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 #include "content_mapnode.h"
  22 #include "main.h" // For g_settings and g_texturesource
  23 #include "mineral.h"
  24 #include "mapblock_mesh.h" // For MapBlock_LightColor()
  25
  26 #ifndef SERVER
  27 // Create a cuboid.
  28 //  material  - the material to use (for all 6 faces)
  29 //  collector - the MeshCollector for the resulting polygons
  30 //  pa        - texture atlas pointer for the material
  31 //  c         - vertex colour - used for all
  32 //  pos       - the position of the centre of the cuboid
  33 //  rz,ry,rz  - the radius of the cuboid in each dimension
  34 //  txc       - texture coordinates - this is a list of texture coordinates
  35 //              for the opposite corners of each face - therefore, there
  36 //              should be (2+2)*6=24 values in the list. Alternatively, pass
  37 //              NULL to use the entire texture for each face. The order of
  38 //              the faces in the list is top-backi-right-front-left-bottom
  39 //              If you specified 0,0,1,1 for each face, that would be the
  40 //              same as passing NULL.
  41 void makeCuboid(video::SMaterial &material, MeshCollector *collector,
  42         AtlasPointer* pa, video::SColor &c,
  43         v3f &pos, f32 rx, f32 ry, f32 rz, f32* txc)
  44 {
  45         f32 tu0=pa->x0();
  46         f32 tu1=pa->x1();
  47         f32 tv0=pa->y0();
  48         f32 tv1=pa->y1();
  49         f32 txus=tu1-tu0;
  50         f32 txvs=tv1-tv0;
  51
  52         video::S3DVertex v[4] =
  53         {
  54                 video::S3DVertex(0,0,0, 0,0,0, c, tu0, tv1),
  55                 video::S3DVertex(0,0,0, 0,0,0, c, tu1, tv1),
  56                 video::S3DVertex(0,0,0, 0,0,0, c, tu1, tv0),
  57                 video::S3DVertex(0,0,0, 0,0,0, c, tu0, tv0)
  58         };
  59
  60         for(int i=0;i<6;i++)
  61         {
  62                 switch(i)
  63                 {
  64                         case 0: // top
  65                                 v[0].Pos.X=-rx; v[0].Pos.Y= ry; v[0].Pos.Z=-rz;
  66                                 v[1].Pos.X=-rx; v[1].Pos.Y= ry; v[1].Pos.Z= rz;
  67                                 v[2].Pos.X= rx; v[2].Pos.Y= ry; v[2].Pos.Z= rz;
  68                                 v[3].Pos.X= rx; v[3].Pos.Y= ry, v[3].Pos.Z=-rz;
  69                                 break;
  70                         case 1: // back
  71                                 v[0].Pos.X=-rx; v[0].Pos.Y= ry; v[0].Pos.Z=-rz;
  72                                 v[1].Pos.X= rx; v[1].Pos.Y= ry; v[1].Pos.Z=-rz;
  73                                 v[2].Pos.X= rx; v[2].Pos.Y=-ry; v[2].Pos.Z=-rz;
  74                                 v[3].Pos.X=-rx; v[3].Pos.Y=-ry, v[3].Pos.Z=-rz;
  75                                 break;
  76                         case 2: //right
  77                                 v[0].Pos.X= rx; v[0].Pos.Y= ry; v[0].Pos.Z=-rz;
  78                                 v[1].Pos.X= rx; v[1].Pos.Y= ry; v[1].Pos.Z= rz;
  79                                 v[2].Pos.X= rx; v[2].Pos.Y=-ry; v[2].Pos.Z= rz;
  80                                 v[3].Pos.X= rx; v[3].Pos.Y=-ry, v[3].Pos.Z=-rz;
  81                                 break;
  82                         case 3: // front
  83                                 v[0].Pos.X= rx; v[0].Pos.Y= ry; v[0].Pos.Z= rz;
  84                                 v[1].Pos.X=-rx; v[1].Pos.Y= ry; v[1].Pos.Z= rz;
  85                                 v[2].Pos.X=-rx; v[2].Pos.Y=-ry; v[2].Pos.Z= rz;
  86                                 v[3].Pos.X= rx; v[3].Pos.Y=-ry, v[3].Pos.Z= rz;
  87                                 break;
  88                         case 4: // left
  89                                 v[0].Pos.X=-rx; v[0].Pos.Y= ry; v[0].Pos.Z= rz;
  90                                 v[1].Pos.X=-rx; v[1].Pos.Y= ry; v[1].Pos.Z=-rz;
  91                                 v[2].Pos.X=-rx; v[2].Pos.Y=-ry; v[2].Pos.Z=-rz;
  92                                 v[3].Pos.X=-rx; v[3].Pos.Y=-ry, v[3].Pos.Z= rz;
  93                                 break;
  94                         case 5: // bottom
  95                                 v[0].Pos.X= rx; v[0].Pos.Y=-ry; v[0].Pos.Z= rz;
  96                                 v[1].Pos.X=-rx; v[1].Pos.Y=-ry; v[1].Pos.Z= rz;
  97                                 v[2].Pos.X=-rx; v[2].Pos.Y=-ry; v[2].Pos.Z=-rz;
  98                                 v[3].Pos.X= rx; v[3].Pos.Y=-ry, v[3].Pos.Z=-rz;
  99                                 break;
 100                 }
 101
 102                 if(txc!=NULL)
 103                 {
 104                         v[0].TCoords.X=tu0+txus*txc[0]; v[0].TCoords.Y=tv0+txvs*txc[3];
 105                         v[1].TCoords.X=tu0+txus*txc[2]; v[1].TCoords.Y=tv0+txvs*txc[3];
 106                         v[2].TCoords.X=tu0+txus*txc[2]; v[2].TCoords.Y=tv0+txvs*txc[1];
 107                         v[3].TCoords.X=tu0+txus*txc[0]; v[3].TCoords.Y=tv0+txvs*txc[1];
 108                         txc+=4;
 109                 }
 110
 111                 for(u16 i=0; i<4; i++)
 112                         v[i].Pos += pos;
 113                 u16 indices[] = {0,1,2,2,3,0};
 114                 collector->append(material, v, 4, indices, 6);
 115
 116         }
 117
 118 }
 119 #endif
 120
 121 #ifndef SERVER
 122 void mapblock_mesh_generate_special(MeshMakeData *data,
 123                 MeshCollector &collector)
 124 {
 125         // 0ms
 126         //TimeTaker timer("mapblock_mesh_generate_special()");
 127
 128         /*
 129                 Some settings
 130         */
 131         bool new_style_water = g_settings.getBool("new_style_water");
 132         bool new_style_leaves = g_settings.getBool("new_style_leaves");
 133         //bool smooth_lighting = g_settings.getBool("smooth_lighting");
 134         bool invisible_stone = g_settings.getBool("invisible_stone");
 135
 136         float node_liquid_level = 1.0;
 137         if(new_style_water)
 138                 node_liquid_level = 0.85;
 139
 140         v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;
 141
 142         // New-style leaves material
 143         video::SMaterial material_leaves1;
 144         material_leaves1.setFlag(video::EMF_LIGHTING, false);
 145         //material_leaves1.setFlag(video::EMF_BACK_FACE_CULLING, false);
 146         material_leaves1.setFlag(video::EMF_BILINEAR_FILTER, false);
 147         material_leaves1.setFlag(video::EMF_FOG_ENABLE, true);
 148         material_leaves1.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 149         AtlasPointer pa_leaves1 = g_texturesource->getTexture(
 150                         g_texturesource->getTextureId("leaves.png"));
 151         material_leaves1.setTexture(0, pa_leaves1.atlas);
 152
 153         // Glass material
