src/tile.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 "tile.h"
  21 #include "debug.h"
  22 #include "main.h" // for g_settings
  23 #include "filesys.h"
  24 #include "utility.h"
  25
  26 /*
  27         A cache from texture name to texture path
  28 */
  29 MutexedMap<std::string, std::string> g_texturename_to_path_cache;
  30
  31 /*
  32         Replaces the filename extension.
  33         eg:
  34                 std::string image = "a/image.png"
  35                 replace_ext(image, "jpg")
  36                 -> image = "a/image.jpg"
  37         Returns true on success.
  38 */
  39 static bool replace_ext(std::string &path, const char *ext)
  40 {
  41         if(ext == NULL)
  42                 return false;
  43         // Find place of last dot, fail if \ or / found.
  44         s32 last_dot_i = -1;
  45         for(s32 i=path.size()-1; i>=0; i--)
  46         {
  47                 if(path[i] == '.')
  48                 {
  49                         last_dot_i = i;
  50                         break;
  51                 }
  52
  53                 if(path[i] == '\\' || path[i] == '/')
  54                         break;
  55         }
  56         // If not found, return an empty string
  57         if(last_dot_i == -1)
  58                 return false;
  59         // Else make the new path
  60         path = path.substr(0, last_dot_i+1) + ext;
  61         return true;
  62 }
  63
  64 /*
  65         Find out the full path of an image by trying different filename
  66         extensions.
  67
  68         If failed, return "".
  69 */
  70 static std::string getImagePath(std::string path)
  71 {
  72         // A NULL-ended list of possible image extensions
  73         const char *extensions[] = {
  74                 "png", "jpg", "bmp", "tga",
  75                 "pcx", "ppm", "psd", "wal", "rgb",
  76                 NULL
  77         };
  78
  79         const char **ext = extensions;
  80         do{
  81                 bool r = replace_ext(path, *ext);
  82                 if(r == false)
  83                         return "";
  84                 if(fs::PathExists(path))
  85                         return path;
  86         }
  87         while((++ext) != NULL);
  88
  89         return "";
  90 }
  91
  92 /*
  93         Gets the path to a texture by first checking if the texture exists
  94         in texture_path and if not, using the data path.
  95
  96         Checks all supported extensions by replacing the original extension.
  97
  98         If not found, returns "".
  99
 100         Utilizes a thread-safe cache.
 101 */
 102 std::string getTexturePath(const std::string &filename)
 103 {
 104         std::string fullpath = "";
 105         /*
 106                 Check from cache
 107         */
 108         bool incache = g_texturename_to_path_cache.get(filename, &fullpath);
 109         if(incache)
 110                 return fullpath;
 111
 112         /*
 113                 Check from texture_path
 114         */
 115         std::string texture_path = g_settings.get("texture_path");
 116         if(texture_path != "")
 117         {
 118                 std::string testpath = texture_path + '/' + filename;
 119                 // Check all filename extensions. Returns "" if not found.
 120                 fullpath = getImagePath(testpath);
 121         }
 122
 123         /*
 124                 Check from default data directory
 125         */
 126         if(fullpath == "")
 127         {
 128                 std::string testpath = porting::getDataPath(filename.c_str());
 129                 // Check all filename extensions. Returns "" if not found.
 130                 fullpath = getImagePath(testpath);
 131         }
 132
 133         // Add to cache (also an empty result is cached)
 134         g_texturename_to_path_cache.set(filename, fullpath);
 135
 136         // Finally return it
 137         return fullpath;
 138 }
 139
 140 /*
 141         TextureSource
 142 */
 143
 144 TextureSource::TextureSource(IrrlichtDevice *device):
 145                 m_device(device),
 146                 m_main_atlas_image(NULL),
 147                 m_main_atlas_texture(NULL)
 148 {
 149         assert(m_device);
 150
 151         m_atlaspointer_cache_mutex.Init();
 152
 153         m_main_thread = get_current_thread_id();
 154
 155         // Add a NULL AtlasPointer as the first index, named ""
 156         m_atlaspointer_cache.push_back(SourceAtlasPointer(""));
 157         m_name_to_id[""] = 0;
 158
 159         // Build main texture atlas
 160         if(g_settings.getBool("enable_texture_atlas"))
 161                 buildMainAtlas();
 162         else
 163                 dstream<<"INFO: Not building texture atlas."<<std::endl;
 164 }
 165
 166 TextureSource::~TextureSource()
 167 {
 168 }
 169
 170 void TextureSource::processQueue()
 171 {
 172         /*
 173                 Fetch textures
 174         */
 175         if(m_get_texture_queue.size() > 0)
 176         {
 177                 GetRequest<std::string, u32, u8, u8>
 178                                 request = m_get_texture_queue.pop();
 179
 180                 dstream<<"INFO: TextureSource::processQueue(): "
 181                                 <<"got texture request with "
 182                                 <<"name="<<request.key
 183                                 <<std::endl;
 184
 185                 GetResult<std::string, u32, u8, u8>
 186                                 result;
 187                 result.key = request.key;
 188                 result.callers = request.callers;
 189                 result.item = getTextureIdDirect(request.key);
 190
 191                 request.dest->push_back(result);
 192         }
 193 }
 194
 195 u32 TextureSource::getTextureId(const std::string &name)
 196 {
 197         //dstream<<"INFO: getTextureId(): name="<<name<<std::endl;
