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("clay.png");
 511         sourcelist.push_back("brick.png");
 512         sourcelist.push_back("grass.png");
 513         sourcelist.push_back("grass_footsteps.png");
 514         sourcelist.push_back("tree.png");
 515         sourcelist.push_back("tree_top.png");
 516         sourcelist.push_back("water.png");
 517         sourcelist.push_back("leaves.png");
 518         sourcelist.push_back("cactus_side.png");
 519         sourcelist.push_back("cactus_top.png");
 520         sourcelist.push_back("glass.png");
 521         sourcelist.push_back("mud.png^grass_side.png");
 522         sourcelist.push_back("cobble.png");
 523
 524         sourcelist.push_back("stone.png^mineral_coal.png");
 525         sourcelist.push_back("stone.png^mineral_iron.png");
 526         sourcelist.push_back("mud.png^mineral_coal.png");
 527         sourcelist.push_back("mud.png^mineral_iron.png");
 528         sourcelist.push_back("sand.png^mineral_coal.png");
 529         sourcelist.push_back("sand.png^mineral_iron.png");
 530
 531         // Padding to disallow texture bleeding
 532         s32 padding = 16;
 533
 534         /*
 535                 First pass: generate almost everything
 536         */
 537         core::position2d<s32> pos_in_atlas(0,0);
 538
 539         pos_in_atlas.Y += padding;
 540
 541         for(u32 i=0; i<sourcelist.size(); i++)
 542         {
 543                 std::string name = sourcelist[i];
 544
 545                 /*video::IImage *img = driver->createImageFromFile(
 546                                 getTexturePath(name.c_str()).c_str());
 547                 if(img == NULL)
 548                         continue;
 549
 550                 core::dimension2d<u32> dim = img->getDimension();
 551                 // Make a copy with the right color format
 552                 video::IImage *img2 =
 553                                 driver->createImage(video::ECF_A8R8G8B8, dim);
 554                 img->copyTo(img2);
 555                 img->drop();*/
 556
 557                 // Generate image by name
 558                 video::IImage *img2 = generate_image_from_scratch(name, m_device);
 559                 if(img2 == NULL)
 560                 {
 561                         dstream<<"WARNING: TextureSource::buildMainAtlas(): Couldn't generate texture atlas: Couldn't generate image \""<<name<<"\""<<std::endl;
 562                         continue;
 563                 }
 564
 565                 core::dimension2d<u32> dim = img2->getDimension();
 566
 567                 // Don't add to atlas if image is large
 568                 core::dimension2d<u32> max_size_in_atlas(32,32);
 569                 if(dim.Width > max_size_in_atlas.Width
 570                 || dim.Height > max_size_in_atlas.Height)
 571                 {
 572                         dstream<<"INFO: TextureSource::buildMainAtlas(): Not adding "
 573                                         <<"\""<<name<<"\" because image is large"<<std::endl;
 574                         continue;
 575                 }
 576
 577                 // Stop making atlas if atlas is full
 578                 if(pos_in_atlas.Y + dim.Height > atlas_dim.Height)
 579                 {
 580                         dstream<<"WARNING: TextureSource::buildMainAtlas(): "
 581                                         <<"Atlas is full, not adding more textures."