 154         video::SMaterial material_glass;
 155         material_glass.setFlag(video::EMF_LIGHTING, false);
 156         material_glass.setFlag(video::EMF_BILINEAR_FILTER, false);
 157         material_glass.setFlag(video::EMF_FOG_ENABLE, true);
 158         material_glass.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 159         AtlasPointer pa_glass = g_texturesource->getTexture(
 160                         g_texturesource->getTextureId("glass.png"));
 161         material_glass.setTexture(0, pa_glass.atlas);
 162
 163         // Wood material
 164         video::SMaterial material_wood;
 165         material_wood.setFlag(video::EMF_LIGHTING, false);
 166         material_wood.setFlag(video::EMF_BILINEAR_FILTER, false);
 167         material_wood.setFlag(video::EMF_FOG_ENABLE, true);
 168         material_wood.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 169         AtlasPointer pa_wood = g_texturesource->getTexture(
 170                         g_texturesource->getTextureId("wood.png"));
 171         material_wood.setTexture(0, pa_wood.atlas);
 172
 173         // General ground material for special output
 174         // Texture is modified just before usage
 175         video::SMaterial material_general;
 176         material_general.setFlag(video::EMF_LIGHTING, false);
 177         material_general.setFlag(video::EMF_BILINEAR_FILTER, false);
 178         material_general.setFlag(video::EMF_FOG_ENABLE, true);
 179         material_general.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 180
 181
 182         // Papyrus material
 183         video::SMaterial material_papyrus;
 184         material_papyrus.setFlag(video::EMF_LIGHTING, false);
 185         material_papyrus.setFlag(video::EMF_BILINEAR_FILTER, false);
 186         material_papyrus.setFlag(video::EMF_FOG_ENABLE, true);
 187         material_papyrus.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 188         AtlasPointer pa_papyrus = g_texturesource->getTexture(
 189                         g_texturesource->getTextureId("papyrus.png"));
 190         material_papyrus.setTexture(0, pa_papyrus.atlas);
 191
 192         // junglegrass material
 193         video::SMaterial material_junglegrass;
 194         material_junglegrass.setFlag(video::EMF_LIGHTING, false);
 195         material_junglegrass.setFlag(video::EMF_BILINEAR_FILTER, false);
 196         material_junglegrass.setFlag(video::EMF_FOG_ENABLE, true);
 197         material_junglegrass.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 198         AtlasPointer pa_junglegrass = g_texturesource->getTexture(
 199                         g_texturesource->getTextureId("junglegrass.png"));
 200         material_junglegrass.setTexture(0, pa_junglegrass.atlas);
 201
 202         for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 203         for(s16 y=0; y<MAP_BLOCKSIZE; y++)
 204         for(s16 x=0; x<MAP_BLOCKSIZE; x++)
 205         {
 206                 v3s16 p(x,y,z);
 207
 208                 MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes+p);
 209
 210                 /*
 211                         Add torches to mesh
 212                 */
 213                 if(n.getContent() == CONTENT_TORCH)
 214                 {
 215                         video::SColor c(255,255,255,255);
 216
 217                         // Wall at X+ of node
 218                         video::S3DVertex vertices[4] =
 219                         {
 220                                 video::S3DVertex(-BS/2,-BS/2,0, 0,0,0, c, 0,1),
 221                                 video::S3DVertex(BS/2,-BS/2,0, 0,0,0, c, 1,1),
 222                                 video::S3DVertex(BS/2,BS/2,0, 0,0,0, c, 1,0),
 223                                 video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c, 0,0),
 224                         };
 225
 226                         v3s16 dir = unpackDir(n.param2);
 227
 228                         for(s32 i=0; i<4; i++)
 229                         {
 230                                 if(dir == v3s16(1,0,0))
 231                                         vertices[i].Pos.rotateXZBy(0);
 232                                 if(dir == v3s16(-1,0,0))
 233                                         vertices[i].Pos.rotateXZBy(180);
 234                                 if(dir == v3s16(0,0,1))
 235                                         vertices[i].Pos.rotateXZBy(90);
 236                                 if(dir == v3s16(0,0,-1))
 237                                         vertices[i].Pos.rotateXZBy(-90);
 238                                 if(dir == v3s16(0,-1,0))
 239                                         vertices[i].Pos.rotateXZBy(45);
 240                                 if(dir == v3s16(0,1,0))
 241                                         vertices[i].Pos.rotateXZBy(-45);
 242
 243                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 244                         }
 245
 246                         // Set material
 247                         video::SMaterial material;
 248                         material.setFlag(video::EMF_LIGHTING, false);
 249                         material.setFlag(video::EMF_BACK_FACE_CULLING, false);
 250                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 251                         //material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 252                         material.MaterialType
 253                                         = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 254
 255                         if(dir == v3s16(0,-1,0))
 256                                 material.setTexture(0,
 257                                                 g_texturesource->getTextureRaw("torch_on_floor.png"));
 258                         else if(dir == v3s16(0,1,0))
 259                                 material.setTexture(0,
 260                                                 g_texturesource->getTextureRaw("torch_on_ceiling.png"));
 261                         // For backwards compatibility
 262                         else if(dir == v3s16(0,0,0))
 263                                 material.setTexture(0,
 264                                                 g_texturesource->getTextureRaw("torch_on_floor.png"));
 265                         else
 266                                 material.setTexture(0,
 267                                                 g_texturesource->getTextureRaw("torch.png"));
 268
 269                         u16 indices[] = {0,1,2,2,3,0};
 270                         // Add to mesh collector
 271                         collector.append(material, vertices, 4, indices, 6);
 272                 }
 273                 /*
 274                         Signs on walls
 275                 */
 276                 else if(n.getContent() == CONTENT_SIGN_WALL)
 277                 {
