src/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 "logoutputbuffer.h"
  22 #include "jthread/jmutexautolock.h"
  23 #include "jthread/jsemaphore.h"
  24 #include "clientmap.h"
  25 #include "settings.h"
  26 #include "nodedef.h"
  27 #include "porting.h"
  28 #include "util/numeric.h"
  29 #include "util/string.h"
  30 #include <math.h>
  31
  32 QueuedMinimapUpdate::QueuedMinimapUpdate():
  33         pos(-1337,-1337,-1337),
  34         data(NULL)
  35 {
  36 }
  37
  38 QueuedMinimapUpdate::~QueuedMinimapUpdate()
  39 {
  40         delete data;
  41 }
  42
  43 MinimapUpdateQueue::MinimapUpdateQueue()
  44 {
  45 }
  46
  47 MinimapUpdateQueue::~MinimapUpdateQueue()
  48 {
  49         JMutexAutoLock lock(m_mutex);
  50
  51         for (std::list<QueuedMinimapUpdate*>::iterator
  52                         i = m_queue.begin();
  53                         i != m_queue.end(); ++i) {
  54                 QueuedMinimapUpdate *q = *i;
  55                 delete q;
  56         }
  57 }
  58
  59 bool MinimapUpdateQueue::addBlock(v3s16 pos, MinimapMapblock *data)
  60 {
  61         DSTACK(__FUNCTION_NAME);
  62
  63         JMutexAutoLock lock(m_mutex);
  64
  65         /*
  66                 Find if block is already in queue.
  67                 If it is, update the data and quit.
  68         */
  69         for (std::list<QueuedMinimapUpdate*>::iterator
  70                         i = m_queue.begin();
  71                         i != m_queue.end(); ++i) {
  72                 QueuedMinimapUpdate *q = *i;
  73                 if (q->pos == pos) {
  74                         delete q->data;
  75                         q->data = data;
  76                         return false;
  77                 }
  78         }
  79
  80         /*
  81                 Add the block
  82         */
  83         QueuedMinimapUpdate *q = new QueuedMinimapUpdate;
  84         q->pos = pos;
  85         q->data = data;
  86         m_queue.push_back(q);
  87         return true;
  88 }
  89
  90 QueuedMinimapUpdate * MinimapUpdateQueue::pop()
  91 {
  92         JMutexAutoLock lock(m_mutex);
  93
  94         for (std::list<QueuedMinimapUpdate*>::iterator
  95                         i = m_queue.begin();
  96                         i != m_queue.end(); i++) {
  97                 QueuedMinimapUpdate *q = *i;
  98                 m_queue.erase(i);
  99                 return q;
 100         }
 101         return NULL;
 102 }
 103
 104 /*
 105         Minimap update thread
 106 */
 107
 108 void MinimapUpdateThread::Stop()
 109 {
 110         JThread::Stop();
 111
 112         // give us a nudge
 113         m_queue_sem.Post();
 114 }
 115
 116 void MinimapUpdateThread::enqueue_Block(v3s16 pos, MinimapMapblock *data)
 117 {
 118         if (m_queue.addBlock(pos, data))
 119                 // we had to allocate a new block
 120                 m_queue_sem.Post();
 121 }
 122
 123
 124 void *MinimapUpdateThread::Thread()
 125 {
 126         ThreadStarted();
 127
 128         log_register_thread("MinimapUpdateThread");
 129
 130         DSTACK(__FUNCTION_NAME);
 131
 132         BEGIN_DEBUG_EXCEPTION_HANDLER
 133
 134         porting::setThreadName("MinimapUpdateThread");
 135
 136         while (!StopRequested()) {
 137
 138                 m_queue_sem.Wait();
 139                 if (StopRequested()) break;
 140
 141                 while (m_queue.size()) {
 142                         QueuedMinimapUpdate *q = m_queue.pop();
 143                         if (!q)
 144                                 break;
 145                         std::map<v3s16, MinimapMapblock *>::iterator it;
 146                         it = m_blocks_cache.find(q->pos);
 147                         if (q->data) {
 148                                 m_blocks_cache[q->pos] = q->data;
 149                         } else if (it != m_blocks_cache.end()) {
 150                                 delete it->second;
 151                                 m_blocks_cache.erase(it);
 152                         }
 153                 }
 154
 155                 if (data->map_invalidated) {