 198
 199         {
 200                 /*
 201                         See if texture already exists
 202                 */
 203                 JMutexAutoLock lock(m_atlaspointer_cache_mutex);
 204                 core::map<std::string, u32>::Node *n;
 205                 n = m_name_to_id.find(name);
 206                 if(n != NULL)
 207                 {
 208                         return n->getValue();
 209                 }
 210         }
 211
 212         /*
 213                 Get texture
 214         */
 215         if(get_current_thread_id() == m_main_thread)
 216         {
 217                 return getTextureIdDirect(name);
 218         }
 219         else
 220         {
 221                 dstream<<"INFO: getTextureId(): Queued: name="<<name<<std::endl;
 222
 223                 // We're gonna ask the result to be put into here
 224                 ResultQueue<std::string, u32, u8, u8> result_queue;
 225
 226                 // Throw a request in
 227                 m_get_texture_queue.add(name, 0, 0, &result_queue);
 228
 229                 dstream<<"INFO: Waiting for texture from main thread, name="
 230                                 <<name<<std::endl;
 231
 232                 try
 233                 {
 234                         // Wait result for a second
 235                         GetResult<std::string, u32, u8, u8>
 236                                         result = result_queue.pop_front(1000);
 237
 238                         // Check that at least something worked OK
 239                         assert(result.key == name);
 240
 241                         return result.item;
 242                 }
 243                 catch(ItemNotFoundException &e)
 244                 {
 245                         dstream<<"WARNING: Waiting for texture timed out."<<std::endl;
 246                         return 0;
 247                 }
 248         }
 249
 250         dstream<<"WARNING: getTextureId(): Failed"<<std::endl;
 251
 252         return 0;
 253 }
 254
 255 // Draw a progress bar on the image
 256 void make_progressbar(float value, video::IImage *image);
 257
 258 /*
 259         Generate image based on a string like "stone.png" or "[crack0".
 260         if baseimg is NULL, it is created. Otherwise stuff is made on it.
 261 */
 262 bool generate_image(std::string part_of_name, video::IImage *& baseimg,
 263                 IrrlichtDevice *device);
 264
 265 /*
 266         Generates an image from a full string like
 267         "stone.png^mineral_coal.png^[crack0".
 268
 269         This is used by buildMainAtlas().
 270 */
 271 video::IImage* generate_image_from_scratch(std::string name,
 272                 IrrlichtDevice *device);
 273
 274 /*
 275         This method generates all the textures
 276 */
 277 u32 TextureSource::getTextureIdDirect(const std::string &name)
 278 {
 279         dstream<<"INFO: getTextureIdDirect(): name="<<name<<std::endl;
 280
 281         // Empty name means texture 0
 282         if(name == "")
 283         {
 284                 dstream<<"INFO: getTextureIdDirect(): name is empty"<<std::endl;
 285                 return 0;
 286         }
 287
 288         /*
 289                 Calling only allowed from main thread
 290         */
 291         if(get_current_thread_id() != m_main_thread)
 292         {
 293                 dstream<<"ERROR: TextureSource::getTextureIdDirect() "
 294                                 "called not from main thread"<<std::endl;
 295                 return 0;
 296         }
 297
 298         /*
 299                 See if texture already exists
 300         */
 301         {
 302                 JMutexAutoLock lock(m_atlaspointer_cache_mutex);
 303
 304                 core::map<std::string, u32>::Node *n;
 305                 n = m_name_to_id.find(name);
 306                 if(n != NULL)
 307                 {
 308                         dstream<<"INFO: getTextureIdDirect(): name="<<name
 309                                         <<" found in cache"<<std::endl;
 310                         return n->getValue();
 311                 }
 312         }
 313
 314         dstream<<"INFO: getTextureIdDirect(): name="<<name
 315                         <<" NOT found in cache. Creating it."<<std::endl;
 316
 317         /*
 318                 Get the base image
 319         */
 320
 321         char separator = '^';
 322
 323         /*
 324                 This is set to the id of the base image.
 325                 If left 0, there is no base image and a completely new image
 326                 is made.
 327         */
 328         u32 base_image_id = 0;
 329
 330         // Find last meta separator in name
 331         s32 last_separator_position = -1;
 332         for(s32 i=name.size()-1; i>=0; i--)
 333         {
 334                 if(name[i] == separator)
 335                 {
 336                         last_separator_position = i;
 337                         break;
 338                 }
 339         }
 340         /*
 341                 If separator was found, construct the base name and make the
 342                 base image using a recursive call
 343         */
 344         std::string base_image_name;
 345         if(last_separator_position != -1)
 346         {
 347                 // Construct base name
 348                 base_image_name = name.substr(0, last_separator_position);
 349                 dstream<<"INFO: getTextureIdDirect(): Calling itself recursively"
 350                                 " to get base image, name="<<base_image_name<<std::endl;
 351                 base_image_id = getTextureIdDirect(base_image_name);
 352         }
 353
 354         dstream<<"base_image_id="<<base_image_id<<std::endl;
 355
 356         video::IVideoDriver* driver = m_device->getVideoDriver();
 357         assert(driver);
 358
 359         video::ITexture *t = NULL;