 278                         u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));
 279                         video::SColor c = MapBlock_LightColor(255, l);
 280
 281                         float d = (float)BS/16;
 282                         // Wall at X+ of node
 283                         video::S3DVertex vertices[4] =
 284                         {
 285                                 video::S3DVertex(BS/2-d,-BS/2,-BS/2, 0,0,0, c, 0,1),
 286                                 video::S3DVertex(BS/2-d,-BS/2,BS/2, 0,0,0, c, 1,1),
 287                                 video::S3DVertex(BS/2-d,BS/2,BS/2, 0,0,0, c, 1,0),
 288                                 video::S3DVertex(BS/2-d,BS/2,-BS/2, 0,0,0, c, 0,0),
 289                         };
 290
 291                         v3s16 dir = unpackDir(n.param2);
 292
 293                         for(s32 i=0; i<4; i++)
 294                         {
 295                                 if(dir == v3s16(1,0,0))
 296                                         vertices[i].Pos.rotateXZBy(0);
 297                                 if(dir == v3s16(-1,0,0))
 298                                         vertices[i].Pos.rotateXZBy(180);
 299                                 if(dir == v3s16(0,0,1))
 300                                         vertices[i].Pos.rotateXZBy(90);
 301                                 if(dir == v3s16(0,0,-1))
 302                                         vertices[i].Pos.rotateXZBy(-90);
 303                                 if(dir == v3s16(0,-1,0))
 304                                         vertices[i].Pos.rotateXYBy(-90);
 305                                 if(dir == v3s16(0,1,0))
 306                                         vertices[i].Pos.rotateXYBy(90);
 307
 308                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 309                         }
 310
 311                         // Set material
 312                         video::SMaterial material;
 313                         material.setFlag(video::EMF_LIGHTING, false);
 314                         material.setFlag(video::EMF_BACK_FACE_CULLING, false);
 315                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 316                         material.setFlag(video::EMF_FOG_ENABLE, true);
 317                         //material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 318                         material.MaterialType
 319                                         = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 320
 321                         material.setTexture(0,
 322                                         g_texturesource->getTextureRaw("sign_wall.png"));
 323
 324                         u16 indices[] = {0,1,2,2,3,0};
 325                         // Add to mesh collector
 326                         collector.append(material, vertices, 4, indices, 6);
 327                 }
 328                 /*
 329                         Add flowing liquid to mesh
 330                 */
 331                 else if(content_features(n).liquid_type == LIQUID_FLOWING)
 332                 {
 333                         assert(content_features(n).special_material);
 334                         video::SMaterial &liquid_material =
 335                                         *content_features(n).special_material;
 336                         assert(content_features(n).special_atlas);
 337                         AtlasPointer &pa_liquid1 =
 338                                         *content_features(n).special_atlas;
 339
 340                         bool top_is_same_liquid = false;
 341                         MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 342                         content_t c_flowing = content_features(n).liquid_alternative_flowing;
 343                         content_t c_source = content_features(n).liquid_alternative_source;
 344                         if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
 345                                 top_is_same_liquid = true;
 346
 347                         u8 l = 0;
 348                         // Use the light of the node on top if possible
 349                         if(content_features(ntop).param_type == CPT_LIGHT)
 350                                 l = decode_light(ntop.getLightBlend(data->m_daynight_ratio));
 351                         // Otherwise use the light of this node (the liquid)
 352                         else
 353                                 l = decode_light(n.getLightBlend(data->m_daynight_ratio));
 354                         video::SColor c = MapBlock_LightColor(
 355                                         content_features(n).vertex_alpha, l);
 356
 357                         // Neighbor liquid levels (key = relative position)
 358                         // Includes current node
 359                         core::map<v3s16, f32> neighbor_levels;
 360                         core::map<v3s16, content_t> neighbor_contents;
 361                         core::map<v3s16, u8> neighbor_flags;
 362                         const u8 neighborflag_top_is_same_liquid = 0x01;
 363                         v3s16 neighbor_dirs[9] = {
 364                                 v3s16(0,0,0),
 365                                 v3s16(0,0,1),
 366                                 v3s16(0,0,-1),
 367                                 v3s16(1,0,0),
 368                                 v3s16(-1,0,0),
 369                                 v3s16(1,0,1),
 370                                 v3s16(-1,0,-1),
 371                                 v3s16(1,0,-1),
 372                                 v3s16(-1,0,1),
 373                         };
 374                         for(u32 i=0; i<9; i++)
 375                         {
 376                                 u8 content = CONTENT_AIR;
 377                                 float level = -0.5 * BS;
 378                                 u8 flags = 0;
 379                                 // Check neighbor
 380                                 v3s16 p2 = p + neighbor_dirs[i];
 381                                 MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 382                                 if(n2.getContent() != CONTENT_IGNORE)
 383                                 {
 384                                         content = n2.getContent();
 385
 386                                         if(n2.getContent() == c_source)
 387                                                 level = (-0.5+node_liquid_level) * BS;
 388                                         else if(n2.getContent() == c_flowing)
 389                                                 level = (-0.5 + ((float)(n2.param2&LIQUID_LEVEL_MASK)
 390                                                                 + 0.5) / 8.0 * node_liquid_level) * BS;
 391
 392                                         // Check node above neighbor.
