src/client/minimap.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2015 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "minimap.h"
  21 #include <cmath>
  22 #include "client.h"
  23 #include "clientmap.h"
  24 #include "settings.h"
  25 #include "shader.h"
  26 #include "mapblock.h"
  27 #include "client/renderingengine.h"
  28 #include "gettext.h"
  29
  30 ////
  31 //// MinimapUpdateThread
  32 ////
  33
  34 MinimapUpdateThread::~MinimapUpdateThread()
  35 {
  36         for (auto &it : m_blocks_cache) {
  37                 delete it.second;
  38         }
  39
  40         for (auto &q : m_update_queue) {
  41                 delete q.data;
  42         }
  43 }
  44
  45 bool MinimapUpdateThread::pushBlockUpdate(v3s16 pos, MinimapMapblock *data)
  46 {
  47         MutexAutoLock lock(m_queue_mutex);
  48
  49         // Find if block is already in queue.
  50         // If it is, update the data and quit.
  51         for (QueuedMinimapUpdate &q : m_update_queue) {
  52                 if (q.pos == pos) {
  53                         delete q.data;
  54                         q.data = data;
  55                         return false;
  56                 }
  57         }
  58
  59         // Add the block
  60         QueuedMinimapUpdate q;
  61         q.pos  = pos;
  62         q.data = data;
  63         m_update_queue.push_back(q);
  64
  65         return true;
  66 }
  67
  68 bool MinimapUpdateThread::popBlockUpdate(QueuedMinimapUpdate *update)
  69 {
  70         MutexAutoLock lock(m_queue_mutex);
  71
  72         if (m_update_queue.empty())
  73                 return false;
  74
  75         *update = m_update_queue.front();
  76         m_update_queue.pop_front();
  77
  78         return true;
  79 }
  80
  81 void MinimapUpdateThread::enqueueBlock(v3s16 pos, MinimapMapblock *data)
  82 {
  83         pushBlockUpdate(pos, data);
  84         deferUpdate();
  85 }
  86
  87
  88 void MinimapUpdateThread::doUpdate()
  89 {
  90         QueuedMinimapUpdate update;
  91
  92         while (popBlockUpdate(&update)) {
  93                 if (update.data) {
  94                         // Swap two values in the map using single lookup
  95                         std::pair<std::map<v3s16, MinimapMapblock*>::iterator, bool>
  96                             result = m_blocks_cache.insert(std::make_pair(update.pos, update.data));
  97                         if (!result.second) {
  98                                 delete result.first->second;
  99                                 result.first->second = update.data;
 100                         }
 101                 } else {
 102                         std::map<v3s16, MinimapMapblock *>::iterator it;
 103                         it = m_blocks_cache.find(update.pos);
 104                         if (it != m_blocks_cache.end()) {
 105                                 delete it->second;
 106                                 m_blocks_cache.erase(it);
 107                         }
 108                 }
 109         }
 110
 111
 112         if (data->map_invalidated && (
 113                                 data->mode.type == MINIMAP_TYPE_RADAR ||
 114                                 data->mode.type == MINIMAP_TYPE_SURFACE)) {
 115                 getMap(data->pos, data->mode.map_size, data->mode.scan_height);
 116                 data->map_invalidated = false;
 117         }
 118 }
 119
 120 void MinimapUpdateThread::getMap(v3s16 pos, s16 size, s16 height)
 121 {
 122         v3s16 pos_min(pos.X - size / 2, pos.Y - height / 2, pos.Z - size / 2);
 123         v3s16 pos_max(pos_min.X + size - 1, pos.Y + height / 2, pos_min.Z + size - 1);
 124         v3s16 blockpos_min = getNodeBlockPos(pos_min);
 125         v3s16 blockpos_max = getNodeBlockPos(pos_max);
 126
 127 // clear the map
 128         for (int z = 0; z < size; z++)
 129         for (int x = 0; x < size; x++) {