 360
 361         /*
 362                 An image will be built from files and then converted into a texture.
 363         */
 364         video::IImage *baseimg = NULL;
 365
 366         // If a base image was found, copy it to baseimg
 367         if(base_image_id != 0)
 368         {
 369                 JMutexAutoLock lock(m_atlaspointer_cache_mutex);
 370
 371                 SourceAtlasPointer ap = m_atlaspointer_cache[base_image_id];
 372
 373                 video::IImage *image = ap.atlas_img;
 374
 375                 if(image == NULL)
 376                 {
 377                         dstream<<"WARNING: getTextureIdDirect(): NULL image in "
 378                                         <<"cache: \""<<base_image_name<<"\""
 379                                         <<std::endl;
 380                 }
 381                 else
 382                 {
 383                         core::dimension2d<u32> dim = ap.intsize;
 384
 385                         baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
 386
 387                         core::position2d<s32> pos_to(0,0);
 388                         core::position2d<s32> pos_from = ap.intpos;
 389
 390                         image->copyTo(
 391                                         baseimg, // target
 392                                         v2s32(0,0), // position in target
 393                                         core::rect<s32>(pos_from, dim) // from
 394                         );
 395
 396                         dstream<<"INFO: getTextureIdDirect(): Loaded \""
 397                                         <<base_image_name<<"\" from image cache"
 398                                         <<std::endl;
 399                 }
 400         }
 401
 402         /*
 403                 Parse out the last part of the name of the image and act
 404                 according to it
 405         */
 406
 407         std::string last_part_of_name = name.substr(last_separator_position+1);
 408         dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
 409
 410         // Generate image according to part of name
 411         if(generate_image(last_part_of_name, baseimg, m_device) == false)
 412         {
 413                 dstream<<"INFO: getTextureIdDirect(): "
 414                                 "failed to generate \""<<last_part_of_name<<"\""
 415                                 <<std::endl;
 416         }
 417
 418         // If no resulting image, print a warning
 419         if(baseimg == NULL)
 420         {
 421                 dstream<<"WARNING: getTextureIdDirect(): baseimg is NULL (attempted to"
 422                                 " create texture \""<<name<<"\""<<std::endl;
 423         }
 424
 425         if(baseimg != NULL)
 426         {
 427                 // Create texture from resulting image
 428                 t = driver->addTexture(name.c_str(), baseimg);
 429         }
 430
 431         /*
 432                 Add texture to caches (add NULL textures too)
 433         */
 434
 435         JMutexAutoLock lock(m_atlaspointer_cache_mutex);
 436
 437         u32 id = m_atlaspointer_cache.size();
 438         AtlasPointer ap(id);
 439         ap.atlas = t;
 440         ap.pos = v2f(0,0);
 441         ap.size = v2f(1,1);
 442         ap.tiled = 0;
 443         core::dimension2d<u32> baseimg_dim(0,0);
 444         if(baseimg)
 445                 baseimg_dim = baseimg->getDimension();
 446         SourceAtlasPointer nap(name, ap, baseimg, v2s32(0,0), baseimg_dim);
 447         m_atlaspointer_cache.push_back(nap);
 448         m_name_to_id.insert(name, id);
 449
 450         dstream<<"INFO: getTextureIdDirect(): name="<<name
 451                         <<": succesfully returning id="<<id<<std::endl;
 452
 453         return id;
 454 }
 455
 456 std::string TextureSource::getTextureName(u32 id)
 457 {
 458         JMutexAutoLock lock(m_atlaspointer_cache_mutex);
 459
 460         if(id >= m_atlaspointer_cache.size())
 461         {
 462                 dstream<<"WARNING: TextureSource::getTextureName(): id="<<id
 463                                 <<" >= m_atlaspointer_cache.size()="
 464                                 <<m_atlaspointer_cache.size()<<std::endl;
 465                 return "";
 466         }
 467
 468         return m_atlaspointer_cache[id].name;
 469 }
 470
 471
 472 AtlasPointer TextureSource::getTexture(u32 id)
 473 {
 474         JMutexAutoLock lock(m_atlaspointer_cache_mutex);
 475
 476         if(id >= m_atlaspointer_cache.size())
 477                 return AtlasPointer(0, NULL);
 478
 479         return m_atlaspointer_cache[id].a;
 480 }
 481
 482 void TextureSource::buildMainAtlas()
 483 {
 484         dstream<<"TextureSource::buildMainAtlas()"<<std::endl;
 485
 486         //return; // Disable (for testing)
 487
 488         video::IVideoDriver* driver = m_device->getVideoDriver();
 489         assert(driver);
 490
 491         JMutexAutoLock lock(m_atlaspointer_cache_mutex);
 492
 493         // Create an image of the right size
 494         core::dimension2d<u32> atlas_dim(1024,1024);
 495         video::IImage *atlas_img =
 496                         driver->createImage(video::ECF_A8R8G8B8, atlas_dim);
 497         assert(atlas_img);
 498
 499         /*
 500                 A list of stuff to add. This should contain as much of the
 501                 stuff shown in game as possible, to minimize texture changes.