 393                                         // NOTE: This doesn't get executed if neighbor
 394                                         //       doesn't exist
 395                                         p2.Y += 1;
 396                                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 397                                         if(n2.getContent() == c_source ||
 398                                                         n2.getContent() == c_flowing)
 399                                                 flags |= neighborflag_top_is_same_liquid;
 400                                 }
 401
 402                                 neighbor_levels.insert(neighbor_dirs[i], level);
 403                                 neighbor_contents.insert(neighbor_dirs[i], content);
 404                                 neighbor_flags.insert(neighbor_dirs[i], flags);
 405                         }
 406
 407                         // Corner heights (average between four liquids)
 408                         f32 corner_levels[4];
 409
 410                         v3s16 halfdirs[4] = {
 411                                 v3s16(0,0,0),
 412                                 v3s16(1,0,0),
 413                                 v3s16(1,0,1),
 414                                 v3s16(0,0,1),
 415                         };
 416                         for(u32 i=0; i<4; i++)
 417                         {
 418                                 v3s16 cornerdir = halfdirs[i];
 419                                 float cornerlevel = 0;
 420                                 u32 valid_count = 0;
 421                                 u32 air_count = 0;
 422                                 for(u32 j=0; j<4; j++)
 423                                 {
 424                                         v3s16 neighbordir = cornerdir - halfdirs[j];
 425                                         u8 content = neighbor_contents[neighbordir];
 426                                         // If top is liquid, draw starting from top of node
 427                                         if(neighbor_flags[neighbordir] &
 428                                                         neighborflag_top_is_same_liquid)
 429                                         {
 430                                                 cornerlevel = 0.5*BS;
 431                                                 valid_count = 1;
 432                                                 break;
 433                                         }
 434                                         // Source is always the same height
 435                                         else if(content == c_source)
 436                                         {
 437                                                 cornerlevel = (-0.5+node_liquid_level)*BS;
 438                                                 valid_count = 1;
 439                                                 break;
 440                                         }
 441                                         // Flowing liquid has level information
 442                                         else if(content == c_flowing)
 443                                         {
 444                                                 cornerlevel += neighbor_levels[neighbordir];
 445                                                 valid_count++;
 446                                         }
 447                                         else if(content == CONTENT_AIR)
 448                                         {
 449                                                 air_count++;
 450                                         }
 451                                         /*// Air is liquid level 0
 452                                         else if(content == CONTENT_AIR)
 453                                         {
 454                                                 cornerlevel += -0.5*BS;
 455                                                 valid_count++;
 456                                         }*/
 457                                 }
 458                                 if(air_count >= 2)
 459                                         cornerlevel = -0.5*BS;
 460                                 else if(valid_count > 0)
 461                                         cornerlevel /= valid_count;
 462                                 corner_levels[i] = cornerlevel;
 463                         }
 464
 465                         /*
 466                                 Generate sides
 467                         */
 468
 469                         v3s16 side_dirs[4] = {
 470                                 v3s16(1,0,0),
 471                                 v3s16(-1,0,0),
 472                                 v3s16(0,0,1),
 473                                 v3s16(0,0,-1),
 474                         };
 475                         s16 side_corners[4][2] = {
 476                                 {1, 2},
 477                                 {3, 0},
 478                                 {2, 3},
 479                                 {0, 1},
 480                         };
 481                         for(u32 i=0; i<4; i++)
 482                         {
 483                                 v3s16 dir = side_dirs[i];
 484
 485                                 /*
 486                                         If our topside is liquid and neighbor's topside
 487                                         is liquid, don't draw side face
 488                                 */
 489                                 if(top_is_same_liquid &&
 490                                                 neighbor_flags[dir] & neighborflag_top_is_same_liquid)
 491                                         continue;
 492
 493                                 u8 neighbor_content = neighbor_contents[dir];
 494
 495                                 // Don't draw face if neighbor is not air or liquid
 496                                 if(neighbor_content != CONTENT_AIR
 497                                                 && neighbor_content != c_source)
 498                                         continue;
 499
 500                                 bool neighbor_is_liquid = (neighbor_content == c_source);
 501
 502                                 // Don't draw any faces if neighbor is liquid and top is liquid
 503                                 if(neighbor_is_liquid == true && top_is_same_liquid == false)
 504                                         continue;
 505
 506                                 video::S3DVertex vertices[4] =
 507                                 {
 508                                         /*video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
 509                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,1),
 510                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
 511                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),*/
 512                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 513                                                         pa_liquid1.x0(), pa_liquid1.y1()),
 514                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 515                                                         pa_liquid1.x1(), pa_liquid1.y1()),
 516                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 517                                                         pa_liquid1.x1(), pa_liquid1.y0()),
 518                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 519                                                         pa_liquid1.x0(), pa_liquid1.y0()),
 520                                 };
 521
 522                                 /*
 523                                         If our topside is liquid, set upper border of face
 524                                         at upper border of node
 525                                 */
 526                                 if(top_is_same_liquid)
 527                                 {
 528                                         vertices[2].Pos.Y = 0.5*BS;
 529                                         vertices[3].Pos.Y = 0.5*BS;
 530                                 }
 531                                 /*
 532                                         Otherwise upper position of face is corner levels
 533                                 */
 534                                 else
 535                                 {
 536                                         vertices[2].Pos.Y = corner_levels[side_corners[i][0]];
 537                                         vertices[3].Pos.Y = corner_levels[side_corners[i][1]];
 538                                 }
 539
 540                                 /*
 541                                         If neighbor is liquid, lower border of face is corner
 542                                         liquid levels
 543                                 */
 544                                 if(neighbor_is_liquid)
 545                                 {
 546                                         vertices[0].Pos.Y = corner_levels[side_corners[i][1]];
 547                                         vertices[1].Pos.Y = corner_levels[side_corners[i][0]];
 548                                 }
 549                                 /*
 550                                         If neighbor is not liquid, lower border of face is
 551                                         lower border of node
 552                                 */