 130                 MinimapPixel &mmpixel = data->minimap_scan[x + z * size];
 131                 mmpixel.air_count = 0;
 132                 mmpixel.height = 0;
 133                 mmpixel.n = MapNode(CONTENT_AIR);
 134         }
 135
 136 // draw the map
 137         v3s16 blockpos;
 138         for (blockpos.Z = blockpos_min.Z; blockpos.Z <= blockpos_max.Z; ++blockpos.Z)
 139         for (blockpos.Y = blockpos_min.Y; blockpos.Y <= blockpos_max.Y; ++blockpos.Y)
 140         for (blockpos.X = blockpos_min.X; blockpos.X <= blockpos_max.X; ++blockpos.X) {
 141                 std::map<v3s16, MinimapMapblock *>::const_iterator pblock =
 142                         m_blocks_cache.find(blockpos);
 143                 if (pblock == m_blocks_cache.end())
 144                         continue;
 145                 const MinimapMapblock &block = *pblock->second;
 146
 147                 v3s16 block_node_min(blockpos * MAP_BLOCKSIZE);
 148                 v3s16 block_node_max(block_node_min + MAP_BLOCKSIZE - 1);
 149                 // clip
 150                 v3s16 range_min = componentwise_max(block_node_min, pos_min);
 151                 v3s16 range_max = componentwise_min(block_node_max, pos_max);
 152
 153                 v3s16 pos;
 154                 pos.Y = range_min.Y;
 155                 for (pos.Z = range_min.Z; pos.Z <= range_max.Z; ++pos.Z)
 156                 for (pos.X = range_min.X; pos.X <= range_max.X; ++pos.X) {
 157                         v3s16 inblock_pos = pos - block_node_min;
 158                         const MinimapPixel &in_pixel =
 159                                 block.data[inblock_pos.Z * MAP_BLOCKSIZE + inblock_pos.X];
 160
 161                         v3s16 inmap_pos = pos - pos_min;
 162                         MinimapPixel &out_pixel =
 163                                 data->minimap_scan[inmap_pos.X + inmap_pos.Z * size];
 164
 165                         out_pixel.air_count += in_pixel.air_count;
 166                         if (in_pixel.n.param0 != CONTENT_AIR) {
 167                                 out_pixel.n = in_pixel.n;
 168                                 out_pixel.height = inmap_pos.Y + in_pixel.height;
 169                         }
 170                 }
 171         }
 172 }
 173
 174 ////
 175 //// Mapper
 176 ////
 177
 178 Minimap::Minimap(Client *client)
 179 {
 180         this->client    = client;
 181         this->driver    = RenderingEngine::get_video_driver();
 182         this->m_tsrc    = client->getTextureSource();
 183         this->m_shdrsrc = client->getShaderSource();
 184         this->m_ndef    = client->getNodeDefManager();
 185
 186         m_angle = 0.f;
 187         m_current_mode_index = 0;
 188
 189         // Initialize static settings
 190         m_enable_shaders = g_settings->getBool("enable_shaders");
 191         m_surface_mode_scan_height =
 192                 g_settings->getBool("minimap_double_scan_height") ? 256 : 128;
 193
 194         // Initialize minimap modes
 195         addMode(MINIMAP_TYPE_OFF);
 196         addMode(MINIMAP_TYPE_SURFACE, 256);
 197         addMode(MINIMAP_TYPE_SURFACE, 128);
 198         addMode(MINIMAP_TYPE_SURFACE, 64);
 199         addMode(MINIMAP_TYPE_RADAR,   512);
 200         addMode(MINIMAP_TYPE_RADAR,   256);
 201         addMode(MINIMAP_TYPE_RADAR,   128);
 202
 203         // Initialize minimap data
 204         data = new MinimapData;
 205         data->map_invalidated = true;
 206
 207         data->minimap_shape_round = g_settings->getBool("minimap_shape_round");
 208
 209         // Get round minimap textures
 210         data->minimap_mask_round = driver->createImage(
 211                 m_tsrc->getTexture("minimap_mask_round.png"),
 212                 core::position2d<s32>(0, 0),
 213                 core::dimension2d<u32>(MINIMAP_MAX_SX, MINIMAP_MAX_SY));
 214         data->minimap_overlay_round = m_tsrc->getTexture("minimap_overlay_round.png");
 215