 156                         if (data->mode != MINIMAP_MODE_OFF) {
 157                                 getMap(data->pos, data->map_size, data->scan_height, data->radar);
 158                                 data->map_invalidated = false;
 159                         }
 160                 }
 161         }
 162         END_DEBUG_EXCEPTION_HANDLER(errorstream)
 163
 164         return NULL;
 165 }
 166
 167 MinimapUpdateThread::~MinimapUpdateThread()
 168 {
 169         for (std::map<v3s16, MinimapMapblock *>::iterator
 170                         it = m_blocks_cache.begin();
 171                         it != m_blocks_cache.end(); it++) {
 172                 delete it->second;
 173         }
 174 }
 175
 176 MinimapPixel *MinimapUpdateThread::getMinimapPixel (v3s16 pos, s16 height, s16 &pixel_height)
 177 {
 178         pixel_height = height - MAP_BLOCKSIZE;
 179         v3s16 blockpos_max, blockpos_min, relpos;
 180         getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y - height / 2, pos.Z), blockpos_min, relpos);
 181         getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y + height / 2, pos.Z), blockpos_max, relpos);
 182         std::map<v3s16, MinimapMapblock *>::iterator it;
 183         for (s16 i = blockpos_max.Y; i > blockpos_min.Y - 1; i--) {
 184                 it = m_blocks_cache.find(v3s16(blockpos_max.X, i, blockpos_max.Z));
 185                 if (it != m_blocks_cache.end()) {
 186                         MinimapPixel *pixel = &it->second->data[relpos.X + relpos.Z * MAP_BLOCKSIZE];
 187                         if (pixel->id != CONTENT_AIR) {
 188                                 pixel_height += pixel->height;
 189                                 return pixel;
 190                         }
 191                 }
 192                 pixel_height -= MAP_BLOCKSIZE;
 193         }
 194         return NULL;
 195 }
 196
 197 s16 MinimapUpdateThread::getAirCount (v3s16 pos, s16 height)
 198 {
 199         s16 air_count = 0;
 200         v3s16 blockpos_max, blockpos_min, relpos;
 201         getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y - height / 2, pos.Z), blockpos_min, relpos);
 202         getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y + height / 2, pos.Z), blockpos_max, relpos);
 203         std::map<v3s16, MinimapMapblock *>::iterator it;
 204         for (s16 i = blockpos_max.Y; i > blockpos_min.Y - 1; i--) {
 205                 it = m_blocks_cache.find(v3s16(blockpos_max.X, i, blockpos_max.Z));
 206                 if (it != m_blocks_cache.end()) {
 207                         MinimapPixel *pixel = &it->second->data[relpos.X + relpos.Z * MAP_BLOCKSIZE];
 208                         air_count += pixel->air_count;
 209                 }
 210         }
 211         return air_count;
 212 }
 213
 214 void MinimapUpdateThread::getMap (v3s16 pos, s16 size, s16 height, bool radar)
 215 {
 216         v3s16 p = v3s16 (pos.X - size / 2, pos.Y, pos.Z - size / 2);
 217
 218         for (s16 x = 0; x < size; x++) {
 219                 for (s16 z = 0; z < size; z++){
 220                         u16 id = CONTENT_AIR;
 221                         MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * size];
 222                         if (!radar) {
 223                                 s16 pixel_height = 0;
 224                                 MinimapPixel* cached_pixel =
 225                                         getMinimapPixel(v3s16(p.X + x, p.Y, p.Z + z), height, pixel_height);
 226                                 if (cached_pixel) {
 227                                         id = cached_pixel->id;
 228                                         minimap_pixel->height = pixel_height;
 229                                 }
 230                         } else {
 231                                 minimap_pixel->air_count = getAirCount (v3s16(p.X + x, p.Y, p.Z + z), height);
 232                         }
 233                         minimap_pixel->id = id;
 234                 }
 235         }
 236 }
 237
 238 Mapper::Mapper(IrrlichtDevice *device, Client *client)
 239 {
 240         this->device = device;
 241         this->client = client;
