of fence, +X, if there's a post there
 768                         v3s16 p2 = p;
 769                         p2.X++;
 770                         MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 771                         const ContentFeatures *f2 = &nodedef->get(n2);
 772                         if(f2->drawtype == NDT_FENCELIKE)
 773                         {
 774                                 aabb3f bar(-bar_len+BS/2,-bar_rad+BS/4,-bar_rad,
 775                                                 bar_len+BS/2,bar_rad+BS/4,bar_rad);
 776                                 bar.MinEdge += pos;
 777                                 bar.MaxEdge += pos;
 778                                 f32 xrailuv[24]={
 779                                         0/16.,2/16.,16/16.,4/16.,
 780                                         0/16.,4/16.,16/16.,6/16.,
 781                                         6/16.,6/16.,8/16.,8/16.,
 782                                         10/16.,10/16.,12/16.,12/16.,
 783                                         0/16.,8/16.,16/16.,10/16.,
 784                                         0/16.,14/16.,16/16.,16/16.};
 785                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 786                                                 c, xrailuv);
 787                                 bar.MinEdge.Y -= BS/2;
 788                                 bar.MaxEdge.Y -= BS/2;
 789                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 790                                                 c, xrailuv);
 791                         }
 792
 793                         // Now a section of fence, +Z, if there's a post there
 794                         p2 = p;
 795                         p2.Z++;
 796                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 797                         f2 = &nodedef->get(n2);
 798                         if(f2->drawtype == NDT_FENCELIKE)
 799                         {
 800                                 aabb3f bar(-bar_rad,-bar_rad+BS/4,-bar_len+BS/2,
 801                                                 bar_rad,bar_rad+BS/4,bar_len+BS/2);
 802                                 bar.MinEdge += pos;
 803                                 bar.MaxEdge += pos;
 804                                 f32 zrailuv[24]={
 805                                         3/16.,1/16.,5/16.,5/16., // cannot rotate; stretch
 806                                         4/16.,1/16.,6/16.,5/16., // for wood texture instead
 807                                         0/16.,9/16.,16/16.,11/16.,
 808                                         0/16.,6/16.,16/16.,8/16.,
 809                                         6/16.,6/16.,8/16.,8/16.,
 810                                         10/16.,10/16.,12/16.,12/16.};
 811                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 812                                                 c, zrailuv);
 813                                 bar.MinEdge.Y -= BS/2;
 814                                 bar.MaxEdge.Y -= BS/2;
 815                                 makeCuboid(&collector, bar, &tile_nocrack, 1,
 816                                                 c, zrailuv);
 817                         }
 818                 break;}
 819                 case NDT_RAILLIKE:
 820                 {
 821                         bool is_rail_x [] = { false, false };  /* x-1, x+1 */
 822                         bool is_rail_z [] = { false, false };  /* z-1, z+1 */
 823
 824                         bool is_rail_z_minus_y [] = { false, false };  /* z-1, z+1; y-1 */
 825                         bool is_rail_x_minus_y [] = { false, false };  /* x-1, z+1; y-1 */
 826                         bool is_rail_z_plus_y [] = { false, false };  /* z-1, z+1; y+1 */
 827                         bool is_rail_x_plus_y [] = { false, false };  /* x-1, x+1; y+1 */
 828
 829                         MapNode n_minus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1,y,z));
 830                         MapNode n_plus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1,y,z));
 831                         MapNode n_minus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z-1));
 832                         MapNode n_plus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z+1));
 833                         MapNode n_plus_x_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1, y+1, z));
 834                         MapNode n_plus_x_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1, y-1, z));
 835                         MapNode n_minus_x_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1, y+1, z));
 836                         MapNode n_minus_x_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1, y-1, z));
 837                         MapNode n_plus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z+1));
 838                         MapNode n_minus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z-1));
 839                         MapNode n_plus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z+1));
 840                         MapNode n_minus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z-1));
 841
 842                         content_t thiscontent = n.getContent();
 843                         if(n_minus_x.getContent() == thiscontent)
 844                                 is_rail_x[0] = true;
 845                         if (n_minus_x_minus_y.getContent() == thiscontent)
 846                                 is_rail_x_minus_y[0] = true;
 847                         if(n_minus_x_plus_y.getContent() == thiscontent)
 848                                 is_rail_x_plus_y[0] = true;
 849
 850                         if(n_plus_x.getContent() == thiscontent)
 851                                 is_rail_x[1] = true;
 852                         if (n_plus_x_minus_y.getContent() == thiscontent)
 853                                 is_rail_x_minus_y[1] = true;
 854                         if(n_plus_x_plus_y.getContent() == thiscontent)
 855                                 is_rail_x_plus_y[1] = true;
 856
 857                         if(n_minus_z.getContent() == thiscontent)
 858                                 is_rail_z[0] = true;
 859                         if (n_minus_z_minus_y.getContent() == thiscontent)
 860                                 is_rail_z_minus_y[0] = true;
 861                         if(n_minus_z_plus_y.getContent() == thiscontent)
 862                                 is_rail_z_plus_y[0] = true;
 863
 864                         if(n_plus_z.getContent() == thiscontent)
 865                                 is_rail_z[1] = true;
 866                         if (n_plus_z_minus_y.getContent() == thiscontent)
 867                                 is_rail_z_minus_y[1] = true;