 582                                         <<std::endl;
 583                         break;
 584                 }
 585
 586                 // Tile it a few times in the X direction
 587                 u16 xwise_tiling = 16;
 588                 for(u32 j=0; j<xwise_tiling; j++)
 589                 {
 590                         // Copy the copy to the atlas
 591                         img2->copyToWithAlpha(atlas_img,
 592                                         pos_in_atlas + v2s32(j*dim.Width,0),
 593                                         core::rect<s32>(v2s32(0,0), dim),
 594                                         video::SColor(255,255,255,255),
 595                                         NULL);
 596                 }
 597
 598                 // Copy the borders a few times to disallow texture bleeding
 599                 for(u32 side=0; side<2; side++) // top and bottom
 600                 for(s32 y0=0; y0<padding; y0++)
 601                 for(s32 x0=0; x0<(s32)xwise_tiling*(s32)dim.Width; x0++)
 602                 {
 603                         s32 dst_y;
 604                         s32 src_y;
 605                         if(side==0)
 606                         {
 607                                 dst_y = y0 + pos_in_atlas.Y + dim.Height;
 608                                 src_y = pos_in_atlas.Y + dim.Height - 1;
 609                         }
 610                         else
 611                         {
 612                                 dst_y = -y0 + pos_in_atlas.Y-1;
 613                                 src_y = pos_in_atlas.Y;
 614                         }
 615                         s32 x = x0 + pos_in_atlas.X * dim.Width;
 616                         video::SColor c = atlas_img->getPixel(x, src_y);
 617                         atlas_img->setPixel(x,dst_y,c);
 618                 }
 619
 620                 img2->drop();
 621
 622                 /*
 623                         Add texture to caches
 624                 */
 625
 626                 // Get next id
 627                 u32 id = m_atlaspointer_cache.size();
 628
 629                 // Create AtlasPointer
 630                 AtlasPointer ap(id);
 631                 ap.atlas = NULL; // Set on the second pass
 632                 ap.pos = v2f((float)pos_in_atlas.X/(float)atlas_dim.Width,
 633                                 (float)pos_in_atlas.Y/(float)atlas_dim.Height);
 634                 ap.size = v2f((float)dim.Width/(float)atlas_dim.Width,
 635                                 (float)dim.Width/(float)atlas_dim.Height);
 636                 ap.tiled = xwise_tiling;
 637
 638                 // Create SourceAtlasPointer and add to containers
 639                 SourceAtlasPointer nap(name, ap, atlas_img, pos_in_atlas, dim);
 640                 m_atlaspointer_cache.push_back(nap);
 641                 m_name_to_id.insert(name, id);
 642
 643                 // Increment position
 644                 pos_in_atlas.Y += dim.Height + padding * 2;
 645         }
 646
 647         /*
 648                 Make texture
 649         */
 650         video::ITexture *t = driver->addTexture("__main_atlas__", atlas_img);
 651         assert(t);
 652
 653         /*
 654                 Second pass: set texture pointer in generated AtlasPointers
 655         */
 656         for(u32 i=0; i<sourcelist.size(); i++)
 657         {
 658                 std::string name = sourcelist[i];
 659                 if(m_name_to_id.find(name) == NULL)
 660                         continue;
 661                 u32 id = m_name_to_id[name];
 662                 //dstream<<"id of name "<<name<<" is "<<id<<std::endl;
 663                 m_atlaspointer_cache[id].a.atlas = t;
 664         }
 665
 666         /*
 667                 Write image to file so that it can be inspected
 668         */
 669         /*driver->writeImageToFile(atlas_img,
 670                         getTexturePath("main_atlas.png").c_str());*/
 671 }
 672
 673 video::IImage* generate_image_from_scratch(std::string name,
 674                 IrrlichtDevice *device)
 675 {
 676         dstream<<"INFO: generate_image_from_scratch(): "
 677                         "name="<<name<<std::endl;
 678
 679         video::IVideoDriver* driver = device->getVideoDriver();
 680         assert(driver);
 681
 682         /*
 683                 Get the base image
 684         */
 685
 686         video::IImage *baseimg = NULL;
 687
 688         char separator = '^';
 689
 690         // Find last meta separator in name
 691         s32 last_separator_position = -1;
 692         for(s32 i=name.size()-1; i>=0; i--)
 693         {
 694                 if(name[i] == separator)
 695                 {
 696                         last_separator_position = i;
 697                         break;
 698                 }
 699         }
 700
 701         /*dstream<<"INFO: generate_image_from_scratch(): "