 216         // Get square minimap textures
 217         data->minimap_mask_square = driver->createImage(
 218                 m_tsrc->getTexture("minimap_mask_square.png"),
 219                 core::position2d<s32>(0, 0),
 220                 core::dimension2d<u32>(MINIMAP_MAX_SX, MINIMAP_MAX_SY));
 221         data->minimap_overlay_square = m_tsrc->getTexture("minimap_overlay_square.png");
 222
 223         // Create player marker texture
 224         data->player_marker = m_tsrc->getTexture("player_marker.png");
 225         // Create object marker texture
 226         data->object_marker_red = m_tsrc->getTexture("object_marker_red.png");
 227
 228         setModeIndex(0);
 229
 230         // Create mesh buffer for minimap
 231         m_meshbuffer = getMinimapMeshBuffer();
 232
 233         // Initialize and start thread
 234         m_minimap_update_thread = new MinimapUpdateThread();
 235         m_minimap_update_thread->data = data;
 236         m_minimap_update_thread->start();
 237 }
 238
 239 Minimap::~Minimap()
 240 {
 241         m_minimap_update_thread->stop();
 242         m_minimap_update_thread->wait();
 243
 244         m_meshbuffer->drop();
 245
 246         data->minimap_mask_round->drop();
 247         data->minimap_mask_square->drop();
 248
 249         driver->removeTexture(data->texture);
 250         driver->removeTexture(data->heightmap_texture);
 251         driver->removeTexture(data->minimap_overlay_round);
 252         driver->removeTexture(data->minimap_overlay_square);
 253         driver->removeTexture(data->object_marker_red);
 254
 255         for (MinimapMarker *m : m_markers)
 256                 delete m;
 257         m_markers.clear();
 258
 259         delete data;
 260         delete m_minimap_update_thread;
 261 }
 262
 263 void Minimap::addBlock(v3s16 pos, MinimapMapblock *data)
 264 {
 265         m_minimap_update_thread->enqueueBlock(pos, data);
 266 }
 267
 268 void Minimap::toggleMinimapShape()
 269 {
 270         MutexAutoLock lock(m_mutex);
 271
 272         data->minimap_shape_round = !data->minimap_shape_round;
 273         g_settings->setBool("minimap_shape_round", data->minimap_shape_round);
 274         m_minimap_update_thread->deferUpdate();
 275 }
 276
 277 void Minimap::setMinimapShape(MinimapShape shape)
 278 {
 279         MutexAutoLock lock(m_mutex);
 280
 281         if (shape == MINIMAP_SHAPE_SQUARE)
 282                 data->minimap_shape_round = false;
 283         else if (shape == MINIMAP_SHAPE_ROUND)
 284                 data->minimap_shape_round = true;
 285
 286         g_settings->setBool("minimap_shape_round", data->minimap_shape_round);
 287         m_minimap_update_thread->deferUpdate();
 288 }
 289
 290 MinimapShape Minimap::getMinimapShape()
 291 {
 292         if (data->minimap_shape_round) {
 293                 return MINIMAP_SHAPE_ROUND;
 294         }
 295
 296         return MINIMAP_SHAPE_SQUARE;
 297 }
 298
 299 void Minimap::setModeIndex(size_t index)
 300 {
 301         MutexAutoLock lock(m_mutex);
 302
 303         if (index < m_modes.size()) {
 304                 data->mode = m_modes[index];
 305                 m_current_mode_index = index;
 306         } else {
 307                 data->mode = MinimapModeDef{MINIMAP_TYPE_OFF, N_("Minimap hidden"), 0, 0, ""};
 308                 m_current_mode_index = 0;
 309         }
 310
 311         data->map_invalidated = true;
 312
 313         if (m_minimap_update_thread)
 314                 m_minimap_update_thread->deferUpdate();
 315 }
 316
 317 void Minimap::addMode(MinimapModeDef mode)
 318 {
 319         // Check validity
 320         if (mode.type == MINIMAP_TYPE_TEXTURE) {
 321                 if (mode.texture.empty())
 322                         return;
 323                 if (mode.scale < 1)
 324                         mode.scale = 1;
 325         }
 326
 327         int zoom = -1;
 328
 329         // Build a default standard label