 502         */
 503
 504         core::array<std::string> sourcelist;
 505
 506         sourcelist.push_back("stone.png");
 507         sourcelist.push_back("mud.png");
 508         sourcelist.push_back("sand.png");
 509         sourcelist.push_back("sandstone.png");
 510         sourcelist.push_back("grass.png");
 511         sourcelist.push_back("grass_footsteps.png");
 512         sourcelist.push_back("tree.png");
 513         sourcelist.push_back("tree_top.png");
 514         sourcelist.push_back("water.png");
 515         sourcelist.push_back("leaves.png");
 516         sourcelist.push_back("glass.png");
 517         sourcelist.push_back("mud.png^grass_side.png");
 518         sourcelist.push_back("cobble.png");
 519
 520         sourcelist.push_back("stone.png^mineral_coal.png");
 521         sourcelist.push_back("stone.png^mineral_iron.png");
 522         sourcelist.push_back("mud.png^mineral_coal.png");
 523         sourcelist.push_back("mud.png^mineral_iron.png");
 524         sourcelist.push_back("sand.png^mineral_coal.png");
 525         sourcelist.push_back("sand.png^mineral_iron.png");
 526
 527         // Padding to disallow texture bleeding
 528         s32 padding = 16;
 529
 530         /*
 531                 First pass: generate almost everything
 532         */
 533         core::position2d<s32> pos_in_atlas(0,0);
 534
 535         pos_in_atlas.Y += padding;
 536
 537         for(u32 i=0; i<sourcelist.size(); i++)
 538         {
 539                 std::string name = sourcelist[i];
 540
 541                 /*video::IImage *img = driver->createImageFromFile(
 542                                 getTexturePath(name.c_str()).c_str());
 543                 if(img == NULL)
 544                         continue;
 545
 546                 core::dimension2d<u32> dim = img->getDimension();
 547                 // Make a copy with the right color format
 548                 video::IImage *img2 =
 549                                 driver->createImage(video::ECF_A8R8G8B8, dim);
 550                 img->copyTo(img2);
 551                 img->drop();*/
 552
 553                 // Generate image by name
 554                 video::IImage *img2 = generate_image_from_scratch(name, m_device);
 555                 if(img2 == NULL)
 556                 {
 557                         dstream<<"WARNING: TextureSource::buildMainAtlas(): Couldn't generate texture atlas: Couldn't generate image \""<<name<<"\""<<std::endl;
 558                         continue;
 559                 }
 560
 561                 core::dimension2d<u32> dim = img2->getDimension();
 562
 563                 // Don't add to atlas if image is large
 564                 core::dimension2d<u32> max_size_in_atlas(32,32);
 565                 if(dim.Width > max_size_in_atlas.Width
 566                 || dim.Height > max_size_in_atlas.Height)
 567                 {
 568                         dstream<<"INFO: TextureSource::buildMainAtlas(): Not adding "
 569                                         <<"\""<<name<<"\" because image is large"<<std::endl;
 570                         continue;
 571                 }
 572
 573                 // Stop making atlas if atlas is full
 574                 if(pos_in_atlas.Y + dim.Height > atlas_dim.Height)
 575                 {
 576                         dstream<<"WARNING: TextureSource::buildMainAtlas(): "
 577                                         <<"Atlas is full, not adding more textures."
 578                                         <<std::endl;
 579                         break;
 580                 }
 581
 582                 // Tile it a few times in the X direction
 583                 u16 xwise_tiling = 16;
 584                 for(u32 j=0; j<xwise_tiling; j++)
 585                 {
 586                         // Copy the copy to the atlas
 587                         img2->copyToWithAlpha(atlas_img,
 588                                         pos_in_atlas + v2s32(j*dim.Width,0),
 589                                         core::rect<s32>(v2s32(0,0), dim),
 590                                         video::SColor(255,255,255,255),
 591                                         NULL);
 592                 }
 593
 594                 // Copy the borders a few times to disallow texture bleeding
 595                 for(u32 side=0; side<2; side++) // top and bottom
 596                 for(s32 y0=0; y0<padding; y0++)
 597                 for(s32 x0=0; x0<(s32)xwise_tiling*(s32)dim.Width; x0++)
 598                 {
 599                         s32 dst_y;
 600                         s32 src_y;
 601                         if(side==0)
 602                         {
 603                                 dst_y = y0 + pos_in_atlas.Y + dim.Height;
 604                                 src_y = pos_in_atlas.Y + dim.Height - 1;
 605                         }
 606                         else
 607                         {
 608                                 dst_y = -y0 + pos_in_atlas.Y-1;
 609                                 src_y = pos_in_atlas.Y;
 610                         }
 611                         s32 x = x0 + pos_in_atlas.X * dim.Width;
 612                         video::SColor c = atlas_img->getPixel(x, src_y);
 613                         atlas_img->setPixel(x,dst_y,c);
 614                 }
 615
 616                 img2->drop();
 617
 618                 /*
 619                         Add texture to caches
 620                 */
 621
 622                 // Get next id
 623                 u32 id = m_atlaspointer_cache.size();
 624
 625                 // Create AtlasPointer
 626                 AtlasPointer ap(id);
 627                 ap.atlas = NULL; // Set on the second pass
 628                 ap.pos = v2f((float)pos_in_atlas.X/(float)atlas_dim.Width,
 629                                 (float)pos_in_atlas.Y/(float)atlas_dim.Height);
 630                 ap.size = v2f((float)dim.Width/(float)atlas_dim.Width,
 631                                 (float)dim.Width/(float)atlas_dim.Height);
 632                 ap.tiled = xwise_tiling;
 633
 634                 // Create SourceAtlasPointer and add to containers
 635                 SourceAtlasPointer nap(name, ap, atlas_img, pos_in_atlas, dim);
 636                 m_atlaspointer_cache.push_back(nap);
 637                 m_name_to_id.insert(name, id);
 638
 639                 // Increment position
 640                 pos_in_atlas.Y += dim.Height + padding * 2;
 641         }
 642
 643         /*
 644                 Make texture
 645         */
 646         video::ITexture *t = driver->addTexture("__main_atlas__", atlas_img);
 647         assert(t);
 648
 649         /*