 868                         if(n_plus_z_plus_y.getContent() == thiscontent)
 869                                 is_rail_z_plus_y[1] = true;
 870
 871
 872                         bool is_rail_x_all[] = {false, false};
 873                         bool is_rail_z_all[] = {false, false};
 874                         is_rail_x_all[0]=is_rail_x[0] || is_rail_x_minus_y[0] || is_rail_x_plus_y[0];
 875                         is_rail_x_all[1]=is_rail_x[1] || is_rail_x_minus_y[1] || is_rail_x_plus_y[1];
 876                         is_rail_z_all[0]=is_rail_z[0] || is_rail_z_minus_y[0] || is_rail_z_plus_y[0];
 877                         is_rail_z_all[1]=is_rail_z[1] || is_rail_z_minus_y[1] || is_rail_z_plus_y[1];
 878
 879                         bool is_straight = (is_rail_x_all[0] && is_rail_x_all[1]) || (is_rail_z_all[0] && is_rail_z_all[1]);//is really straight, rails on both sides
 880                         int adjacencies = is_rail_x_all[0] + is_rail_x_all[1] + is_rail_z_all[0] + is_rail_z_all[1];
 881
 882                         if (is_rail_x_plus_y[0] || is_rail_x_plus_y[1] || is_rail_z_plus_y[0] || is_rail_z_plus_y[1]) //is straight because sloped
 883                         {
 884                                 adjacencies = 5; //5 means sloped
 885                                 is_straight = true;
 886                         }
 887
 888                         // Assign textures
 889                         u8 tileindex = 0; // straight
 890                         if(adjacencies < 2)
 891                                 tileindex = 0; // straight
 892                         else if(adjacencies == 2)
 893                         {
 894                                 if(is_straight)
 895                                         tileindex = 0; // straight
 896                                 else
 897                                         tileindex = 1; // curved
 898                         }
 899                         else if(adjacencies == 3)
 900                                 tileindex = 2; // t-junction
 901                         else if(adjacencies == 4)
 902                                 tileindex = 3; // crossing
 903
 904                         TileSpec tile = getNodeTileN(n, p, tileindex, data);
 905                         tile.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 906                         tile.material_flags |= MATERIAL_FLAG_CRACK_OVERLAY;
 907
 908                         AtlasPointer ap = tile.texture;
 909
 910                         u16 l = getInteriorLight(n, 0, data);
 911                         video::SColor c = MapBlock_LightColor(255, l);
 912
 913                         float d = (float)BS/64;
 914
 915                         char g=-1;
 916                         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])
 917                                 g=1; //Object is at a slope
 918
 919                         video::S3DVertex vertices[4] =
 920                         {
 921                                         video::S3DVertex(-BS/2,-BS/2+d,-BS/2, 0,0,0, c,
 922                                                         ap.x0(), ap.y1()),
 923                                         video::S3DVertex(BS/2,-BS/2+d,-BS/2, 0,0,0, c,
 924                                                         ap.x1(), ap.y1()),
 925                                         video::S3DVertex(BS/2,g*BS/2+d,BS/2, 0,0,0, c,
 926                                                         ap.x1(), ap.y0()),
 927                                         video::S3DVertex(-BS/2,g*BS/2+d,BS/2, 0,0,0, c,
 928                                                         ap.x0(), ap.y0()),
 929                         };
 930
 931
 932                         // Rotate textures
 933                         int angle = 0;
 934
 935                         if(adjacencies == 1)
 936                         {
 937                                 if(is_rail_x_all[0] || is_rail_x_all[1])
 938                                         angle = 90;
 939                         }
 940                         if(adjacencies == 2)
 941                         {
 942                                 if(is_rail_x_all[0] && is_rail_x_all[1])
 943                                 {
 944                                         angle = 90;
 945                                 }
 946                                 if(is_rail_z_all[0] && is_rail_z_all[1])
 947                                 {
 948                                         if (n_minus_z_plus_y.getContent() == thiscontent) angle = 180;
 949                                 }
 950                                 else if(is_rail_x_all[0] && is_rail_z_all[0])
 951                                         angle = 270;
 952                                 else if(is_rail_x_all[0] && is_rail_z_all[1])
 953                                         angle = 180;
 954                                 else if(is_rail_x_all[1] && is_rail_z_all[1])
 955                                         angle = 90;
 956                         }
 957                         if(adjacencies == 3)
 958                         {
 959                                 if(!is_rail_x_all[0])
 960                                         angle=0;
 961                                 if(!is_rail_x_all[1])
 962                                         angle=180;
 963                                 if(!is_rail_z_all[0])
 964                                         angle=90;
 965                                 if(!is_rail_z_all[1])
 966                                         angle=270;
 967                         }
 968                         //adjacencies 4: Crossing
 969                         if(adjacencies == 5) //sloped
 970                         {
 971                                 if(is_rail_z_plus_y[0])
 972                                         angle = 180;
 973                                 if(is_rail_x_plus_y[0])
 974                                         angle = 90;
 975                                 if(is_rail_x_plus_y[1])
 976                                         angle = -90;
 977                         }
 978
 979                         if(angle != 0) {
 980                                 for(u16 i=0; i<4; i++)
 981                                         vertices[i].Pos.rotateXZBy(angle);
 982                         }
 983
 984                         for(s32 i=0; i<4; i++)
 985                         {
 986                                 vertices[i].Pos += intToFloat(p, BS);
 987                         }
 988
 989                         u16 indices[] = {0,1,2,2,3,0};
 990                         collector.append(tile, vertices, 4, indices, 6);
 991                 break;}
 992                 }
 993         }
 994 }
 995