 330         if (mode.label == "") {
 331                 switch (mode.type) {
 332                         case MINIMAP_TYPE_OFF:
 333                                 mode.label = N_("Minimap hidden");
 334                                 break;
 335                         case MINIMAP_TYPE_SURFACE:
 336                                 mode.label = N_("Minimap in surface mode, Zoom x%d");
 337                                 if (mode.map_size > 0)
 338                                         zoom = 256 / mode.map_size;
 339                                 break;
 340                         case MINIMAP_TYPE_RADAR:
 341                                 mode.label = N_("Minimap in radar mode, Zoom x%d");
 342                                 if (mode.map_size > 0)
 343                                         zoom = 512 / mode.map_size;
 344                                 break;
 345                         case MINIMAP_TYPE_TEXTURE:
 346                                 mode.label = N_("Minimap in texture mode");
 347                                 break;
 348                         default:
 349                                 break;
 350                 }
 351         }
 352
 353         if (zoom >= 0) {
 354                 char label_buf[1024];
 355                 porting::mt_snprintf(label_buf, sizeof(label_buf),
 356                         mode.label.c_str(), zoom);
 357                 mode.label = label_buf;
 358         }
 359
 360         m_modes.push_back(mode);
 361 }
 362
 363 void Minimap::addMode(MinimapType type, u16 size, std::string label,
 364                 std::string texture, u16 scale)
 365 {
 366         MinimapModeDef mode;
 367         mode.type = type;
 368         mode.label = label;
 369         mode.map_size = size;
 370         mode.texture = texture;
 371         mode.scale = scale;
 372         switch (type) {
 373                 case MINIMAP_TYPE_SURFACE:
 374                         mode.scan_height = m_surface_mode_scan_height;
 375                         break;
 376                 case MINIMAP_TYPE_RADAR:
 377                         mode.scan_height = 32;
 378                         break;
 379                 default:
 380                         mode.scan_height = 0;
 381         }
 382         addMode(mode);
 383 }
 384
 385 void Minimap::nextMode()
 386 {
 387         if (m_modes.empty())
 388                 return;
 389         m_current_mode_index++;
 390         if (m_current_mode_index >= m_modes.size())
 391                 m_current_mode_index = 0;
 392
 393         setModeIndex(m_current_mode_index);
 394 }
 395
 396 void Minimap::setPos(v3s16 pos)
 397 {
 398         bool do_update = false;
 399
 400         {
 401                 MutexAutoLock lock(m_mutex);
 402
 403                 if (pos != data->old_pos) {
 404                         data->old_pos = data->pos;
 405                         data->pos = pos;
 406                         do_update = true;
 407                 }
 408         }
 409
 410         if (do_update)
 411                 m_minimap_update_thread->deferUpdate();
 412 }
 413
 414 void Minimap::setAngle(f32 angle)
 415 {
 416         m_angle = angle;
 417 }
 418
 419 void Minimap::blitMinimapPixelsToImageRadar(video::IImage *map_image)
 420 {
 421         video::SColor c(240, 0, 0, 0);
 422         for (s16 x = 0; x < data->mode.map_size; x++)
 423         for (s16 z = 0; z < data->mode.map_size; z++) {
 424                 MinimapPixel *mmpixel = &data->minimap_scan[x + z * data->mode.map_size];
 425
 426                 if (mmpixel->air_count > 0)
 427                         c.setGreen(core::clamp(core::round32(32 + mmpixel->air_count * 8), 0, 255));
 428                 else
 429                         c.setGreen(0);
 430
 431                 map_image->setPixel(x, data->mode.map_size - z - 1, c);
 432         }
 433 }
 434
 435 void Minimap::blitMinimapPixelsToImageSurface(