 702                         <<"last_separator_position="<<last_separator_position
 703                         <<std::endl;*/
 704
 705         /*
 706                 If separator was found, construct the base name and make the
 707                 base image using a recursive call
 708         */
 709         std::string base_image_name;
 710         if(last_separator_position != -1)
 711         {
 712                 // Construct base name
 713                 base_image_name = name.substr(0, last_separator_position);
 714                 dstream<<"INFO: generate_image_from_scratch(): Calling itself recursively"
 715                                 " to get base image, name="<<base_image_name<<std::endl;
 716                 baseimg = generate_image_from_scratch(base_image_name, device);
 717         }
 718
 719         /*
 720                 Parse out the last part of the name of the image and act
 721                 according to it
 722         */
 723
 724         std::string last_part_of_name = name.substr(last_separator_position+1);
 725         dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
 726
 727         // Generate image according to part of name
 728         if(generate_image(last_part_of_name, baseimg, device) == false)
 729         {
 730                 dstream<<"INFO: generate_image_from_scratch(): "
 731                                 "failed to generate \""<<last_part_of_name<<"\""
 732                                 <<std::endl;
 733                 return NULL;
 734         }
 735
 736         return baseimg;
 737 }
 738
 739 bool generate_image(std::string part_of_name, video::IImage *& baseimg,
 740                 IrrlichtDevice *device)
 741 {
 742         video::IVideoDriver* driver = device->getVideoDriver();
 743         assert(driver);
 744
 745         // Stuff starting with [ are special commands
 746         if(part_of_name[0] != '[')
 747         {
 748                 // A normal texture; load it from a file
 749                 std::string path = getTexturePath(part_of_name.c_str());
 750                 dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
 751                                 <<"\""<<std::endl;
 752
 753                 video::IImage *image = driver->createImageFromFile(path.c_str());
 754
 755                 if(image == NULL)
 756                 {
 757                         dstream<<"WARNING: Could not load image \""<<part_of_name
 758                                         <<"\" from path \""<<path<<"\""
 759                                         <<" while building texture"<<std::endl;
 760
 761                         //return false;
 762
 763                         dstream<<"WARNING: Creating a dummy"<<" image for \""
 764                                         <<part_of_name<<"\""<<std::endl;
 765
 766                         // Just create a dummy image
 767                         //core::dimension2d<u32> dim(2,2);
 768                         core::dimension2d<u32> dim(1,1);
 769                         image = driver->createImage(video::ECF_A8R8G8B8, dim);
 770                         assert(image);
 771                         /*image->setPixel(0,0, video::SColor(255,255,0,0));
 772                         image->setPixel(1,0, video::SColor(255,0,255,0));
 773                         image->setPixel(0,1, video::SColor(255,0,0,255));
 774                         image->setPixel(1,1, video::SColor(255,255,0,255));*/
 775                         image->setPixel(0,0, video::SColor(255,myrand()%256,
 776                                         myrand()%256,myrand()%256));
 777                         /*image->setPixel(1,0, video::SColor(255,myrand()%256,
 778                                         myrand()%256,myrand()%256));
 779                         image->setPixel(0,1, video::SColor(255,myrand()%256,
 780                                         myrand()%256,myrand()%256));
 781                         image->setPixel(1,1, video::SColor(255,myrand()%256,
 782                                         myrand()%256,myrand()%256));*/
 783                 }
 784
 785                 // If base image is NULL, load as base.
 786                 if(baseimg == NULL)
 787                 {
 788                         dstream<<"INFO: Setting "<<part_of_name<<" as base"<<std::endl;
 789                         /*
 790                                 Copy it this way to get an alpha channel.
 791                                 Otherwise images with alpha cannot be blitted on
 792                                 images that don't have alpha in the original file.
 793                         */
 794                         core::dimension2d<u32> dim = image->getDimension();
 795                         baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
 796                         image->copyTo(baseimg);
 797                         image->drop();
 798                 }
 799                 // Else blit on base.