 650                 Second pass: set texture pointer in generated AtlasPointers
 651         */
 652         for(u32 i=0; i<sourcelist.size(); i++)
 653         {
 654                 std::string name = sourcelist[i];
 655                 if(m_name_to_id.find(name) == NULL)
 656                         continue;
 657                 u32 id = m_name_to_id[name];
 658                 //dstream<<"id of name "<<name<<" is "<<id<<std::endl;
 659                 m_atlaspointer_cache[id].a.atlas = t;
 660         }
 661
 662         /*
 663                 Write image to file so that it can be inspected
 664         */
 665         /*driver->writeImageToFile(atlas_img,
 666                         getTexturePath("main_atlas.png").c_str());*/
 667 }
 668
 669 video::IImage* generate_image_from_scratch(std::string name,
 670                 IrrlichtDevice *device)
 671 {
 672         dstream<<"INFO: generate_image_from_scratch(): "
 673                         "name="<<name<<std::endl;
 674
 675         video::IVideoDriver* driver = device->getVideoDriver();
 676         assert(driver);
 677
 678         /*
 679                 Get the base image
 680         */
 681
 682         video::IImage *baseimg = NULL;
 683
 684         char separator = '^';
 685
 686         // Find last meta separator in name
 687         s32 last_separator_position = -1;
 688         for(s32 i=name.size()-1; i>=0; i--)
 689         {
 690                 if(name[i] == separator)
 691                 {
 692                         last_separator_position = i;
 693                         break;
 694                 }
 695         }
 696
 697         /*dstream<<"INFO: generate_image_from_scratch(): "
 698                         <<"last_separator_position="<<last_separator_position
 699                         <<std::endl;*/
 700
 701         /*
 702                 If separator was found, construct the base name and make the
 703                 base image using a recursive call
 704         */
 705         std::string base_image_name;
 706         if(last_separator_position != -1)
 707         {
 708                 // Construct base name
 709                 base_image_name = name.substr(0, last_separator_position);
 710                 dstream<<"INFO: generate_image_from_scratch(): Calling itself recursively"
 711                                 " to get base image, name="<<base_image_name<<std::endl;
 712                 baseimg = generate_image_from_scratch(base_image_name, device);
 713         }
 714
 715         /*
 716                 Parse out the last part of the name of the image and act
 717                 according to it
 718         */
 719
 720         std::string last_part_of_name = name.substr(last_separator_position+1);
 721         dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
 722
 723         // Generate image according to part of name
 724         if(generate_image(last_part_of_name, baseimg, device) == false)
 725         {
 726                 dstream<<"INFO: generate_image_from_scratch(): "
 727                                 "failed to generate \""<<last_part_of_name<<"\""
 728                                 <<std::endl;
 729                 return NULL;
 730         }
 731
 732         return baseimg;
 733 }
 734
 735 bool generate_image(std::string part_of_name, video::IImage *& baseimg,
 736                 IrrlichtDevice *device)
 737 {
 738         video::IVideoDriver* driver = device->getVideoDriver();
 739         assert(driver);
 740
 741         // Stuff starting with [ are special commands
 742         if(part_of_name[0] != '[')
 743         {
 744                 // A normal texture; load it from a file
 745                 std::string path = getTexturePath(part_of_name.c_str());
 746                 dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
 747                                 <<"\""<<std::endl;
 748
 749                 video::IImage *image = driver->createImageFromFile(path.c_str());
 750
 751                 if(image == NULL)
 752                 {
 753                         dstream<<"WARNING: Could not load image \""<<part_of_name
 754                                         <<"\" from path \""<<path<<"\""
 755                                         <<" while building texture"<<std::endl;
 756
 757                         //return false;
 758
 759                         dstream<<"WARNING: Creating a dummy"<<" image for \""
 760                                         <<part_of_name<<"\""<<std::endl;
 761
 762                         // Just create a dummy image
 763                         //core::dimension2d<u32> dim(2,2);
 764                         core::dimension2d<u32> dim(1,1);
 765                         image = driver->createImage(video::ECF_A8R8G8B8, dim);
 766                         assert(image);
 767                         /*image->setPixel(0,0, video::SColor(255,255,0,0));
 768                         image->setPixel(1,0, video::SColor(255,0,255,0));
 769                         image->setPixel(0,1, video::SColor(255,0,0,255));
 770                         image->setPixel(1,1, video::SColor(255,255,0,255));*/
 771                         image->setPixel(0,0, video::SColor(255,myrand()%256,
 772                                         myrand()%256,myrand()%256));
 773                         /*image->setPixel(1,0, video::SColor(255,myrand()%256,
 774                                         myrand()%256,myrand()%256));
 775                         image->setPixel(0,1, video::SColor(255,myrand()%256,
 776                                         myrand()%256,myrand()%256));
 777                         image->setPixel(1,1, video::SColor(255,myrand()%256,
 778                                         myrand()%256,myrand()%256));*/
 779                 }
 780
 781                 // If base image is NULL, load as base.
 782                 if(baseimg == NULL)
 783                 {
 784                         dstream<<"INFO: Setting "<<part_of_name<<" as base"<<std::endl;
 785                         /*
 786                                 Copy it this way to get an alpha channel.
 787                                 Otherwise images with alpha cannot be blitted on
 788                                 images that don't have alpha in the original file.
 789                         */
 790                         core::dimension2d<u32> dim = image->getDimension();
 791                         baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
 792                         image->copyTo(baseimg);
 793                         image->drop();
 794                 }
 795                 // Else blit on base.