 436         video::IImage *map_image, video::IImage *heightmap_image)
 437 {
 438         // This variable creation/destruction has a 1% cost on rendering minimap
 439         video::SColor tilecolor;
 440         for (s16 x = 0; x < data->mode.map_size; x++)
 441         for (s16 z = 0; z < data->mode.map_size; z++) {
 442                 MinimapPixel *mmpixel = &data->minimap_scan[x + z * data->mode.map_size];
 443
 444                 const ContentFeatures &f = m_ndef->get(mmpixel->n);
 445                 const TileDef *tile = &f.tiledef[0];
 446
 447                 // Color of the 0th tile (mostly this is the topmost)
 448                 if(tile->has_color)
 449                         tilecolor = tile->color;
 450                 else
 451                         mmpixel->n.getColor(f, &tilecolor);
 452
 453                 tilecolor.setRed(tilecolor.getRed() * f.minimap_color.getRed() / 255);
 454                 tilecolor.setGreen(tilecolor.getGreen() * f.minimap_color.getGreen() / 255);
 455                 tilecolor.setBlue(tilecolor.getBlue() * f.minimap_color.getBlue() / 255);
 456                 tilecolor.setAlpha(240);
 457
 458                 map_image->setPixel(x, data->mode.map_size - z - 1, tilecolor);
 459
 460                 u32 h = mmpixel->height;
 461                 heightmap_image->setPixel(x,data->mode.map_size - z - 1,
 462                         video::SColor(255, h, h, h));
 463         }
 464 }
 465
 466 video::ITexture *Minimap::getMinimapTexture()
 467 {
 468         // update minimap textures when new scan is ready
 469         if (data->map_invalidated && data->mode.type != MINIMAP_TYPE_TEXTURE)
 470                 return data->texture;
 471
 472         // create minimap and heightmap images in memory
 473         core::dimension2d<u32> dim(data->mode.map_size, data->mode.map_size);
 474         video::IImage *map_image       = driver->createImage(video::ECF_A8R8G8B8, dim);
 475         video::IImage *heightmap_image = driver->createImage(video::ECF_A8R8G8B8, dim);
 476         video::IImage *minimap_image   = driver->createImage(video::ECF_A8R8G8B8,
 477                 core::dimension2d<u32>(MINIMAP_MAX_SX, MINIMAP_MAX_SY));
 478
 479         // Blit MinimapPixels to images
 480         switch(data->mode.type) {
 481         case MINIMAP_TYPE_OFF:
 482                 break;
 483         case MINIMAP_TYPE_SURFACE:
 484                 blitMinimapPixelsToImageSurface(map_image, heightmap_image);
 485                 break;
 486         case MINIMAP_TYPE_RADAR:
 487                 blitMinimapPixelsToImageRadar(map_image);
 488                 break;
 489         case MINIMAP_TYPE_TEXTURE:
 490                 // Want to use texture source, to : 1 find texture, 2 cache it
 491                 video::ITexture* texture = m_tsrc->getTexture(data->mode.texture);
 492                 video::IImage* image = driver->createImageFromData(
 493                          texture->getColorFormat(), texture->getSize(), texture->lock(), true, false);
 494                 texture->unlock();
 495
 496                 auto dim = image->getDimension();
 497
 498                 map_image->fill(video::SColor(255, 0, 0, 0));
 499
 500                 image->copyTo(map_image,
 501                         irr::core::vector2d<int> {
 502                                 ((data->mode.map_size - (static_cast<int>(dim.Width))) >> 1)
 503                                         - data->pos.X / data->mode.scale,
 504                                 ((data->mode.map_size - (static_cast<int>(dim.Height))) >> 1)
 505                                         + data->pos.Z / data->mode.scale
 506                         });
 507                 image->drop();
 508         }
 509
 510         map_image->copyToScaling(minimap_image);
 511         map_image->drop();
 512
 513         video::IImage *minimap_mask = data->minimap_shape_round ?