 242         this->driver = device->getVideoDriver();
 243         this->tsrc = client->getTextureSource();
 244         this->player = client->getEnv().getLocalPlayer();
 245         this->shdrsrc = client->getShaderSource();
 246
 247         m_enable_shaders = g_settings->getBool("enable_shaders");
 248         m_enable_shaders = g_settings->getBool("enable_shaders");
 249         if (g_settings->getBool("minimap_double_scan_height")) {
 250                 m_surface_mode_scan_height = 256;
 251         } else {
 252                 m_surface_mode_scan_height = 128;
 253         }
 254         data = new MinimapData;
 255         data->mode = MINIMAP_MODE_OFF;
 256         data->radar = false;
 257         data->map_invalidated = true;
 258         data->heightmap_image = NULL;
 259         data->minimap_image = NULL;
 260         data->texture = NULL;
 261         data->minimap_shape_round = g_settings->getBool("minimap_shape_round");
 262         std::string fname1 = "minimap_mask_round.png";
 263         std::string fname2 = "minimap_overlay_round.png";
 264         data->minimap_mask_round = driver->createImage (tsrc->getTexture(fname1),
 265                         core::position2d<s32>(0,0), core::dimension2d<u32>(512,512));
 266         data->minimap_overlay_round = tsrc->getTexture(fname2);
 267         fname1 = "minimap_mask_square.png";
 268         fname2 = "minimap_overlay_square.png";
 269         data->minimap_mask_square = driver->createImage (tsrc->getTexture(fname1),
 270                         core::position2d<s32>(0,0), core::dimension2d<u32>(512,512));
 271         data->minimap_overlay_square = tsrc->getTexture(fname2);
 272         data->player_marker = tsrc->getTexture("player_marker.png");
 273         m_meshbuffer = getMinimapMeshBuffer();
 274         m_minimap_update_thread = new MinimapUpdateThread(device, client);
 275         m_minimap_update_thread->data = data;
 276         m_minimap_update_thread->Start();
 277 }
 278
 279 Mapper::~Mapper()
 280 {
 281         m_minimap_update_thread->Stop();
 282         m_minimap_update_thread->Wait();
 283         m_meshbuffer->drop();
 284         data->minimap_mask_round->drop();
 285         data->minimap_mask_square->drop();
 286         driver->removeTexture(data->texture);
 287         driver->removeTexture(data->heightmap_texture);
 288         driver->removeTexture(data->minimap_overlay_round);
 289         driver->removeTexture(data->minimap_overlay_square);
 290         delete data;
 291         delete m_minimap_update_thread;
 292 }
 293
 294 void Mapper::addBlock (v3s16 pos, MinimapMapblock *data)
 295 {
 296         m_minimap_update_thread->enqueue_Block(pos, data);
 297 }
 298
 299 MinimapMode Mapper::getMinimapMode()
 300 {
 301         return data->mode;
 302 }
 303
 304 void Mapper::toggleMinimapShape()
 305 {
 306         data->minimap_shape_round = !data->minimap_shape_round;
 307         g_settings->setBool(("minimap_shape_round"), data->minimap_shape_round);
 308 }
 309
 310 void Mapper::setMinimapMode(MinimapMode mode)
 311 {
 312         static const u16 modeDefs[7 * 3] = {
 313                 0, 0, 0,
 314                 0, m_surface_mode_scan_height, 256,
 315                 0, m_surface_mode_scan_height, 128,
 316                 0, m_surface_mode_scan_height, 64,
 317                 1, 32, 128,
 318                 1, 32, 64,
 319                 1, 32, 32};
 320
 321         JMutexAutoLock lock(m_mutex);
 322         data->radar = (bool)modeDefs[(int)mode * 3];
 323         data->scan_height = modeDefs[(int)mode * 3 + 1];
 324         data->map_size = modeDefs[(int)mode * 3 + 2];
 325         data->mode = mode;
 326 }
 327
 328 void Mapper::setPos(v3s16 pos)
 329 {
 330         JMutexAutoLock lock(m_mutex);
 331         data->pos = pos;
 332 }
 333
 334 video::ITexture *Mapper::getMinimapTexture()
 335 {
 336         // update minimap textures when new scan is ready
 337         if (!data->map_invalidated) {
 338                 // create minimap and heightmap image
 339                 core::dimension2d<u32> dim(data->map_size,data->map_size);