 800                 else
 801                 {
 802                         dstream<<"INFO: Blitting "<<part_of_name<<" on base"<<std::endl;
 803                         // Size of the copied area
 804                         core::dimension2d<u32> dim = image->getDimension();
 805                         //core::dimension2d<u32> dim(16,16);
 806                         // Position to copy the blitted to in the base image
 807                         core::position2d<s32> pos_to(0,0);
 808                         // Position to copy the blitted from in the blitted image
 809                         core::position2d<s32> pos_from(0,0);
 810                         // Blit
 811                         image->copyToWithAlpha(baseimg, pos_to,
 812                                         core::rect<s32>(pos_from, dim),
 813                                         video::SColor(255,255,255,255),
 814                                         NULL);
 815                         // Drop image
 816                         image->drop();
 817                 }
 818         }
 819         else
 820         {
 821                 // A special texture modification
 822
 823                 dstream<<"INFO: getTextureIdDirect(): generating special "
 824                                 <<"modification \""<<part_of_name<<"\""
 825                                 <<std::endl;
 826
 827                 /*
 828                         This is the simplest of all; it just adds stuff to the
 829                         name so that a separate texture is created.
 830
 831                         It is used to make textures for stuff that doesn't want
 832                         to implement getting the texture from a bigger texture
 833                         atlas.
 834                 */
 835                 if(part_of_name == "[forcesingle")
 836                 {
 837                 }
 838                 /*
 839                         [crackN
 840                         Adds a cracking texture
 841                 */
 842                 else if(part_of_name.substr(0,6) == "[crack")
 843                 {
 844                         if(baseimg == NULL)
 845                         {
 846                                 dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
 847                                                 <<"for part_of_name="<<part_of_name
 848                                                 <<", cancelling."<<std::endl;
 849                                 return false;
 850                         }
 851
 852                         // Crack image number
 853                         u16 progression = stoi(part_of_name.substr(6));
 854
 855                         // Size of the base image
 856                         core::dimension2d<u32> dim_base = baseimg->getDimension();
 857
 858                         /*
 859                                 Load crack image.
 860
 861                                 It is an image with a number of cracking stages
 862                                 horizontally tiled.
 863                         */
 864                         video::IImage *img_crack = driver->createImageFromFile(
 865                                         getTexturePath("crack.png").c_str());
 866
 867                         if(img_crack)
 868                         {
 869                                 // Dimension of original image
 870                                 core::dimension2d<u32> dim_crack
 871                                                 = img_crack->getDimension();
 872                                 // Count of crack stages
 873                                 u32 crack_count = dim_crack.Height / dim_crack.Width;
 874                                 // Limit progression
 875                                 if(progression > crack_count-1)
 876                                         progression = crack_count-1;
 877                                 // Dimension of a single scaled crack stage
 878                                 core::dimension2d<u32> dim_crack_scaled_single(
 879                                         dim_base.Width,
 880                                         dim_base.Height
 881                                 );
 882                                 // Dimension of scaled size
 883                                 core::dimension2d<u32> dim_crack_scaled(
 884                                         dim_crack_scaled_single.Width,
 885                                         dim_crack_scaled_single.Height * crack_count
 886                                 );
 887                                 // Create scaled crack image
 888                                 video::IImage *img_crack_scaled = driver->createImage(
 889                                                 video::ECF_A8R8G8B8, dim_crack_scaled);
 890                                 if(img_crack_scaled)
 891                                 {
 892                                         // Scale crack image by copying
 893                                         img_crack->copyToScaling(img_crack_scaled);
 894
 895                                         // Position to copy the crack from
 896                                         core::position2d<s32> pos_crack_scaled(
 897                                                 0,
 898                                                 dim_crack_scaled_single.Height * progression
 899                                         );
 900
 901                                         // This tiling does nothing currently but is useful
 902                                         for(u32 y0=0; y0<dim_base.Height
 903                                                         / dim_crack_scaled_single.Height; y0++)
 904                                         for(u32 x0=0; x0<dim_base.Width