 553                                 else
 554                                 {
 555                                         vertices[0].Pos.Y = -0.5*BS;
 556                                         vertices[1].Pos.Y = -0.5*BS;
 557                                 }
 558
 559                                 for(s32 j=0; j<4; j++)
 560                                 {
 561                                         if(dir == v3s16(0,0,1))
 562                                                 vertices[j].Pos.rotateXZBy(0);
 563                                         if(dir == v3s16(0,0,-1))
 564                                                 vertices[j].Pos.rotateXZBy(180);
 565                                         if(dir == v3s16(-1,0,0))
 566                                                 vertices[j].Pos.rotateXZBy(90);
 567                                         if(dir == v3s16(1,0,-0))
 568                                                 vertices[j].Pos.rotateXZBy(-90);
 569
 570                                         vertices[j].Pos += intToFloat(p + blockpos_nodes, BS);
 571                                 }
 572
 573                                 u16 indices[] = {0,1,2,2,3,0};
 574                                 // Add to mesh collector
 575                                 collector.append(liquid_material, vertices, 4, indices, 6);
 576                         }
 577
 578                         /*
 579                                 Generate top side, if appropriate
 580                         */
 581
 582                         if(top_is_same_liquid == false)
 583                         {
 584                                 video::S3DVertex vertices[4] =
 585                                 {
 586                                         /*video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,1),
 587                                         video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c, 1,1),
 588                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
 589                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),*/
 590                                         video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 591                                                         pa_liquid1.x0(), pa_liquid1.y1()),
 592                                         video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 593                                                         pa_liquid1.x1(), pa_liquid1.y1()),
 594                                         video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 595                                                         pa_liquid1.x1(), pa_liquid1.y0()),
 596                                         video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 597                                                         pa_liquid1.x0(), pa_liquid1.y0()),
 598                                 };
 599
 600                                 // This fixes a strange bug
 601                                 s32 corner_resolve[4] = {3,2,1,0};
 602
 603                                 for(s32 i=0; i<4; i++)
 604                                 {
 605                                         //vertices[i].Pos.Y += liquid_level;
 606                                         //vertices[i].Pos.Y += neighbor_levels[v3s16(0,0,0)];
 607                                         s32 j = corner_resolve[i];
 608                                         vertices[i].Pos.Y += corner_levels[j];
 609                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 610                                 }
 611
 612                                 u16 indices[] = {0,1,2,2,3,0};
 613                                 // Add to mesh collector
 614                                 collector.append(liquid_material, vertices, 4, indices, 6);
 615                         }
 616                 }
 617                 /*
 618                         Add water sources to mesh if using new style
 619                 */
 620                 else if(content_features(n).liquid_type == LIQUID_SOURCE
 621                                 && new_style_water)
 622                 {
 623                         assert(content_features(n).special_material);
 624                         video::SMaterial &liquid_material =
 625                                         *content_features(n).special_material;
 626                         assert(content_features(n).special_atlas);
 627                         AtlasPointer &pa_liquid1 =
 628                                         *content_features(n).special_atlas;
 629
 630                         bool top_is_air = false;
 631                         MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
 632                         if(n.getContent() == CONTENT_AIR)
 633                                 top_is_air = true;
 634
 635                         if(top_is_air == false)
 636                                 continue;
 637
 638                         u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));
 639                         video::SColor c = MapBlock_LightColor(
 640                                         content_features(n).vertex_alpha, l);
 641
 642                         video::S3DVertex vertices[4] =
 643                         {
 644                                 /*video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,1),
 645                                 video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c, 1,1),
 646                                 video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
 647                                 video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),*/
 648                                 video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
 649                                                 pa_liquid1.x0(), pa_liquid1.y1()),
 650                                 video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
 651                                                 pa_liquid1.x1(), pa_liquid1.y1()),
 652                                 video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
 653                                                 pa_liquid1.x1(), pa_liquid1.y0()),
 654                                 video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
 655                                                 pa_liquid1.x0(), pa_liquid1.y0()),
 656                         };
 657
 658                         for(s32 i=0; i<4; i++)
 659                         {
 660                                 vertices[i].Pos.Y += (-0.5+node_liquid_level)*BS;
 661                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 662                         }
 663
 664                         u16 indices[] = {0,1,2,2,3,0};
 665                         // Add to mesh collector
 666                         collector.append(liquid_material, vertices, 4, indices, 6);
 667                 }
 668                 /*
 669                         Add leaves if using new style
 670                 */
 671                 else if(n.getContent() == CONTENT_LEAVES && new_style_leaves)
 672                 {
 673                         /*u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));*/
 674                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio)));
 675                         video::SColor c = MapBlock_LightColor(255, l);
 676
 677                         for(u32 j=0; j<6; j++)
 678                         {
 679                                 video::S3DVertex vertices[4] =
 680                                 {
 681                                         /*video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c, 0,1),
 682                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c, 1,1),
 683                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c, 1,0),
 684                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c, 0,0),*/
 685                                         video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c,
 686                                                 pa_leaves1.x0(), pa_leaves1.y1()),
 687                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c,
 688                                                 pa_leaves1.x1(), pa_leaves1.y1()),
 689                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c,
 690                                                 pa_leaves1.x1(), pa_leaves1.y0()),
 691                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c,
 692                                                 pa_leaves1.x0(), pa_leaves1.y0()),
 693                                 };
 694
 695                                 if(j == 0)
 696                                 {
 697                                         for(u16 i=0; i<4; i++)
 698                                                 vertices[i].Pos.rotateXZBy(0);
 699                                 }
 700                                 else if(j == 1)
 701                                 {
 702                                         for(u16 i=0; i<4; i++)
 703                                                 vertices[i].Pos.rotateXZBy(180);
 704                                 }
 705                                 else if(j == 2)
 706                                 {
 707                                         for(u16 i=0; i<4; i++)