 796                 else
 797                 {
 798                         dstream<<"INFO: Blitting "<<part_of_name<<" on base"<<std::endl;
 799                         // Size of the copied area
 800                         core::dimension2d<u32> dim = image->getDimension();
 801                         //core::dimension2d<u32> dim(16,16);
 802                         // Position to copy the blitted to in the base image
 803                         core::position2d<s32> pos_to(0,0);
 804                         // Position to copy the blitted from in the blitted image
 805                         core::position2d<s32> pos_from(0,0);
 806                         // Blit
 807                         image->copyToWithAlpha(baseimg, pos_to,
 808                                         core::rect<s32>(pos_from, dim),
 809                                         video::SColor(255,255,255,255),
 810                                         NULL);
 811                         // Drop image
 812                         image->drop();
 813                 }
 814         }
 815         else
 816         {
 817                 // A special texture modification
 818
 819                 dstream<<"INFO: getTextureIdDirect(): generating special "
 820                                 <<"modification \""<<part_of_name<<"\""
 821                                 <<std::endl;
 822
 823                 /*
 824                         This is the simplest of all; it just adds stuff to the
 825                         name so that a separate texture is created.
 826
 827                         It is used to make textures for stuff that doesn't want
 828                         to implement getting the texture from a bigger texture
 829                         atlas.
 830                 */
 831                 if(part_of_name == "[forcesingle")
 832                 {
 833                 }
 834                 /*
 835                         [crackN
 836                         Adds a cracking texture
 837                 */
 838                 else if(part_of_name.substr(0,6) == "[crack")
 839                 {
 840                         if(baseimg == NULL)
 841                         {
 842                                 dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
 843                                                 <<"for part_of_name="<<part_of_name
 844                                                 <<", cancelling."<<std::endl;
 845                                 return false;
 846                         }
 847
 848                         // Crack image number
 849                         u16 progression = stoi(part_of_name.substr(6));
 850
 851                         // Size of the base image
 852                         core::dimension2d<u32> dim_base = baseimg->getDimension();
 853
 854                         /*
 855                                 Load crack image.
 856
 857                                 It is an image with a number of cracking stages
 858                                 horizontally tiled.
 859                         */
 860                         video::IImage *img_crack = driver->createImageFromFile(
 861                                         getTexturePath("crack.png").c_str());
 862
 863                         if(img_crack)
 864                         {
 865                                 // Dimension of original image
 866                                 core::dimension2d<u32> dim_crack
 867                                                 = img_crack->getDimension();
 868                                 // Count of crack stages
 869                                 u32 crack_count = dim_crack.Height / dim_crack.Width;
 870                                 // Limit progression
 871                                 if(progression > crack_count-1)
 872                                         progression = crack_count-1;
 873                                 // Dimension of a single scaled crack stage
 874                                 core::dimension2d<u32> dim_crack_scaled_single(
 875                                         dim_base.Width,
 876                                         dim_base.Height
 877                                 );
 878                                 // Dimension of scaled size
 879                                 core::dimension2d<u32> dim_crack_scaled(
 880                                         dim_crack_scaled_single.Width,
 881                                         dim_crack_scaled_single.Height * crack_count
 882                                 );
 883                                 // Create scaled crack image
 884                                 video::IImage *img_crack_scaled = driver->createImage(
 885                                                 video::ECF_A8R8G8B8, dim_crack_scaled);
 886                                 if(img_crack_scaled)
 887                                 {
 888                                         // Scale crack image by copying
 889                                         img_crack->copyToScaling(img_crack_scaled);
 890
 891                                         // Position to copy the crack from
 892                                         core::position2d<s32> pos_crack_scaled(
 893                                                 0,
 894                                                 dim_crack_scaled_single.Height * progression
 895                                         );
 896
 897                                         // This tiling does nothing currently but is useful
 898                                         for(u32 y0=0; y0<dim_base.Height
 899                                                         / dim_crack_scaled_single.Height; y0++)
 900                                         for(u32 x0=0; x0<dim_base.Width
 901                                                         / dim_crack_scaled_single.Width; x0++)
 902                                         {
 903                                                 // Position to copy the crack to in the base image
 904                                                 core::position2d<s32> pos_base(
 905                                                         x0*dim_crack_scaled_single.Width,
 906                                                         y0*dim_crack_scaled_single.Height
 907                                                 );
 908                                                 // Rectangle to copy the crack from on the scaled image
 909                                                 core::rect<s32> rect_crack_scaled(
 910                                                         pos_crack_scaled,
 911                                                         dim_crack_scaled_single
 912                                                 );
 913                                                 // Copy it