 905                                                         / dim_crack_scaled_single.Width; x0++)
 906                                         {
 907                                                 // Position to copy the crack to in the base image
 908                                                 core::position2d<s32> pos_base(
 909                                                         x0*dim_crack_scaled_single.Width,
 910                                                         y0*dim_crack_scaled_single.Height
 911                                                 );
 912                                                 // Rectangle to copy the crack from on the scaled image
 913                                                 core::rect<s32> rect_crack_scaled(
 914                                                         pos_crack_scaled,
 915                                                         dim_crack_scaled_single
 916                                                 );
 917                                                 // Copy it
 918                                                 img_crack_scaled->copyToWithAlpha(baseimg, pos_base,
 919                                                                 rect_crack_scaled,
 920                                                                 video::SColor(255,255,255,255),
 921                                                                 NULL);
 922                                         }
 923
 924                                         img_crack_scaled->drop();
 925                                 }
 926
 927                                 img_crack->drop();
 928                         }
 929                 }
 930                 /*
 931                         [combine:WxH:X,Y=filename:X,Y=filename2
 932                         Creates a bigger texture from an amount of smaller ones
 933                 */
 934                 else if(part_of_name.substr(0,8) == "[combine")
 935                 {
 936                         Strfnd sf(part_of_name);
 937                         sf.next(":");
 938                         u32 w0 = stoi(sf.next("x"));
 939                         u32 h0 = stoi(sf.next(":"));
 940                         dstream<<"INFO: combined w="<<w0<<" h="<<h0<<std::endl;
 941                         core::dimension2d<u32> dim(w0,h0);
 942                         baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
 943                         while(sf.atend() == false)
 944                         {
 945                                 u32 x = stoi(sf.next(","));
 946                                 u32 y = stoi(sf.next("="));
 947                                 std::string filename = sf.next(":");
 948                                 dstream<<"INFO: Adding \""<<filename
 949                                                 <<"\" to combined ("<<x<<","<<y<<")"
 950                                                 <<std::endl;
 951                                 video::IImage *img = driver->createImageFromFile(
 952                                                 getTexturePath(filename.c_str()).c_str());
 953                                 if(img)
 954                                 {
 955                                         core::dimension2d<u32> dim = img->getDimension();
 956                                         dstream<<"INFO: Size "<<dim.Width
 957                                                         <<"x"<<dim.Height<<std::endl;
 958                                         core::position2d<s32> pos_base(x, y);
 959                                         video::IImage *img2 =
 960                                                         driver->createImage(video::ECF_A8R8G8B8, dim);
 961                                         img->copyTo(img2);
 962                                         img->drop();
 963                                         img2->copyToWithAlpha(baseimg, pos_base,
 964                                                         core::rect<s32>(v2s32(0,0), dim),
 965                                                         video::SColor(255,255,255,255),
 966                                                         NULL);
 967                                         img2->drop();
 968                                 }
 969                                 else
 970                                 {
 971                                         dstream<<"WARNING: img==NULL"<<std::endl;
 972                                 }
 973                         }
 974                 }
 975                 /*
 976                         [progressbarN
 977                         Adds a progress bar, 0.0 <= N <= 1.0
 978                 */
 979                 else if(part_of_name.substr(0,12) == "[progressbar")
 980                 {
 981                         if(baseimg == NULL)
 982                         {
 983                                 dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
 984                                                 <<"for part_of_name="<<part_of_name
 985                                                 <<", cancelling."<<std::endl;
 986                                 return false;
 987                         }
 988
 989                         float value = stof(part_of_name.substr(12));
 990                         make_progressbar(value, baseimg);
 991                 }
 992                 /*
 993                         "[noalpha:filename.png"
 994                         Use an image without it's alpha channel.
 995                         Used for the leaves texture when in old leaves mode, so
 996                         that the transparent parts don't look completely black
 997                         when simple alpha channel is used for rendering.