 340                 video::IImage *map_image = driver->createImage(video::ECF_A8R8G8B8, dim);
 341                 video::IImage *heightmap_image = driver->createImage(video::ECF_A8R8G8B8, dim);
 342                 video::IImage *minimap_image = driver->createImage(video::ECF_A8R8G8B8,
 343                         core::dimension2d<u32>(512, 512));
 344
 345                 video::SColor c;
 346                 if (!data->radar) {
 347                         // surface mode
 348                         for (s16 x = 0; x < data->map_size; x++) {
 349                                 for (s16 z = 0; z < data->map_size; z++) {
 350                                         MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * data->map_size];
 351                                         const ContentFeatures &f = client->getNodeDefManager()->get(minimap_pixel->id);
 352                                         c = f.minimap_color;
 353                                         c.setAlpha(240);
 354                                         map_image->setPixel(x, data->map_size - z -1, c);
 355                                         u32 h = minimap_pixel->height;
 356                                         heightmap_image->setPixel(x,data->map_size -z -1,
 357                                                 video::SColor(255, h, h, h));
 358                                 }
 359                         }
 360                 } else {
 361                         // radar mode
 362                         c = video::SColor (240, 0 , 0, 0);
 363                         for (s16 x = 0; x < data->map_size; x++) {
 364                                 for (s16 z = 0; z < data->map_size; z++) {
 365                                         MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * data->map_size];
 366                                         if (minimap_pixel->air_count > 0) {
 367                                                 c.setGreen(core::clamp(core::round32(32 + minimap_pixel->air_count * 8), 0, 255));
 368                                         } else {
 369                                                 c.setGreen(0);
 370                                         }
 371                                         map_image->setPixel(x, data->map_size - z -1, c);
 372                                 }
 373                         }
 374                 }
 375
 376                 map_image->copyToScaling(minimap_image);
 377                 map_image->drop();
 378
 379                 video::IImage *minimap_mask;
 380                 if (data->minimap_shape_round) {
 381                         minimap_mask = data->minimap_mask_round;
 382                 } else {
 383                         minimap_mask = data->minimap_mask_square;
 384                 }
 385                 for (s16 x = 0; x < 512; x++) {
 386                         for (s16 y = 0; y < 512; y++) {
 387                                 video::SColor mask_col = minimap_mask->getPixel(x, y);
 388                                 if (!mask_col.getAlpha()) {
 389                                         minimap_image->setPixel(x, y, video::SColor(0,0,0,0));
 390                                 }
 391                         }
 392                 }
 393
 394                 if (data->texture) {
 395                         driver->removeTexture(data->texture);
 396                 }
 397                 if (data->heightmap_texture) {
 398                         driver->removeTexture(data->heightmap_texture);
 399                 }
 400                 data->texture = driver->addTexture("minimap__", minimap_image);
 401                 data->heightmap_texture = driver->addTexture("minimap_heightmap__", heightmap_image);
 402                 minimap_image->drop();
 403                 heightmap_image->drop();
 404
 405                 data->map_invalidated = true;
 406         }
 407         return data->texture;
 408 }
 409
 410 v3f Mapper::getYawVec()
 411 {
 412         if (data->minimap_shape_round) {
 413                 return v3f(cos(player->getYaw()* core::DEGTORAD),