 914                                                 img_crack_scaled->copyToWithAlpha(baseimg, pos_base,
 915                                                                 rect_crack_scaled,
 916                                                                 video::SColor(255,255,255,255),
 917                                                                 NULL);
 918                                         }
 919
 920                                         img_crack_scaled->drop();
 921                                 }
 922
 923                                 img_crack->drop();
 924                         }
 925                 }
 926                 /*
 927                         [combine:WxH:X,Y=filename:X,Y=filename2
 928                         Creates a bigger texture from an amount of smaller ones
 929                 */
 930                 else if(part_of_name.substr(0,8) == "[combine")
 931                 {
 932                         Strfnd sf(part_of_name);
 933                         sf.next(":");
 934                         u32 w0 = stoi(sf.next("x"));
 935                         u32 h0 = stoi(sf.next(":"));
 936                         dstream<<"INFO: combined w="<<w0<<" h="<<h0<<std::endl;
 937                         core::dimension2d<u32> dim(w0,h0);
 938                         baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
 939                         while(sf.atend() == false)
 940                         {
 941                                 u32 x = stoi(sf.next(","));
 942                                 u32 y = stoi(sf.next("="));
 943                                 std::string filename = sf.next(":");
 944                                 dstream<<"INFO: Adding \""<<filename
 945                                                 <<"\" to combined ("<<x<<","<<y<<")"
 946                                                 <<std::endl;
 947                                 video::IImage *img = driver->createImageFromFile(
 948                                                 getTexturePath(filename.c_str()).c_str());
 949                                 if(img)
 950                                 {
 951                                         core::dimension2d<u32> dim = img->getDimension();
 952                                         dstream<<"INFO: Size "<<dim.Width
 953                                                         <<"x"<<dim.Height<<std::endl;
 954                                         core::position2d<s32> pos_base(x, y);
 955                                         video::IImage *img2 =
 956                                                         driver->createImage(video::ECF_A8R8G8B8, dim);
 957                                         img->copyTo(img2);
 958                                         img->drop();
 959                                         img2->copyToWithAlpha(baseimg, pos_base,
 960                                                         core::rect<s32>(v2s32(0,0), dim),
 961                                                         video::SColor(255,255,255,255),
 962                                                         NULL);
 963                                         img2->drop();
 964                                 }
 965                                 else
 966                                 {
 967                                         dstream<<"WARNING: img==NULL"<<std::endl;
 968                                 }
 969                         }
 970                 }
 971                 /*
 972                         [progressbarN
 973                         Adds a progress bar, 0.0 <= N <= 1.0
 974                 */
 975                 else if(part_of_name.substr(0,12) == "[progressbar")
 976                 {
 977                         if(baseimg == NULL)
 978                         {
 979                                 dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
 980                                                 <<"for part_of_name="<<part_of_name
 981                                                 <<", cancelling."<<std::endl;
 982                                 return false;
 983                         }
 984
 985                         float value = stof(part_of_name.substr(12));
 986                         make_progressbar(value, baseimg);
 987                 }
 988                 /*
 989                         "[noalpha:filename.png"
 990                         Use an image without it's alpha channel.
 991                         Used for the leaves texture when in old leaves mode, so
 992                         that the transparent parts don't look completely black
 993                         when simple alpha channel is used for rendering.
 994                 */
 995                 else if(part_of_name.substr(0,8) == "[noalpha")
 996                 {
 997                         if(baseimg != NULL)
 998                         {
 999                                 dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
1000                                                 <<"for part_of_name="<<part_of_name
1001                                                 <<", cancelling."<<std::endl;
1002                                 return false;
1003                         }
1004
1005                         std::string filename = part_of_name.substr(9);
1006
1007                         std::string path = getTexturePath(filename.c_str());
1008
1009                         dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
1010                                         <<"\""<<std::endl;
1011
1012                         video::IImage *image = driver->createImageFromFile(path.c_str());
1013
1014                         if(image == NULL)
1015                         {
1016                                 dstream<<"WARNING: getTextureIdDirect(): Loading path \""
1017                                                 <<path<<"\" failed"<<std::endl;
1018                         }
1019                         else
1020                         {
1021                                 core::dimension2d<u32> dim = image->getDimension();
1022                                 baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
1023
1024                                 // Set alpha to full
1025                                 for(u32 y=0; y<dim.Height; y++)
1026                                 for(u32 x=0; x<dim.Width; x++)
1027                                 {
1028                                         video::SColor c = image->getPixel(x,y);
1029                                         c.setAlpha(255);
1030                                         image->setPixel(x,y,c);
1031                                 }
1032                                 // Blit
1033                                 image->copyTo(baseimg);
1034
1035                                 image->drop();