 514                 data->minimap_mask_round : data->minimap_mask_square;
 515
 516         if (minimap_mask) {
 517                 for (s16 y = 0; y < MINIMAP_MAX_SY; y++)
 518                 for (s16 x = 0; x < MINIMAP_MAX_SX; x++) {
 519                         const video::SColor &mask_col = minimap_mask->getPixel(x, y);
 520                         if (!mask_col.getAlpha())
 521                                 minimap_image->setPixel(x, y, video::SColor(0,0,0,0));
 522                 }
 523         }
 524
 525         if (data->texture)
 526                 driver->removeTexture(data->texture);
 527         if (data->heightmap_texture)
 528                 driver->removeTexture(data->heightmap_texture);
 529
 530         data->texture = driver->addTexture("minimap__", minimap_image);
 531         data->heightmap_texture =
 532                 driver->addTexture("minimap_heightmap__", heightmap_image);
 533         minimap_image->drop();
 534         heightmap_image->drop();
 535
 536         data->map_invalidated = true;
 537
 538         return data->texture;
 539 }
 540
 541 v3f Minimap::getYawVec()
 542 {
 543         if (data->minimap_shape_round) {
 544                 return v3f(
 545                         std::cos(m_angle * core::DEGTORAD),
 546                         std::sin(m_angle * core::DEGTORAD),
 547                         1.0);
 548         }
 549
 550         return v3f(1.0, 0.0, 1.0);
 551 }
 552
 553 scene::SMeshBuffer *Minimap::getMinimapMeshBuffer()
 554 {
 555         scene::SMeshBuffer *buf = new scene::SMeshBuffer();
 556         buf->Vertices.set_used(4);
 557         buf->Indices.set_used(6);
 558         static const video::SColor c(255, 255, 255, 255);
 559
 560         buf->Vertices[0] = video::S3DVertex(-1, -1, 0, 0, 0, 1, c, 0, 1);
 561         buf->Vertices[1] = video::S3DVertex(-1,  1, 0, 0, 0, 1, c, 0, 0);
 562         buf->Vertices[2] = video::S3DVertex( 1,  1, 0, 0, 0, 1, c, 1, 0);
 563         buf->Vertices[3] = video::S3DVertex( 1, -1, 0, 0, 0, 1, c, 1, 1);
 564
 565         buf->Indices[0] = 0;
 566         buf->Indices[1] = 1;
 567         buf->Indices[2] = 2;
 568         buf->Indices[3] = 2;
 569         buf->Indices[4] = 3;
 570         buf->Indices[5] = 0;
 571
 572         return buf;
 573 }
 574
 575 void Minimap::drawMinimap()
 576 {
 577         // Non hud managed minimap drawing (legacy minimap)
 578         v2u32 screensize = RenderingEngine::get_instance()->getWindowSize();
 579         const u32 size = 0.25 * screensize.Y;
 580
 581         drawMinimap(core::rect<s32>(
 582                 screensize.X - size * 2 - 10, 10,
 583                 screensize.X - size - 10, size + 10));
 584 }
 585
 586 void Minimap::drawMinimap(core::rect<s32> rect) {
 587
 588         video::ITexture *minimap_texture = getMinimapTexture();
 589         if (!minimap_texture)
 590                 return;
 591
 592         if (data->mode.type == MINIMAP_TYPE_OFF)
 593                 return;
 594
 595         updateActiveMarkers();
 596
 597         core::rect<s32> oldViewPort = driver->getViewPort();
 598         core::matrix4 oldProjMat = driver->getTransform(video::ETS_PROJECTION);
 599         core::matrix4 oldViewMat = driver->getTransform(video::ETS_VIEW);
 600
 601         driver->setViewPort(rect);
 602         driver->setTransform(video::ETS_PROJECTION, core::matrix4());
 603         driver->setTransform(video::ETS_VIEW, core::matrix4());
 604
 605         core::matrix4 matrix;
 606         matrix.makeIdentity();
 607
 608         video::SMaterial &material = m_meshbuffer->getMaterial();
 609         material.setFlag(video::EMF_TRILINEAR_FILTER, true);
 610         material.Lighting = false;
 611         material.TextureLayer[0].Texture = minimap_texture;
 612         material.TextureLayer[1].Texture = data->heightmap_texture;
 613
 614         if (m_enable_shaders && data->mode.type == MINIMAP_TYPE_SURFACE) {