 708                                                 vertices[i].Pos.rotateXZBy(-90);
 709                                 }
 710                                 else if(j == 3)
 711                                 {
 712                                         for(u16 i=0; i<4; i++)
 713                                                 vertices[i].Pos.rotateXZBy(90);
 714                                 }
 715                                 else if(j == 4)
 716                                 {
 717                                         for(u16 i=0; i<4; i++)
 718                                                 vertices[i].Pos.rotateYZBy(-90);
 719                                 }
 720                                 else if(j == 5)
 721                                 {
 722                                         for(u16 i=0; i<4; i++)
 723                                                 vertices[i].Pos.rotateYZBy(90);
 724                                 }
 725
 726                                 for(u16 i=0; i<4; i++)
 727                                 {
 728                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 729                                 }
 730
 731                                 u16 indices[] = {0,1,2,2,3,0};
 732                                 // Add to mesh collector
 733                                 collector.append(material_leaves1, vertices, 4, indices, 6);
 734                         }
 735                 }
 736                 /*
 737                         Add glass
 738                 */
 739                 else if(n.getContent() == CONTENT_GLASS)
 740                 {
 741                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio)));
 742                         video::SColor c = MapBlock_LightColor(255, l);
 743
 744                         for(u32 j=0; j<6; j++)
 745                         {
 746                                 video::S3DVertex vertices[4] =
 747                                 {
 748                                         video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c,
 749                                                 pa_glass.x0(), pa_glass.y1()),
 750                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c,
 751                                                 pa_glass.x1(), pa_glass.y1()),
 752                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c,
 753                                                 pa_glass.x1(), pa_glass.y0()),
 754                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c,
 755                                                 pa_glass.x0(), pa_glass.y0()),
 756                                 };
 757
 758                                 if(j == 0)
 759                                 {
 760                                         for(u16 i=0; i<4; i++)
 761                                                 vertices[i].Pos.rotateXZBy(0);
 762                                 }
 763                                 else if(j == 1)
 764                                 {
 765                                         for(u16 i=0; i<4; i++)
 766                                                 vertices[i].Pos.rotateXZBy(180);
 767                                 }
 768                                 else if(j == 2)
 769                                 {
 770                                         for(u16 i=0; i<4; i++)
 771                                                 vertices[i].Pos.rotateXZBy(-90);
 772                                 }
 773                                 else if(j == 3)
 774                                 {
 775                                         for(u16 i=0; i<4; i++)
 776                                                 vertices[i].Pos.rotateXZBy(90);
 777                                 }
 778                                 else if(j == 4)
 779                                 {
 780                                         for(u16 i=0; i<4; i++)
 781                                                 vertices[i].Pos.rotateYZBy(-90);
 782                                 }
 783                                 else if(j == 5)
 784                                 {
 785                                         for(u16 i=0; i<4; i++)
 786                                                 vertices[i].Pos.rotateYZBy(90);
 787                                 }
 788
 789                                 for(u16 i=0; i<4; i++)
 790                                 {
 791                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 792                                 }
 793
 794                                 u16 indices[] = {0,1,2,2,3,0};
 795                                 // Add to mesh collector
 796                                 collector.append(material_glass, vertices, 4, indices, 6);
 797                         }
 798                 }
 799                 /*
 800                         Add fence
 801                 */
 802                 else if(n.getContent() == CONTENT_FENCE)
 803                 {
 804                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio)));
 805                         video::SColor c = MapBlock_LightColor(255, l);
 806
 807                         const f32 post_rad=(f32)BS/10;
 808                         const f32 bar_rad=(f32)BS/20;
 809                         const f32 bar_len=(f32)(BS/2)-post_rad;
 810
 811                         // The post - always present
 812                         v3f pos = intToFloat(p+blockpos_nodes, BS);
 813                         f32 postuv[24]={
 814                                         0.4,0.4,0.6,0.6,
 815                                         0.35,0,0.65,1,
 816                                         0.35,0,0.65,1,
 817                                         0.35,0,0.65,1,
 818                                         0.35,0,0.65,1,
 819                                         0.4,0.4,0.6,0.6};
 820                         makeCuboid(material_wood, &collector,
 821                                 &pa_wood, c, pos,
 822                                 post_rad,BS/2,post_rad, postuv);
 823
 824                         // Now a section of fence, +X, if there's a post there
 825                         v3s16 p2 = p;
 826                         p2.X++;
 827                         MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 828                         if(n2.getContent() == CONTENT_FENCE)
 829                         {
 830                                 pos = intToFloat(p+blockpos_nodes, BS);
 831                                 pos.X += BS/2;
 832                                 pos.Y += BS/4;
 833                                 f32 xrailuv[24]={
 834                                         0,0.4,1,0.6,
 835                                         0,0.4,1,0.6,
 836                                         0,0.4,1,0.6,
 837                                         0,0.4,1,0.6,
 838                                         0,0.4,1,0.6,
 839                                         0,0.4,1,0.6};
 840                                 makeCuboid(material_wood, &collector,
 841                                         &pa_wood, c, pos,
 842                                         bar_len,bar_rad,bar_rad, xrailuv);
 843
 844                                 pos.Y -= BS/2;
 845                                 makeCuboid(material_wood, &collector,
 846                                         &pa_wood, c, pos,
 847                                         bar_len,bar_rad,bar_rad, xrailuv);
 848                         }
 849
 850                         // Now a section of fence, +Z, if there's a post there
 851                         p2 = p;
 852                         p2.Z++;
 853                         n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
 854                         if(n2.getContent() == CONTENT_FENCE)
 855                         {
 856                                 pos = intToFloat(p+blockpos_nodes, BS);
 857                                 pos.Z += BS/2;
 858                                 pos.Y += BS/4;
 859                                 f32 zrailuv[24]={
 860                                         0,0.4,1,0.6,
 861                                         0,0.4,1,0.6,
 862                                         0,0.4,1,0.6,
 863                                         0,0.4,1,0.6,
 864                                         0,0.4,1,0.6,
 865                                         0,0.4,1,0.6};
 866                                 makeCuboid(material_wood, &collector,
 867                                         &pa_wood, c, pos,
 868                                         bar_rad,bar_rad,bar_len, zrailuv);
 869                                 pos.Y -= BS/2;
 870                                 makeCuboid(material_wood, &collector,
 871                                         &pa_wood, c, pos,
 872                                         bar_rad,bar_rad,bar_len, zrailuv);
 873
 874                         }
 875
 876                 }
 877 #if 1
 878                 /*
 879                         Add stones with minerals if stone is invisible
 880                 */
 881                 else if(n.getContent() == CONTENT_STONE && invisible_stone && n.getMineral() != MINERAL_NONE)
 882                 {
 883                         for(u32 j=0; j<6; j++)
 884                         {
 885                                 // NOTE: Hopefully g_6dirs[j] is the right direction...