 414                         sin(player->getYaw()* core::DEGTORAD), 1.0);
 415         } else {
 416                 return v3f(1.0, 0.0, 1.0);
 417         }
 418 }
 419
 420 scene::SMeshBuffer *Mapper::getMinimapMeshBuffer()
 421 {
 422         scene::SMeshBuffer *buf = new scene::SMeshBuffer();
 423         buf->Vertices.set_used(4);
 424         buf->Indices .set_used(6);
 425         video::SColor c(255, 255, 255, 255);
 426
 427         buf->Vertices[0] = video::S3DVertex(-1, -1, 0, 0, 0, 1, c, 0, 1);
 428         buf->Vertices[1] = video::S3DVertex(-1,  1, 0, 0, 0, 1, c, 0, 0);
 429         buf->Vertices[2] = video::S3DVertex( 1,  1, 0, 0, 0, 1, c, 1, 0);
 430         buf->Vertices[3] = video::S3DVertex( 1, -1, 0, 0, 0, 1, c, 1, 1);
 431
 432         buf->Indices[0] = 0;
 433         buf->Indices[1] = 1;
 434         buf->Indices[2] = 2;
 435         buf->Indices[3] = 2;
 436         buf->Indices[4] = 3;
 437         buf->Indices[5] = 0;
 438
 439         return buf;
 440 }
 441
 442 void Mapper::drawMinimap()
 443 {
 444         v2u32 screensize = porting::getWindowSize();
 445         u32 size = 0.25 * screensize.Y;
 446         video::ITexture* minimap_texture = getMinimapTexture();
 447         core::matrix4 matrix;
 448
 449         core::rect<s32> oldViewPort = driver->getViewPort();
 450         driver->setViewPort(core::rect<s32>(screensize.X - size - 10, 10,
 451                 screensize.X - 10, size + 10));
 452         core::matrix4 oldProjMat = driver->getTransform(video::ETS_PROJECTION);
 453         driver->setTransform(video::ETS_PROJECTION, core::matrix4());
 454         core::matrix4 oldViewMat = driver->getTransform(video::ETS_VIEW);
 455         driver->setTransform(video::ETS_VIEW, core::matrix4());
 456         matrix.makeIdentity();
 457
 458         if (minimap_texture) {
 459                 video::SMaterial& material = m_meshbuffer->getMaterial();
 460                 material.setFlag(video::EMF_TRILINEAR_FILTER, true);
 461                 material.Lighting = false;
 462                 material.TextureLayer[0].Texture = minimap_texture;
 463                 material.TextureLayer[1].Texture = data->heightmap_texture;
 464                 if (m_enable_shaders && !data->radar) {
 465                         u16 sid = shdrsrc->getShader("minimap_shader", 1, 1);
 466                         material.MaterialType = shdrsrc->getShaderInfo(sid).material;
 467                 } else {
 468                         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 469                 }
 470
 471                 if (data->minimap_shape_round)
 472                         matrix.setRotationDegrees(core::vector3df(0, 0, 360 - player->getYaw()));
 473                 driver->setTransform(video::ETS_WORLD, matrix);
 474                 driver->setMaterial(material);
 475                 driver->drawMeshBuffer(m_meshbuffer);
 476                 video::ITexture *minimap_overlay;
 477                 if (data->minimap_shape_round) {
 478                         minimap_overlay = data->minimap_overlay_round;
 479                 } else {
 480                         minimap_overlay = data->minimap_overlay_square;
 481                 }
 482                 material.TextureLayer[0].Texture = minimap_overlay;
 483                 material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 484                 driver->setMaterial(material);
 485                 driver->drawMeshBuffer(m_meshbuffer);
 486
 487                 if (!data->minimap_shape_round) {
 488                         matrix.setRotationDegrees(core::vector3df(0, 0, player->getYaw()));
 489                         driver->setTransform(video::ETS_WORLD, matrix);
 490                         material.TextureLayer[0].Texture = data->player_marker;
 491                         driver->setMaterial(material);
 492                         driver->drawMeshBuffer(m_meshbuffer);
 493                 }
 494         }
 495
 496         driver->setTransform(video::ETS_VIEW, oldViewMat);
 497         driver->setTransform(video::ETS_PROJECTION, oldProjMat);
 498         driver->setViewPort(oldViewPort);
 499 }