 998                 */
 999                 else if(part_of_name.substr(0,8) == "[noalpha")
1000                 {
1001                         if(baseimg != NULL)
1002                         {
1003                                 dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
1004                                                 <<"for part_of_name="<<part_of_name
1005                                                 <<", cancelling."<<std::endl;
1006                                 return false;
1007                         }
1008
1009                         std::string filename = part_of_name.substr(9);
1010
1011                         std::string path = getTexturePath(filename.c_str());
1012
1013                         dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
1014                                         <<"\""<<std::endl;
1015
1016                         video::IImage *image = driver->createImageFromFile(path.c_str());
1017
1018                         if(image == NULL)
1019                         {
1020                                 dstream<<"WARNING: getTextureIdDirect(): Loading path \""
1021                                                 <<path<<"\" failed"<<std::endl;
1022                         }
1023                         else
1024                         {
1025                                 core::dimension2d<u32> dim = image->getDimension();
1026                                 baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
1027
1028                                 // Set alpha to full
1029                                 for(u32 y=0; y<dim.Height; y++)
1030                                 for(u32 x=0; x<dim.Width; x++)
1031                                 {
1032                                         video::SColor c = image->getPixel(x,y);
1033                                         c.setAlpha(255);
1034                                         image->setPixel(x,y,c);
1035                                 }
1036                                 // Blit
1037                                 image->copyTo(baseimg);
1038
1039                                 image->drop();
1040                         }
1041                 }
1042                 /*
1043                         [inventorycube{topimage{leftimage{rightimage
1044                         In every subimage, replace ^ with &.
1045                         Create an "inventory cube".
1046                         NOTE: This should be used only on its own.
1047                         Example (a grass block (not actually used in game):
1048                         "[inventorycube{grass.png{mud.png&grass_side.png{mud.png&grass_side.png"
1049                 */
1050                 else if(part_of_name.substr(0,14) == "[inventorycube")
1051                 {
1052                         if(baseimg != NULL)
1053                         {
1054                                 dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
1055                                                 <<"for part_of_name="<<part_of_name
1056                                                 <<", cancelling."<<std::endl;
1057                                 return false;
1058                         }
1059
1060                         str_replace_char(part_of_name, '&', '^');
1061                         Strfnd sf(part_of_name);
1062                         sf.next("{");
1063                         std::string imagename_top = sf.next("{");
1064                         std::string imagename_left = sf.next("{");
1065                         std::string imagename_right = sf.next("{");
1066
1067 #if 1
1068                         //TODO
1069
1070                         if(driver->queryFeature(video::EVDF_RENDER_TO_TARGET) == false)
1071                         {
1072                                 dstream<<"WARNING: getTextureIdDirect(): EVDF_RENDER_TO_TARGET"
1073                                                 " not supported. Creating fallback image"<<std::endl;
1074                                 baseimg = generate_image_from_scratch(
1075                                                 imagename_top, device);
1076                                 return true;
1077                         }
1078
1079                         u32 w0 = 64;
1080                         u32 h0 = 64;
1081                         dstream<<"INFO: inventorycube w="<<w0<<" h="<<h0<<std::endl;
1082                         core::dimension2d<u32> dim(w0,h0);
1083
1084                         // Generate images for the faces of the cube
1085                         video::IImage *img_top = generate_image_from_scratch(
1086                                         imagename_top, device);
1087                         video::IImage *img_left = generate_image_from_scratch(
1088                                         imagename_left, device);
1089                         video::IImage *img_right = generate_image_from_scratch(
1090                                         imagename_right, device);
1091                         assert(img_top && img_left && img_right);
1092
1093                         // TODO: Create textures from images
1094                         video::ITexture *texture_top = driver->addTexture(
1095                                         (imagename_top + "__temp__").c_str(), img_top);
1096                         assert(texture_top);
1097
1098                         // Drop images
1099                         img_top->drop();
1100                         img_left->drop();
1101                         img_right->drop();
1102
1103                         // Create render target texture
1104                         video::ITexture *rtt = NULL;
1105                         std::string rtt_name = part_of_name + "_RTT";
1106                         rtt = driver->addRenderTargetTexture(dim, rtt_name.c_str(),
1107                                         video::ECF_A8R8G8B8);
1108                         assert(rtt);
1109
1110                         // Set render target
1111                         driver->setRenderTarget(rtt, true, true,
1112                                         video::SColor(0,0,0,0));
1113
1114                         // Get a scene manager
1115                         scene::ISceneManager *smgr_main = device->getSceneManager();
1116                         assert(smgr_main);
1117                         scene::ISceneManager *smgr = smgr_main->createNewSceneManager();
1118                         assert(smgr);
1119
1120                         /*
1121                                 Create scene:
1122                                 - An unit cube is centered at 0,0,0
1123                                 - Camera looks at cube from Y+, Z- towards Y-, Z+
1124                                 NOTE: Cube has to be changed to something else because
1125                                 the textures cannot be set individually (or can they?)