 615                 u16 sid = m_shdrsrc->getShader("minimap_shader", TILE_MATERIAL_ALPHA);
 616                 material.MaterialType = m_shdrsrc->getShaderInfo(sid).material;
 617         } else {
 618                 material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 619         }
 620
 621         if (data->minimap_shape_round)
 622                 matrix.setRotationDegrees(core::vector3df(0, 0, 360 - m_angle));
 623
 624         // Draw minimap
 625         driver->setTransform(video::ETS_WORLD, matrix);
 626         driver->setMaterial(material);
 627         driver->drawMeshBuffer(m_meshbuffer);
 628
 629         // Draw overlay
 630         video::ITexture *minimap_overlay = data->minimap_shape_round ?
 631                 data->minimap_overlay_round : data->minimap_overlay_square;
 632         material.TextureLayer[0].Texture = minimap_overlay;
 633         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 634         driver->setMaterial(material);
 635         driver->drawMeshBuffer(m_meshbuffer);
 636
 637         // Draw player marker on minimap
 638         if (data->minimap_shape_round) {
 639                 matrix.setRotationDegrees(core::vector3df(0, 0, 0));
 640         } else {
 641                 matrix.setRotationDegrees(core::vector3df(0, 0, m_angle));
 642         }
 643
 644         material.TextureLayer[0].Texture = data->player_marker;
 645         driver->setTransform(video::ETS_WORLD, matrix);
 646         driver->setMaterial(material);
 647         driver->drawMeshBuffer(m_meshbuffer);
 648
 649         // Reset transformations
 650         driver->setTransform(video::ETS_VIEW, oldViewMat);
 651         driver->setTransform(video::ETS_PROJECTION, oldProjMat);
 652         driver->setViewPort(oldViewPort);
 653
 654         // Draw player markers
 655         v2s32 s_pos(rect.UpperLeftCorner.X, rect.UpperLeftCorner.Y);
 656         core::dimension2di imgsize(data->object_marker_red->getOriginalSize());
 657         core::rect<s32> img_rect(0, 0, imgsize.Width, imgsize.Height);
 658         static const video::SColor col(255, 255, 255, 255);
 659         static const video::SColor c[4] = {col, col, col, col};
 660         f32 sin_angle = std::sin(m_angle * core::DEGTORAD);
 661         f32 cos_angle = std::cos(m_angle * core::DEGTORAD);
 662         s32 marker_size2 =  0.025 * (float)rect.getWidth();;
 663         for (std::list<v2f>::const_iterator
 664                         i = m_active_markers.begin();
 665                         i != m_active_markers.end(); ++i) {
 666                 v2f posf = *i;
 667                 if (data->minimap_shape_round) {
 668                         f32 t1 = posf.X * cos_angle - posf.Y * sin_angle;
 669                         f32 t2 = posf.X * sin_angle + posf.Y * cos_angle;
 670                         posf.X = t1;
 671                         posf.Y = t2;
 672                 }
 673                 posf.X = (posf.X + 0.5) * (float)rect.getWidth();
 674                 posf.Y = (posf.Y + 0.5) * (float)rect.getHeight();
 675                 core::rect<s32> dest_rect(
 676                         s_pos.X + posf.X - marker_size2,
 677                         s_pos.Y + posf.Y - marker_size2,
 678                         s_pos.X + posf.X + marker_size2,
 679                         s_pos.Y + posf.Y + marker_size2);
 680                 driver->draw2DImage(data->object_marker_red, dest_rect,
 681                         img_rect, &dest_rect, &c[0], true);
 682         }
 683 }
 684
 685 MinimapMarker* Minimap::addMarker(scene::ISceneNode *parent_node)
 686 {
 687         MinimapMarker *m = new MinimapMarker(parent_node);
 688         m_markers.push_back(m);
 689         return m;
 690 }
 691
 692 void Minimap::removeMarker(MinimapMarker **m)
 693 {
 694         m_markers.remove(*m);
 695         delete *m;
 696         *m = nullptr;
 697 }
 698
 699 void Minimap::updateActiveMarkers()
 700 {
 701         video::IImage *minimap_mask = data->minimap_shape_round ?