1036                         }
1037                 }
1038                 /*
1039                         [inventorycube{topimage{leftimage{rightimage
1040                         In every subimage, replace ^ with &.
1041                         Create an "inventory cube".
1042                         NOTE: This should be used only on its own.
1043                         Example (a grass block (not actually used in game):
1044                         "[inventorycube{grass.png{mud.png&grass_side.png{mud.png&grass_side.png"
1045                 */
1046                 else if(part_of_name.substr(0,14) == "[inventorycube")
1047                 {
1048                         if(baseimg != NULL)
1049                         {
1050                                 dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
1051                                                 <<"for part_of_name="<<part_of_name
1052                                                 <<", cancelling."<<std::endl;
1053                                 return false;
1054                         }
1055
1056                         str_replace_char(part_of_name, '&', '^');
1057                         Strfnd sf(part_of_name);
1058                         sf.next("{");
1059                         std::string imagename_top = sf.next("{");
1060                         std::string imagename_left = sf.next("{");
1061                         std::string imagename_right = sf.next("{");
1062
1063 #if 1
1064                         //TODO
1065
1066                         if(driver->queryFeature(video::EVDF_RENDER_TO_TARGET) == false)
1067                         {
1068                                 dstream<<"WARNING: getTextureIdDirect(): EVDF_RENDER_TO_TARGET"
1069                                                 " not supported. Creating fallback image"<<std::endl;
1070                                 baseimg = generate_image_from_scratch(
1071                                                 imagename_top, device);
1072                                 return true;
1073                         }
1074
1075                         u32 w0 = 64;
1076                         u32 h0 = 64;
1077                         dstream<<"INFO: inventorycube w="<<w0<<" h="<<h0<<std::endl;
1078                         core::dimension2d<u32> dim(w0,h0);
1079
1080                         // Generate images for the faces of the cube
1081                         video::IImage *img_top = generate_image_from_scratch(
1082                                         imagename_top, device);
1083                         video::IImage *img_left = generate_image_from_scratch(
1084                                         imagename_left, device);
1085                         video::IImage *img_right = generate_image_from_scratch(
1086                                         imagename_right, device);
1087                         assert(img_top && img_left && img_right);
1088
1089                         // TODO: Create textures from images
1090                         video::ITexture *texture_top = driver->addTexture(
1091                                         (imagename_top + "__temp__").c_str(), img_top);
1092                         assert(texture_top);
1093
1094                         // Drop images
1095                         img_top->drop();
1096                         img_left->drop();
1097                         img_right->drop();
1098
1099                         // Create render target texture
1100                         video::ITexture *rtt = NULL;
1101                         std::string rtt_name = part_of_name + "_RTT";
1102                         rtt = driver->addRenderTargetTexture(dim, rtt_name.c_str(),
1103                                         video::ECF_A8R8G8B8);
1104                         assert(rtt);
1105
1106                         // Set render target
1107                         driver->setRenderTarget(rtt, true, true,
1108                                         video::SColor(0,0,0,0));
1109
1110                         // Get a scene manager
1111                         scene::ISceneManager *smgr_main = device->getSceneManager();
1112                         assert(smgr_main);
1113                         scene::ISceneManager *smgr = smgr_main->createNewSceneManager();
1114                         assert(smgr);
1115
1116                         /*
1117                                 Create scene:
1118                                 - An unit cube is centered at 0,0,0
1119                                 - Camera looks at cube from Y+, Z- towards Y-, Z+
1120                                 NOTE: Cube has to be changed to something else because
1121                                 the textures cannot be set individually (or can they?)
1122                         */
1123
1124                         scene::ISceneNode* cube = smgr->addCubeSceneNode(1.0, NULL, -1,
1125                                         v3f(0,0,0), v3f(0, 45, 0));
1126                         // Set texture of cube
1127                         cube->setMaterialTexture(0, texture_top);
1128                         //cube->setMaterialFlag(video::EMF_LIGHTING, false);
1129                         cube->setMaterialFlag(video::EMF_ANTI_ALIASING, false);
1130                         cube->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
1131
1132                         scene::ICameraSceneNode* camera = smgr->addCameraSceneNode(0,
1133                                         v3f(0, 1.0, -1.5), v3f(0, 0, 0));
1134                         // Set orthogonal projection
1135                         core::CMatrix4<f32> pm;
1136                         pm.buildProjectionMatrixOrthoLH(1.65, 1.65, 0, 100);
1137                         camera->setProjectionMatrix(pm, true);
1138
1139                         /*scene::ILightSceneNode *light =*/ smgr->addLightSceneNode(0,
1140                                         v3f(-50, 100, 0), video::SColorf(0.5,0.5,0.5), 1000);
1141
1142                         smgr->setAmbientLight(video::SColorf(0.2,0.2,0.2));
1143
1144                         // Render scene
1145                         driver->beginScene(true, true, video::SColor(0,0,0,0));
1146                         smgr->drawAll();
1147                         driver->endScene();
1148
1149                         // NOTE: The scene nodes should not be dropped, otherwise
1150                         //       smgr->drop() segfaults
1151                         /*cube->drop();
1152                         camera->drop();
1153                         light->drop();*/
1154                         // Drop scene manager
1155                         smgr->drop();
1156
1157                         // Unset render target
1158                         driver->setRenderTarget(0, true, true, 0);
1159
1160                         //TODO: Free textures of images
1161                         driver->removeTexture(texture_top);
1162
1163                         // Create image of render target
1164                         video::IImage *image = driver->createImage(rtt, v2s32(0,0), dim);
1165
1166                         assert(image);
1167
1168                         baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
1169
1170                         if(image)
1171                         {
1172                                 image->copyTo(baseimg);
1173                                 image->drop();
1174                         }
1175 #endif
1176                 }
1177                 else
1178                 {
1179                         dstream<<"WARNING: getTextureIdDirect(): Invalid "
1180                                         " modification: \""<<part_of_name<<"\""<<std::endl;
1181                 }
1182         }
1183
1184         return true;
1185 }
1186
1187 void make_progressbar(float value, video::IImage *image)
1188 {
1189         if(image == NULL)
1190                 return;
1191
1192         core::dimension2d<u32> size = image->getDimension();
1193
1194         u32 barheight = size.Height/16;
1195         u32 barpad_x = size.Width/16;
1196         u32 barpad_y = size.Height/16;
1197         u32 barwidth = size.Width - barpad_x*2;
1198         v2u32 barpos(barpad_x, size.Height - barheight - barpad_y);
1199
1200         u32 barvalue_i = (u32)(((float)barwidth * value) + 0.5);
1201
1202         video::SColor active(255,255,0,0);
1203         video::SColor inactive(255,0,0,0);
1204         for(u32 x0=0; x0<barwidth; x0++)
1205         {
1206                 video::SColor *c;
1207                 if(x0 < barvalue_i)
1208                         c = &active;
1209                 else
1210                         c = &inactive;
1211                 u32 x = x0 + barpos.X;
1212                 for(u32 y=barpos.Y; y<barpos.Y+barheight; y++)
1213                 {
1214                         image->setPixel(x,y, *c);
1215                 }
1216         }
1217 }
1218