 886                                 v3s16 dir = g_6dirs[j];
 887                                 /*u8 l = 0;
 888                                 MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + dir);
 889                                 if(content_features(n2).param_type == CPT_LIGHT)
 890                                         l = decode_light(n2.getLightBlend(data->m_daynight_ratio));
 891                                 else
 892                                         l = 255;*/
 893                                 u8 l = 255;
 894                                 video::SColor c = MapBlock_LightColor(255, l);
 895
 896                                 // Get the right texture
 897                                 TileSpec ts = n.getTile(dir);
 898                                 AtlasPointer ap = ts.texture;
 899                                 material_general.setTexture(0, ap.atlas);
 900
 901                                 video::S3DVertex vertices[4] =
 902                                 {
 903                                         /*video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c, 0,1),
 904                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c, 1,1),
 905                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c, 1,0),
 906                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c, 0,0),*/
 907                                         video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c,
 908                                                 ap.x0(), ap.y1()),
 909                                         video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c,
 910                                                 ap.x1(), ap.y1()),
 911                                         video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c,
 912                                                 ap.x1(), ap.y0()),
 913                                         video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c,
 914                                                 ap.x0(), ap.y0()),
 915                                 };
 916
 917                                 if(j == 0)
 918                                 {
 919                                         for(u16 i=0; i<4; i++)
 920                                                 vertices[i].Pos.rotateXZBy(0);
 921                                 }
 922                                 else if(j == 1)
 923                                 {
 924                                         for(u16 i=0; i<4; i++)
 925                                                 vertices[i].Pos.rotateXZBy(180);
 926                                 }
 927                                 else if(j == 2)
 928                                 {
 929                                         for(u16 i=0; i<4; i++)
 930                                                 vertices[i].Pos.rotateXZBy(-90);
 931                                 }
 932                                 else if(j == 3)
 933                                 {
 934                                         for(u16 i=0; i<4; i++)
 935                                                 vertices[i].Pos.rotateXZBy(90);
 936                                 }
 937                                 else if(j == 4)
 938
 939                                 for(u16 i=0; i<4; i++)
 940                                 {
 941                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 942                                 }
 943
 944                                 u16 indices[] = {0,1,2,2,3,0};
 945                                 // Add to mesh collector
 946                                 collector.append(material_general, vertices, 4, indices, 6);
 947                         }
 948                 }
 949 #endif
 950                 else if(n.getContent() == CONTENT_PAPYRUS)
 951                 {
 952                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio)));
 953                         video::SColor c = MapBlock_LightColor(255, l);
 954
 955                         for(u32 j=0; j<4; j++)
 956                         {
 957                                 video::S3DVertex vertices[4] =
 958                                 {
 959                                         video::S3DVertex(-BS/2,-BS/2,0, 0,0,0, c,
 960                                                 pa_papyrus.x0(), pa_papyrus.y1()),
 961                                         video::S3DVertex(BS/2,-BS/2,0, 0,0,0, c,
 962                                                 pa_papyrus.x1(), pa_papyrus.y1()),
 963                                         video::S3DVertex(BS/2,BS/2,0, 0,0,0, c,
 964                                                 pa_papyrus.x1(), pa_papyrus.y0()),
 965                                         video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c,
 966                                                 pa_papyrus.x0(), pa_papyrus.y0()),
 967                                 };
 968
 969                                 if(j == 0)
 970                                 {
 971                                         for(u16 i=0; i<4; i++)
 972                                                 vertices[i].Pos.rotateXZBy(45);
 973                                 }
 974                                 else if(j == 1)
 975                                 {
 976                                         for(u16 i=0; i<4; i++)
 977                                                 vertices[i].Pos.rotateXZBy(-45);
 978                                 }
 979                                 else if(j == 2)
 980                                 {
 981                                         for(u16 i=0; i<4; i++)
 982                                                 vertices[i].Pos.rotateXZBy(135);
 983                                 }
 984                                 else if(j == 3)
 985                                 {
 986                                         for(u16 i=0; i<4; i++)
 987                                                 vertices[i].Pos.rotateXZBy(-135);
 988                                 }
 989
 990                                 for(u16 i=0; i<4; i++)
 991                                 {
 992                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
 993                                 }
 994
 995                                 u16 indices[] = {0,1,2,2,3,0};
 996                                 // Add to mesh collector
 997                                 collector.append(material_papyrus, vertices, 4, indices, 6);
 998                         }
 999                 }
1000                 else if(n.getContent() == CONTENT_JUNGLEGRASS)
1001                 {
1002                         u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio)));
1003                         video::SColor c = MapBlock_LightColor(255, l);
1004
1005                         for(u32 j=0; j<4; j++)
1006                         {
1007                                 video::S3DVertex vertices[4] =
1008                                 {
1009                                         video::S3DVertex(-BS/2,-BS/2,0, 0,0,0, c,
1010                                                 pa_papyrus.x0(), pa_papyrus.y1()),
1011                                         video::S3DVertex(BS/2,-BS/2,0, 0,0,0, c,
1012                                                 pa_papyrus.x1(), pa_papyrus.y1()),
1013                                         video::S3DVertex(BS/2,BS/1,0, 0,0,0, c,
1014                                                 pa_papyrus.x1(), pa_papyrus.y0()),
1015                                         video::S3DVertex(-BS/2,BS/1,0, 0,0,0, c,
1016                                                 pa_papyrus.x0(), pa_papyrus.y0()),
1017                                 };
1018
1019                                 if(j == 0)
1020                                 {
1021                                         for(u16 i=0; i<4; i++)
1022                                                 vertices[i].Pos.rotateXZBy(45);
1023                                 }
1024                                 else if(j == 1)
1025                                 {
1026                                         for(u16 i=0; i<4; i++)
1027                                                 vertices[i].Pos.rotateXZBy(-45);
1028                                 }
1029                                 else if(j == 2)
1030                                 {
1031                                         for(u16 i=0; i<4; i++)
1032                                                 vertices[i].Pos.rotateXZBy(135);
1033                                 }
1034                                 else if(j == 3)
1035                                 {
1036                                         for(u16 i=0; i<4; i++)
1037                                                 vertices[i].Pos.rotateXZBy(-135);
1038                                 }
1039
1040                                 for(u16 i=0; i<4; i++)
1041                                 {
1042                                         vertices[i].Pos *= 1.3;