 702                 data->minimap_mask_round : data->minimap_mask_square;
 703
 704         m_active_markers.clear();
 705         v3f cam_offset = intToFloat(client->getCamera()->getOffset(), BS);
 706         v3s16 pos_offset = data->pos - v3s16(data->mode.map_size / 2,
 707                         data->mode.scan_height / 2,
 708                         data->mode.map_size / 2);
 709
 710         for (MinimapMarker *marker : m_markers) {
 711                 v3s16 pos = floatToInt(marker->parent_node->getAbsolutePosition() +
 712                         cam_offset, BS) - pos_offset;
 713                 if (pos.X < 0 || pos.X > data->mode.map_size ||
 714                                 pos.Y < 0 || pos.Y > data->mode.scan_height ||
 715                                 pos.Z < 0 || pos.Z > data->mode.map_size) {
 716                         continue;
 717                 }
 718                 pos.X = ((float)pos.X / data->mode.map_size) * MINIMAP_MAX_SX;
 719                 pos.Z = ((float)pos.Z / data->mode.map_size) * MINIMAP_MAX_SY;
 720                 const video::SColor &mask_col = minimap_mask->getPixel(pos.X, pos.Z);
 721                 if (!mask_col.getAlpha()) {
 722                         continue;
 723                 }
 724
 725                 m_active_markers.emplace_back(((float)pos.X / (float)MINIMAP_MAX_SX) - 0.5,
 726                         (1.0 - (float)pos.Z / (float)MINIMAP_MAX_SY) - 0.5);
 727         }
 728 }
 729
 730 ////
 731 //// MinimapMapblock
 732 ////
 733
 734 void MinimapMapblock::getMinimapNodes(VoxelManipulator *vmanip, const v3s16 &pos)
 735 {
 736
 737         for (s16 x = 0; x < MAP_BLOCKSIZE; x++)
 738         for (s16 z = 0; z < MAP_BLOCKSIZE; z++) {
 739                 s16 air_count = 0;
 740                 bool surface_found = false;
 741                 MinimapPixel *mmpixel = &data[z * MAP_BLOCKSIZE + x];
 742
 743                 for (s16 y = MAP_BLOCKSIZE -1; y >= 0; y--) {
 744                         v3s16 p(x, y, z);
 745                         MapNode n = vmanip->getNodeNoEx(pos + p);
 746                         if (!surface_found && n.getContent() != CONTENT_AIR) {
 747                                 mmpixel->height = y;
 748                                 mmpixel->n = n;
 749                                 surface_found = true;
 750                         } else if (n.getContent() == CONTENT_AIR) {
 751                                 air_count++;
 752                         }
 753                 }
 754
 755                 if (!surface_found)
 756                         mmpixel->n = MapNode(CONTENT_AIR);
 757
 758                 mmpixel->air_count = air_count;
 759         }
 760 }