1126                         */
1127
1128                         scene::ISceneNode* cube = smgr->addCubeSceneNode(1.0, NULL, -1,
1129                                         v3f(0,0,0), v3f(0, 45, 0));
1130                         // Set texture of cube
1131                         cube->setMaterialTexture(0, texture_top);
1132                         //cube->setMaterialFlag(video::EMF_LIGHTING, false);
1133                         cube->setMaterialFlag(video::EMF_ANTI_ALIASING, false);
1134                         cube->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
1135
1136                         scene::ICameraSceneNode* camera = smgr->addCameraSceneNode(0,
1137                                         v3f(0, 1.0, -1.5), v3f(0, 0, 0));
1138                         // Set orthogonal projection
1139                         core::CMatrix4<f32> pm;
1140                         pm.buildProjectionMatrixOrthoLH(1.65, 1.65, 0, 100);
1141                         camera->setProjectionMatrix(pm, true);
1142
1143                         /*scene::ILightSceneNode *light =*/ smgr->addLightSceneNode(0,
1144                                         v3f(-50, 100, 0), video::SColorf(0.5,0.5,0.5), 1000);
1145
1146                         smgr->setAmbientLight(video::SColorf(0.2,0.2,0.2));
1147
1148                         // Render scene
1149                         driver->beginScene(true, true, video::SColor(0,0,0,0));
1150                         smgr->drawAll();
1151                         driver->endScene();
1152
1153                         // NOTE: The scene nodes should not be dropped, otherwise
1154                         //       smgr->drop() segfaults
1155                         /*cube->drop();
1156                         camera->drop();
1157                         light->drop();*/
1158                         // Drop scene manager
1159                         smgr->drop();
1160
1161                         // Unset render target
1162                         driver->setRenderTarget(0, true, true, 0);
1163
1164                         //TODO: Free textures of images
1165                         driver->removeTexture(texture_top);
1166
1167                         // Create image of render target
1168                         video::IImage *image = driver->createImage(rtt, v2s32(0,0), dim);
1169
1170                         assert(image);
1171
1172                         baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
1173
1174                         if(image)
1175                         {
1176                                 image->copyTo(baseimg);
1177                                 image->drop();
1178                         }
1179 #endif
1180                 }
1181                 else
1182                 {
1183                         dstream<<"WARNING: getTextureIdDirect(): Invalid "
1184                                         " modification: \""<<part_of_name<<"\""<<std::endl;
1185                 }
1186         }
1187
1188         return true;
1189 }
1190
1191 void make_progressbar(float value, video::IImage *image)
1192 {
1193         if(image == NULL)
1194                 return;
1195
1196         core::dimension2d<u32> size = image->getDimension();
1197
1198         u32 barheight = size.Height/16;
1199         u32 barpad_x = size.Width/16;
1200         u32 barpad_y = size.Height/16;
1201         u32 barwidth = size.Width - barpad_x*2;
1202         v2u32 barpos(barpad_x, size.Height - barheight - barpad_y);
1203
1204         u32 barvalue_i = (u32)(((float)barwidth * value) + 0.5);
1205
1206         video::SColor active(255,255,0,0);
1207         video::SColor inactive(255,0,0,0);
1208         for(u32 x0=0; x0<barwidth; x0++)
1209         {
1210                 video::SColor *c;
1211                 if(x0 < barvalue_i)
1212                         c = &active;
1213                 else
1214                         c = &inactive;
1215                 u32 x = x0 + barpos.X;
1216                 for(u32 y=barpos.Y; y<barpos.Y+barheight; y++)
1217                 {
1218                         image->setPixel(x,y, *c);
1219                 }
1220         }
1221 }
1222