1043                                         vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
1044                                 }
1045
1046                                 u16 indices[] = {0,1,2,2,3,0};
1047                                 // Add to mesh collector
1048                                 collector.append(material_junglegrass, vertices, 4, indices, 6);
1049                         }
1050                 }
1051                 else if(n.getContent() == CONTENT_RAIL)
1052                 {
1053                         u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));
1054                         video::SColor c = MapBlock_LightColor(255, l);
1055
1056                         bool is_rail_x [] = { false, false };  /* x-1, x+1 */
1057                         bool is_rail_z [] = { false, false };  /* z-1, z+1 */
1058
1059                         MapNode n_minus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1,y,z));
1060                         MapNode n_plus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1,y,z));
1061                         MapNode n_minus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z-1));
1062                         MapNode n_plus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z+1));
1063
1064                         if(n_minus_x.getContent() == CONTENT_RAIL)
1065                                 is_rail_x[0] = true;
1066                         if(n_plus_x.getContent() == CONTENT_RAIL)
1067                                 is_rail_x[1] = true;
1068                         if(n_minus_z.getContent() == CONTENT_RAIL)
1069                                 is_rail_z[0] = true;
1070                         if(n_plus_z.getContent() == CONTENT_RAIL)
1071                                 is_rail_z[1] = true;
1072
1073                         float d = (float)BS/16;
1074                         video::S3DVertex vertices[4] =
1075                         {
1076                                 video::S3DVertex(-BS/2,-BS/2+d,-BS/2, 0,0,0, c,
1077                                         0, 1),
1078                                 video::S3DVertex(BS/2,-BS/2+d,-BS/2, 0,0,0, c,
1079                                         1, 1),
1080                                 video::S3DVertex(BS/2,-BS/2+d,BS/2, 0,0,0, c,
1081                                         1, 0),
1082                                 video::S3DVertex(-BS/2,-BS/2+d,BS/2, 0,0,0, c,
1083                                         0, 0),
1084                         };
1085
1086                         video::SMaterial material_rail;
1087                         material_rail.setFlag(video::EMF_LIGHTING, false);
1088                         material_rail.setFlag(video::EMF_BACK_FACE_CULLING, false);
1089                         material_rail.setFlag(video::EMF_BILINEAR_FILTER, false);
1090                         material_rail.setFlag(video::EMF_FOG_ENABLE, true);
1091                         material_rail.MaterialType
1092                                         = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
1093
1094                         int adjacencies = is_rail_x[0] + is_rail_x[1] + is_rail_z[0] + is_rail_z[1];
1095
1096                         // Assign textures
1097                         if(adjacencies < 2)
1098                                 material_rail.setTexture(0, g_texturesource->getTextureRaw("rail.png"));
1099                         else if(adjacencies == 2)
1100                         {
1101                                 if((is_rail_x[0] && is_rail_x[1]) || (is_rail_z[0] && is_rail_z[1]))
1102                                         material_rail.setTexture(0, g_texturesource->getTextureRaw("rail.png"));
1103                                 else
1104                                         material_rail.setTexture(0, g_texturesource->getTextureRaw("rail_curved.png"));
1105                         }
1106                         else if(adjacencies == 3)
1107                                 material_rail.setTexture(0, g_texturesource->getTextureRaw("rail_t_junction.png"));
1108                         else if(adjacencies == 4)
1109                                 material_rail.setTexture(0, g_texturesource->getTextureRaw("rail_crossing.png"));
1110
1111                         // Rotate textures
1112                         int angle = 0;
1113
1114                         if(adjacencies == 1)
1115                         {
1116                                 if(is_rail_x[0] || is_rail_x[1])
1117                                         angle = 90;
1118                         }
1119                         else if(adjacencies == 2)
1120                         {
1121                                 if(is_rail_x[0] && is_rail_x[1])
1122                                         angle = 90;
1123                                 else if(is_rail_x[0] && is_rail_z[0])
1124                                         angle = 270;
1125                                 else if(is_rail_x[0] && is_rail_z[1])
1126                                         angle = 180;
1127                                 else if(is_rail_x[1] && is_rail_z[1])
1128                                         angle = 90;
1129                         }
1130                         else if(adjacencies == 3)
1131                         {
1132                                 if(!is_rail_x[0])
1133                                         angle=0;
1134                                 if(!is_rail_x[1])
1135                                         angle=180;
1136                                 if(!is_rail_z[0])
1137                                         angle=90;
1138                                 if(!is_rail_z[1])
1139                                         angle=270;
1140                         }
1141
1142                         if(angle != 0) {
1143                                 for(u16 i=0; i<4; i++)
1144                                         vertices[i].Pos.rotateXZBy(angle);
1145                         }
1146
1147                         for(s32 i=0; i<4; i++)
1148                         {
1149                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
1150                         }
1151
1152                         u16 indices[] = {0,1,2,2,3,0};
1153                         collector.append(material_rail, vertices, 4, indices, 6);
1154                 }
1155                 else if (n.getContent() == CONTENT_LADDER) {
1156                         u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));
1157                         video::SColor c(255,l,l,l);
1158
1159                         float d = (float)BS/16;
1160
1161                         // Assume wall is at X+
1162                         video::S3DVertex vertices[4] =
1163                         {
1164                                 video::S3DVertex(BS/2-d,-BS/2,-BS/2, 0,0,0, c, 0,1),
1165                                 video::S3DVertex(BS/2-d,-BS/2,BS/2, 0,0,0, c, 1,1),
1166                                 video::S3DVertex(BS/2-d,BS/2,BS/2, 0,0,0, c, 1,0),
1167                                 video::S3DVertex(BS/2-d,BS/2,-BS/2, 0,0,0, c, 0,0),
1168                         };
1169
1170                         v3s16 dir = unpackDir(n.param2);
1171
1172                         for(s32 i=0; i<4; i++)
1173                         {
1174                                 if(dir == v3s16(1,0,0))
1175                                         vertices[i].Pos.rotateXZBy(0);
1176                                 if(dir == v3s16(-1,0,0))
1177                                         vertices[i].Pos.rotateXZBy(180);
1178                                 if(dir == v3s16(0,0,1))
1179                                         vertices[i].Pos.rotateXZBy(90);
1180                                 if(dir == v3s16(0,0,-1))
1181                                         vertices[i].Pos.rotateXZBy(-90);
1182                                 if(dir == v3s16(0,-1,0))
1183                                         vertices[i].Pos.rotateXYBy(-90);
1184                                 if(dir == v3s16(0,1,0))
1185                                         vertices[i].Pos.rotateXYBy(90);
1186
1187                                 vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
1188                         }
1189
1190                         video::SMaterial material_ladder;
1191                         material_ladder.setFlag(video::EMF_LIGHTING, false);
1192                         material_ladder.setFlag(video::EMF_BACK_FACE_CULLING, false);
1193                         material_ladder.setFlag(video::EMF_BILINEAR_FILTER, false);
1194                         material_ladder.setFlag(video::EMF_FOG_ENABLE, true);
1195                         material_ladder.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
1196                         material_ladder.setTexture(0, g_texturesource->getTextureRaw("ladder.png"));
1197
1198                         u16 indices[] = {0,1,2,2,3,0};
1199                         // Add to mesh collector
1200                         collector.append(material_ladder, vertices, 4, indices, 6);
1201                 }
1202         }
1203 }
1204 #endif
1205